texlive[63949] Master: wrapstuff (20jul22)
commits+karl at tug.org
commits+karl at tug.org
Wed Jul 20 22:26:32 CEST 2022
Revision: 63949
http://tug.org/svn/texlive?view=revision&revision=63949
Author: karl
Date: 2022-07-20 22:26:32 +0200 (Wed, 20 Jul 2022)
Log Message:
-----------
wrapstuff (20jul22)
Modified Paths:
--------------
trunk/Master/tlpkg/bin/tlpkg-ctan-check
trunk/Master/tlpkg/libexec/ctan2tds
trunk/Master/tlpkg/tlpsrc/collection-latexextra.tlpsrc
Added Paths:
-----------
trunk/Master/texmf-dist/doc/latex/wrapstuff/
trunk/Master/texmf-dist/doc/latex/wrapstuff/README.md
trunk/Master/texmf-dist/doc/latex/wrapstuff/wrapstuff.pdf
trunk/Master/texmf-dist/source/latex/wrapstuff/
trunk/Master/texmf-dist/source/latex/wrapstuff/wrapstuff.dtx
trunk/Master/texmf-dist/tex/latex/wrapstuff/
trunk/Master/texmf-dist/tex/latex/wrapstuff/wrapstuff.sty
trunk/Master/tlpkg/tlpsrc/wrapstuff.tlpsrc
Added: trunk/Master/texmf-dist/doc/latex/wrapstuff/README.md
===================================================================
--- trunk/Master/texmf-dist/doc/latex/wrapstuff/README.md (rev 0)
+++ trunk/Master/texmf-dist/doc/latex/wrapstuff/README.md 2022-07-20 20:26:32 UTC (rev 63949)
@@ -0,0 +1,50 @@
+wrapstuff
+=========
+
+The `wrapstuff` package provides another implementation of text wrapping.
+Its implementation benefits from the paragraph hooks available since
+LaTeX 2021-06-01.
+
+Basic Usage
+-----------
+The package only provides a user environment `wrapstuff`.
+
+ \begin{wrapstuff}[<options>]
+ <wrapping stuff>
+ \end{wrapstuff}
+ <main text>
+
+You can read the package manual (in Chinese) for some explanations.
+
+Contributing
+------------
+The package is still highly experimental and not fully tested.
+[Issues](https://github.com/qinglee/wrapstuff/issues) and
+[pull requests](https://github.com/qinglee/wrapstuff/pulls)
+are always welcome.
+
+Copyright and Licence
+---------------------
+
+ Copyright (C) 2022 by Qing Lee <sobenlee at gmail.com>
+ -----------------------------------------------------------------
+
+ This work may be distributed and/or modified under the
+ conditions of the LaTeX Project Public License, either
+ version 1.3c of this license or (at your option) any later
+ version. This version of this license is in
+ http://www.latex-project.org/lppl/lppl-1-3c.txt
+ and the latest version of this license is in
+ http://www.latex-project.org/lppl.txt
+ and version 1.3 or later is part of all distributions of
+ LaTeX version 2005/12/01 or later.
+
+ This work has the LPPL maintenance status "maintained".
+
+ The Current Maintainer of this work is Qing Lee.
+
+ This package consists of the file wrapstuff.dtx,
+ and the derived files wrapstuff.pdf,
+ wrapstuff.sty,
+ wrapstuff.ins and
+ README.md (this file).
Property changes on: trunk/Master/texmf-dist/doc/latex/wrapstuff/README.md
___________________________________________________________________
Added: svn:eol-style
## -0,0 +1 ##
+native
\ No newline at end of property
Added: trunk/Master/texmf-dist/doc/latex/wrapstuff/wrapstuff.pdf
===================================================================
(Binary files differ)
Index: trunk/Master/texmf-dist/doc/latex/wrapstuff/wrapstuff.pdf
===================================================================
--- trunk/Master/texmf-dist/doc/latex/wrapstuff/wrapstuff.pdf 2022-07-20 20:23:38 UTC (rev 63948)
+++ trunk/Master/texmf-dist/doc/latex/wrapstuff/wrapstuff.pdf 2022-07-20 20:26:32 UTC (rev 63949)
Property changes on: trunk/Master/texmf-dist/doc/latex/wrapstuff/wrapstuff.pdf
___________________________________________________________________
Added: svn:mime-type
## -0,0 +1 ##
+application/pdf
\ No newline at end of property
Added: trunk/Master/texmf-dist/source/latex/wrapstuff/wrapstuff.dtx
===================================================================
--- trunk/Master/texmf-dist/source/latex/wrapstuff/wrapstuff.dtx (rev 0)
+++ trunk/Master/texmf-dist/source/latex/wrapstuff/wrapstuff.dtx 2022-07-20 20:26:32 UTC (rev 63949)
@@ -0,0 +1,3011 @@
+% \iffalse meta-comment
+% !TeX program = XeLaTeX
+% !TeX encoding = UTF-8
+%<*internal>
+\iffalse
+%</internal>
+%<*readme>
+wrapstuff
+=========
+
+The `wrapstuff` package provides another implementation of text wrapping.
+Its implementation benefits from the paragraph hooks available since
+LaTeX 2021-06-01.
+
+Basic Usage
+-----------
+The package only provides a user environment `wrapstuff`.
+
+ \begin{wrapstuff}[<options>]
+ <wrapping stuff>
+ \end{wrapstuff}
+ <main text>
+
+You can read the package manual (in Chinese) for some explanations.
+
+Contributing
+------------
+The package is still highly experimental and not fully tested.
+[Issues](https://github.com/qinglee/wrapstuff/issues) and
+[pull requests](https://github.com/qinglee/wrapstuff/pulls)
+are always welcome.
+
+Copyright and Licence
+---------------------
+
+ Copyright (C) 2022 by Qing Lee <sobenlee at gmail.com>
+ -----------------------------------------------------------------
+
+ This work may be distributed and/or modified under the
+ conditions of the LaTeX Project Public License, either
+ version 1.3c of this license or (at your option) any later
+ version. This version of this license is in
+ http://www.latex-project.org/lppl/lppl-1-3c.txt
+ and the latest version of this license is in
+ http://www.latex-project.org/lppl.txt
+ and version 1.3 or later is part of all distributions of
+ LaTeX version 2005/12/01 or later.
+
+ This work has the LPPL maintenance status "maintained".
+
+ The Current Maintainer of this work is Qing Lee.
+
+ This package consists of the file wrapstuff.dtx,
+ and the derived files wrapstuff.pdf,
+ wrapstuff.sty,
+ wrapstuff.ins and
+ README.md (this file).
+%</readme>
+%<*internal>
+\fi
+\begingroup
+ \def\temp{LaTeX2e}
+\expandafter\endgroup\ifx\temp\fmtname\else
+\csname fi\endcsname
+%</internal>
+%<*install>
+
+\input ctxdocstrip %
+
+\preamble
+
+ Copyright (C) 2022 by Qing Lee <sobenlee at gmail.com>
+-----------------------------------------------------------------
+
+ This work may be distributed and/or modified under the
+ conditions of the LaTeX Project Public License, either
+ version 1.3c of this license or (at your option) any later
+ version. This version of this license is in
+ http://www.latex-project.org/lppl/lppl-1-3c.txt
+ and the latest version of this license is in
+ http://www.latex-project.org/lppl.txt
+ and version 1.3 or later is part of all distributions of
+ LaTeX version 2005/12/01 or later.
+
+ This work has the LPPL maintenance status "maintained".
+
+ The Current Maintainer of this work is Qing Lee.
+
+-----------------------------------------------------------------
+
+\endpreamble
+
+\postamble
+
+ This work consists of the file wrapstuff.dtx,
+ and the derived files wrapstuff.pdf,
+ wrapstuff.sty,
+ wrapstuff.ins and
+ README.md.
+\endpostamble
+
+\generate
+ {
+%</install>
+%<*internal>
+ \usedir{source/latex/wrapstuff}
+ \file{wrapstuff.ins} {\from{\jobname.dtx}{install}}
+%</internal>
+%<*install>
+ \usedir{tex/latex/wrapstuff}
+ \file{wrapstuff.sty} {\from{\jobname.dtx}{package}}
+ \nopreamble\nopostamble
+ \usedir{doc/latex/wrapstuff}
+ \file{README.md} {\from{\jobname.dtx}{readme}}
+ }
+
+\endbatchfile
+%</install>
+%<*internal>
+\fi
+%</internal>
+%<package>\NeedsTeXFormat{LaTeX2e}
+%<package>\@ifundefined{ExplLoaderFileDate}{\RequirePackage{expl3}}{}
+%<+package>\GetIdInfo$Id: wrapstuff.dtx 564fe9d 2022-07-20 19:55:58 +0800 Qing Lee <sobenlee at gmail.com> $
+%<package> {Wrapping text around stuff}
+%<package>\ProvidesExplPackage{\ExplFileName}
+%<package> {\ExplFileDate}{0.1}{\ExplFileDescription}
+%<*driver>
+\documentclass{ctxdoc}
+\usepackage{wrapstuff}
+\usepackage{graphicx}
+\usepackage{zhlipsum}
+\ExplSyntaxOn
+\makeatletter
+\DeclareDocumentCommand \gitsha { m }
+ {
+ \href { https \c_colon_str //github.com/qinglee/wrapstuff/commit/#1 }
+ { rev. ~ \texttt{#1} }
+ }
+\DeclareDocumentCommand \QIANZIWEN { }
+ {
+ 天地玄黄宇宙洪荒日月盈昃辰宿列张
+ 寒来暑往秋收冬藏闰馀成岁律召调阳 \par
+ 云腾致雨露结为霜金生丽水玉出昆冈 \par
+ }
+\DeclareDocumentCommand \ADDSPECEIALKEY { m }
+ {
+ \cs_gset_eq:NN \@@_codedoc_names_typeset_save:
+ \__codedoc_names_typeset:
+ \cs_gset_protected:Npn \__codedoc_names_typeset:
+ {
+ \cs_gset_eq:NN \__codedoc_names_typeset:
+ \@@_codedoc_names_typeset_save:
+ \__codedoc_names_typeset:
+ #1 \\
+ }
+ }
+\DeclareDocumentCommand \IMAGE { m m }
+ { \includegraphics [ width = \dim_eval:n {#1} ] { example-image-#2.pdf } }
+\tl_put_left:Nn \Example
+ { \trivlist \item \relax }
+\tl_put_right:Nn \endExample
+ { \endtrivlist }
+\SideBySideExampleSet { numbers = none }
+\makeatother
+\ExplSyntaxOff
+\begin{document}
+ \DocInput{\jobname.dtx}
+ \IndexLayout
+ \PrintChanges
+ \PrintIndex
+\end{document}
+%</driver>
+% \fi
+%
+% \CheckSum{2923}
+%
+% \changes{v0.1}{2022/07/05}{初始版本。}
+% \changes{v0.1}{2022/07/20}{首次提交到 CTAN 发布。}
+%
+% \GetFileId{wrapstuff.sty}
+%
+% \title{\bfseries\pkg{wrapstuff} 宏包}
+% \author{李清}
+% \date{\filedate\qquad\fileversion\thanks{\gitsha{\ExplFileVersion}.}}
+% \maketitle
+%
+% \begin{documentation}
+%
+% \section{基本用法}
+%
+% \pkg{wrapstuff} 宏包提供了图文绕排的另一种实现。
+% \pkg{wrapstuff} 的实现依赖 \LaTeX\ 2021-06-01 开始提供的段落钩子，
+% 并依赖 \LaTeXiii\ 2022-04-10 之后的版本。
+%
+% \begin{function}{wrapstuff}
+% \begin{syntax}
+% \tn{begin}\{wrapstuff\}\oarg{选项}
+% <绕排内容>
+% \tn{end}\{wrapstuff\}
+% <正文>
+% \end{syntax}
+% \pkg{wrapstuff} 只提供了一个用户环境 \env{wrapstuff}，
+% 会在环境之后的段落开始绕排。例如
+% \begin{Example}[frame=single,numbers=none,gobble=5]
+% \begin{wrapstuff}[c,top=1]
+% \includegraphics[width=\dimeval{\linewidth/3}]{example-image.pdf}
+% \end{wrapstuff}
+% \zhlipsum[1][name=zhufu]
+% \end{Example}
+% \end{function}
+%
+% \begin{function}{\wrapstuffset}
+% \begin{syntax}
+% \tn{wrapstuffset} \Arg{选项列表}
+% \end{syntax}
+% \pkg{wrapstuff} 的选项可以在调用宏包时设置，也可以通过 \tn{wrapstuffset} 设置。
+% 选项将在下面描述。
+% \end{function}
+%
+% \ADDSPECEIALKEY{\textrm{\meta{n}}}
+% \begin{function}{top}
+% \begin{syntax}
+% top = <非负整数>
+% \end{syntax}
+% 设置在正文段落的第几行之后开始绕排，可以设置为非负整数。
+% 非负整数选项 \meta{n} 是设置选项 \opt{top} 为 \meta{n} 的缩写形式。
+% 初始值是 \num{0}。
+% \end{function}
+%
+% \begin{function}{width}
+% \begin{syntax}
+% width = <宽度>
+% \end{syntax}
+% 设置绕排内容的宽度，初始值为 \qty{0}{pt}，代表自然宽度。
+% \end{function}
+%
+% \begin{function}{height}
+% \begin{syntax}
+% height = <高度>
+% \end{syntax}
+% 设置绕排内容的高度，初始值为 \qty{0}{pt}，代表自然高度。
+% \end{function}
+%
+% \begin{function}{leftsep,rightsep,hsep}
+% \begin{syntax}
+% leftsep = <长度>
+% rightsep = <长度>
+% hsep = <长度>
+% \end{syntax}
+% 设置绕排内容与正文的左/右间距，选项 \opt{hsep} 同时设置 \opt{leftsep} 和 \opt{rightsep}。
+% 初始值是 \qty{1}{em}。
+% \end{function}
+%
+% \begin{function}{abovesep,belowsep,vsep}
+% \begin{syntax}
+% abovesep = <长度>
+% belowsep = <长度>
+% vsep = <长度>
+% \end{syntax}
+% 设置绕排内容与正文的上/下间距，选项 \opt{vsep} 同时设置 \opt{abovesep} 和 \opt{belowsep}。
+% 初始值是 \qty{0}{pt}。
+% \end{function}
+%
+% \begin{function}{l,r,c,i,o,ratio}
+% \begin{syntax}
+% l/r/c/i/o
+% ratio = <实数>
+% \end{syntax}
+% 这些选项用于设置绕排内容位于正文中的位置。
+% 选项 \opt{l/r/c/i/o} 分别设置绕排内容位于正文的左侧、右侧、中间、内侧、外侧。
+% 选项 \opt{ratio} 设置绕排内容左侧的正文占据行宽的比例，可以设置为 $[0,1]$ 区间中的合理实数。
+% 选项 \opt{i/o} 可以与 \opt{ratio} 一起使用，这时设置的是内/外侧正文的行宽比例。
+% 初始设置为 |r|，即位于正文的右侧。
+% \end{function}
+%
+% \begin{function}{column}
+% \begin{syntax}
+% column = <(true)|false|par>
+% \end{syntax}
+% 控制是否将绕排内容两侧的正文分栏显示，只有设置 |c| 选项或者
+% 设置 \opt{ratio} 不等于 $0$ 或者 $1$ 时才有效。
+% \opt{false} 表示不分栏，正文文字方向始终保持从左到右的顺序；
+% \opt{par} 表示以段落为单位进行分栏，如下示例。
+% \begin{SideBySideExample}[xrightmargin=\dimeval{20em+5mm}]
+% \begin{wrapstuff}[c,1]
+% \IMAGE{2em}{a}
+% \end{wrapstuff}
+% \QIANZIWEN
+% \begin{wrapstuff}[c,1,column=par]
+% \IMAGE{2em}{b}
+% \end{wrapstuff}
+% \QIANZIWEN
+% \begin{wrapstuff}[c,0,column=false]
+% \IMAGE{2em}{c}
+% \end{wrapstuff}
+% \QIANZIWEN
+% \end{SideBySideExample}
+% \end{function}
+%
+% \begin{function}{hoffset}
+% \begin{syntax}
+% hoffset = <长度>
+% \end{syntax}
+% 设置绕排内容伸出正文版心的长度。
+% 当设置了选项 \opt{c} 或者选项 \opt{ratio} 的值位于 $(0,1)$ 时，本选项无效。
+% 一个特殊值 \tn{width} 用于表示绕排内容和相应间距的总宽度，
+% 可以将 \opt{hoffset} 设置为 \tn{width}，完全伸出版心。
+% 初始值为 \qty{0}{pt}。
+% \end{function}
+%
+% \begin{function}{voffset}
+% \begin{syntax}
+% voffset = <长度>
+% \end{syntax}
+% 用于调整绕排内容的竖直位置，初始值为 \qty{0}{pt}。
+% \end{function}
+%
+% \begin{function}{type}
+% \begin{syntax}
+% type = <浮动体类型>
+% \end{syntax}
+% 设置绕排内容的浮动体类型，初始值为空。
+% 如果需要在 \env{wrapstuff} 环境中使用 \tn{caption} 命令，
+% 则需要设置 \opt{type} 为 \opt{figure} 或 \opt{table} 等类型，
+% 并需要同时设置 \opt{width} 指定宽度。
+% \begin{SideBySideExample}[xrightmargin=\dimeval{18em+5mm}]
+% \begin{wrapstuff}[type=figure,width=5em]
+% \centering
+% \IMAGE{4em}{plain}
+% \caption{示例}
+% \end{wrapstuff}
+% \QIANZIWEN
+% \end{SideBySideExample}
+% \end{function}
+%
+% \begin{function}{lines}
+% \begin{syntax}
+% lines = <正整数>
+% \end{syntax}
+% 设置绕排内容占据正文的行数，可以设置正整数。
+% 初始值为空，根据绕排内容的高度自动计算行数。
+% \end{function}
+%
+% \begin{function}{linewidth}
+% \begin{syntax}
+% linewidth = <宽度>
+% \end{syntax}
+% 设置正文段落的行宽，初始设置为 |\linewidth|，一般不需要调整。
+% \end{function}
+%
+% \begin{function}{\wrapstuffclear}
+% 如果当前正文段落的行数不够，\pkg{wrapstuff} 的作用会延续到下一段。
+% 这可能会导致某些意外结果，可以在下一段之前启用命令 \tn{wrapstuffclear} 消除影响。
+% \end{function}
+%
+% \end{documentation}
+%
+%
+% \StopEventually{}
+%
+%
+%\begin{implementation}
+%
+% \section{代码实现}
+%
+% \begin{macrocode}
+%<*package>
+% \end{macrocode}
+%
+% \begin{macrocode}
+%<@@=wstf>
+% \end{macrocode}
+%
+% \pkg{wrapstuff} 的实现依赖 \LaTeX\ 2021-06-01 开始提供的段落钩子。
+% \begin{macrocode}
+\@ifl at t@r \fmtversion { 2021-06-01 }
+ { }
+ {
+ \msg_new:nnn { wrapstuff } { latex-too-old }
+ {
+ You~need~to~update~your~LaTeX~to~the~latest~release. \\
+ Loading~wrapstuff~will~abort!
+ }
+ \msg_critical:nn { wrapstuff } { latex-too-old }
+ }
+% \end{macrocode}
+%
+% 由于使用了 \cs{keys_precompile:nnN}，需要比较新的 \LaTeXiii。
+% \begin{macrocode}
+\@ifl at t@r \ExplLoaderFileDate { 2022-04-10 }
+ { }
+ {
+ \msg_new:nnn { wrapstuff } { latex3-too-old }
+ {
+ You~need~to~update~your~installation~of~the~bundles~
+ "l3kernel"~and~"l3packages". \\
+ Loading~wrapstuff~will~abort!
+ }
+ \msg_critical:nn { wrapstuff } { latex3-too-old }
+ }
+% \end{macrocode}
+%
+% \begin{macrocode}
+\prop_gput:Nnn \g_msg_module_name_prop { wstf } { wrapstuff }
+% \end{macrocode}
+%
+% \begin{macro}[TF]{
+% \@@_if_last_none:,
+% \@@_if_last_hlist:,
+% \@@_if_last_whatsit:,
+% \@@_if_last_glue:,
+% \@@_if_last_kern:,
+% \@@_if_last_penalty:}
+% 一些 \hologo{eTeX} 结点判定函数。
+% \begin{macrocode}
+\group_begin:
+\cs_set:Npn \@@_tmp:nn #1
+ {
+ \group_begin:
+ \exp_args:Ncc \@@_tmp_aux:NNn
+ { @@_if_last_ #1 : }
+ { c_@@_ #1 _node }
+ }
+\cs_set:Npn \@@_tmp_aux:NNn #1#2#3
+ {
+ \group_end:
+ \int_const:Nn #2 {#3}
+ \prg_new_conditional:Npnn #1 { T , F , TF }
+ {
+ \if_int_compare:w \tex_lastnodetype:D = #2
+ \prg_return_true: \else: \prg_return_false: \fi:
+ }
+ }
+\@@_tmp:nn { none } { -1 }
+\@@_tmp:nn { hlist } { 1 }
+\@@_tmp:nn { whatsit } { 9 }
+\@@_tmp:nn { glue } { 11 }
+\@@_tmp:nn { kern } { 12 }
+\@@_tmp:nn { penalty } { 13 }
+\group_end:
+% \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@@_gadd_hook:nn, \@@_package_hook:nn}
+% \begin{macrocode}
+\cs_new_protected:Npn \@@_gadd_hook:nn #1
+ { \hook_gput_code:nnn {#1} { wrapstuff } }
+\cs_new_protected:Npn \@@_package_hook:nn #1
+ { \hook_gput_code:nnn { package/#1/after } { wrapstuff } }
+% \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{wrapstuff}
+% 主要功能环境接口。
+% \begin{macrocode}
+\NewDocumentEnvironment { wrapstuff } { O { } }
+ {
+ \@@_clear:
+ \int_set:Nn \l_@@_top_int { -1 }
+ \tl_if_blank:nTF {#1}
+ { \tl_clear:N \l_@@_main_kv_tl }
+ {
+ \keys_set_filter:nnnN { wrapstuff }
+ { main , ratio }
+ {#1} \l_@@_main_kv_tl
+ }
+ \tl_set:Nx \l_@@_type_tl { \l_@@_type_tl }
+ \dim_set:Nn \l_@@_width_dim { \l_@@_width_tl }
+ \dim_set:Nn \l_@@_height_dim { \l_@@_height_tl }
+ \hbox_gset:Nw \g_@@_stuff_box
+ \dim_compare:nNnTF \l_@@_width_dim > \c_zero_dim
+ { \@@_minipage_begin: }
+ { \@@_hbox_begin: }
+ }
+ {
+ \dim_compare:nNnTF \l_@@_width_dim > \c_zero_dim
+ { \@@_minipage_end: }
+ { \@@_hbox_end: }
+ \@@_set_vsep:
+ \@@_attach_label:
+ \tl_if_empty:NTF \l_@@_main_kv_tl
+ { \tl_gclear:N \g_@@_main_setting_tl }
+ { \@@_save_main_setting: }
+ \@@_set_top_line:
+ \dim_gset:Nn \g_@@_stuff_wd_dim
+ { \box_wd:N \g_@@_stuff_box }
+ \dim_gset:Nn \g_@@_stuff_ht_dim
+ { \box_ht_plus_dp:N \g_@@_stuff_box }
+ \dim_gset_eq:NN
+ \g_@@_remaining_dim
+ \g_@@_stuff_ht_dim
+ \@@_next_para:
+ }
+\@@_gadd_hook:nn { env/wrapstuff/before } { \par }
+\cs_new_protected_nopar:Npn \@@_minipage_begin:
+ {
+ \@@_floatrow_hook:
+ \dim_compare:nNnTF \l_@@_height_dim > \c_zero_dim
+ { \begin { minipage } [b] [ \l_@@_height_dim ] [c] { \l_@@_width_dim } }
+ { \begin { minipage } [b] { \l_@@_width_dim } }
+ \tl_if_empty:NF \l_@@_type_tl
+ { \@@_set_float: }
+ }
+\cs_new_protected_nopar:Npn \@@_minipage_end:
+ {
+ \end { minipage }
+ \hbox_gset_end:
+ \@@_float_pos_hook:
+ }
+\cs_new_protected_nopar:Npn \@@_hbox_begin:
+ { \tex_ignorespaces:D }
+\cs_new_protected_nopar:Npn \@@_hbox_end:
+ {
+ \tex_unskip:D
+ \hbox_gset_end:
+ \dim_compare:nNnT \l_@@_height_dim > \c_zero_dim
+ { \@@_gset_height: }
+ }
+\cs_new_protected_nopar:Npn \@@_gset_height:
+ {
+ \hbox_gset:Nn \g_@@_stuff_box
+ {
+ \box_move_up:nn
+ {
+ ( \l_@@_height_dim
+ - \box_ht:N \g_@@_stuff_box
+ + \box_dp:N \g_@@_stuff_box
+ ) / 2
+ }
+ { \box_use_drop:N \g_@@_stuff_box }
+ }
+ \box_gset_ht:Nn \g_@@_stuff_box { \l_@@_height_dim }
+ \box_gset_dp:Nn \g_@@_stuff_box { \c_zero_dim }
+ }
+\cs_new_protected_nopar:Npn \@@_set_vsep:
+ {
+ \@@_gadd_ht:Nn \g_@@_stuff_box { \l_@@_abovesep_tl }
+ \dim_set:Nn \l_@@_shift_dim { \l_@@_belowsep_tl }
+ \dim_compare:nNnF \l_@@_shift_dim = \c_zero_dim
+ { \@@_set_belowsep: }
+ }
+\cs_new_protected_nopar:Npn \@@_set_belowsep:
+ {
+ \hbox_gset:Nn \g_@@_stuff_box
+ {
+ \box_move_up:nn
+ { \l_@@_shift_dim + \box_dp:N \g_@@_stuff_box }
+ { \box_use_drop:N \g_@@_stuff_box }
+ }
+ \box_gset_dp:Nn \g_@@_stuff_box { \c_zero_dim }
+ }
+\tl_new:N \l_@@_main_kv_tl
+\tl_new:N \g_@@_main_setting_tl
+\box_new:N \g_@@_stuff_box
+\dim_new:N \g_@@_stuff_ht_dim
+\dim_new:N \g_@@_stuff_wd_dim
+\dim_new:N \l_@@_shift_dim
+\dim_new:N \l_@@_width_dim
+\dim_new:N \l_@@_height_dim
+\dim_new:N \g_@@_prevdepth_dim
+\dim_new:N \g_@@_remaining_dim
+% \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@@_attach_label:, \@@_write_label:}
+% \begin{macrocode}
+\cs_new_protected_nopar:Npn \@@_attach_label:
+ {
+ \stepcounter { wrapstuff }
+ \hbox_gset:Nn \g_@@_stuff_box
+ {
+ \@@_write_label:
+ \box_use_drop:N \g_@@_stuff_box
+ }
+ }
+\cs_new_protected_nopar:Npn \@@_write_label:
+ {
+ \iow_shipout_x:Nx \@auxout
+ {
+ \c_backslash_str wrapstuff at label
+ { \@@_counter:n { wrapstuff } }
+ { \exp_not:N \wrapstuff at counter { page } }
+ }
+ }
+\cs_new:Npn \@@_counter:n #1
+ { \int_value:w \value {#1} }
+\cs_new_eq:NN \wrapstuff at counter \@@_counter:n
+\cs_new_protected_nopar:Npn \wrapstuff at label
+ { \@newl at bel { wrapstuff at label } }
+\tl_const:Nn \c_@@_label_tl
+ { wrapstuff at label@ \int_value:w \value { wrapstuff } }
+\@@_gadd_hook:nn { begindocument }
+ {
+ \legacy_if:nTF { @filesw }
+ {
+ \iow_now:Nx \@mainaux
+ {
+ \c_backslash_str providecommand
+ \c_backslash_str wrapstuff at label [2] { }
+ }
+ }
+ { \cs_gset_eq:NN \@@_write_label: \@@_empty: }
+ }
+\newcounter { wrapstuff }
+% \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@@_save_main_setting:}
+% \begin{macrocode}
+\cs_new_protected_nopar:Npn \@@_save_main_setting:
+ {
+ \exp_args:Nnno
+ \keys_set_filter:nnnN { wrapstuff }
+ { main }
+ { \l_@@_main_kv_tl } \l_@@_main_kv_tl
+ \bool_if:NTF \l_@@_swap_bool
+ { \@@_swap_ratio: }
+ { \@@_set_ratio:N \l_@@_ratio_fp }
+ \tl_if_empty:NF \l_@@_main_kv_tl
+ { \@@_save_main_setting_aux: }
+ }
+\cs_new_protected:Npn \@@_set_ratio:N #1
+ {
+ \tl_gset:Nx \g_@@_main_setting_tl
+ { \fp_set:Nn \exp_not:N \l_@@_ratio_fp { \fp_use:N #1 } }
+ }
+\cs_new_protected:Npn \@@_set_ratio:n #1
+ {
+ \tl_gset:Nx \g_@@_main_setting_tl
+ { \fp_set:Nn \exp_not:N \l_@@_ratio_fp { \fp_eval:n {#1} } }
+ }
+\cs_new_protected_nopar:Npn \@@_save_main_setting_aux:
+ {
+ \exp_args:Nno
+ \keys_precompile:nnN
+ { wrapstuff }
+ { \l_@@_main_kv_tl } \l_@@_main_kv_tl
+ \tl_gconcat:NNN \g_@@_main_setting_tl
+ \g_@@_main_setting_tl \l_@@_main_kv_tl
+ }
+% \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@@_set_top_line:}
+% \begin{macrocode}
+\cs_new_protected_nopar:Npn \@@_set_top_line:
+ {
+ \int_compare:nNnF \l_@@_top_int < \c_zero_int
+ {
+ \tl_gput_right:Nx \g_@@_main_setting_tl
+ {
+ \int_set:Nn \l_@@_top_int
+ { \int_use:N \l_@@_top_int }
+ }
+ }
+ }
+% \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@@_swap_ratio:}
+% \begin{macrocode}
+\cs_new_protected_nopar:Npn \@@_swap_ratio:
+ {
+ \fp_compare:nF
+ { \c_zero_fp < \l_@@_ratio_fp < \c_one_fp }
+ { \fp_zero:N \l_@@_ratio_fp }
+ \int_if_odd:nTF
+ {
+ \exp_args:Ne \cs_if_exist_use:cF
+ { \c_@@_label_tl }
+ { \@@_counter:n { page } }
+ }
+ { \bool_if:NTF \l_@@_inner_bool }
+ { \bool_if:NTF \l_@@_outer_bool }
+ { \@@_set_ratio:N \l_@@_ratio_fp }
+ { \@@_set_ratio:n { \c_one_fp - \l_@@_ratio_fp } }
+ }
+\bool_new:N \l_@@_swap_bool
+\bool_new:N \l_@@_inner_bool
+\bool_new:N \l_@@_outer_bool
+% \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@@_gadd_ht:Nn,\@@_gsub_ht:Nn}
+% \begin{macrocode}
+\cs_new_protected:Npn \@@_gadd_ht:Nn #1#2
+ { \box_gset_ht:Nn #1 { \box_ht:N #1 + \dim_eval:n {#2} } }
+\cs_new_protected:Npn \@@_gsub_ht:Nn #1#2
+ { \box_gset_ht:Nn #1 { \box_ht:N #1 - \dim_eval:n {#2} } }
+% \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@@_clear:}
+% \begin{macrocode}
+\cs_new_protected_nopar:Npn \@@_clear:
+ {
+ \@@_clear_para_hook:
+ \@@_clear_kludge:
+ \@@_clear_variable:
+ }
+\cs_new_protected_nopar:Npn \@@_clear_variable:
+ {
+ \int_gset:Nn \g_@@_top_int { -1 }
+ \int_gzero:N \g_@@_window_int
+ \dim_gzero:N \g_@@_total_ht_dim
+ \dim_gzero:N \g_@@_column_left_dim
+ \tl_gclear:N \g_@@_main_setting_tl
+ \bool_gset_false:N \g_@@_next_bool
+ \bool_gset_false:N \g_@@_hoffset_bool
+ \bool_gset_false:N \g_@@_next_hang_bool
+ \bool_gset_false:N \g_@@_first_save_bool
+ \bool_gset_false:N \g_@@_right_move_bool
+ \bool_gset_false:N \g_@@_column_right_bool
+ }
+\cs_new_protected_nopar:Npn \@@_clear_kludge:
+ {
+ \bool_if:NTF \g_@@_next_bool
+ {
+ \box_gclear:N \g_@@_stuff_box
+ \skip_vertical:n
+ { \tex_baselineskip:D * \g_@@_window_int }
+ }
+ {
+ \box_if_empty:NF \g_@@_stuff_box
+ { \@@_clear_stuff_box: }
+ }
+ }
+\cs_new_protected_nopar:Npn \@@_clear_stuff_box:
+ {
+ \@@_ignore_depth:
+ \skip_set:Nn \l_@@_last_skip
+ { \box_dp:N \strutbox }
+ \skip_vertical:N \l_@@_last_skip
+ \box_use_drop:N \g_@@_stuff_box
+ \skip_vertical:N \l_@@_last_skip
+ \@@_ignore_depth:
+ }
+% \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@@_next_para:}
+% 将 \env{wrapstuff} 环境之后的段落放入内部环境 \env{wrapstuff at par} 中。
+% 为了控制钩子执行顺序，需要使用 |wrapstuff| 标签，
+% 而不用更为方便的 \cs{hook_gput_next_code:nn} 实现。
+% \begin{macrocode}
+\@@_gadd_hook:nn { para/before } { \@@_para_before: }
+\@@_gadd_hook:nn { para/begin } { \@@_para_begin: }
+\@@_gadd_hook:nn { para/end } { \@@_para_end: }
+\cs_new_protected_nopar:Npn \@@_next_para:
+ {
+ \cs_gset_eq:NN \@@_para_before: \@@_env_before:
+ \cs_gset_eq:NN \@@_para_begin: \@@_env_begin:
+ \cs_gset_eq:NN \@@_para_end: \@@_env_end:
+ }
+\cs_new_protected_nopar:Npn \@@_env_before:
+ { \dim_gset_eq:NN \g_@@_prevdepth_dim \tex_prevdepth:D }
+\cs_new_protected_nopar:Npn \@@_env_begin:
+ { \begin { wrapstuff at par } }
+\cs_new_protected_nopar:Npn \@@_env_end:
+ { \end { wrapstuff at par } }
+\cs_new_protected_nopar:Npn \@@_clear_para_hook:
+ {
+ \cs_gset_eq:NN \@@_para_before: \@@_empty:
+ \cs_gset_eq:NN \@@_para_begin: \@@_empty:
+ \cs_gset_eq:NN \@@_para_end: \@@_empty:
+ }
+\cs_new_protected_nopar:Npn \@@_empty:
+ { }
+\cs_new_eq:NN \@@_para_before: \@@_empty:
+\cs_new_eq:NN \@@_para_begin: \@@_empty:
+\cs_new_eq:NN \@@_para_end: \@@_empty:
+% \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}[int]{wrapstuff at par}
+% 内部环境，实现主要功能。
+% \begin{macrocode}
+\NewDocumentEnvironment { wrapstuff at par } { }
+ {
+ \tl_use:N \g_@@_main_setting_tl
+ \dim_set:Nn \l_@@_leftsep_dim { \l_@@_leftsep_tl }
+ \dim_set:Nn \l_@@_rightsep_dim { \l_@@_rightsep_tl }
+ \dim_set:Nn \l_@@_voffset_dim { \l_@@_voffset_tl }
+ \dim_set:Nn \l_@@_line_dim { \l_@@_linewidth_tl }
+ \dim_set:Nn \l_@@_min_dim { \box_dp:N \strutbox }
+ \dim_set_eq:NN \l_@@_main_width_dim \l_@@_line_dim
+ \dim_sub:Nn \l_@@_line_dim
+ { \tex_leftskip:D + \tex_rightskip:D }
+ \dim_set:Nn \l_@@_window_dim
+ { \l_@@_line_dim - \g_@@_stuff_wd_dim }
+ \fp_compare:nNnTF \l_@@_ratio_fp > \c_zero_fp
+ {
+ \fp_compare:nNnTF \l_@@_ratio_fp < \c_one_fp
+ { \@@_set_window: }
+ { \@@_set_hang_right: }
+ }
+ { \@@_set_hang_left: }
+ \int_compare:nNnTF \g_@@_window_int > \c_zero_int
+ {
+ \int_set_eq:NN \l_@@_window_int \g_@@_window_int
+ \int_zero:N \l_@@_top_int
+ }
+ { \@@_set_lines: }
+ \bool_if:NTF \l_@@_hang_bool
+ {
+ \dim_set_eq:NN \l_@@_display_dim \l_@@_window_dim
+ \int_set_eq:NN \l_@@_window_line_int \l_@@_window_int
+ }
+ {
+ \dim_set_eq:NN \l_@@_display_dim \l_@@_l_dim
+ \int_set:Nn \l_@@_window_int { \l_@@_window_int * 2 }
+ \int_set:Nn \l_@@_window_line_int
+ {
+ \bool_if:NTF \g_@@_column_right_bool
+ { \l_@@_window_int / 2 + \g_@@_column_window_int }
+ { \l_@@_window_int }
+ }
+ }
+ \cs_gset_eq:NN \@@_para_before: \@@_empty:
+ \cs_gset_eq:NN \@@_para_begin: \@@_empty:
+ \@@_save_parshape:
+ \vbox_set:Nw \l_@@_body_box
+ \@@_set_prevdepth:N \g_@@_prevdepth_dim
+ \@@_save_tex_skip:
+ \@@_tex_parameter:
+ \@@_restore_parshape:
+ \@@_display_parameter:
+ \@@_make_main_parshape:
+ \para_raw_noindent:
+ }
+ {
+ \@@_save_hangfrom:
+ \@@_save_tex_skip:
+ \@@_group_kludge:
+ \@@_tex_parameter:
+ \@@_make_main_parshape:
+ \para_raw_end:
+ \int_gset_eq:NN \g_@@_line_int \tex_prevgraf:D
+ \vbox_set_end:
+ \@@_adjust_tex_skip:
+ \cs_gset_eq:NN \@@_para_end: \@@_empty:
+ \int_compare:nNnTF \g_@@_line_int > \l_@@_top_int
+ { \@@_build_par: }
+ { \@@_put_par: }
+ }
+\box_new:N \l_@@_body_box
+\box_new:N \l_@@_window_box
+\int_new:N \l_@@_window_int
+\int_new:N \g_@@_window_int
+\int_new:N \g_@@_line_int
+\int_new:N \l_@@_window_line_int
+\int_new:N \g_@@_column_window_int
+\dim_new:N \l_@@_l_dim
+\dim_new:N \l_@@_r_dim
+\dim_new:N \l_@@_min_dim
+\dim_new:N \l_@@_line_dim
+\dim_new:N \l_@@_window_dim
+\dim_new:N \l_@@_display_dim
+\dim_new:N \l_@@_voffset_dim
+\dim_new:N \l_@@_leftsep_dim
+\dim_new:N \l_@@_rightsep_dim
+\dim_new:N \g_@@_window_ht_dim
+\dim_new:N \l_@@_main_width_dim
+\int_new:N \g_@@_top_int
+\int_gdecr:N \g_@@_top_int
+\bool_new:N \l_@@_hang_bool
+% \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@@_set_hang_left:, \@@_set_hang_right:, \@@_set_window:,}
+% \begin{macrocode}
+\cs_new_protected_nopar:Npn \@@_set_hang_left:
+ {
+ \bool_set_true:N \l_@@_hang_bool
+ \bool_if:NF \g_@@_hoffset_bool
+ { \@@_set_hoffset:NN \l_@@_rightsep_dim \use:nn }
+ \dim_sub:Nn \l_@@_window_dim { \l_@@_rightsep_dim }
+ \dim_zero:N \l_@@_l_dim
+ \dim_set_eq:NN \l_@@_r_dim \l_@@_window_dim
+ \cs_set_eq:NN \@@_build_box: \@@_build_hang:
+ }
+\cs_new_protected_nopar:Npn \@@_set_hang_right:
+ {
+ \bool_set_true:N \l_@@_hang_bool
+ \bool_if:NF \g_@@_hoffset_bool
+ { \@@_set_hoffset:NN \l_@@_leftsep_dim \use_ii_i:nn }
+ \dim_sub:Nn \l_@@_window_dim { \l_@@_leftsep_dim }
+ \dim_zero:N \l_@@_r_dim
+ \dim_set_eq:NN \l_@@_l_dim \l_@@_window_dim
+ \cs_set_eq:NN \@@_build_box: \@@_build_hang:
+ }
+\cs_new_protected_nopar:Npn \@@_set_window:
+ {
+ \bool_set_false:N \l_@@_hang_bool
+ \dim_sub:Nn \l_@@_window_dim
+ { \l_@@_leftsep_dim + \l_@@_rightsep_dim }
+ \dim_set:Nn \l_@@_l_dim
+ { \@@_ratio:Nn \l_@@_ratio_fp { \l_@@_window_dim } }
+ \dim_set:Nn \l_@@_r_dim
+ { \l_@@_window_dim - \l_@@_l_dim }
+ \bool_if:NTF \l_@@_column_bool
+ { \cs_set_eq:NN \@@_build_box: \@@_build_column: }
+ { \cs_set_eq:NN \@@_build_box: \@@_build_block: }
+ }
+\cs_new_protected:Npn \@@_set_hoffset:NN #1#2
+ {
+ \bool_gset_true:N \g_@@_hoffset_bool
+ \dim_set:Nn \l_@@_hoffset_width_dim
+ { #1 + \g_@@_stuff_wd_dim }
+ \group_begin:
+ \cs_set_eq:NN \width \l_@@_hoffset_width_dim
+ \dim_gset:Nn \g_@@_hoffset_dim { \l_@@_hoffset_tl }
+ \group_end:
+ \int_compare:nNnF \g_@@_hoffset_dim = \c_zero_dim
+ {
+ \hbox_gset:Nn \g_@@_stuff_box
+ {
+ #2 { \tex_kern:D - \g_@@_hoffset_dim }
+ { \box_use_drop:N \g_@@_stuff_box }
+ }
+ \dim_add:Nn \l_@@_window_dim { \g_@@_hoffset_dim }
+ }
+ }
+\dim_new:N \g_@@_hoffset_dim
+\dim_new:N \l_@@_hoffset_width_dim
+\bool_new:N \g_@@_hoffset_bool
+% \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@@_set_lines:, \@@_window_init:}
+% \begin{macrocode}
+\cs_new_protected_nopar:Npn \@@_set_lines:
+ {
+ \bool_if:NTF \g_@@_next_bool
+ { \tl_clear:N \l_@@_lines_tl }
+ { \tl_set:Nx \l_@@_lines_tl { \l_@@_lines_tl } }
+ \int_set:Nn \l_@@_window_int
+ {
+ \tl_if_empty:NTF \l_@@_lines_tl
+ { \@@_unit:n { \g_@@_remaining_dim + \l_@@_min_dim } }
+ { \l_@@_lines_tl }
+ }
+ \bool_if:NF \g_@@_next_bool
+ { \@@_window_init: }
+ \int_compare:nNnTF \g_@@_top_int < \c_zero_int
+ {
+ \int_compare:nNnT \l_@@_top_int < \c_zero_int
+ { \int_zero:N \l_@@_top_int }
+ }
+ { \int_set_eq:NN \l_@@_top_int \g_@@_top_int }
+ }
+\cs_new_protected_nopar:Npn \@@_window_init:
+ {
+ \int_gset_eq:NN \g_@@_column_window_int \l_@@_window_int
+ \dim_gset:Nn \g_@@_window_ht_dim
+ { \tex_baselineskip:D * \g_@@_column_window_int }
+ \tl_if_empty:NF \l_@@_lines_tl
+ {
+ \dim_gset:Nn \g_@@_remaining_dim
+ { \g_@@_window_ht_dim - \box_ht:N \strutbox }
+ \dim_gset_eq:NN \g_@@_stuff_ht_dim \g_@@_remaining_dim
+ }
+ }
+% \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@@_make_main_parshape:}
+% 主要处理用于标题悬挂的 \tn{@hangfrom} 和用于列表环境的 \tn{parshape}。
+% \begin{macrocode}
+\cs_new_protected_nopar:Npn \@@_make_main_parshape:
+ {
+ \dim_compare:nNnTF \g_@@_hangindent_dim > \c_zero_dim
+ {
+ \int_compare:nNnTF \g_@@_hangafter_int = \c_one_int
+ { \@@_make_hangfrom: }
+ { \@@_make_main_parshape_aux: }
+ }
+ { \@@_make_main_parshape_aux: }
+ }
+\cs_new_protected_nopar:Npn \@@_make_main_parshape_aux:
+ {
+ \bool_gset_false:N \g_@@_hangfrom_bool
+ \tex_parshape:D
+ \int_eval:n { \l_@@_top_int + 1 } ~
+ \prg_replicate:nn
+ { \l_@@_top_int }
+ { \g_@@_parshape_indent_dim \g_@@_parshape_length_dim }
+ \c_zero_dim \c_max_dim
+ }
+\cs_new_protected_nopar:Npn \@@_save_parshape:
+ {
+ \int_gset_eq:NN \g_@@_parshape_int \tex_parshape:D
+ \int_compare:nNnTF \g_@@_parshape_int = \c_one_int
+ {
+ \dim_gset:Nn \g_@@_parshape_indent_dim
+ { \tex_parshapeindent:D \c_one_int }
+ \dim_gset:Nn \g_@@_parshape_length_dim
+ { \tex_parshapelength:D \c_one_int }
+ }
+ {
+ \int_gzero:N \g_@@_parshape_int
+ \dim_gzero:N \g_@@_parshape_indent_dim
+ \dim_gset_eq:NN \g_@@_parshape_length_dim \l_@@_main_width_dim
+ \int_gset_eq:NN \g_@@_hangafter_int \tex_hangafter:D
+ \dim_gset_eq:NN \g_@@_hangindent_dim \tex_hangindent:D
+ }
+ }
+\cs_new_protected_nopar:Npn \@@_restore_parshape:
+ {
+ \int_compare:nNnTF \g_@@_parshape_int = \c_one_int
+ {
+ \tex_parshape:D \g_@@_parshape_int
+ \g_@@_parshape_indent_dim \g_@@_parshape_length_dim
+ }
+ { \@@_restore_hangfrom: }
+ }
+\cs_new_protected_nopar:Npn \@@_parshape_kern:
+ {
+ \dim_compare:nNnT \l_@@_l_dim = \c_zero_dim
+ {
+ \dim_compare:nNnF \g_@@_parshape_indent_dim = \c_zero_dim
+ { \tex_kern:D - \g_@@_parshape_indent_dim }
+ }
+ }
+\cs_new_protected_nopar:Npn \@@_make_hangfrom:
+ {
+ \bool_if:NTF \l_@@_hang_bool
+ { \@@_make_hangfrom_aux: }
+ { \@@_make_main_parshape_aux: }
+ }
+\cs_new_protected_nopar:Npn \@@_make_hangfrom_aux:
+ {
+ \@@_restore_hangfrom:
+ \int_zero:N \tex_parshape:D
+ \bool_gset_true:N \g_@@_hangfrom_bool
+ \dim_set_eq:NN \tex_hsize:D \l_@@_window_dim
+ }
+\cs_new_protected_nopar:Npn \@@_save_hangfrom:
+ {
+ \int_gset_eq:NN \g_@@_hangafter_int \tex_hangafter:D
+ \dim_gset_eq:NN \g_@@_hangindent_dim \tex_hangindent:D
+ }
+\cs_new_protected_nopar:Npn \@@_restore_hangfrom:
+ {
+ \int_set_eq:NN \tex_hangafter:D \g_@@_hangafter_int
+ \dim_set_eq:NN \tex_hangindent:D \g_@@_hangindent_dim
+ }
+\bool_new:N \g_@@_hangfrom_bool
+\int_new:N \g_@@_parshape_int
+\int_new:N \g_@@_hangafter_int
+\dim_new:N \g_@@_hangindent_dim
+\dim_new:N \g_@@_parshape_indent_dim
+\dim_new:N \g_@@_parshape_length_dim
+% \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@@_group_kludge:}
+% \LaTeX\ 的 \tn{list} 环境中，为了保持 \tn{parshape}，\tn{par} 被重定义为 |{\@@par}|。
+% \begin{macrocode}
+\cs_new_protected_nopar:Npn \@@_group_kludge:
+ {
+ \scan_stop:
+ \int_compare:nNnTF \tex_currentgrouptype:D = \c_one_int
+ {
+ \c_group_end_token
+ \cs_gset_eq:NN \@@_group_begin: \c_group_begin_token
+ }
+ { \cs_gset_eq:NN \@@_group_begin: \@@_empty: }
+ \legacy_if:nTF { @noitemarg }
+ { \cs_gset_eq:NN \@@_set_itemarg: \@noitemargtrue }
+ { \cs_gset_eq:NN \@@_set_itemarg: \@@_empty: }
+ }
+\cs_new_eq:NN \@@_set_itemarg: \@@_empty:
+\cs_new_eq:NN \@@_group_begin: \@@_empty:
+\@@_gadd_hook:nn { env/wrapstuff at par/after }
+ {
+ \@@_set_itemarg:
+ \@@_group_begin:
+ }
+% \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@@_ratio:Nn, \@@_unit:n}
+% \begin{macrocode}
+\cs_new:Npn \@@_ratio:Nn #1#2
+ { \fp_to_dim:n { #1 \dim_to_fp:n {#2} } }
+\cs_new:Npn \@@_unit:n #1
+ {
+ \fp_eval:n
+ {
+ ceil
+ (
+ \dim_to_decimal_in_unit:nn
+ {#1}
+ { \tex_baselineskip:D }
+ )
+ }
+ }
+% \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@@_save_tex_skip:,\@@_tex_parameter:}
+% \begin{macrocode}
+\cs_new_protected_nopar:Npn \@@_save_tex_skip:
+ {
+ \skip_gset_eq:NN \g_@@_left_skip \tex_leftskip:D
+ \skip_gset_eq:NN \g_@@_right_skip \tex_rightskip:D
+ \skip_gset_eq:NN \g_@@_parfill_skip \tex_parfillskip:D
+ \skip_gset_eq:NN \g_@@_baseline_skip \tex_baselineskip:D
+ \skip_gset:Nn \g_@@_main_left_skip { - \tex_leftskip:D }
+ }
+\cs_new_protected_nopar:Npn \@@_adjust_tex_skip:
+ {
+ \@@_adjust_skip:N \g_@@_left_skip
+ \@@_adjust_skip:N \g_@@_right_skip
+ \@@_adjust_skip:N \g_@@_parfill_skip
+ }
+\cs_new_protected:Npn \@@_adjust_skip:N #1
+ { \skip_gsub:Nn #1 { \dim_eval:n {#1} } }
+\cs_new_protected_nopar:Npn \@@_tex_parameter:
+ {
+ \int_zero:N \tex_clubpenalty:D
+ \int_zero:N \tex_widowpenalty:D
+ \int_zero:N \tex_interlinepenalty:D
+ \int_zero:N \tex_displaywidowpenalty:D
+ \int_zero:N \tex_clubpenalties:D
+ \int_zero:N \tex_widowpenalties:D
+ \int_zero:N \tex_interlinepenalties:D
+ \int_zero:N \tex_displaywidowpenalties:D
+ \skip_set_eq:NN \tex_leftskip:D \g_@@_left_skip
+ \skip_set_eq:NN \tex_rightskip:D \g_@@_right_skip
+ \skip_set_eq:NN \tex_parfillskip:D \g_@@_parfill_skip
+ }
+\skip_new:N \g_@@_left_skip
+\skip_new:N \g_@@_right_skip
+\skip_new:N \g_@@_parfill_skip
+\skip_new:N \g_@@_baseline_skip
+\skip_new:N \g_@@_main_left_skip
+% \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@@_display_parameter:}
+% \begin{macrocode}
+\cs_new_protected_nopar:Npn \@@_display_parameter:
+ {
+ \bool_gset_false:N \g_@@_display_bool
+ \tex_everydisplay:D \exp_after:wN
+ {
+ \tex_the:D \tex_everydisplay:D
+ \@@_test_leqno:
+ \dim_compare:nNnF \tex_displaywidth:D < \c_max_dim
+ {
+ \bool_gset_true:N \g_@@_display_bool
+ \dim_set_eq:NN \tex_displaywidth:D \l_@@_display_dim
+ }
+ }
+ }
+\cs_new_eq:NN \@@_test_leqno: \@@_empty:
+\bool_new:N \g_@@_display_bool
+% \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@@_build_par:}
+% \begin{macrocode}
+\cs_new_protected_nopar:Npn \@@_build_par:
+ {
+ \bool_if:NTF \g_@@_hangfrom_bool
+ { \@@_build_box: }
+ { \@@_build_par_aux: }
+ \box_if_empty:NTF \l_@@_window_box
+ { \@@_put_next_par: }
+ { \@@_put_box: }
+ }
+\cs_new_protected_nopar:Npn \@@_build_par_aux:
+ {
+ \@@_extract_display_hbox:NN \l_@@_body_box \l_@@_bottom_box
+ \int_compare:nNnT \l_@@_top_int > \c_zero_int
+ { \@@_put_body_box: }
+ \box_if_empty:NTF \l_@@_bottom_box
+ {
+ \box_if_empty:NF \g_@@_display_box
+ { \@@_build_display_box: }
+ }
+ { \@@_build_body_box: }
+ }
+\box_new:N \l_@@_bottom_box
+% \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@@_put_par:}
+% \begin{macrocode}
+\cs_new_protected_nopar:Npn \@@_put_par:
+ {
+ \int_gset:Nn \g_@@_top_int
+ { \l_@@_top_int - \g_@@_line_int }
+ \int_gzero:N \g_@@_window_int
+ \@@_put_body_box:
+ \skip_zero:N \tex_parskip:D
+ \para_raw_noindent:
+ \@@_next_para:
+ }
+% \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@@_put_body_box:}
+% \begin{macrocode}
+\cs_new_protected_nopar:Npn \@@_put_body_box:
+ {
+ \para_raw_end:
+ \dim_compare:nNnTF { \box_wd:N \l_@@_body_box } < \c_max_dim
+ { \@@_put_body_aux:N \l_@@_body_box }
+ {
+ \@@_extract_hbox:NN \l_@@_body_box \l_@@_bottom_box
+ \@@_put_body_aux:N \l_@@_body_box
+ \box_set_eq_drop:NN \l_@@_body_box \l_@@_bottom_box
+ }
+ \para_raw_end:
+ }
+\cs_new_protected_nopar:Npn \@@_put_body_aux:N #1
+ {
+ \dim_gset:Nn \g_@@_prevdepth_dim { \box_dp:N #1 }
+ \vbox_unpack_drop:N #1
+ \@@_set_prevdepth:N \g_@@_prevdepth_dim
+ }
+% \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@@_put_next_par:}
+% \begin{macrocode}
+\cs_new_protected_nopar:Npn \@@_put_next_par:
+ {
+ \int_gzero:N \g_@@_top_int
+ \int_gzero:N \g_@@_window_int
+ \skip_zero:N \tex_parskip:D
+ \para_raw_noindent:
+ \@@_next_para:
+ }
+% \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@@_build_display_box:}
+% \begin{macrocode}
+\cs_new_protected_nopar:Npn \@@_build_display_box:
+ {
+ \bool_set_true:N \l_@@_display_bool
+ \bool_if:NTF \g_@@_amsmath_bool
+ { \@@_build_display_amsmath: }
+ { \@@_build_display_normal: }
+ \box_if_empty:NTF \l_@@_body_box
+ { \@@_build_display_auxi: }
+ { \@@_build_display_auxii: }
+ }
+\cs_new_protected_nopar:Npn \@@_build_display_amsmath:
+ {
+ \vbox_gset:Nn \g_@@_equation_box
+ {
+ \skip_vertical:n { - \g_@@_display_pre_skip }
+ \vbox_unpack_drop:N \g_@@_display_box
+ \skip_gset_eq:NN \g_@@_pos_skip \tex_lastskip:D
+ \tex_unskip:D
+ \int_gset_eq:NN \g_@@_pos_int \tex_lastpenalty:D
+ \tex_unpenalty:D
+ \skip_gadd:Nn \g_@@_pos_skip { \tex_lastskip:D }
+ \tex_unskip:D
+ \tex_unpenalty:D
+ }
+ \box_gset_wd:Nn \g_@@_equation_box
+ { \l_@@_display_dim }
+ \vbox_gset:Nn \g_@@_display_box
+ {
+ \tex_penalty:D \g_@@_display_pre_int
+ \skip_vertical:N \g_@@_display_pre_skip
+ }
+ \skip_gset_eq:NN \g_@@_pre_skip \g_@@_display_pre_skip
+ }
+\cs_new_protected_nopar:Npn \@@_build_display_normal:
+ {
+ \vbox_gset:Nn \g_@@_display_box
+ {
+ \vbox_unpack_drop:N \g_@@_display_box
+ \skip_gset_eq:NN \g_@@_pos_skip \tex_lastskip:D
+ \tex_unskip:D
+ \int_gset_eq:NN \g_@@_pos_int \tex_lastpenalty:D
+ \tex_unpenalty:D
+ \box_gset_to_last:N \g_@@_equation_box
+ \skip_gset_eq:NN \g_@@_pre_skip \tex_lastskip:D
+ \tex_unskip:D
+ \skip_gadd:Nn \g_@@_pre_skip { \tex_lastskip:D }
+ \tex_unskip:D
+ \skip_vertical:N \g_@@_pre_skip
+ }
+ }
+\cs_new_protected_nopar:Npn \@@_build_display_auxi:
+ {
+ \bool_if:NTF \g_@@_amsmath_bool
+ { \box_set_eq_drop:NN \l_@@_window_box \g_@@_equation_box }
+ {
+ \hbox_set_to_wd:Nnn \l_@@_window_box
+ { \l_@@_display_dim }
+ {
+ \tex_hss:D
+ \@@_adjust_equation:
+ \box_use_drop:N \g_@@_equation_box
+ \tex_hss:D
+ }
+ }
+ \dim_gset:Nn \g_@@_ht_dim { \box_ht:N \l_@@_window_box }
+ \dim_add:Nn \l_@@_voffset_dim
+ { \box_ht:N \g_@@_display_box / 2 }
+ }
+\cs_new_protected_nopar:Npn \@@_build_display_auxii:
+ {
+ \box_if_horizontal:NTF \l_@@_body_box
+ {
+ \box_set_eq:NN \l_@@_bottom_box \l_@@_body_box
+ \@@_build_display_auxiii:
+ }
+ {
+ \@@_extract_hbox:NN \l_@@_body_box \l_@@_bottom_box
+ \str_if_eq:eeTF
+ {
+ \dim_eval:n { \box_ht:N \l_@@_body_box }
+ \dim_eval:n { \box_dp:N \l_@@_body_box }
+ \dim_eval:n { \box_ht:N \l_@@_bottom_box }
+ \dim_eval:n { \box_dp:N \l_@@_bottom_box }
+ }
+ { \c_@@_zero_pt_str }
+ {
+ \vbox_unpack_drop:N \l_@@_body_box
+ \box_clear:N \l_@@_bottom_box
+ \@@_build_display_auxi:
+ }
+ { \@@_build_display_auxiii: }
+ }
+ }
+\str_const:Nx \c_@@_zero_pt_str
+ {
+ \dim_use:N \c_zero_dim
+ \dim_use:N \c_zero_dim
+ \dim_use:N \c_zero_dim
+ \dim_use:N \c_zero_dim
+ }
+\cs_new_protected_nopar:Npn \@@_build_display_auxiii:
+ {
+ \bool_set_true:N \l_@@_attach_equation_bool
+ \bool_if:NTF \g_@@_amsmath_bool
+ { \box_set_eq_drop:NN \l_@@_display_box \g_@@_display_box }
+ {
+ \box_gclear:N \g_@@_display_box
+ \@@_adjust_equation:
+ }
+ \@@_build_body_box:
+ }
+\cs_new_protected_nopar:Npn \@@_attach_equation:N
+ {
+ \bool_if:NTF \g_@@_amsmath_bool
+ { \@@_attach_equation_amsmath:N }
+ { \@@_attach_equation_normal:N }
+ }
+\cs_new_protected:Npn \@@_attach_equation_amsmath:N #1
+ {
+ \vbox_set:Nn #1
+ {
+ \box_use:N #1
+ \@@_ignore_depth:
+ \vbox_unpack_drop:N \l_@@_display_box
+ \skip_vertical:n
+ { \g_@@_display_pre_dim - \box_dp:N #1 }
+ \box_use_drop:N \g_@@_equation_box
+ }
+ }
+\cs_new_protected:Npn \@@_attach_equation_normal:N #1
+ {
+ \vbox_set:Nn #1
+ {
+ \@@_tex_parameter:
+ \dim_set_eq:NN \tex_hsize:D \l_@@_display_dim
+ \para_raw_noindent:
+ \hbox_unpack_drop:N #1 \tex_unskip:D
+ \@@_insert_equation:
+ \para_raw_end:
+ \skip_gset_eq:NN \g_@@_pos_skip \tex_lastskip:D
+ \tex_unskip:D
+ \int_gset_eq:NN \g_@@_pos_int \tex_lastpenalty:D
+ \tex_unpenalty:D
+ }
+ }
+\cs_new_protected_nopar:Npn \@@_insert_equation:
+ {
+ \c_math_toggle_token \c_math_toggle_token
+ \dim_compare:nNnTF \tex_displaywidth:D = \l_@@_display_dim
+ { \box_use_drop:N \g_@@_equation_box }
+ {
+ \bool_if:NTF \g_@@_eqnum_bool
+ { \@@_repack_equation: }
+ { \box_use_drop:N \g_@@_equation_box }
+ }
+ \c_math_toggle_token \c_math_toggle_token
+ }
+\cs_new_protected_nopar:Npn \@@_repack_equation:
+ {
+ \box_gclear:N \g_@@_equation_box
+ \box_use_drop:N \g_@@_eqbody_box
+ \bool_if:NTF \g_@@_leqno_bool
+ { \tex_leqno:D }
+ { \tex_eqno:D }
+ \box_use_drop:N \g_@@_eqnum_box
+ }
+\cs_new_protected_nopar:Npn \@@_adjust_equation:
+ {
+ \@@_test_eqnum:
+ \bool_if:NT \g_@@_eqnum_bool
+ { \@@_adjust_equation_width: }
+ }
+\cs_new_protected_nopar:Npn \@@_test_eqnum:
+ {
+ \hbox_set:Nn \l_@@_last_box
+ {
+ \bool_gset_false:N \g_@@_eqnum_bool
+ \hbox_unpack:N \g_@@_equation_box
+ \@@_if_last_hlist:F { \use_none_delimit_by_q_stop:w }
+ \box_gset_to_last:N \g_@@_eqnum_box
+ \@@_if_last_kern:F { \use_none_delimit_by_q_stop:w }
+ \tex_unkern:D
+ \@@_if_last_hlist:F { \use_none_delimit_by_q_stop:w }
+ \box_gset_to_last:N \g_@@_eqbody_box
+ \@@_if_last_none:F { \use_none_delimit_by_q_stop:w }
+ \bool_gset_true:N \g_@@_eqnum_bool
+ \use_none_delimit_by_q_stop:w \q_stop
+ }
+ }
+\cs_new_protected_nopar:Npn \@@_adjust_equation_width:
+ {
+ \bool_if:NTF \g_@@_leqno_bool
+ { \@@_adjust_leqno: }
+ {
+ \box_gset_wd:Nn \g_@@_equation_box
+ { \box_wd:N \g_@@_eqbody_box }
+ }
+ }
+\cs_new_protected_nopar:Npn \@@_adjust_leqno:
+ {
+ \box_set_eq_drop:NN \l_@@_last_box \g_@@_eqnum_box
+ \box_gset_eq_drop:NN \g_@@_eqnum_box \g_@@_eqbody_box
+ \box_gset_eq_drop:NN \g_@@_eqbody_box \l_@@_last_box
+ \hbox_gset:Nn \g_@@_equation_box
+ {
+ \skip_horizontal:n
+ {
+ \box_wd:N \g_@@_eqbody_box
+ - \box_wd:N \g_@@_equation_box
+ }
+ \box_use_drop:N \g_@@_equation_box
+ }
+ }
+\box_new:N \g_@@_eqbody_box
+\box_new:N \g_@@_eqnum_box
+\box_new:N \g_@@_equation_box
+\box_new:N \l_@@_display_box
+\int_new:N \g_@@_pos_int
+\skip_new:N \g_@@_pos_skip
+\bool_new:N \g_@@_eqnum_bool
+\bool_new:N \g_@@_leqno_bool
+\bool_new:N \l_@@_display_bool
+\bool_new:N \l_@@_attach_equation_bool
+% \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@@_add_pos_skip:}
+% \begin{macrocode}
+\cs_new_protected_nopar:Npn \@@_add_pos_skip:
+ {
+ \bool_lazy_or:nnTF
+ { \g_@@_right_move_bool }
+ { \int_compare_p:nNn \g_@@_window_int > \c_zero_int }
+ {
+ \tex_vadjust:D
+ {
+ \tex_penalty:D \c_@@_nobreak_int
+ \bool_if:NT \l_@@_display_bool
+ { \skip_vertical:N \g_@@_pos_skip }
+ }
+ }
+ {
+ \bool_if:NT \l_@@_display_bool
+ {
+ \tex_vadjust:D
+ {
+ \tex_penalty:D \g_@@_pos_int
+ \skip_vertical:N \g_@@_pos_skip
+ }
+ }
+ }
+ \int_gzero:N \g_@@_pos_int
+ \skip_gzero:N \g_@@_pos_skip
+ }
+% \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@@_build_body_box:}
+% \begin{macrocode}
+\cs_new_protected_nopar:Npn \@@_build_body_box:
+ {
+ \box_set_eq:NN \l_@@_save_body_box \l_@@_bottom_box
+ \@@_build_window:
+ \int_compare:nNnTF \g_@@_line_int > \l_@@_window_line_int
+ { \@@_extract_hbox:NN \l_@@_body_box \l_@@_bottom_box }
+ { \box_clear:N \l_@@_bottom_box }
+ \box_if_empty:NF \l_@@_bottom_box
+ { \bool_set_false:N \l_@@_attach_equation_bool }
+ \box_clear:N \l_@@_window_box
+ \@@_build_box:
+ }
+\box_new:N \l_@@_save_body_box
+% \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@@_build_body_box:}
+% \begin{macrocode}
+\cs_new_protected_nopar:Npn \@@_build_window:
+ {
+ \vbox_set:Nn \l_@@_body_box
+ {
+ \@@_tex_parameter:
+ \@@_make_parshape:
+ \@@_column_penalties:
+ \dim_zero:N \tex_emergencystretch:D
+ \dim_set_eq:NN \tex_hfuzz:D \c_max_dim
+ \dim_set_eq:NN \tex_vfuzz:D \c_max_dim
+ \int_set_eq:NN \tex_hbadness:D \c_max_int
+ \int_set_eq:NN \tex_vbadness:D \c_max_int
+ \int_set:Nn \tex_tolerance:D { 1000 }
+ \para_raw_noindent:
+ \hbox_unpack_drop:N \l_@@_bottom_box
+ \para_raw_end:
+ \int_gset_eq:NN \g_@@_line_int \tex_prevgraf:D
+ }
+ }
+% \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@@_make_parshape:}
+% \begin{macrocode}
+\cs_new_protected_nopar:Npn \@@_make_parshape:
+ {
+ \tex_parshape:D
+ \int_eval:n { \l_@@_window_line_int + 1 } ~
+ \bool_if:NTF \l_@@_hang_bool
+ {
+ \prg_replicate:nn
+ { \l_@@_window_int }
+ { \c_zero_dim \l_@@_window_dim }
+ }
+ {
+ \bool_if:NTF \l_@@_column_bool
+ {
+ \prg_replicate:nn
+ { \l_@@_window_int / 2 }
+ { \c_zero_dim \l_@@_l_dim }
+ \prg_replicate:nn
+ {
+ \bool_if:NTF \g_@@_column_right_bool
+ { \g_@@_column_window_int }
+ { \l_@@_window_int / 2 }
+ }
+ { \c_zero_dim \l_@@_r_dim }
+ }
+ {
+ \prg_replicate:nn
+ { \l_@@_window_int / 2 }
+ {
+ \c_zero_dim \l_@@_l_dim
+ \c_zero_dim \l_@@_r_dim
+ }
+ }
+ }
+ \c_zero_dim \c_max_dim
+ }
+% \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@@_column_penalties:}
+% \begin{macrocode}
+\cs_new_protected_nopar:Npn \@@_column_penalties:
+ {
+ \bool_if:NF \l_@@_hang_bool
+ {
+ \bool_if:NT \l_@@_column_bool
+ { \@@_column_penalties_aux: }
+ }
+ }
+\cs_new_protected_nopar:Npn \@@_column_penalties_aux:
+ {
+ \tex_interlinepenalties:D
+ \int_eval:n { \l_@@_window_int / 2 + \c_one_int } ~
+ \prg_replicate:nn
+ { \l_@@_window_int / 2 - \c_one_int }
+ { \c_@@_nobreak_int }
+ \c_@@_break_int
+ \c_zero_int
+ }
+% \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@@_build_box:, \@@_build_block:}
+% \begin{macrocode}
+\cs_new_protected_nopar:Npn \@@_build_block:
+ {
+ \@@_build_block_auxi:
+ \vbox_set:Nn \l_@@_window_box
+ {
+ \@@_tex_parameter:
+ \dim_set_eq:NN \tex_hsize:D \l_@@_line_dim
+ \para_raw_noindent:
+ \hbox_unpack_drop:N \g_@@_line_box
+ \para_raw_end:
+ }
+ \bool_if:NT \l_@@_attach_equation_bool
+ {
+ \box_set_ht:Nn \l_@@_window_box
+ { \box_ht_plus_dp:N \l_@@_window_box - \g_@@_dp_dim }
+ \box_set_dp:Nn \l_@@_window_box { \g_@@_dp_dim }
+ }
+ }
+\cs_new_protected_nopar:Npn \@@_build_block_auxi:
+ {
+ \vbox_set:Nn \l_@@_body_box
+ {
+ \vbox_unpack_drop:N \l_@@_body_box
+ \bool_lazy_and:nnTF
+ { \box_if_empty_p:N \l_@@_bottom_box }
+ { \int_if_odd_p:n { \g_@@_line_int } }
+ { \box_set_eq:NN \l_@@_r_box \l_@@_empty_box }
+ {
+ \box_set_to_last:N \l_@@_r_box
+ \tex_unskip:D \tex_unpenalty:D
+ }
+ \box_set_to_last:N \l_@@_l_box
+ \tex_unskip:D \tex_unpenalty:D
+ \hbox_gset:Nn \g_@@_line_box
+ {
+ \bool_if:NT \l_@@_attach_equation_bool
+ { \@@_build_block_attach: }
+ \box_use:N \l_@@_l_box
+ \tex_hfill:D
+ \box_use:N \l_@@_r_box
+ }
+ \@@_build_block_auxii:
+ }
+ }
+\cs_new_protected_nopar:Npn \@@_build_block_auxii:
+ {
+ \int_case:nnTF
+ { \tex_lastnodetype:D }
+ {
+ { \c_@@_none_node } { }
+ { \c_@@_whatsit_node } { }
+ }
+ { \@@_build_block_finalise: }
+ { \@@_build_block_auxiii: }
+ }
+\cs_new_protected_nopar:Npn \@@_build_block_auxiii:
+ {
+ \box_set_to_last:N \l_@@_r_box
+ \tex_unskip:D \tex_unpenalty:D
+ \box_set_to_last:N \l_@@_l_box
+ \tex_unskip:D \tex_unpenalty:D
+ \hbox_gset:Nn \g_@@_line_box
+ {
+ \box_use:N \l_@@_l_box
+ \tex_hfill:D
+ \box_use:N \l_@@_r_box
+ \tex_penalty:D \c_@@_break_int
+ \hbox_unpack_drop:N \g_@@_line_box
+ }
+ \@@_build_block_auxii:
+ }
+\cs_new_protected_nopar:Npn \@@_build_block_attach:
+ {
+ \box_set_eq:NN \l_@@_last_box \l_@@_l_box
+ \@@_attach_equation:N \l_@@_last_box
+ \dim_gset:Nn \g_@@_dp_dim { \box_dp:N \l_@@_last_box }
+ \hbox_set:Nn \l_@@_l_box
+ {
+ \box_move_down:nn
+ { \box_ht:N \l_@@_last_box - \box_ht:N \l_@@_l_box }
+ { \box_use_drop:N \l_@@_last_box }
+ }
+ }
+\cs_new_protected_nopar:Npn \@@_build_block_finalise:
+ {
+ \dim_gset:Nn \g_@@_ht_dim
+ {
+ \dim_max:nn
+ { \box_ht:N \l_@@_l_box }
+ { \box_ht:N \l_@@_r_box }
+ }
+ }
+\dim_new:N \g_@@_dp_dim
+\dim_new:N \g_@@_ht_dim
+\box_new:N \l_@@_l_box
+\box_new:N \l_@@_r_box
+\box_new:N \g_@@_line_box
+\box_new:N \l_@@_empty_box
+\hbox_set:Nn \l_@@_empty_box { }
+\int_const:Nn \c_@@_break_int { -10000 }
+\int_const:Nn \c_@@_nobreak_int { 10000 }
+% \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@@_build_column_fuzzy:}
+% \begin{macrocode}
+\cs_new_protected_nopar:Npn \@@_build_column_fuzzy:
+ {
+ \hbox_set_to_wd:Nnn \l_@@_window_box
+ { \l_@@_line_dim }
+ {
+ \skip_zero:N \tex_splittopskip:D
+ \dim_set_eq:NN \tex_vfuzz:D \c_max_dim
+ \int_set_eq:NN \tex_vbadness:D \c_max_int
+ \@@_build_column_aux:
+ \box_if_empty:NT \l_@@_bottom_box
+ { \@@_build_column_fuzzy_aux: }
+ \dim_gset:Nn \g_@@_ht_dim { \box_ht:N \l_@@_l_box }
+ \vbox_set:Nn \l_@@_l_box
+ {
+ \vbox_unpack_drop:N \l_@@_l_box
+ \bool_if:NT \l_@@_attach_equation_bool
+ {
+ \box_set_to_last:N \l_@@_last_box
+ \@@_attach_equation:N \l_@@_last_box
+ \vbox_unpack_drop:N \l_@@_last_box
+ }
+ }
+ \box_use:N \l_@@_l_box
+ \tex_hfil:D
+ \box_move_up:nn
+ { \box_ht:N \l_@@_l_box - \box_ht:N \l_@@_r_box }
+ { \box_use_drop:N \l_@@_r_box }
+ }
+ }
+\cs_new_protected_nopar:Npn \@@_build_column_aux:
+ {
+ \vbox_set_split_to_ht:NNn \l_@@_l_box \l_@@_body_box
+ { \c_zero_dim }
+ \vbox_set_top:Nn \l_@@_l_box
+ { \vbox_unpack_drop:N \l_@@_l_box }
+ \box_set_eq_drop:NN \l_@@_r_box \l_@@_body_box
+ }
+\cs_new_protected_nopar:Npn \@@_build_column_fuzzy_aux:
+ {
+ \dim_compare:nNnTF
+ {
+ \box_ht_plus_dp:N \l_@@_r_box -
+ \box_ht_plus_dp:N \l_@@_l_box
+ }
+ >
+ { \l_@@_min_dim }
+ {
+ \box_if_empty:NF \l_@@_last_l_box
+ {
+ \box_set_eq_drop:NN \l_@@_l_box \l_@@_last_l_box
+ \box_set_eq_drop:NN \l_@@_r_box \l_@@_last_r_box
+ }
+ }
+ { \@@_rebuild_window: }
+ }
+\cs_new_protected_nopar:Npn \@@_rebuild_window:
+ {
+ \int_compare:nNnT \l_@@_window_int > { 2 }
+ {
+ \int_sub:Nn \l_@@_window_int { 2 }
+ \box_set_eq_drop:NN \l_@@_last_l_box \l_@@_l_box
+ \box_set_eq_drop:NN \l_@@_last_r_box \l_@@_r_box
+ \box_set_eq:NN \l_@@_bottom_box \l_@@_save_body_box
+ \int_set_eq:NN \l_@@_window_line_int \l_@@_window_int
+ \@@_build_window:
+ \@@_build_column_aux:
+ \@@_build_column_fuzzy_aux:
+ }
+ }
+% \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@@_build_column_strict:}
+% \begin{macrocode}
+\cs_new_protected_nopar:Npn \@@_build_column_strict:
+ {
+ \group_begin:
+ \skip_zero:N \tex_splittopskip:D
+ \dim_set_eq:NN \tex_vfuzz:D \c_max_dim
+ \int_set_eq:NN \tex_vbadness:D \c_max_int
+ \@@_build_column_aux:
+ \box_if_empty:NTF \l_@@_r_box
+ { \@@_build_column_strict_auxi: }
+ {
+ \box_if_empty:NTF \l_@@_bottom_box
+ { \@@_build_column_strict_auxii: }
+ {
+ \bool_if:NTF \g_@@_column_right_bool
+ { \@@_build_column_strict_auxiii: }
+ { \@@_build_column_strict_auxiv: }
+ }
+ }
+ \group_end:
+ \box_set_eq_drop:NN \l_@@_window_box \g_@@_window_box
+ }
+\cs_new_protected_nopar:Npn \@@_build_column_strict_auxi:
+ {
+ \@@_repack_left_box:
+ \bool_if:NT \l_@@_attach_equation_bool
+ { \@@_column_attach:N \l_@@_l_box }
+ \box_gset_eq_drop:NN \g_@@_window_box \l_@@_l_box
+ \bool_gset_true:N \g_@@_column_right_bool
+ \bool_if:NF \g_@@_first_save_bool
+ {
+ \bool_gset_true:N \g_@@_first_save_bool
+ \dim_gset:Nn \g_@@_first_sep_dim
+ { \tex_baselineskip:D - \g_@@_ht_dim }
+ \dim_gset_eq:NN \g_@@_first_dp_dim \g_@@_prevdepth_dim
+ }
+ \int_case:nnT { \g_@@_window_int }
+ {
+ { \c_zero_int } { }
+ { \g_@@_line_int } { }
+ }
+ { \@@_column_move_entire_aux: }
+ }
+\cs_new_protected_nopar:Npn \@@_column_move_entire_aux:
+ {
+ \bool_gset_true:N \g_@@_entire_bool
+ \bool_gset_true:N \g_@@_next_hang_bool
+ }
+\cs_new_protected_nopar:Npn \@@_column_move_entire:
+ {
+ \dim_gsub:Nn \g_@@_first_sep_dim
+ { \box_dp:N \l_@@_window_box }
+ \bool_gset_false:N \g_@@_entire_bool
+ \dim_gzero:N \g_@@_column_right_ht_dim
+ \dim_gset_eq:NN \g_@@_prevdepth_dim \g_@@_first_dp_dim
+ \@@_column_right_move_set:nn
+ { \g_@@_stuff_ht_dim }
+ { \g_@@_window_ht_dim }
+ \int_gset_eq:NN \g_@@_window_int \g_@@_column_window_int
+ }
+\cs_new_protected:Npn \@@_column_right_move_set:nn #1#2
+ {
+ \bool_gset_true:N \g_@@_right_move_bool
+ \bool_gset_true:N \g_@@_first_set_bool
+ \tl_gput_right:Nn \g_@@_main_setting_tl
+ {
+ \bool_if:NTF \g_@@_first_set_bool
+ {
+ \bool_gset_false:N \g_@@_first_set_bool
+ \bool_set_true:N \l_@@_first_move_bool
+ }
+ { \bool_set_false:N \l_@@_first_move_bool }
+ \fp_zero:N \l_@@_ratio_fp
+ }
+ \@@_make_next_stuff:nn
+ { \l_@@_line_dim - \l_@@_r_dim - \l_@@_rightsep_dim }
+ {#1}
+ \dim_gset:Nn \g_@@_column_left_dim {#2}
+ \int_gzero:N \g_@@_top_int
+ }
+\cs_new_protected_nopar:Npn \@@_build_column_strict_auxii:
+ {
+ \bool_gset_false:N \g_@@_entire_bool
+ \@@_repack_left_box:
+ \bool_if:NT \l_@@_attach_equation_bool
+ { \@@_column_attach:N \l_@@_r_box }
+ \dim_gset:Nn \g_@@_hang_ht_dim
+ {
+ \g_@@_stuff_ht_dim - \tex_baselineskip:D *
+ \@@_unit:n { \box_ht_plus_dp:N \l_@@_r_box }
+ - \g_@@_pos_skip
+ }
+ \dim_compare:nNnTF \g_@@_hang_ht_dim > \c_zero_dim
+ { \@@_column_move_right: }
+ { \@@_column_put_right: }
+ \box_gset_ht:Nn \g_@@_window_box { \box_ht:N \l_@@_l_box }
+ \box_gset_dp:Nn \g_@@_window_box { \box_dp:N \l_@@_l_box }
+ }
+\cs_new_protected_nopar:Npn \@@_column_move_right:
+ {
+ \int_compare:nNnTF \g_@@_window_int > \c_zero_int
+ {
+ \dim_gset:Nn \g_@@_column_left_dim
+ {
+ \g_@@_window_ht_dim
+ - \g_@@_first_sep_dim
+ - \box_ht:N \l_@@_r_box
+ }
+ \@@_next_hang_para:
+ }
+ {
+ \dim_gset:Nn \g_@@_column_left_dim
+ {
+ \box_ht:N \l_@@_l_box
+ - \box_ht:N \l_@@_r_box
+ }
+ \dim_gset:Nn \g_@@_first_sep_dim
+ { \tex_baselineskip:D - \g_@@_ht_dim }
+ \bool_gset_true:N \g_@@_right_move_bool
+ \bool_gset_true:N \g_@@_next_hang_bool
+ }
+ \hbox_gset_to_wd:Nnn \g_@@_window_box
+ { \l_@@_line_dim }
+ {
+ \box_use:N \l_@@_l_box
+ \tex_hfil:D
+ \box_move_up:nn
+ { \g_@@_column_left_dim }
+ { \box_use:N \l_@@_r_box }
+ }
+ \dim_gset:Nn \g_@@_column_right_ht_dim
+ { \box_ht:N \l_@@_r_box + \g_@@_pos_skip }
+ }
+\cs_new_protected_nopar:Npn \@@_column_put_right:
+ {
+ \hbox_gset_to_wd:Nnn \g_@@_window_box
+ { \l_@@_line_dim }
+ {
+ \box_use:N \l_@@_l_box
+ \tex_hfil:D
+ \box_move_up:nn
+ {
+ \int_compare:nNnTF \g_@@_window_int > \c_zero_int
+ { \g_@@_window_ht_dim - \g_@@_first_sep_dim }
+ { \box_ht:N \l_@@_l_box }
+ - \box_ht:N \l_@@_r_box
+ }
+ { \box_use:N \l_@@_r_box }
+ }
+ \skip_gzero:N \g_@@_pos_skip
+ }
+\cs_new_protected_nopar:Npn \@@_next_hang_para:
+ {
+ \bool_if:NTF \g_@@_entire_bool
+ { \@@_column_move_entire: }
+ {
+ \@@_column_right_move_set:nn
+ { \g_@@_hang_ht_dim }
+ { \g_@@_column_left_dim }
+ \int_gzero:N \g_@@_window_int
+ }
+ \bool_gset_false:N \g_@@_next_hang_bool
+ }
+\cs_new_protected_nopar:Npn \@@_build_column_strict_auxiii:
+ {
+ \bool_gset_false:N \g_@@_column_right_bool
+ \@@_repack_left_box:
+ \hbox_gset_to_wd:Nnn \g_@@_window_box
+ { \l_@@_line_dim }
+ {
+ \box_use:N \l_@@_l_box
+ \tex_hfil:D
+ \box_use:N \l_@@_r_box
+ }
+ \box_gset_ht:Nn \g_@@_window_box
+ { \box_ht:N \l_@@_l_box }
+ }
+\cs_new_protected_nopar:Npn \@@_build_column_strict_auxiv:
+ {
+ \@@_repack_left_box:
+ \hbox_gset_to_wd:Nnn \g_@@_window_box
+ { \l_@@_line_dim }
+ {
+ \box_use:N \l_@@_l_box
+ \tex_hfil:D
+ \box_move_up:nn
+ { \box_ht:N \l_@@_l_box - \box_ht:N \l_@@_r_box }
+ { \box_use_drop:N \l_@@_r_box }
+ }
+ }
+\cs_new_protected_nopar:Npn \@@_repack_left_box:
+ {
+ \dim_gset:Nn \g_@@_ht_dim { \box_ht:N \l_@@_l_box }
+ \vbox_set:Nn \l_@@_l_box
+ { \vbox_unpack_drop:N \l_@@_l_box }
+ }
+\cs_new_protected_nopar:Npn \@@_column_attach:N #1
+ {
+ \vbox_set:Nn #1
+ {
+ \vbox_unpack_drop:N #1
+ \box_set_to_last:N \l_@@_last_box
+ \@@_attach_equation:N \l_@@_last_box
+ \vbox_unpack_drop:N \l_@@_last_box
+ }
+ }
+\box_new:N \l_@@_last_l_box
+\box_new:N \l_@@_last_r_box
+\box_new:N \g_@@_window_box
+\dim_new:N \g_@@_fake_wd_dim
+\dim_new:N \g_@@_first_dp_dim
+\dim_new:N \g_@@_first_sep_dim
+\dim_new:N \g_@@_column_left_dim
+\dim_new:N \g_@@_column_right_ht_dim
+\bool_new:N \g_@@_entire_bool
+\bool_new:N \g_@@_next_hang_bool
+\bool_new:N \g_@@_first_save_bool
+\bool_new:N \g_@@_column_right_bool
+\bool_new:N \l_@@_column_strict_bool
+\bool_new:N \g_@@_first_set_bool
+\bool_new:N \l_@@_first_move_bool
+\bool_new:N \g_@@_right_move_bool
+% \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@@_build_box:,\@@_build_column:}
+% \begin{macrocode}
+\bool_new:N \l_@@_column_bool
+\cs_new_eq:NN \@@_build_column: \@@_build_column_strict:
+\cs_new_eq:NN \@@_build_box: \@@_build_column:
+% \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@@_build_hang:}
+% \begin{macrocode}
+\cs_new_protected_nopar:Npn \@@_build_hang:
+ {
+ \bool_if:NTF \g_@@_hangfrom_bool
+ { \@@_build_hangfrom: }
+ {
+ \vbox_set_top:Nn \l_@@_window_box
+ { \vbox_unpack:N \l_@@_body_box }
+ \dim_gset:Nn \g_@@_ht_dim { \box_ht:N \l_@@_window_box }
+ }
+ \bool_if:NTF \l_@@_attach_equation_bool
+ {
+ \vbox_set:Nn \l_@@_window_box
+ {
+ \vbox_unpack_drop:N \l_@@_window_box
+ \box_set_to_last:N \l_@@_last_box
+ \@@_attach_equation:N \l_@@_last_box
+ \vbox_unpack_drop:N \l_@@_last_box
+ }
+ }
+ { \box_set_eq_drop:NN \l_@@_window_box \l_@@_body_box }
+ \dim_compare:nNnTF \g_@@_column_left_dim > \c_zero_dim
+ { \@@_build_hang_aux: }
+ { \bool_gset_false:N \g_@@_move_hang_bool }
+ }
+\cs_new_protected_nopar:Npn \@@_build_hang_aux:
+ {
+ \dim_set:Nn \l_@@_shift_dim
+ {
+ \dim_max:nn
+ { \box_ht:N \l_@@_window_box }
+ { \tex_baselineskip:D * \g_@@_line_int }
+ + \tex_parskip:D
+ }
+ \dim_gsub:Nn \g_@@_column_left_dim { \l_@@_shift_dim }
+ \dim_compare:nNnTF \g_@@_column_left_dim > \c_zero_dim
+ {
+ \box_if_empty:NTF \l_@@_bottom_box
+ { \bool_if:NT \g_@@_right_move_bool { \@@_set_next_hang: } }
+ { \bool_gset_false:N \g_@@_move_hang_bool }
+ }
+ { \bool_gset_false:N \g_@@_move_hang_bool }
+ }
+\cs_new_protected_nopar:Npn \@@_set_next_hang:
+ {
+ \bool_if:NF \g_@@_move_hang_bool
+ {
+ \bool_gset_true:N \g_@@_move_hang_bool
+ \dim_gset_eq:NN \g_@@_hang_ht_dim \g_@@_remaining_dim
+ }
+ \dim_gsub:Nn \g_@@_hang_ht_dim { \l_@@_shift_dim }
+ \dim_gset:Nn \g_@@_dp_dim { \box_dp:N \l_@@_window_box }
+ \@@_column_right_move_set:nn
+ { \g_@@_hang_ht_dim }
+ { \g_@@_column_left_dim }
+ \int_gzero:N \g_@@_window_int
+ }
+\dim_new:N \g_@@_hang_ht_dim
+\bool_new:N \g_@@_move_hang_bool
+% \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@@_build_hangfrom:}
+% \begin{macrocode}
+\cs_new_protected_nopar:Npn \@@_build_hangfrom:
+ {
+ \dim_compare:nNnTF \g_@@_prevdepth_dim > \c_@@_ignore_depth_dim
+ { \@@_build_hangfrom_aux: }
+ { \dim_gzero:N \g_@@_ht_dim }
+ }
+\cs_new_protected_nopar:Npn \@@_build_hangfrom_aux:
+ {
+ \group_begin:
+ \skip_zero:N \tex_splittopskip:D
+ \vbox_gset:Nn \g_@@_line_box
+ {
+ \tex_penalty:D \c_@@_break_int
+ \vbox_unpack:N \l_@@_body_box
+ }
+ \vbox_set_split_to_ht:NNn \l_@@_last_box \g_@@_line_box
+ { \c_zero_dim }
+ \dim_gset:Nn \g_@@_ht_dim
+ {
+ \g_@@_baseline_skip
+ - \g_@@_prevdepth_dim
+ - \l_@@_shift_dim
+ - \box_ht:N \l_@@_body_box
+ + \box_ht:N \g_@@_line_box
+ }
+ \group_end:
+ \box_set_eq_drop:NN \l_@@_body_box \g_@@_line_box
+ }
+% \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@@_put_box:}
+% \begin{macrocode}
+\cs_new_protected_nopar:Npn \@@_put_box:
+ {
+ \para_raw_end:
+ \dim_compare:nNnTF \g_@@_prevdepth_dim > \c_@@_ignore_depth_dim
+ { \@@_add_vskip: }
+ { \skip_gzero:N \g_@@_pre_skip }
+ \skip_set_eq:NN \l_@@_par_skip \tex_parskip:D
+ \skip_zero:N \tex_parskip:D
+ \bool_if:NTF \g_@@_right_move_bool
+ { \@@_put_box_aux: }
+ {
+ \box_if_empty:NTF \l_@@_bottom_box
+ {
+ \dim_compare:nNnTF
+ { \g_@@_remaining_dim }
+ >
+ { \box_ht_plus_dp:N \l_@@_window_box }
+ { \@@_set_next: }
+ { \@@_put_box_aux: }
+ }
+ { \@@_put_box_aux: }
+ }
+ }
+\skip_new:N \l_@@_par_skip
+\cs_new_protected_nopar:Npn \@@_put_box_aux:
+ {
+ \int_gzero:N \g_@@_window_int
+ \@@_hbox:n
+ {
+ \@@_put_window_box:
+ \bool_if:NF \g_@@_next_bool
+ { \@@_put_stuff_box: }
+ }
+ \box_if_empty:NTF \l_@@_bottom_box
+ { \@@_put_trailer_box: }
+ { \@@_put_bottom_box: }
+ }
+\cs_new_protected_nopar:Npn \@@_put_trailer_box:
+ {
+ \bool_if:NTF \g_@@_next_hang_bool
+ {
+ \@@_next_hang_para:
+ \@@_next_para_trailer:
+ }
+ {
+ \bool_if:NTF \g_@@_right_move_bool
+ { \@@_next_para_trailer: }
+ {
+ \@@_add_pos_skip:
+ \box_if_empty:NF \g_@@_pos_box
+ {
+ \@@_newline:
+ \hbox_unpack_drop:N \g_@@_pos_box
+ }
+ }
+ }
+ }
+\cs_new_protected_nopar:Npn \@@_put_bottom_box:
+ {
+ \@@_newline:
+ \hbox_unpack_drop:N \l_@@_bottom_box
+ \box_if_empty:NF \g_@@_equation_box
+ { \@@_insert_equation: }
+ \box_if_empty:NF \g_@@_pos_box
+ { \hbox_unpack_drop:N \g_@@_pos_box }
+ \bool_gset_false:N \g_@@_right_move_bool
+ \bool_gset_false:N \g_@@_first_save_bool
+ }
+\cs_new_protected_nopar:Npn \@@_newline:
+ {
+ \tex_penalty:D \c_@@_nobreak_int
+ \tex_hfil:D
+ \tex_penalty:D \c_@@_break_int
+ }
+\cs_new_protected:Npn \@@_hbox:n #1
+ {
+ \para_raw_noindent:
+ \hbox_gset:Nn \g_@@_last_box {#1}
+ \box_gset_wd:Nn \g_@@_last_box { \l_@@_line_dim }
+ \box_use_drop:N \g_@@_last_box
+ }
+\cs_new_protected_nopar:Npn \@@_put_window_box:
+ {
+ \dim_compare:nNnF \l_@@_l_dim > \c_zero_dim
+ { \skip_horizontal:n { \l_@@_line_dim - \l_@@_r_dim } }
+ \box_use:N \l_@@_window_box
+ }
+\cs_new_protected_nopar:Npn \@@_put_stuff_box:
+ {
+ \@@_move_stuff_box:nn { up }
+ {
+ \l_@@_voffset_dim
+ + ( \box_dp:N \g_@@_stuff_box -
+ \box_dp:N \l_@@_window_box )
+ + ( \box_ht_plus_dp:N \l_@@_window_box -
+ \g_@@_stuff_ht_dim ) / 2
+ \box_if_empty:NT \l_@@_bottom_box
+ { - \g_@@_pos_skip / 2 }
+ }
+ \@@_output_stuff_box:
+ }
+\cs_new_protected_nopar:Npn \@@_output_stuff_box:
+ {
+ \skip_horizontal:n
+ {
+ \dim_compare:nNnTF \l_@@_r_dim > \c_zero_dim
+ {
+ \dim_compare:nNnTF
+ { \box_wd:N \l_@@_window_box }
+ <
+ { \l_@@_window_dim }
+ { \l_@@_leftsep_dim }
+ {
+ - \l_@@_r_dim
+ - \l_@@_rightsep_dim
+ - \g_@@_stuff_wd_dim
+ }
+ }
+ { \l_@@_leftsep_dim }
+ }
+ \box_use_drop:N \g_@@_stuff_box
+ }
+% \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@@_move_stuff_box:n}
+% \begin{macrocode}
+\cs_new_protected:Npn \@@_move_stuff_box:nn #1#2
+ {
+ \hbox_gset:Nn \g_@@_stuff_box
+ {
+ \@@_parshape_kern:
+ \use:c { box_move_ #1 :nn }
+ {#2}
+ { \box_use_drop:N \g_@@_stuff_box }
+ }
+ \box_gset_ht:Nn \g_@@_stuff_box { \c_zero_dim }
+ \box_gset_dp:Nn \g_@@_stuff_box { \c_zero_dim }
+ }
+% \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@@_add_vskip:}
+% \begin{macrocode}
+\cs_new_protected_nopar:Npn \@@_add_vskip:
+ {
+ \box_if_empty:NTF \g_@@_display_box
+ { \@@_add_vskip_auxi: }
+ { \@@_add_vskip_display: }
+ }
+\cs_new_protected_nopar:Npn \@@_add_vskip_display:
+ {
+ \vbox_unpack_drop:N \g_@@_display_box
+ \@@_ignore_depth:
+ }
+\cs_new_protected_nopar:Npn \@@_add_vskip_auxi:
+ {
+ \dim_compare:nNnTF \tex_pagegoal:D < \c_max_dim
+ { \@@_add_vskip_auxii: }
+ { \@@_add_vskip_auxiii: }
+ }
+\cs_new_protected_nopar:Npn \@@_add_vskip_auxii:
+ {
+ \skip_gset:Nn \g_@@_pre_skip
+ {
+ \g_@@_baseline_skip
+ - \g_@@_prevdepth_dim
+ - \g_@@_ht_dim
+ }
+ \dim_compare:nNnT \g_@@_pre_skip < \tex_lineskiplimit:D
+ { \skip_gset_eq:NN \g_@@_pre_skip \tex_lineskip:D }
+ \bool_if:NTF \l_@@_first_move_bool
+ { \@@_first_move_skip: }
+ { \skip_vertical:N \g_@@_pre_skip }
+ \@@_ignore_depth:
+ }
+\cs_new_protected_nopar:Npn \@@_add_vskip_auxiii:
+ {
+ \dim_compare:nNnTF \tex_topskip:D > \g_@@_ht_dim
+ {
+ \tex_hrule:D height \c_zero_dim \scan_stop:
+ \skip_gset:Nn \g_@@_pre_skip
+ { \tex_topskip:D - \g_@@_ht_dim }
+ \skip_vertical:n { \g_@@_pre_skip - \tex_topskip:D }
+ }
+ { \skip_gzero:N \g_@@_pre_skip }
+ }
+\cs_new_protected_nopar:Npn \@@_first_move_skip:
+ {
+ \skip_vertical:n
+ {
+ \g_@@_first_sep_dim
+ - \g_@@_window_ht_dim
+ - \tex_parskip:D
+ \dim_compare:nNnT \g_@@_column_right_ht_dim > \c_zero_dim
+ { + \g_@@_column_right_ht_dim + \g_@@_pre_skip }
+ }
+ }
+\skip_new:N \g_@@_pre_skip
+% \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@@_ignore_depth:,\@@_set_prevdepth:N}
+% \begin{macrocode}
+\cs_new_protected_nopar:Npn \@@_ignore_depth:
+ { \dim_set_eq:NN \tex_prevdepth:D \c_@@_ignore_depth_dim }
+\cs_new_protected_nopar:Npn \@@_set_prevdepth:N
+ { \dim_set_eq:NN \tex_prevdepth:D }
+\dim_const:Nn \c_@@_ignore_depth_dim { -1000pt }
+% \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@@_set_next:}
+% \begin{macrocode}
+\cs_new_protected_nopar:Npn \@@_set_next:
+ {
+ \dim_set:Nn \l_@@_height_dim
+ {
+ \g_@@_pre_skip
+ + \g_@@_pos_skip
+ + \box_ht_plus_dp:N \l_@@_window_box
+ }
+ \dim_gadd:Nn \g_@@_total_ht_dim { \l_@@_height_dim }
+ \dim_set:Nn \l_@@_shift_dim
+ { \g_@@_remaining_dim - \l_@@_height_dim }
+ \dim_compare:nNnTF \l_@@_shift_dim > \c_zero_dim
+ { \@@_set_next_auxi: }
+ {
+ \dim_compare:nNnTF
+ { - \l_@@_shift_dim } > \l_@@_min_dim
+ { \@@_set_next_auxii: }
+ { \@@_set_next_auxi: }
+ }
+ }
+\dim_new:N \g_@@_total_ht_dim
+\cs_new_protected_nopar:Npn \@@_set_next_auxi:
+ {
+ \int_gset:Nn \g_@@_window_int
+ {
+ \dim_compare:nNnTF \l_@@_shift_dim > \c_zero_dim
+ { \@@_unit:n { \l_@@_shift_dim } }
+ { \c_one_int }
+ }
+ \@@_set_next_verify:
+ \bool_if:NF \g_@@_next_bool
+ { \@@_move_next_stuff_box: }
+ \@@_set_next_output:
+ \@@_make_next_stuff:nn
+ { \g_@@_stuff_wd_dim }
+ { \l_@@_shift_dim }
+ \int_gzero:N \g_@@_top_int
+ \@@_next_para_trailer:
+ }
+\cs_new_protected_nopar:Npn \@@_move_next_stuff_box:
+ {
+ \@@_move_stuff_box:nn { down }
+ {
+ \box_ht:N \g_@@_stuff_box
+ - \box_ht:N \l_@@_window_box
+ + ( \g_@@_window_ht_dim
+ - \g_@@_stuff_ht_dim
+ - \g_@@_pre_skip
+ + \g_@@_pos_skip
+ + \l_@@_par_skip ) / 2
+ - \l_@@_voffset_dim
+ }
+ }
+\cs_new_protected_nopar:Npn \@@_set_next_auxii:
+ {
+ \int_gzero:N \g_@@_window_int
+ \bool_if:NF \g_@@_next_bool
+ {
+ \@@_move_stuff_box:nn { down }
+ {
+ \box_ht:N \g_@@_stuff_box
+ - \box_ht:N \l_@@_window_box
+ - \l_@@_voffset_dim
+ }
+ }
+ \@@_set_next_output:
+ \@@_add_pos_skip:
+ }
+\cs_new_protected_nopar:Npn \@@_set_next_output:
+ {
+ \@@_hbox:n
+ {
+ \@@_put_window_box:
+ \bool_if:NF \g_@@_next_bool
+ { \@@_output_stuff_box: }
+ }
+ }
+\cs_new_protected_nopar:Npn \@@_set_next_verify:
+ {
+ \dim_set:Nn \l_@@_height_dim
+ { \g_@@_window_ht_dim - \g_@@_total_ht_dim }
+ \dim_until_do:nNnn
+ { \tex_baselineskip:D * \g_@@_window_int + \l_@@_par_skip }
+ >
+ { \l_@@_height_dim }
+ { \int_gincr:N \g_@@_window_int }
+ \dim_gadd:Nn \g_@@_total_ht_dim
+ { \tex_baselineskip:D * \g_@@_window_int + \l_@@_par_skip }
+ }
+% \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@@_next_para_trailer:}
+% \begin{macrocode}
+\cs_new_protected_nopar:Npn \@@_next_para_trailer:
+ {
+ \@@_add_pos_skip:
+ \box_if_empty:NTF \g_@@_pos_box
+ { \@@_next_para: }
+ {
+ \@@_env_begin:
+ \hbox_unpack_drop:N \g_@@_pos_box
+ \@@_env_end:
+ }
+ }
+% \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@@_make_next_stuff:nn}
+% \begin{macrocode}
+\cs_new_protected:Npn \@@_make_next_stuff:nn #1#2
+ {
+ \bool_gset_true:N \g_@@_next_bool
+ \dim_gset:Nn \g_@@_stuff_wd_dim {#1}
+ \dim_gset:Nn \g_@@_remaining_dim {#2}
+ }
+\bool_new:N \g_@@_next_bool
+% \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@@_extract_hbox:NN}
+% \begin{macrocode}
+\cs_new_protected:Npn \@@_extract_display_hbox:NN #1
+ {
+ \box_gclear:N \g_@@_pos_box
+ \vbox_set:Nn #1
+ {
+ \vbox_unpack_drop:N #1
+ \bool_if:NTF \g_@@_display_bool
+ { \@@_test_display_math: }
+ { \box_gclear:N \g_@@_display_box }
+ \box_if_empty:NTF \g_@@_display_box
+ {
+ \bool_gset_false:N \g_@@_amsmath_bool
+ \@@_extract_last_hbox:N \g_@@_last_box
+ }
+ { \box_gclear:N \g_@@_last_box }
+ }
+ \box_if_empty:NF \g_@@_display_box
+ { \dim_gset:Nn \g_@@_display_pre_dim { \box_dp:N #1 } }
+ \@@_extract_hbox_aux:N
+ }
+\cs_new_protected:Npn \@@_extract_hbox:NN #1
+ {
+ \vbox_set:Nn #1
+ {
+ \vbox_unpack_drop:N #1
+ \@@_extract_last_hbox:N \g_@@_last_box
+ }
+ \@@_extract_hbox_aux:N
+ }
+\cs_new_protected:Npn \@@_extract_hbox_aux:N #1
+ {
+ \box_if_empty:NTF \g_@@_last_box
+ { \box_clear:N #1 }
+ { \@@_repack_hbox:N #1 }
+ }
+\cs_new_protected:Npn \@@_repack_hbox:N #1
+ {
+ \hbox_set:Nn #1
+ {
+ \skip_if_eq:nnF
+ { \g_@@_main_left_skip } { \c_zero_skip }
+ { \skip_horizontal:N \g_@@_main_left_skip }
+ \hbox_unpack_drop:N \g_@@_last_box
+ \tex_unskip:D \tex_unskip:D \tex_unpenalty:D
+ }
+ }
+\cs_new_protected:Npn \@@_extract_last_hbox:N #1
+ {
+ \@@_if_last_hlist:TF
+ {
+ \box_gset_to_last:N #1
+ \tex_unskip:D
+ }
+ { \box_gclear:N #1 }
+ }
+\box_new:N \g_@@_last_box
+\box_new:N \g_@@_display_box
+\dim_new:N \g_@@_display_pre_dim
+% \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@@_test_display_math:}
+% \begin{macrocode}
+\cs_new_protected_nopar:Npn \@@_test_display_math:
+ {
+ \@@_if_last_hlist:T
+ {
+ \box_gset_to_last:N \g_@@_pos_box
+ \tex_unskip:D
+ }
+ \box_clear:N \l_@@_add_box
+ \box_gclear:N \g_@@_display_box
+ \skip_gzero:N \g_@@_last_skip
+ \skip_gzero:N \g_@@_display_pre_skip
+ \bool_gset_false:N \g_@@_amsmath_bool
+ \@@_add_last_skip:w
+ \@@_add_last_penalty:w
+ \@@_add_last_box:w
+ \@@_add_last_skip:w
+ \@@_add_last_skip:w
+ \@@_add_last_penalty:w
+ \@@_add_last_finalise:w \q_stop
+ }
+\box_new:N \l_@@_add_box
+\box_new:N \g_@@_pos_box
+% \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@@_add_last_stop:w}
+% \begin{macrocode}
+\cs_new_protected_nopar:Npn \@@_add_last_stop:w
+ {
+ \vbox_unpack_drop:N \l_@@_add_box
+ \use_none_delimit_by_q_stop:w
+ }
+% \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@@_add_last_skip:w}
+% \begin{macrocode}
+\cs_new_protected_nopar:Npn \@@_add_last_skip:w
+ {
+ \@@_if_last_glue:TF
+ {
+ \skip_set_eq:NN \l_@@_last_skip \tex_lastskip:D
+ \vbox_set:Nn \l_@@_add_box
+ {
+ \skip_vertical:N \l_@@_last_skip
+ \vbox_unpack_drop:N \l_@@_add_box
+ }
+ \tex_unskip:D
+ \skip_gadd:Nn \g_@@_last_skip { \l_@@_last_skip }
+ }
+ { \@@_skip_stop:w }
+ }
+\skip_new:N \l_@@_last_skip
+\skip_new:N \g_@@_last_skip
+\cs_new_eq:NN \@@_skip_stop:w \@@_add_last_stop:w
+% \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@@_add_last_penalty:w}
+% \begin{macrocode}
+\cs_new_protected_nopar:Npn \@@_add_last_penalty:w
+ {
+ \@@_if_last_penalty:TF
+ {
+ \int_set_eq:NN \l_@@_last_int \tex_lastpenalty:D
+ \vbox_set:Nn \l_@@_add_box
+ {
+ \tex_penalty:D \l_@@_last_int
+ \vbox_unpack_drop:N \l_@@_add_box
+ }
+ \tex_unpenalty:D
+ \skip_gset_eq:NN \g_@@_pre_skip \g_@@_last_skip
+ \skip_gzero:N \g_@@_last_skip
+ }
+ { \@@_penalty_stop:w }
+ }
+\int_new:N \l_@@_last_int
+\cs_new_eq:NN \@@_penalty_stop:w \@@_add_last_stop:w
+% \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@@_add_last_box:w}
+% \begin{macrocode}
+\cs_new_protected_nopar:Npn \@@_add_last_box:w
+ {
+ \@@_if_last_hlist:TF
+ {
+ \skip_gzero:N \g_@@_last_skip
+ \box_set_to_last:N \l_@@_last_box
+ \vbox_set:Nn \l_@@_add_box
+ {
+ \box_use_drop:N \l_@@_last_box
+ \vbox_unpack_drop:N \l_@@_add_box
+ }
+ }
+ { \@@_box_stop:w }
+ }
+\box_new:N \l_@@_last_box
+\cs_new_eq:NN \@@_box_stop:w \@@_add_last_stop:w
+% \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@@_add_last_finalise:w}
+% \begin{macrocode}
+\cs_new_protected_nopar:Npn \@@_add_last_finalise:w
+ {
+ \int_gset_eq:NN \g_@@_display_pre_int \l_@@_last_int
+ \skip_gadd:Nn \g_@@_display_pre_skip { \g_@@_pre_skip }
+ \int_case:nnTF { \tex_lastnodetype:D }
+ {
+ { \c_@@_hlist_node } { }
+ { \c_@@_none_node } { }
+ { \c_@@_whatsit_node } { }
+ }
+ { \box_gset_eq_drop:NN \g_@@_display_box \l_@@_add_box }
+ { \vbox_unpack_drop:N \l_@@_add_box }
+ \use_none_delimit_by_q_stop:w
+ }
+\int_new:N \g_@@_display_pre_int
+\skip_new:N \g_@@_display_pre_skip
+% \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@@_amsmath_boot:w,\@@_amsmath_recursion:w,\@@_amsmath_multline:w}
+% \pkg{amsmath} 的 \env{align} 等数学环境内部是一个 \tn{halign} 环境，结构不一样，需要另外处理。
+% \begin{macrocode}
+\cs_new_protected_nopar:Npn \@@_amsmath_boot:w
+ {
+ \@@_add_last_skip:w
+ \@@_add_last_penalty:w
+ \cs_set_eq:NN \@@_box_stop:w \@@_add_last_stop:w
+ \@@_add_last_box:w
+ \bool_gset_true:N \g_@@_amsmath_bool
+ \cs_set_eq:NN \@@_skip_stop:w \@@_amsmath_multline:w
+ \cs_set_eq:NN \@@_penalty_stop:w \@@_amsmath_stop:NN
+ \@@_amsmath_recursion:w
+ }
+\cs_new_protected_nopar:Npn \@@_amsmath_recursion:w
+ {
+ \@@_add_last_skip:w
+ \@@_add_last_skip:w
+ \@@_add_last_penalty:w
+ \@@_add_last_box:w
+ \@@_amsmath_recursion:w
+ }
+\cs_new_protected:Npn \@@_amsmath_stop:NN #1#2
+ {
+ \cs_set_eq:NN \@@_skip_stop:w \@@_add_last_stop:w
+ \cs_set_eq:NN \@@_penalty_stop:w \@@_add_last_stop:w
+ }
+\bool_new:N \g_@@_amsmath_bool
+% \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@@_amsmath_multline:w}
+% \env{multline} 环境的结构与其他环境不一样。\pkg{amsmath} 的 \tn{@display at init} 定义为
+% \begin{verbatim}
+% \def\@display at init#1{%
+% \global\dt at ptrue \spread at equation
+% \everycr{%
+% \noalign{%
+% #1%
+% \ifdt at p
+% \global\dt at pfalse
+% \vskip-\lineskiplimit
+% \vskip\normallineskiplimit
+% \else
+% \penalty\@eqpen \global\dspbrk at lvl\m at ne
+% \fi
+% }%
+% }%
+% }
+% \end{verbatim}
+% \env{align} 等环境的开头 \tn{ifdt at p} 为真，会插入两个 \tn{vskip}，
+% 但是 \env{multline} 定义中的 \tn{mmeasure@} 没有重定义 \tn{everycr}，
+% 上述定义中的 \tn{dt at pfalse} 被执行，导致环境开头被加入了 \tn{penalty}，
+% 不确定是有意为之还是疏忽。
+% \begin{macrocode}
+\cs_new_protected_nopar:Npn \@@_amsmath_multline:w
+ {
+ \@@_amsmath_stop:NN ? ?
+ \@@_add_last_penalty:w
+ \skip_gset_eq:NN \g_@@_display_pre_skip
+ \g_@@_pre_skip
+ \@@_add_last_skip:w
+ \@@_add_last_penalty:w
+ \@@_add_last_finalise:w
+ }
+% \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@@_amsmath_leqno:}
+% \pkg{amsmath} 的 \opt{leqno} 是直接用 \cs{tex_leqno:D} 实现的，与 \LaTeX\ 的实现不一样。
+% \begin{macrocode}
+\cs_new_protected_nopar:Npn \@@_amsmath_leqno:
+ {
+ \legacy_if:nTF { tagsleft@ }
+ { \bool_gset_true:N \g_@@_leqno_bool }
+ { \bool_gset_false:N \g_@@_leqno_bool }
+ }
+% \end{macrocode}
+% \end{macro}
+%
+% \begin{macrocode}
+\@@_package_hook:nn { amsmath }
+ {
+ \cs_gset_eq:NN \@@_box_stop:w
+ \@@_amsmath_boot:w
+ \cs_gset_eq:NN \@@_test_leqno:
+ \@@_amsmath_leqno:
+ }
+% \end{macrocode}
+%
+% \begin{macro}{\@@_set_float:}
+% \begin{macrocode}
+\cs_new_protected_nopar:Npn \@@_set_float:
+ {
+ \cs_set_eq:NN \@captype \l_@@_type_tl
+ \@@_float_pre_hook:
+ \@@_caption_hook:
+ \@floatboxreset
+ }
+% \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@@_float_pre_hook:, \@@_float_pos_hook:}
+% \begin{macrocode}
+\cs_new_eq:NN \@@_float_pre_hook: \@@_empty:
+\cs_new_eq:NN \@@_float_pos_hook: \@@_empty:
+\@@_package_hook:nn { float }
+ {
+ \bool_new:N \g_@@_float_pos_bool
+ \cs_gset_protected_nopar:Npn \@@_float_pre_hook:
+ { \exp_args:No \@@_float_pre_aux:n { \l_@@_type_tl } }
+ \cs_new_protected:Npn \@@_float_pre_aux:n #1
+ {
+ \cs_if_exist_use:cTF { fst@ #1 }
+ {
+ \@float at setevery {#1}
+ \bool_gset_true:N \g_@@_float_pos_bool
+ }
+ { \bool_gset_false:N \g_@@_float_pos_bool }
+ }
+ \cs_gset_protected_nopar:Npn \@@_float_pos_hook:
+ {
+ \bool_if:NT \g_@@_float_pos_bool
+ { \exp_args:No \@@_float_pos_aux:n { \l_@@_type_tl } }
+ }
+ \cs_new_protected:Npn \@@_float_pos_aux:n #1
+ {
+ \hbox_gset:Nn \g_@@_stuff_box
+ {
+ \use:c { fst@ #1 }
+ \cs_set_eq:NN \@currbox \g_@@_stuff_box
+ \vbox_gset:Nn \g_@@_stuff_box
+ { \box_use_drop:N \g_@@_stuff_box }
+ \exp_args:Ne \float at makebox
+ { \dim_eval:n { \box_wd:N \g_@@_stuff_box } }
+ }
+ }
+ }
+% \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@@_floatrow_hook:}
+% \begin{macrocode}
+\cs_new_eq:NN \@@_floatrow_hook: \@@_empty:
+\@@_package_hook:nn { floatrow }
+ {
+ \cs_gset_protected_nopar:Npn \@@_floatrow_hook:
+ {
+ \cs_set_eq:NN \@captype \l_@@_type_tl
+ \killfloatstyle
+ \FR at redefs
+ \dim_zero:N \FBc at wd
+ \exp_args:Ne \flrow at setlist
+ {
+ { \l_@@_type_tl }
+ { wrapfloat }
+ { wrap \l_@@_type_tl }
+ }
+ \FRifFBOX \@@@@setframe \relax \@@@@FStrue
+ \hbox_gset:Nw \g_@@_stuff_box
+ \tl_set:Nx \FBB at wd { \dim_use:N \l_@@_width_dim }
+ \FB at fs@wd
+ \dim_set:Nn \l_@@_width_dim { \FBo at wd }
+ }
+ \cs_gset_protected_nopar:Npn \@@_float_pre_hook:
+ { \the \FR at everyfloat }
+ \cs_gset_protected_nopar:Npn \@@_float_pos_hook:
+ {
+ \legacy_if:nTF { FBbuild }
+ {
+ \cs_set_eq:NN \@currbox \g_@@_stuff_box
+ \vbox_gset:Nn \g_@@_stuff_box
+ { \box_use_drop:N \g_@@_stuff_box }
+ \flrow at FB { \l_@@_width_dim }
+ }
+ {
+ \cs_undefine:N \flrow at typ@tmpset
+ \box_use_drop:N \g_@@_stuff_box
+ }
+ \hbox_gset_end:
+ }
+ }
+% \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@@_caption_hook:}
+% \begin{macrocode}
+\cs_new_eq:NN \@@_caption_hook: \@@_empty:
+\@@_package_hook:nn { caption }
+ {
+ \cs_gset_protected_nopar:Npn \@@_caption_hook:
+ { \exp_args:No \@@_caption_aux:n { \l_@@_type_tl } }
+ \cs_new_protected:Npn \@@_caption_aux:n #1
+ {
+ \caption at settype {#1}
+ \caption at clearmargin
+ \caption at setoptions { wrap #1 }
+ }
+ }
+% \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{top}
+% \begin{macrocode}
+\keys_define:nn { wrapstuff }
+ {
+ abovesep .tl_set:N = \l_@@_abovesep_tl ,
+ belowsep .tl_set:N = \l_@@_belowsep_tl ,
+ leftsep .tl_set:N = \l_@@_leftsep_tl ,
+ rightsep .tl_set:N = \l_@@_rightsep_tl ,
+ linewidth .tl_set:N = \l_@@_linewidth_tl ,
+ lines .tl_set:N = \l_@@_lines_tl ,
+ width .tl_set:N = \l_@@_width_tl ,
+ height .tl_set:N = \l_@@_height_tl ,
+ hoffset .tl_set:N = \l_@@_hoffset_tl ,
+ voffset .tl_set:N = \l_@@_voffset_tl ,
+ type .tl_set:N = \l_@@_type_tl ,
+ ratio .fp_set:N = \l_@@_ratio_fp ,
+ top .int_set:N = \l_@@_top_int ,
+ i .code:n = \@@_swap_true:N \c_true_bool ,
+ o .code:n = \@@_swap_true:N \c_false_bool ,
+ l .code:n = \@@_swap_false:N \c_zero_fp ,
+ r .code:n = \@@_swap_false:N \c_one_fp ,
+ c .code:n = \@@_swap_false:N \c_@@_c_fp ,
+ column .choice: ,
+ column/true .code:n =
+ {
+ \bool_set_true:N \l_@@_column_bool
+ \cs_set_eq:NN \@@_build_column:
+ \@@_build_column_strict:
+ } ,
+ column/par .code:n =
+ {
+ \bool_set_true:N \l_@@_column_bool
+ \cs_set_eq:NN \@@_build_column:
+ \@@_build_column_fuzzy:
+ } ,
+ column/false .code:n =
+ { \bool_set_false:N \l_@@_column_bool } ,
+ hsep .code:n =
+ {
+ \tl_set:Nn \l_@@_leftsep_tl {#1}
+ \tl_set_eq:NN \l_@@_rightsep_tl
+ \l_@@_leftsep_tl
+ } ,
+ vsep .code:n =
+ {
+ \tl_set:Nn \l_@@_abovesep_tl {#1}
+ \tl_set_eq:NN \l_@@_belowsep_tl
+ \l_@@_abovesep_tl
+ } ,
+ unknown .code:n =
+ { \exp_args:No \@@_unknown_key:n { \l_keys_key_str } } ,
+ leftsep .groups:n = main ,
+ rightsep .groups:n = main ,
+ hsep .groups:n = main ,
+ linewidth .groups:n = main ,
+ lines .groups:n = main ,
+ column .groups:n = main ,
+ hoffset .groups:n = main ,
+ voffset .groups:n = main ,
+ top .groups:n = stuff ,
+ abovesep .groups:n = stuff ,
+ belowsep .groups:n = stuff ,
+ vsep .groups:n = stuff ,
+ width .groups:n = stuff ,
+ height .groups:n = stuff ,
+ float .groups:n = stuff ,
+ ratio .groups:n = ratio ,
+ l .groups:n = ratio ,
+ r .groups:n = ratio ,
+ c .groups:n = ratio ,
+ i .groups:n = ratio ,
+ o .groups:n = ratio ,
+ column .default:n = true ,
+ column .initial:n = true ,
+ abovesep .initial:n = \c_zero_dim ,
+ belowsep .initial:n = \c_zero_dim ,
+ leftsep .initial:n = 1em ,
+ rightsep .initial:n = 1em ,
+ linewidth .initial:n = \linewidth ,
+ hoffset .initial:n = \c_zero_dim ,
+ voffset .initial:n = \c_zero_dim ,
+ width .initial:n = \c_zero_dim ,
+ height .initial:n = \c_zero_dim ,
+ ratio .initial:n = \c_one_fp ,
+ abovesep .value_required:n = true ,
+ belowsep .value_required:n = true ,
+ leftsep .value_required:n = true ,
+ rightsep .value_required:n = true ,
+ linewidth .value_required:n = true ,
+ width .value_required:n = true ,
+ height .value_required:n = true ,
+ hoffset .value_required:n = true ,
+ voffset .value_required:n = true ,
+ hsep .value_required:n = true ,
+ vsep .value_required:n = true ,
+ l .value_forbidden:n = true ,
+ r .value_forbidden:n = true ,
+ c .value_forbidden:n = true ,
+ i .value_forbidden:n = true ,
+ o .value_forbidden:n = true
+ }
+\fp_const:Nn \c_@@_c_fp { 0.5 }
+\cs_new_protected:Npn \@@_swap_true:N #1
+ {
+ \bool_set_true:N \l_@@_swap_bool
+ \bool_set_eq:NN \l_@@_inner_bool #1
+ \bool_if:NTF \l_@@_inner_bool
+ { \bool_set_false:N \l_@@_outer_bool }
+ { \bool_set_true:N \l_@@_outer_bool }
+ }
+\cs_new_protected_nopar:Npn \@@_swap_false:N
+ {
+ \bool_set_false:N \l_@@_swap_bool
+ \fp_set_eq:NN \l_@@_ratio_fp
+ }
+\cs_new_protected:Npn \@@_unknown_key:n #1
+ {
+ \regex_match:NnTF \c_@@_integer_regex {#1}
+ { \int_set:Nn \l_@@_top_int }
+ { \@@_unknown_key_error:n }
+ {#1}
+ }
+\regex_const:Nn \c_@@_integer_regex { \A \d+ \Z }
+\cs_new_protected_nopar:Npn \@@_unknown_key_error:n
+ { \msg_error:nnn { wrapstuff } { unknown-key } }
+\msg_new:nnnn { wrapstuff } { unknown-key }
+ { The~key~'#1'~is~unknown~and~is~being~ignored. }
+ {
+ The~package~wrapstuff~does~not~have~a~key~called~'#1'.\\
+ Check~that~you~have~spelled~the~key~name~correctly.
+ }
+% \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\wrapstuffset}
+% \begin{macrocode}
+\NewDocumentCommand \wrapstuffset { m }
+ { \keys_set:nn { wrapstuff } {#1} }
+% \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\wrapstuffclear}
+% 保险起见，加入 \tn{par} 结束段落，同时结束 \env{wrapstuff at par} 环境。
+% \begin{macrocode}
+\NewDocumentCommand \wrapstuffclear { }
+ {
+ \par
+ \@@_clear:
+ }
+% \end{macrocode}
+% \end{macro}
+%
+% \begin{macrocode}
+\cs_if_exist:NTF \ProcessKeyOptions
+ { \ProcessKeyOptions [ wrapstuff ] }
+ {
+ \RequirePackage { l3keys2e }
+ \ProcessKeysOptions { wrapstuff }
+ }
+% \end{macrocode}
+%
+% \begin{macrocode}
+%</package>
+% \end{macrocode}
+%
+% \end{implementation}
+%
+% \Finale
+%
+\endinput
Property changes on: trunk/Master/texmf-dist/source/latex/wrapstuff/wrapstuff.dtx
___________________________________________________________________
Added: svn:eol-style
## -0,0 +1 ##
+native
\ No newline at end of property
Added: trunk/Master/texmf-dist/tex/latex/wrapstuff/wrapstuff.sty
===================================================================
--- trunk/Master/texmf-dist/tex/latex/wrapstuff/wrapstuff.sty (rev 0)
+++ trunk/Master/texmf-dist/tex/latex/wrapstuff/wrapstuff.sty 2022-07-20 20:26:32 UTC (rev 63949)
@@ -0,0 +1,2323 @@
+%%
+%% This is file `wrapstuff.sty',
+%% generated with the docstrip utility.
+%%
+%% The original source files were:
+%%
+%% wrapstuff.dtx (with options: `package')
+%%
+%% Copyright (C) 2022 by Qing Lee <sobenlee at gmail.com>
+%% -----------------------------------------------------------------
+%%
+%% This work may be distributed and/or modified under the
+%% conditions of the LaTeX Project Public License, either
+%% version 1.3c of this license or (at your option) any later
+%% version. This version of this license is in
+%% http://www.latex-project.org/lppl/lppl-1-3c.txt
+%% and the latest version of this license is in
+%% http://www.latex-project.org/lppl.txt
+%% and version 1.3 or later is part of all distributions of
+%% LaTeX version 2005/12/01 or later.
+%%
+%% This work has the LPPL maintenance status "maintained".
+%%
+%% The Current Maintainer of this work is Qing Lee.
+%%
+%% -----------------------------------------------------------------
+%%
+\NeedsTeXFormat{LaTeX2e}
+\@ifundefined{ExplLoaderFileDate}{\RequirePackage{expl3}}{}
+\GetIdInfo$Id: wrapstuff.dtx 564fe9d 2022-07-20 19:55:58 +0800 Qing Lee <sobenlee at gmail.com> $
+ {Wrapping text around stuff}
+\ProvidesExplPackage{\ExplFileName}
+ {\ExplFileDate}{0.1}{\ExplFileDescription}
+\@ifl at t@r \fmtversion { 2021-06-01 }
+ { }
+ {
+ \msg_new:nnn { wrapstuff } { latex-too-old }
+ {
+ You~need~to~update~your~LaTeX~to~the~latest~release. \\
+ Loading~wrapstuff~will~abort!
+ }
+ \msg_critical:nn { wrapstuff } { latex-too-old }
+ }
+\@ifl at t@r \ExplLoaderFileDate { 2022-04-10 }
+ { }
+ {
+ \msg_new:nnn { wrapstuff } { latex3-too-old }
+ {
+ You~need~to~update~your~installation~of~the~bundles~
+ "l3kernel"~and~"l3packages". \\
+ Loading~wrapstuff~will~abort!
+ }
+ \msg_critical:nn { wrapstuff } { latex3-too-old }
+ }
+\prop_gput:Nnn \g_msg_module_name_prop { wstf } { wrapstuff }
+\group_begin:
+\cs_set:Npn \__wstf_tmp:nn #1
+ {
+ \group_begin:
+ \exp_args:Ncc \__wstf_tmp_aux:NNn
+ { __wstf_if_last_ #1 : }
+ { c__wstf_ #1 _node }
+ }
+\cs_set:Npn \__wstf_tmp_aux:NNn #1#2#3
+ {
+ \group_end:
+ \int_const:Nn #2 {#3}
+ \prg_new_conditional:Npnn #1 { T , F , TF }
+ {
+ \if_int_compare:w \tex_lastnodetype:D = #2
+ \prg_return_true: \else: \prg_return_false: \fi:
+ }
+ }
+\__wstf_tmp:nn { none } { -1 }
+\__wstf_tmp:nn { hlist } { 1 }
+\__wstf_tmp:nn { whatsit } { 9 }
+\__wstf_tmp:nn { glue } { 11 }
+\__wstf_tmp:nn { kern } { 12 }
+\__wstf_tmp:nn { penalty } { 13 }
+\group_end:
+\cs_new_protected:Npn \__wstf_gadd_hook:nn #1
+ { \hook_gput_code:nnn {#1} { wrapstuff } }
+\cs_new_protected:Npn \__wstf_package_hook:nn #1
+ { \hook_gput_code:nnn { package/#1/after } { wrapstuff } }
+\NewDocumentEnvironment { wrapstuff } { O { } }
+ {
+ \__wstf_clear:
+ \int_set:Nn \l__wstf_top_int { -1 }
+ \tl_if_blank:nTF {#1}
+ { \tl_clear:N \l__wstf_main_kv_tl }
+ {
+ \keys_set_filter:nnnN { wrapstuff }
+ { main , ratio }
+ {#1} \l__wstf_main_kv_tl
+ }
+ \tl_set:Nx \l__wstf_type_tl { \l__wstf_type_tl }
+ \dim_set:Nn \l__wstf_width_dim { \l__wstf_width_tl }
+ \dim_set:Nn \l__wstf_height_dim { \l__wstf_height_tl }
+ \hbox_gset:Nw \g__wstf_stuff_box
+ \dim_compare:nNnTF \l__wstf_width_dim > \c_zero_dim
+ { \__wstf_minipage_begin: }
+ { \__wstf_hbox_begin: }
+ }
+ {
+ \dim_compare:nNnTF \l__wstf_width_dim > \c_zero_dim
+ { \__wstf_minipage_end: }
+ { \__wstf_hbox_end: }
+ \__wstf_set_vsep:
+ \__wstf_attach_label:
+ \tl_if_empty:NTF \l__wstf_main_kv_tl
+ { \tl_gclear:N \g__wstf_main_setting_tl }
+ { \__wstf_save_main_setting: }
+ \__wstf_set_top_line:
+ \dim_gset:Nn \g__wstf_stuff_wd_dim
+ { \box_wd:N \g__wstf_stuff_box }
+ \dim_gset:Nn \g__wstf_stuff_ht_dim
+ { \box_ht_plus_dp:N \g__wstf_stuff_box }
+ \dim_gset_eq:NN
+ \g__wstf_remaining_dim
+ \g__wstf_stuff_ht_dim
+ \__wstf_next_para:
+ }
+\__wstf_gadd_hook:nn { env/wrapstuff/before } { \par }
+\cs_new_protected_nopar:Npn \__wstf_minipage_begin:
+ {
+ \__wstf_floatrow_hook:
+ \dim_compare:nNnTF \l__wstf_height_dim > \c_zero_dim
+ { \begin { minipage } [b] [ \l__wstf_height_dim ] [c] { \l__wstf_width_dim } }
+ { \begin { minipage } [b] { \l__wstf_width_dim } }
+ \tl_if_empty:NF \l__wstf_type_tl
+ { \__wstf_set_float: }
+ }
+\cs_new_protected_nopar:Npn \__wstf_minipage_end:
+ {
+ \end { minipage }
+ \hbox_gset_end:
+ \__wstf_float_pos_hook:
+ }
+\cs_new_protected_nopar:Npn \__wstf_hbox_begin:
+ { \tex_ignorespaces:D }
+\cs_new_protected_nopar:Npn \__wstf_hbox_end:
+ {
+ \tex_unskip:D
+ \hbox_gset_end:
+ \dim_compare:nNnT \l__wstf_height_dim > \c_zero_dim
+ { \__wstf_gset_height: }
+ }
+\cs_new_protected_nopar:Npn \__wstf_gset_height:
+ {
+ \hbox_gset:Nn \g__wstf_stuff_box
+ {
+ \box_move_up:nn
+ {
+ ( \l__wstf_height_dim
+ - \box_ht:N \g__wstf_stuff_box
+ + \box_dp:N \g__wstf_stuff_box
+ ) / 2
+ }
+ { \box_use_drop:N \g__wstf_stuff_box }
+ }
+ \box_gset_ht:Nn \g__wstf_stuff_box { \l__wstf_height_dim }
+ \box_gset_dp:Nn \g__wstf_stuff_box { \c_zero_dim }
+ }
+\cs_new_protected_nopar:Npn \__wstf_set_vsep:
+ {
+ \__wstf_gadd_ht:Nn \g__wstf_stuff_box { \l__wstf_abovesep_tl }
+ \dim_set:Nn \l__wstf_shift_dim { \l__wstf_belowsep_tl }
+ \dim_compare:nNnF \l__wstf_shift_dim = \c_zero_dim
+ { \__wstf_set_belowsep: }
+ }
+\cs_new_protected_nopar:Npn \__wstf_set_belowsep:
+ {
+ \hbox_gset:Nn \g__wstf_stuff_box
+ {
+ \box_move_up:nn
+ { \l__wstf_shift_dim + \box_dp:N \g__wstf_stuff_box }
+ { \box_use_drop:N \g__wstf_stuff_box }
+ }
+ \box_gset_dp:Nn \g__wstf_stuff_box { \c_zero_dim }
+ }
+\tl_new:N \l__wstf_main_kv_tl
+\tl_new:N \g__wstf_main_setting_tl
+\box_new:N \g__wstf_stuff_box
+\dim_new:N \g__wstf_stuff_ht_dim
+\dim_new:N \g__wstf_stuff_wd_dim
+\dim_new:N \l__wstf_shift_dim
+\dim_new:N \l__wstf_width_dim
+\dim_new:N \l__wstf_height_dim
+\dim_new:N \g__wstf_prevdepth_dim
+\dim_new:N \g__wstf_remaining_dim
+\cs_new_protected_nopar:Npn \__wstf_attach_label:
+ {
+ \stepcounter { wrapstuff }
+ \hbox_gset:Nn \g__wstf_stuff_box
+ {
+ \__wstf_write_label:
+ \box_use_drop:N \g__wstf_stuff_box
+ }
+ }
+\cs_new_protected_nopar:Npn \__wstf_write_label:
+ {
+ \iow_shipout_x:Nx \@auxout
+ {
+ \c_backslash_str wrapstuff at label
+ { \__wstf_counter:n { wrapstuff } }
+ { \exp_not:N \wrapstuff at counter { page } }
+ }
+ }
+\cs_new:Npn \__wstf_counter:n #1
+ { \int_value:w \value {#1} }
+\cs_new_eq:NN \wrapstuff at counter \__wstf_counter:n
+\cs_new_protected_nopar:Npn \wrapstuff at label
+ { \@newl at bel { wrapstuff at label } }
+\tl_const:Nn \c__wstf_label_tl
+ { wrapstuff at label@ \int_value:w \value { wrapstuff } }
+\__wstf_gadd_hook:nn { begindocument }
+ {
+ \legacy_if:nTF { @filesw }
+ {
+ \iow_now:Nx \@mainaux
+ {
+ \c_backslash_str providecommand
+ \c_backslash_str wrapstuff at label [2] { }
+ }
+ }
+ { \cs_gset_eq:NN \__wstf_write_label: \__wstf_empty: }
+ }
+\newcounter { wrapstuff }
+\cs_new_protected_nopar:Npn \__wstf_save_main_setting:
+ {
+ \exp_args:Nnno
+ \keys_set_filter:nnnN { wrapstuff }
+ { main }
+ { \l__wstf_main_kv_tl } \l__wstf_main_kv_tl
+ \bool_if:NTF \l__wstf_swap_bool
+ { \__wstf_swap_ratio: }
+ { \__wstf_set_ratio:N \l__wstf_ratio_fp }
+ \tl_if_empty:NF \l__wstf_main_kv_tl
+ { \__wstf_save_main_setting_aux: }
+ }
+\cs_new_protected:Npn \__wstf_set_ratio:N #1
+ {
+ \tl_gset:Nx \g__wstf_main_setting_tl
+ { \fp_set:Nn \exp_not:N \l__wstf_ratio_fp { \fp_use:N #1 } }
+ }
+\cs_new_protected:Npn \__wstf_set_ratio:n #1
+ {
+ \tl_gset:Nx \g__wstf_main_setting_tl
+ { \fp_set:Nn \exp_not:N \l__wstf_ratio_fp { \fp_eval:n {#1} } }
+ }
+\cs_new_protected_nopar:Npn \__wstf_save_main_setting_aux:
+ {
+ \exp_args:Nno
+ \keys_precompile:nnN
+ { wrapstuff }
+ { \l__wstf_main_kv_tl } \l__wstf_main_kv_tl
+ \tl_gconcat:NNN \g__wstf_main_setting_tl
+ \g__wstf_main_setting_tl \l__wstf_main_kv_tl
+ }
+\cs_new_protected_nopar:Npn \__wstf_set_top_line:
+ {
+ \int_compare:nNnF \l__wstf_top_int < \c_zero_int
+ {
+ \tl_gput_right:Nx \g__wstf_main_setting_tl
+ {
+ \int_set:Nn \l__wstf_top_int
+ { \int_use:N \l__wstf_top_int }
+ }
+ }
+ }
+\cs_new_protected_nopar:Npn \__wstf_swap_ratio:
+ {
+ \fp_compare:nF
+ { \c_zero_fp < \l__wstf_ratio_fp < \c_one_fp }
+ { \fp_zero:N \l__wstf_ratio_fp }
+ \int_if_odd:nTF
+ {
+ \exp_args:Ne \cs_if_exist_use:cF
+ { \c__wstf_label_tl }
+ { \__wstf_counter:n { page } }
+ }
+ { \bool_if:NTF \l__wstf_inner_bool }
+ { \bool_if:NTF \l__wstf_outer_bool }
+ { \__wstf_set_ratio:N \l__wstf_ratio_fp }
+ { \__wstf_set_ratio:n { \c_one_fp - \l__wstf_ratio_fp } }
+ }
+\bool_new:N \l__wstf_swap_bool
+\bool_new:N \l__wstf_inner_bool
+\bool_new:N \l__wstf_outer_bool
+\cs_new_protected:Npn \__wstf_gadd_ht:Nn #1#2
+ { \box_gset_ht:Nn #1 { \box_ht:N #1 + \dim_eval:n {#2} } }
+\cs_new_protected:Npn \__wstf_gsub_ht:Nn #1#2
+ { \box_gset_ht:Nn #1 { \box_ht:N #1 - \dim_eval:n {#2} } }
+\cs_new_protected_nopar:Npn \__wstf_clear:
+ {
+ \__wstf_clear_para_hook:
+ \__wstf_clear_kludge:
+ \__wstf_clear_variable:
+ }
+\cs_new_protected_nopar:Npn \__wstf_clear_variable:
+ {
+ \int_gset:Nn \g__wstf_top_int { -1 }
+ \int_gzero:N \g__wstf_window_int
+ \dim_gzero:N \g__wstf_total_ht_dim
+ \dim_gzero:N \g__wstf_column_left_dim
+ \tl_gclear:N \g__wstf_main_setting_tl
+ \bool_gset_false:N \g__wstf_next_bool
+ \bool_gset_false:N \g__wstf_hoffset_bool
+ \bool_gset_false:N \g__wstf_next_hang_bool
+ \bool_gset_false:N \g__wstf_first_save_bool
+ \bool_gset_false:N \g__wstf_right_move_bool
+ \bool_gset_false:N \g__wstf_column_right_bool
+ }
+\cs_new_protected_nopar:Npn \__wstf_clear_kludge:
+ {
+ \bool_if:NTF \g__wstf_next_bool
+ {
+ \box_gclear:N \g__wstf_stuff_box
+ \skip_vertical:n
+ { \tex_baselineskip:D * \g__wstf_window_int }
+ }
+ {
+ \box_if_empty:NF \g__wstf_stuff_box
+ { \__wstf_clear_stuff_box: }
+ }
+ }
+\cs_new_protected_nopar:Npn \__wstf_clear_stuff_box:
+ {
+ \__wstf_ignore_depth:
+ \skip_set:Nn \l__wstf_last_skip
+ { \box_dp:N \strutbox }
+ \skip_vertical:N \l__wstf_last_skip
+ \box_use_drop:N \g__wstf_stuff_box
+ \skip_vertical:N \l__wstf_last_skip
+ \__wstf_ignore_depth:
+ }
+\__wstf_gadd_hook:nn { para/before } { \__wstf_para_before: }
+\__wstf_gadd_hook:nn { para/begin } { \__wstf_para_begin: }
+\__wstf_gadd_hook:nn { para/end } { \__wstf_para_end: }
+\cs_new_protected_nopar:Npn \__wstf_next_para:
+ {
+ \cs_gset_eq:NN \__wstf_para_before: \__wstf_env_before:
+ \cs_gset_eq:NN \__wstf_para_begin: \__wstf_env_begin:
+ \cs_gset_eq:NN \__wstf_para_end: \__wstf_env_end:
+ }
+\cs_new_protected_nopar:Npn \__wstf_env_before:
+ { \dim_gset_eq:NN \g__wstf_prevdepth_dim \tex_prevdepth:D }
+\cs_new_protected_nopar:Npn \__wstf_env_begin:
+ { \begin { wrapstuff at par } }
+\cs_new_protected_nopar:Npn \__wstf_env_end:
+ { \end { wrapstuff at par } }
+\cs_new_protected_nopar:Npn \__wstf_clear_para_hook:
+ {
+ \cs_gset_eq:NN \__wstf_para_before: \__wstf_empty:
+ \cs_gset_eq:NN \__wstf_para_begin: \__wstf_empty:
+ \cs_gset_eq:NN \__wstf_para_end: \__wstf_empty:
+ }
+\cs_new_protected_nopar:Npn \__wstf_empty:
+ { }
+\cs_new_eq:NN \__wstf_para_before: \__wstf_empty:
+\cs_new_eq:NN \__wstf_para_begin: \__wstf_empty:
+\cs_new_eq:NN \__wstf_para_end: \__wstf_empty:
+\NewDocumentEnvironment { wrapstuff at par } { }
+ {
+ \tl_use:N \g__wstf_main_setting_tl
+ \dim_set:Nn \l__wstf_leftsep_dim { \l__wstf_leftsep_tl }
+ \dim_set:Nn \l__wstf_rightsep_dim { \l__wstf_rightsep_tl }
+ \dim_set:Nn \l__wstf_voffset_dim { \l__wstf_voffset_tl }
+ \dim_set:Nn \l__wstf_line_dim { \l__wstf_linewidth_tl }
+ \dim_set:Nn \l__wstf_min_dim { \box_dp:N \strutbox }
+ \dim_set_eq:NN \l__wstf_main_width_dim \l__wstf_line_dim
+ \dim_sub:Nn \l__wstf_line_dim
+ { \tex_leftskip:D + \tex_rightskip:D }
+ \dim_set:Nn \l__wstf_window_dim
+ { \l__wstf_line_dim - \g__wstf_stuff_wd_dim }
+ \fp_compare:nNnTF \l__wstf_ratio_fp > \c_zero_fp
+ {
+ \fp_compare:nNnTF \l__wstf_ratio_fp < \c_one_fp
+ { \__wstf_set_window: }
+ { \__wstf_set_hang_right: }
+ }
+ { \__wstf_set_hang_left: }
+ \int_compare:nNnTF \g__wstf_window_int > \c_zero_int
+ {
+ \int_set_eq:NN \l__wstf_window_int \g__wstf_window_int
+ \int_zero:N \l__wstf_top_int
+ }
+ { \__wstf_set_lines: }
+ \bool_if:NTF \l__wstf_hang_bool
+ {
+ \dim_set_eq:NN \l__wstf_display_dim \l__wstf_window_dim
+ \int_set_eq:NN \l__wstf_window_line_int \l__wstf_window_int
+ }
+ {
+ \dim_set_eq:NN \l__wstf_display_dim \l__wstf_l_dim
+ \int_set:Nn \l__wstf_window_int { \l__wstf_window_int * 2 }
+ \int_set:Nn \l__wstf_window_line_int
+ {
+ \bool_if:NTF \g__wstf_column_right_bool
+ { \l__wstf_window_int / 2 + \g__wstf_column_window_int }
+ { \l__wstf_window_int }
+ }
+ }
+ \cs_gset_eq:NN \__wstf_para_before: \__wstf_empty:
+ \cs_gset_eq:NN \__wstf_para_begin: \__wstf_empty:
+ \__wstf_save_parshape:
+ \vbox_set:Nw \l__wstf_body_box
+ \__wstf_set_prevdepth:N \g__wstf_prevdepth_dim
+ \__wstf_save_tex_skip:
+ \__wstf_tex_parameter:
+ \__wstf_restore_parshape:
+ \__wstf_display_parameter:
+ \__wstf_make_main_parshape:
+ \para_raw_noindent:
+ }
+ {
+ \__wstf_save_hangfrom:
+ \__wstf_save_tex_skip:
+ \__wstf_group_kludge:
+ \__wstf_tex_parameter:
+ \__wstf_make_main_parshape:
+ \para_raw_end:
+ \int_gset_eq:NN \g__wstf_line_int \tex_prevgraf:D
+ \vbox_set_end:
+ \__wstf_adjust_tex_skip:
+ \cs_gset_eq:NN \__wstf_para_end: \__wstf_empty:
+ \int_compare:nNnTF \g__wstf_line_int > \l__wstf_top_int
+ { \__wstf_build_par: }
+ { \__wstf_put_par: }
+ }
+\box_new:N \l__wstf_body_box
+\box_new:N \l__wstf_window_box
+\int_new:N \l__wstf_window_int
+\int_new:N \g__wstf_window_int
+\int_new:N \g__wstf_line_int
+\int_new:N \l__wstf_window_line_int
+\int_new:N \g__wstf_column_window_int
+\dim_new:N \l__wstf_l_dim
+\dim_new:N \l__wstf_r_dim
+\dim_new:N \l__wstf_min_dim
+\dim_new:N \l__wstf_line_dim
+\dim_new:N \l__wstf_window_dim
+\dim_new:N \l__wstf_display_dim
+\dim_new:N \l__wstf_voffset_dim
+\dim_new:N \l__wstf_leftsep_dim
+\dim_new:N \l__wstf_rightsep_dim
+\dim_new:N \g__wstf_window_ht_dim
+\dim_new:N \l__wstf_main_width_dim
+\int_new:N \g__wstf_top_int
+\int_gdecr:N \g__wstf_top_int
+\bool_new:N \l__wstf_hang_bool
+\cs_new_protected_nopar:Npn \__wstf_set_hang_left:
+ {
+ \bool_set_true:N \l__wstf_hang_bool
+ \bool_if:NF \g__wstf_hoffset_bool
+ { \__wstf_set_hoffset:NN \l__wstf_rightsep_dim \use:nn }
+ \dim_sub:Nn \l__wstf_window_dim { \l__wstf_rightsep_dim }
+ \dim_zero:N \l__wstf_l_dim
+ \dim_set_eq:NN \l__wstf_r_dim \l__wstf_window_dim
+ \cs_set_eq:NN \__wstf_build_box: \__wstf_build_hang:
+ }
+\cs_new_protected_nopar:Npn \__wstf_set_hang_right:
+ {
+ \bool_set_true:N \l__wstf_hang_bool
+ \bool_if:NF \g__wstf_hoffset_bool
+ { \__wstf_set_hoffset:NN \l__wstf_leftsep_dim \use_ii_i:nn }
+ \dim_sub:Nn \l__wstf_window_dim { \l__wstf_leftsep_dim }
+ \dim_zero:N \l__wstf_r_dim
+ \dim_set_eq:NN \l__wstf_l_dim \l__wstf_window_dim
+ \cs_set_eq:NN \__wstf_build_box: \__wstf_build_hang:
+ }
+\cs_new_protected_nopar:Npn \__wstf_set_window:
+ {
+ \bool_set_false:N \l__wstf_hang_bool
+ \dim_sub:Nn \l__wstf_window_dim
+ { \l__wstf_leftsep_dim + \l__wstf_rightsep_dim }
+ \dim_set:Nn \l__wstf_l_dim
+ { \__wstf_ratio:Nn \l__wstf_ratio_fp { \l__wstf_window_dim } }
+ \dim_set:Nn \l__wstf_r_dim
+ { \l__wstf_window_dim - \l__wstf_l_dim }
+ \bool_if:NTF \l__wstf_column_bool
+ { \cs_set_eq:NN \__wstf_build_box: \__wstf_build_column: }
+ { \cs_set_eq:NN \__wstf_build_box: \__wstf_build_block: }
+ }
+\cs_new_protected:Npn \__wstf_set_hoffset:NN #1#2
+ {
+ \bool_gset_true:N \g__wstf_hoffset_bool
+ \dim_set:Nn \l__wstf_hoffset_width_dim
+ { #1 + \g__wstf_stuff_wd_dim }
+ \group_begin:
+ \cs_set_eq:NN \width \l__wstf_hoffset_width_dim
+ \dim_gset:Nn \g__wstf_hoffset_dim { \l__wstf_hoffset_tl }
+ \group_end:
+ \int_compare:nNnF \g__wstf_hoffset_dim = \c_zero_dim
+ {
+ \hbox_gset:Nn \g__wstf_stuff_box
+ {
+ #2 { \tex_kern:D - \g__wstf_hoffset_dim }
+ { \box_use_drop:N \g__wstf_stuff_box }
+ }
+ \dim_add:Nn \l__wstf_window_dim { \g__wstf_hoffset_dim }
+ }
+ }
+\dim_new:N \g__wstf_hoffset_dim
+\dim_new:N \l__wstf_hoffset_width_dim
+\bool_new:N \g__wstf_hoffset_bool
+\cs_new_protected_nopar:Npn \__wstf_set_lines:
+ {
+ \bool_if:NTF \g__wstf_next_bool
+ { \tl_clear:N \l__wstf_lines_tl }
+ { \tl_set:Nx \l__wstf_lines_tl { \l__wstf_lines_tl } }
+ \int_set:Nn \l__wstf_window_int
+ {
+ \tl_if_empty:NTF \l__wstf_lines_tl
+ { \__wstf_unit:n { \g__wstf_remaining_dim + \l__wstf_min_dim } }
+ { \l__wstf_lines_tl }
+ }
+ \bool_if:NF \g__wstf_next_bool
+ { \__wstf_window_init: }
+ \int_compare:nNnTF \g__wstf_top_int < \c_zero_int
+ {
+ \int_compare:nNnT \l__wstf_top_int < \c_zero_int
+ { \int_zero:N \l__wstf_top_int }
+ }
+ { \int_set_eq:NN \l__wstf_top_int \g__wstf_top_int }
+ }
+\cs_new_protected_nopar:Npn \__wstf_window_init:
+ {
+ \int_gset_eq:NN \g__wstf_column_window_int \l__wstf_window_int
+ \dim_gset:Nn \g__wstf_window_ht_dim
+ { \tex_baselineskip:D * \g__wstf_column_window_int }
+ \tl_if_empty:NF \l__wstf_lines_tl
+ {
+ \dim_gset:Nn \g__wstf_remaining_dim
+ { \g__wstf_window_ht_dim - \box_ht:N \strutbox }
+ \dim_gset_eq:NN \g__wstf_stuff_ht_dim \g__wstf_remaining_dim
+ }
+ }
+\cs_new_protected_nopar:Npn \__wstf_make_main_parshape:
+ {
+ \dim_compare:nNnTF \g__wstf_hangindent_dim > \c_zero_dim
+ {
+ \int_compare:nNnTF \g__wstf_hangafter_int = \c_one_int
+ { \__wstf_make_hangfrom: }
+ { \__wstf_make_main_parshape_aux: }
+ }
+ { \__wstf_make_main_parshape_aux: }
+ }
+\cs_new_protected_nopar:Npn \__wstf_make_main_parshape_aux:
+ {
+ \bool_gset_false:N \g__wstf_hangfrom_bool
+ \tex_parshape:D
+ \int_eval:n { \l__wstf_top_int + 1 } ~
+ \prg_replicate:nn
+ { \l__wstf_top_int }
+ { \g__wstf_parshape_indent_dim \g__wstf_parshape_length_dim }
+ \c_zero_dim \c_max_dim
+ }
+\cs_new_protected_nopar:Npn \__wstf_save_parshape:
+ {
+ \int_gset_eq:NN \g__wstf_parshape_int \tex_parshape:D
+ \int_compare:nNnTF \g__wstf_parshape_int = \c_one_int
+ {
+ \dim_gset:Nn \g__wstf_parshape_indent_dim
+ { \tex_parshapeindent:D \c_one_int }
+ \dim_gset:Nn \g__wstf_parshape_length_dim
+ { \tex_parshapelength:D \c_one_int }
+ }
+ {
+ \int_gzero:N \g__wstf_parshape_int
+ \dim_gzero:N \g__wstf_parshape_indent_dim
+ \dim_gset_eq:NN \g__wstf_parshape_length_dim \l__wstf_main_width_dim
+ \int_gset_eq:NN \g__wstf_hangafter_int \tex_hangafter:D
+ \dim_gset_eq:NN \g__wstf_hangindent_dim \tex_hangindent:D
+ }
+ }
+\cs_new_protected_nopar:Npn \__wstf_restore_parshape:
+ {
+ \int_compare:nNnTF \g__wstf_parshape_int = \c_one_int
+ {
+ \tex_parshape:D \g__wstf_parshape_int
+ \g__wstf_parshape_indent_dim \g__wstf_parshape_length_dim
+ }
+ { \__wstf_restore_hangfrom: }
+ }
+\cs_new_protected_nopar:Npn \__wstf_parshape_kern:
+ {
+ \dim_compare:nNnT \l__wstf_l_dim = \c_zero_dim
+ {
+ \dim_compare:nNnF \g__wstf_parshape_indent_dim = \c_zero_dim
+ { \tex_kern:D - \g__wstf_parshape_indent_dim }
+ }
+ }
+\cs_new_protected_nopar:Npn \__wstf_make_hangfrom:
+ {
+ \bool_if:NTF \l__wstf_hang_bool
+ { \__wstf_make_hangfrom_aux: }
+ { \__wstf_make_main_parshape_aux: }
+ }
+\cs_new_protected_nopar:Npn \__wstf_make_hangfrom_aux:
+ {
+ \__wstf_restore_hangfrom:
+ \int_zero:N \tex_parshape:D
+ \bool_gset_true:N \g__wstf_hangfrom_bool
+ \dim_set_eq:NN \tex_hsize:D \l__wstf_window_dim
+ }
+\cs_new_protected_nopar:Npn \__wstf_save_hangfrom:
+ {
+ \int_gset_eq:NN \g__wstf_hangafter_int \tex_hangafter:D
+ \dim_gset_eq:NN \g__wstf_hangindent_dim \tex_hangindent:D
+ }
+\cs_new_protected_nopar:Npn \__wstf_restore_hangfrom:
+ {
+ \int_set_eq:NN \tex_hangafter:D \g__wstf_hangafter_int
+ \dim_set_eq:NN \tex_hangindent:D \g__wstf_hangindent_dim
+ }
+\bool_new:N \g__wstf_hangfrom_bool
+\int_new:N \g__wstf_parshape_int
+\int_new:N \g__wstf_hangafter_int
+\dim_new:N \g__wstf_hangindent_dim
+\dim_new:N \g__wstf_parshape_indent_dim
+\dim_new:N \g__wstf_parshape_length_dim
+\cs_new_protected_nopar:Npn \__wstf_group_kludge:
+ {
+ \scan_stop:
+ \int_compare:nNnTF \tex_currentgrouptype:D = \c_one_int
+ {
+ \c_group_end_token
+ \cs_gset_eq:NN \__wstf_group_begin: \c_group_begin_token
+ }
+ { \cs_gset_eq:NN \__wstf_group_begin: \__wstf_empty: }
+ \legacy_if:nTF { @noitemarg }
+ { \cs_gset_eq:NN \__wstf_set_itemarg: \@noitemargtrue }
+ { \cs_gset_eq:NN \__wstf_set_itemarg: \__wstf_empty: }
+ }
+\cs_new_eq:NN \__wstf_set_itemarg: \__wstf_empty:
+\cs_new_eq:NN \__wstf_group_begin: \__wstf_empty:
+\__wstf_gadd_hook:nn { env/wrapstuff at par/after }
+ {
+ \__wstf_set_itemarg:
+ \__wstf_group_begin:
+ }
+\cs_new:Npn \__wstf_ratio:Nn #1#2
+ { \fp_to_dim:n { #1 \dim_to_fp:n {#2} } }
+\cs_new:Npn \__wstf_unit:n #1
+ {
+ \fp_eval:n
+ {
+ ceil
+ (
+ \dim_to_decimal_in_unit:nn
+ {#1}
+ { \tex_baselineskip:D }
+ )
+ }
+ }
+\cs_new_protected_nopar:Npn \__wstf_save_tex_skip:
+ {
+ \skip_gset_eq:NN \g__wstf_left_skip \tex_leftskip:D
+ \skip_gset_eq:NN \g__wstf_right_skip \tex_rightskip:D
+ \skip_gset_eq:NN \g__wstf_parfill_skip \tex_parfillskip:D
+ \skip_gset_eq:NN \g__wstf_baseline_skip \tex_baselineskip:D
+ \skip_gset:Nn \g__wstf_main_left_skip { - \tex_leftskip:D }
+ }
+\cs_new_protected_nopar:Npn \__wstf_adjust_tex_skip:
+ {
+ \__wstf_adjust_skip:N \g__wstf_left_skip
+ \__wstf_adjust_skip:N \g__wstf_right_skip
+ \__wstf_adjust_skip:N \g__wstf_parfill_skip
+ }
+\cs_new_protected:Npn \__wstf_adjust_skip:N #1
+ { \skip_gsub:Nn #1 { \dim_eval:n {#1} } }
+\cs_new_protected_nopar:Npn \__wstf_tex_parameter:
+ {
+ \int_zero:N \tex_clubpenalty:D
+ \int_zero:N \tex_widowpenalty:D
+ \int_zero:N \tex_interlinepenalty:D
+ \int_zero:N \tex_displaywidowpenalty:D
+ \int_zero:N \tex_clubpenalties:D
+ \int_zero:N \tex_widowpenalties:D
+ \int_zero:N \tex_interlinepenalties:D
+ \int_zero:N \tex_displaywidowpenalties:D
+ \skip_set_eq:NN \tex_leftskip:D \g__wstf_left_skip
+ \skip_set_eq:NN \tex_rightskip:D \g__wstf_right_skip
+ \skip_set_eq:NN \tex_parfillskip:D \g__wstf_parfill_skip
+ }
+\skip_new:N \g__wstf_left_skip
+\skip_new:N \g__wstf_right_skip
+\skip_new:N \g__wstf_parfill_skip
+\skip_new:N \g__wstf_baseline_skip
+\skip_new:N \g__wstf_main_left_skip
+\cs_new_protected_nopar:Npn \__wstf_display_parameter:
+ {
+ \bool_gset_false:N \g__wstf_display_bool
+ \tex_everydisplay:D \exp_after:wN
+ {
+ \tex_the:D \tex_everydisplay:D
+ \__wstf_test_leqno:
+ \dim_compare:nNnF \tex_displaywidth:D < \c_max_dim
+ {
+ \bool_gset_true:N \g__wstf_display_bool
+ \dim_set_eq:NN \tex_displaywidth:D \l__wstf_display_dim
+ }
+ }
+ }
+\cs_new_eq:NN \__wstf_test_leqno: \__wstf_empty:
+\bool_new:N \g__wstf_display_bool
+\cs_new_protected_nopar:Npn \__wstf_build_par:
+ {
+ \bool_if:NTF \g__wstf_hangfrom_bool
+ { \__wstf_build_box: }
+ { \__wstf_build_par_aux: }
+ \box_if_empty:NTF \l__wstf_window_box
+ { \__wstf_put_next_par: }
+ { \__wstf_put_box: }
+ }
+\cs_new_protected_nopar:Npn \__wstf_build_par_aux:
+ {
+ \__wstf_extract_display_hbox:NN \l__wstf_body_box \l__wstf_bottom_box
+ \int_compare:nNnT \l__wstf_top_int > \c_zero_int
+ { \__wstf_put_body_box: }
+ \box_if_empty:NTF \l__wstf_bottom_box
+ {
+ \box_if_empty:NF \g__wstf_display_box
+ { \__wstf_build_display_box: }
+ }
+ { \__wstf_build_body_box: }
+ }
+\box_new:N \l__wstf_bottom_box
+\cs_new_protected_nopar:Npn \__wstf_put_par:
+ {
+ \int_gset:Nn \g__wstf_top_int
+ { \l__wstf_top_int - \g__wstf_line_int }
+ \int_gzero:N \g__wstf_window_int
+ \__wstf_put_body_box:
+ \skip_zero:N \tex_parskip:D
+ \para_raw_noindent:
+ \__wstf_next_para:
+ }
+\cs_new_protected_nopar:Npn \__wstf_put_body_box:
+ {
+ \para_raw_end:
+ \dim_compare:nNnTF { \box_wd:N \l__wstf_body_box } < \c_max_dim
+ { \__wstf_put_body_aux:N \l__wstf_body_box }
+ {
+ \__wstf_extract_hbox:NN \l__wstf_body_box \l__wstf_bottom_box
+ \__wstf_put_body_aux:N \l__wstf_body_box
+ \box_set_eq_drop:NN \l__wstf_body_box \l__wstf_bottom_box
+ }
+ \para_raw_end:
+ }
+\cs_new_protected_nopar:Npn \__wstf_put_body_aux:N #1
+ {
+ \dim_gset:Nn \g__wstf_prevdepth_dim { \box_dp:N #1 }
+ \vbox_unpack_drop:N #1
+ \__wstf_set_prevdepth:N \g__wstf_prevdepth_dim
+ }
+\cs_new_protected_nopar:Npn \__wstf_put_next_par:
+ {
+ \int_gzero:N \g__wstf_top_int
+ \int_gzero:N \g__wstf_window_int
+ \skip_zero:N \tex_parskip:D
+ \para_raw_noindent:
+ \__wstf_next_para:
+ }
+\cs_new_protected_nopar:Npn \__wstf_build_display_box:
+ {
+ \bool_set_true:N \l__wstf_display_bool
+ \bool_if:NTF \g__wstf_amsmath_bool
+ { \__wstf_build_display_amsmath: }
+ { \__wstf_build_display_normal: }
+ \box_if_empty:NTF \l__wstf_body_box
+ { \__wstf_build_display_auxi: }
+ { \__wstf_build_display_auxii: }
+ }
+\cs_new_protected_nopar:Npn \__wstf_build_display_amsmath:
+ {
+ \vbox_gset:Nn \g__wstf_equation_box
+ {
+ \skip_vertical:n { - \g__wstf_display_pre_skip }
+ \vbox_unpack_drop:N \g__wstf_display_box
+ \skip_gset_eq:NN \g__wstf_pos_skip \tex_lastskip:D
+ \tex_unskip:D
+ \int_gset_eq:NN \g__wstf_pos_int \tex_lastpenalty:D
+ \tex_unpenalty:D
+ \skip_gadd:Nn \g__wstf_pos_skip { \tex_lastskip:D }
+ \tex_unskip:D
+ \tex_unpenalty:D
+ }
+ \box_gset_wd:Nn \g__wstf_equation_box
+ { \l__wstf_display_dim }
+ \vbox_gset:Nn \g__wstf_display_box
+ {
+ \tex_penalty:D \g__wstf_display_pre_int
+ \skip_vertical:N \g__wstf_display_pre_skip
+ }
+ \skip_gset_eq:NN \g__wstf_pre_skip \g__wstf_display_pre_skip
+ }
+\cs_new_protected_nopar:Npn \__wstf_build_display_normal:
+ {
+ \vbox_gset:Nn \g__wstf_display_box
+ {
+ \vbox_unpack_drop:N \g__wstf_display_box
+ \skip_gset_eq:NN \g__wstf_pos_skip \tex_lastskip:D
+ \tex_unskip:D
+ \int_gset_eq:NN \g__wstf_pos_int \tex_lastpenalty:D
+ \tex_unpenalty:D
+ \box_gset_to_last:N \g__wstf_equation_box
+ \skip_gset_eq:NN \g__wstf_pre_skip \tex_lastskip:D
+ \tex_unskip:D
+ \skip_gadd:Nn \g__wstf_pre_skip { \tex_lastskip:D }
+ \tex_unskip:D
+ \skip_vertical:N \g__wstf_pre_skip
+ }
+ }
+\cs_new_protected_nopar:Npn \__wstf_build_display_auxi:
+ {
+ \bool_if:NTF \g__wstf_amsmath_bool
+ { \box_set_eq_drop:NN \l__wstf_window_box \g__wstf_equation_box }
+ {
+ \hbox_set_to_wd:Nnn \l__wstf_window_box
+ { \l__wstf_display_dim }
+ {
+ \tex_hss:D
+ \__wstf_adjust_equation:
+ \box_use_drop:N \g__wstf_equation_box
+ \tex_hss:D
+ }
+ }
+ \dim_gset:Nn \g__wstf_ht_dim { \box_ht:N \l__wstf_window_box }
+ \dim_add:Nn \l__wstf_voffset_dim
+ { \box_ht:N \g__wstf_display_box / 2 }
+ }
+\cs_new_protected_nopar:Npn \__wstf_build_display_auxii:
+ {
+ \box_if_horizontal:NTF \l__wstf_body_box
+ {
+ \box_set_eq:NN \l__wstf_bottom_box \l__wstf_body_box
+ \__wstf_build_display_auxiii:
+ }
+ {
+ \__wstf_extract_hbox:NN \l__wstf_body_box \l__wstf_bottom_box
+ \str_if_eq:eeTF
+ {
+ \dim_eval:n { \box_ht:N \l__wstf_body_box }
+ \dim_eval:n { \box_dp:N \l__wstf_body_box }
+ \dim_eval:n { \box_ht:N \l__wstf_bottom_box }
+ \dim_eval:n { \box_dp:N \l__wstf_bottom_box }
+ }
+ { \c__wstf_zero_pt_str }
+ {
+ \vbox_unpack_drop:N \l__wstf_body_box
+ \box_clear:N \l__wstf_bottom_box
+ \__wstf_build_display_auxi:
+ }
+ { \__wstf_build_display_auxiii: }
+ }
+ }
+\str_const:Nx \c__wstf_zero_pt_str
+ {
+ \dim_use:N \c_zero_dim
+ \dim_use:N \c_zero_dim
+ \dim_use:N \c_zero_dim
+ \dim_use:N \c_zero_dim
+ }
+\cs_new_protected_nopar:Npn \__wstf_build_display_auxiii:
+ {
+ \bool_set_true:N \l__wstf_attach_equation_bool
+ \bool_if:NTF \g__wstf_amsmath_bool
+ { \box_set_eq_drop:NN \l__wstf_display_box \g__wstf_display_box }
+ {
+ \box_gclear:N \g__wstf_display_box
+ \__wstf_adjust_equation:
+ }
+ \__wstf_build_body_box:
+ }
+\cs_new_protected_nopar:Npn \__wstf_attach_equation:N
+ {
+ \bool_if:NTF \g__wstf_amsmath_bool
+ { \__wstf_attach_equation_amsmath:N }
+ { \__wstf_attach_equation_normal:N }
+ }
+\cs_new_protected:Npn \__wstf_attach_equation_amsmath:N #1
+ {
+ \vbox_set:Nn #1
+ {
+ \box_use:N #1
+ \__wstf_ignore_depth:
+ \vbox_unpack_drop:N \l__wstf_display_box
+ \skip_vertical:n
+ { \g__wstf_display_pre_dim - \box_dp:N #1 }
+ \box_use_drop:N \g__wstf_equation_box
+ }
+ }
+\cs_new_protected:Npn \__wstf_attach_equation_normal:N #1
+ {
+ \vbox_set:Nn #1
+ {
+ \__wstf_tex_parameter:
+ \dim_set_eq:NN \tex_hsize:D \l__wstf_display_dim
+ \para_raw_noindent:
+ \hbox_unpack_drop:N #1 \tex_unskip:D
+ \__wstf_insert_equation:
+ \para_raw_end:
+ \skip_gset_eq:NN \g__wstf_pos_skip \tex_lastskip:D
+ \tex_unskip:D
+ \int_gset_eq:NN \g__wstf_pos_int \tex_lastpenalty:D
+ \tex_unpenalty:D
+ }
+ }
+\cs_new_protected_nopar:Npn \__wstf_insert_equation:
+ {
+ \c_math_toggle_token \c_math_toggle_token
+ \dim_compare:nNnTF \tex_displaywidth:D = \l__wstf_display_dim
+ { \box_use_drop:N \g__wstf_equation_box }
+ {
+ \bool_if:NTF \g__wstf_eqnum_bool
+ { \__wstf_repack_equation: }
+ { \box_use_drop:N \g__wstf_equation_box }
+ }
+ \c_math_toggle_token \c_math_toggle_token
+ }
+\cs_new_protected_nopar:Npn \__wstf_repack_equation:
+ {
+ \box_gclear:N \g__wstf_equation_box
+ \box_use_drop:N \g__wstf_eqbody_box
+ \bool_if:NTF \g__wstf_leqno_bool
+ { \tex_leqno:D }
+ { \tex_eqno:D }
+ \box_use_drop:N \g__wstf_eqnum_box
+ }
+\cs_new_protected_nopar:Npn \__wstf_adjust_equation:
+ {
+ \__wstf_test_eqnum:
+ \bool_if:NT \g__wstf_eqnum_bool
+ { \__wstf_adjust_equation_width: }
+ }
+\cs_new_protected_nopar:Npn \__wstf_test_eqnum:
+ {
+ \hbox_set:Nn \l__wstf_last_box
+ {
+ \bool_gset_false:N \g__wstf_eqnum_bool
+ \hbox_unpack:N \g__wstf_equation_box
+ \__wstf_if_last_hlist:F { \use_none_delimit_by_q_stop:w }
+ \box_gset_to_last:N \g__wstf_eqnum_box
+ \__wstf_if_last_kern:F { \use_none_delimit_by_q_stop:w }
+ \tex_unkern:D
+ \__wstf_if_last_hlist:F { \use_none_delimit_by_q_stop:w }
+ \box_gset_to_last:N \g__wstf_eqbody_box
+ \__wstf_if_last_none:F { \use_none_delimit_by_q_stop:w }
+ \bool_gset_true:N \g__wstf_eqnum_bool
+ \use_none_delimit_by_q_stop:w \q_stop
+ }
+ }
+\cs_new_protected_nopar:Npn \__wstf_adjust_equation_width:
+ {
+ \bool_if:NTF \g__wstf_leqno_bool
+ { \__wstf_adjust_leqno: }
+ {
+ \box_gset_wd:Nn \g__wstf_equation_box
+ { \box_wd:N \g__wstf_eqbody_box }
+ }
+ }
+\cs_new_protected_nopar:Npn \__wstf_adjust_leqno:
+ {
+ \box_set_eq_drop:NN \l__wstf_last_box \g__wstf_eqnum_box
+ \box_gset_eq_drop:NN \g__wstf_eqnum_box \g__wstf_eqbody_box
+ \box_gset_eq_drop:NN \g__wstf_eqbody_box \l__wstf_last_box
+ \hbox_gset:Nn \g__wstf_equation_box
+ {
+ \skip_horizontal:n
+ {
+ \box_wd:N \g__wstf_eqbody_box
+ - \box_wd:N \g__wstf_equation_box
+ }
+ \box_use_drop:N \g__wstf_equation_box
+ }
+ }
+\box_new:N \g__wstf_eqbody_box
+\box_new:N \g__wstf_eqnum_box
+\box_new:N \g__wstf_equation_box
+\box_new:N \l__wstf_display_box
+\int_new:N \g__wstf_pos_int
+\skip_new:N \g__wstf_pos_skip
+\bool_new:N \g__wstf_eqnum_bool
+\bool_new:N \g__wstf_leqno_bool
+\bool_new:N \l__wstf_display_bool
+\bool_new:N \l__wstf_attach_equation_bool
+\cs_new_protected_nopar:Npn \__wstf_add_pos_skip:
+ {
+ \bool_lazy_or:nnTF
+ { \g__wstf_right_move_bool }
+ { \int_compare_p:nNn \g__wstf_window_int > \c_zero_int }
+ {
+ \tex_vadjust:D
+ {
+ \tex_penalty:D \c__wstf_nobreak_int
+ \bool_if:NT \l__wstf_display_bool
+ { \skip_vertical:N \g__wstf_pos_skip }
+ }
+ }
+ {
+ \bool_if:NT \l__wstf_display_bool
+ {
+ \tex_vadjust:D
+ {
+ \tex_penalty:D \g__wstf_pos_int
+ \skip_vertical:N \g__wstf_pos_skip
+ }
+ }
+ }
+ \int_gzero:N \g__wstf_pos_int
+ \skip_gzero:N \g__wstf_pos_skip
+ }
+\cs_new_protected_nopar:Npn \__wstf_build_body_box:
+ {
+ \box_set_eq:NN \l__wstf_save_body_box \l__wstf_bottom_box
+ \__wstf_build_window:
+ \int_compare:nNnTF \g__wstf_line_int > \l__wstf_window_line_int
+ { \__wstf_extract_hbox:NN \l__wstf_body_box \l__wstf_bottom_box }
+ { \box_clear:N \l__wstf_bottom_box }
+ \box_if_empty:NF \l__wstf_bottom_box
+ { \bool_set_false:N \l__wstf_attach_equation_bool }
+ \box_clear:N \l__wstf_window_box
+ \__wstf_build_box:
+ }
+\box_new:N \l__wstf_save_body_box
+\cs_new_protected_nopar:Npn \__wstf_build_window:
+ {
+ \vbox_set:Nn \l__wstf_body_box
+ {
+ \__wstf_tex_parameter:
+ \__wstf_make_parshape:
+ \__wstf_column_penalties:
+ \dim_zero:N \tex_emergencystretch:D
+ \dim_set_eq:NN \tex_hfuzz:D \c_max_dim
+ \dim_set_eq:NN \tex_vfuzz:D \c_max_dim
+ \int_set_eq:NN \tex_hbadness:D \c_max_int
+ \int_set_eq:NN \tex_vbadness:D \c_max_int
+ \int_set:Nn \tex_tolerance:D { 1000 }
+ \para_raw_noindent:
+ \hbox_unpack_drop:N \l__wstf_bottom_box
+ \para_raw_end:
+ \int_gset_eq:NN \g__wstf_line_int \tex_prevgraf:D
+ }
+ }
+\cs_new_protected_nopar:Npn \__wstf_make_parshape:
+ {
+ \tex_parshape:D
+ \int_eval:n { \l__wstf_window_line_int + 1 } ~
+ \bool_if:NTF \l__wstf_hang_bool
+ {
+ \prg_replicate:nn
+ { \l__wstf_window_int }
+ { \c_zero_dim \l__wstf_window_dim }
+ }
+ {
+ \bool_if:NTF \l__wstf_column_bool
+ {
+ \prg_replicate:nn
+ { \l__wstf_window_int / 2 }
+ { \c_zero_dim \l__wstf_l_dim }
+ \prg_replicate:nn
+ {
+ \bool_if:NTF \g__wstf_column_right_bool
+ { \g__wstf_column_window_int }
+ { \l__wstf_window_int / 2 }
+ }
+ { \c_zero_dim \l__wstf_r_dim }
+ }
+ {
+ \prg_replicate:nn
+ { \l__wstf_window_int / 2 }
+ {
+ \c_zero_dim \l__wstf_l_dim
+ \c_zero_dim \l__wstf_r_dim
+ }
+ }
+ }
+ \c_zero_dim \c_max_dim
+ }
+\cs_new_protected_nopar:Npn \__wstf_column_penalties:
+ {
+ \bool_if:NF \l__wstf_hang_bool
+ {
+ \bool_if:NT \l__wstf_column_bool
+ { \__wstf_column_penalties_aux: }
+ }
+ }
+\cs_new_protected_nopar:Npn \__wstf_column_penalties_aux:
+ {
+ \tex_interlinepenalties:D
+ \int_eval:n { \l__wstf_window_int / 2 + \c_one_int } ~
+ \prg_replicate:nn
+ { \l__wstf_window_int / 2 - \c_one_int }
+ { \c__wstf_nobreak_int }
+ \c__wstf_break_int
+ \c_zero_int
+ }
+\cs_new_protected_nopar:Npn \__wstf_build_block:
+ {
+ \__wstf_build_block_auxi:
+ \vbox_set:Nn \l__wstf_window_box
+ {
+ \__wstf_tex_parameter:
+ \dim_set_eq:NN \tex_hsize:D \l__wstf_line_dim
+ \para_raw_noindent:
+ \hbox_unpack_drop:N \g__wstf_line_box
+ \para_raw_end:
+ }
+ \bool_if:NT \l__wstf_attach_equation_bool
+ {
+ \box_set_ht:Nn \l__wstf_window_box
+ { \box_ht_plus_dp:N \l__wstf_window_box - \g__wstf_dp_dim }
+ \box_set_dp:Nn \l__wstf_window_box { \g__wstf_dp_dim }
+ }
+ }
+\cs_new_protected_nopar:Npn \__wstf_build_block_auxi:
+ {
+ \vbox_set:Nn \l__wstf_body_box
+ {
+ \vbox_unpack_drop:N \l__wstf_body_box
+ \bool_lazy_and:nnTF
+ { \box_if_empty_p:N \l__wstf_bottom_box }
+ { \int_if_odd_p:n { \g__wstf_line_int } }
+ { \box_set_eq:NN \l__wstf_r_box \l__wstf_empty_box }
+ {
+ \box_set_to_last:N \l__wstf_r_box
+ \tex_unskip:D \tex_unpenalty:D
+ }
+ \box_set_to_last:N \l__wstf_l_box
+ \tex_unskip:D \tex_unpenalty:D
+ \hbox_gset:Nn \g__wstf_line_box
+ {
+ \bool_if:NT \l__wstf_attach_equation_bool
+ { \__wstf_build_block_attach: }
+ \box_use:N \l__wstf_l_box
+ \tex_hfill:D
+ \box_use:N \l__wstf_r_box
+ }
+ \__wstf_build_block_auxii:
+ }
+ }
+\cs_new_protected_nopar:Npn \__wstf_build_block_auxii:
+ {
+ \int_case:nnTF
+ { \tex_lastnodetype:D }
+ {
+ { \c__wstf_none_node } { }
+ { \c__wstf_whatsit_node } { }
+ }
+ { \__wstf_build_block_finalise: }
+ { \__wstf_build_block_auxiii: }
+ }
+\cs_new_protected_nopar:Npn \__wstf_build_block_auxiii:
+ {
+ \box_set_to_last:N \l__wstf_r_box
+ \tex_unskip:D \tex_unpenalty:D
+ \box_set_to_last:N \l__wstf_l_box
+ \tex_unskip:D \tex_unpenalty:D
+ \hbox_gset:Nn \g__wstf_line_box
+ {
+ \box_use:N \l__wstf_l_box
+ \tex_hfill:D
+ \box_use:N \l__wstf_r_box
+ \tex_penalty:D \c__wstf_break_int
+ \hbox_unpack_drop:N \g__wstf_line_box
+ }
+ \__wstf_build_block_auxii:
+ }
+\cs_new_protected_nopar:Npn \__wstf_build_block_attach:
+ {
+ \box_set_eq:NN \l__wstf_last_box \l__wstf_l_box
+ \__wstf_attach_equation:N \l__wstf_last_box
+ \dim_gset:Nn \g__wstf_dp_dim { \box_dp:N \l__wstf_last_box }
+ \hbox_set:Nn \l__wstf_l_box
+ {
+ \box_move_down:nn
+ { \box_ht:N \l__wstf_last_box - \box_ht:N \l__wstf_l_box }
+ { \box_use_drop:N \l__wstf_last_box }
+ }
+ }
+\cs_new_protected_nopar:Npn \__wstf_build_block_finalise:
+ {
+ \dim_gset:Nn \g__wstf_ht_dim
+ {
+ \dim_max:nn
+ { \box_ht:N \l__wstf_l_box }
+ { \box_ht:N \l__wstf_r_box }
+ }
+ }
+\dim_new:N \g__wstf_dp_dim
+\dim_new:N \g__wstf_ht_dim
+\box_new:N \l__wstf_l_box
+\box_new:N \l__wstf_r_box
+\box_new:N \g__wstf_line_box
+\box_new:N \l__wstf_empty_box
+\hbox_set:Nn \l__wstf_empty_box { }
+\int_const:Nn \c__wstf_break_int { -10000 }
+\int_const:Nn \c__wstf_nobreak_int { 10000 }
+\cs_new_protected_nopar:Npn \__wstf_build_column_fuzzy:
+ {
+ \hbox_set_to_wd:Nnn \l__wstf_window_box
+ { \l__wstf_line_dim }
+ {
+ \skip_zero:N \tex_splittopskip:D
+ \dim_set_eq:NN \tex_vfuzz:D \c_max_dim
+ \int_set_eq:NN \tex_vbadness:D \c_max_int
+ \__wstf_build_column_aux:
+ \box_if_empty:NT \l__wstf_bottom_box
+ { \__wstf_build_column_fuzzy_aux: }
+ \dim_gset:Nn \g__wstf_ht_dim { \box_ht:N \l__wstf_l_box }
+ \vbox_set:Nn \l__wstf_l_box
+ {
+ \vbox_unpack_drop:N \l__wstf_l_box
+ \bool_if:NT \l__wstf_attach_equation_bool
+ {
+ \box_set_to_last:N \l__wstf_last_box
+ \__wstf_attach_equation:N \l__wstf_last_box
+ \vbox_unpack_drop:N \l__wstf_last_box
+ }
+ }
+ \box_use:N \l__wstf_l_box
+ \tex_hfil:D
+ \box_move_up:nn
+ { \box_ht:N \l__wstf_l_box - \box_ht:N \l__wstf_r_box }
+ { \box_use_drop:N \l__wstf_r_box }
+ }
+ }
+\cs_new_protected_nopar:Npn \__wstf_build_column_aux:
+ {
+ \vbox_set_split_to_ht:NNn \l__wstf_l_box \l__wstf_body_box
+ { \c_zero_dim }
+ \vbox_set_top:Nn \l__wstf_l_box
+ { \vbox_unpack_drop:N \l__wstf_l_box }
+ \box_set_eq_drop:NN \l__wstf_r_box \l__wstf_body_box
+ }
+\cs_new_protected_nopar:Npn \__wstf_build_column_fuzzy_aux:
+ {
+ \dim_compare:nNnTF
+ {
+ \box_ht_plus_dp:N \l__wstf_r_box -
+ \box_ht_plus_dp:N \l__wstf_l_box
+ }
+ >
+ { \l__wstf_min_dim }
+ {
+ \box_if_empty:NF \l__wstf_last_l_box
+ {
+ \box_set_eq_drop:NN \l__wstf_l_box \l__wstf_last_l_box
+ \box_set_eq_drop:NN \l__wstf_r_box \l__wstf_last_r_box
+ }
+ }
+ { \__wstf_rebuild_window: }
+ }
+\cs_new_protected_nopar:Npn \__wstf_rebuild_window:
+ {
+ \int_compare:nNnT \l__wstf_window_int > { 2 }
+ {
+ \int_sub:Nn \l__wstf_window_int { 2 }
+ \box_set_eq_drop:NN \l__wstf_last_l_box \l__wstf_l_box
+ \box_set_eq_drop:NN \l__wstf_last_r_box \l__wstf_r_box
+ \box_set_eq:NN \l__wstf_bottom_box \l__wstf_save_body_box
+ \int_set_eq:NN \l__wstf_window_line_int \l__wstf_window_int
+ \__wstf_build_window:
+ \__wstf_build_column_aux:
+ \__wstf_build_column_fuzzy_aux:
+ }
+ }
+\cs_new_protected_nopar:Npn \__wstf_build_column_strict:
+ {
+ \group_begin:
+ \skip_zero:N \tex_splittopskip:D
+ \dim_set_eq:NN \tex_vfuzz:D \c_max_dim
+ \int_set_eq:NN \tex_vbadness:D \c_max_int
+ \__wstf_build_column_aux:
+ \box_if_empty:NTF \l__wstf_r_box
+ { \__wstf_build_column_strict_auxi: }
+ {
+ \box_if_empty:NTF \l__wstf_bottom_box
+ { \__wstf_build_column_strict_auxii: }
+ {
+ \bool_if:NTF \g__wstf_column_right_bool
+ { \__wstf_build_column_strict_auxiii: }
+ { \__wstf_build_column_strict_auxiv: }
+ }
+ }
+ \group_end:
+ \box_set_eq_drop:NN \l__wstf_window_box \g__wstf_window_box
+ }
+\cs_new_protected_nopar:Npn \__wstf_build_column_strict_auxi:
+ {
+ \__wstf_repack_left_box:
+ \bool_if:NT \l__wstf_attach_equation_bool
+ { \__wstf_column_attach:N \l__wstf_l_box }
+ \box_gset_eq_drop:NN \g__wstf_window_box \l__wstf_l_box
+ \bool_gset_true:N \g__wstf_column_right_bool
+ \bool_if:NF \g__wstf_first_save_bool
+ {
+ \bool_gset_true:N \g__wstf_first_save_bool
+ \dim_gset:Nn \g__wstf_first_sep_dim
+ { \tex_baselineskip:D - \g__wstf_ht_dim }
+ \dim_gset_eq:NN \g__wstf_first_dp_dim \g__wstf_prevdepth_dim
+ }
+ \int_case:nnT { \g__wstf_window_int }
+ {
+ { \c_zero_int } { }
+ { \g__wstf_line_int } { }
+ }
+ { \__wstf_column_move_entire_aux: }
+ }
+\cs_new_protected_nopar:Npn \__wstf_column_move_entire_aux:
+ {
+ \bool_gset_true:N \g__wstf_entire_bool
+ \bool_gset_true:N \g__wstf_next_hang_bool
+ }
+\cs_new_protected_nopar:Npn \__wstf_column_move_entire:
+ {
+ \dim_gsub:Nn \g__wstf_first_sep_dim
+ { \box_dp:N \l__wstf_window_box }
+ \bool_gset_false:N \g__wstf_entire_bool
+ \dim_gzero:N \g__wstf_column_right_ht_dim
+ \dim_gset_eq:NN \g__wstf_prevdepth_dim \g__wstf_first_dp_dim
+ \__wstf_column_right_move_set:nn
+ { \g__wstf_stuff_ht_dim }
+ { \g__wstf_window_ht_dim }
+ \int_gset_eq:NN \g__wstf_window_int \g__wstf_column_window_int
+ }
+\cs_new_protected:Npn \__wstf_column_right_move_set:nn #1#2
+ {
+ \bool_gset_true:N \g__wstf_right_move_bool
+ \bool_gset_true:N \g__wstf_first_set_bool
+ \tl_gput_right:Nn \g__wstf_main_setting_tl
+ {
+ \bool_if:NTF \g__wstf_first_set_bool
+ {
+ \bool_gset_false:N \g__wstf_first_set_bool
+ \bool_set_true:N \l__wstf_first_move_bool
+ }
+ { \bool_set_false:N \l__wstf_first_move_bool }
+ \fp_zero:N \l__wstf_ratio_fp
+ }
+ \__wstf_make_next_stuff:nn
+ { \l__wstf_line_dim - \l__wstf_r_dim - \l__wstf_rightsep_dim }
+ {#1}
+ \dim_gset:Nn \g__wstf_column_left_dim {#2}
+ \int_gzero:N \g__wstf_top_int
+ }
+\cs_new_protected_nopar:Npn \__wstf_build_column_strict_auxii:
+ {
+ \bool_gset_false:N \g__wstf_entire_bool
+ \__wstf_repack_left_box:
+ \bool_if:NT \l__wstf_attach_equation_bool
+ { \__wstf_column_attach:N \l__wstf_r_box }
+ \dim_gset:Nn \g__wstf_hang_ht_dim
+ {
+ \g__wstf_stuff_ht_dim - \tex_baselineskip:D *
+ \__wstf_unit:n { \box_ht_plus_dp:N \l__wstf_r_box }
+ - \g__wstf_pos_skip
+ }
+ \dim_compare:nNnTF \g__wstf_hang_ht_dim > \c_zero_dim
+ { \__wstf_column_move_right: }
+ { \__wstf_column_put_right: }
+ \box_gset_ht:Nn \g__wstf_window_box { \box_ht:N \l__wstf_l_box }
+ \box_gset_dp:Nn \g__wstf_window_box { \box_dp:N \l__wstf_l_box }
+ }
+\cs_new_protected_nopar:Npn \__wstf_column_move_right:
+ {
+ \int_compare:nNnTF \g__wstf_window_int > \c_zero_int
+ {
+ \dim_gset:Nn \g__wstf_column_left_dim
+ {
+ \g__wstf_window_ht_dim
+ - \g__wstf_first_sep_dim
+ - \box_ht:N \l__wstf_r_box
+ }
+ \__wstf_next_hang_para:
+ }
+ {
+ \dim_gset:Nn \g__wstf_column_left_dim
+ {
+ \box_ht:N \l__wstf_l_box
+ - \box_ht:N \l__wstf_r_box
+ }
+ \dim_gset:Nn \g__wstf_first_sep_dim
+ { \tex_baselineskip:D - \g__wstf_ht_dim }
+ \bool_gset_true:N \g__wstf_right_move_bool
+ \bool_gset_true:N \g__wstf_next_hang_bool
+ }
+ \hbox_gset_to_wd:Nnn \g__wstf_window_box
+ { \l__wstf_line_dim }
+ {
+ \box_use:N \l__wstf_l_box
+ \tex_hfil:D
+ \box_move_up:nn
+ { \g__wstf_column_left_dim }
+ { \box_use:N \l__wstf_r_box }
+ }
+ \dim_gset:Nn \g__wstf_column_right_ht_dim
+ { \box_ht:N \l__wstf_r_box + \g__wstf_pos_skip }
+ }
+\cs_new_protected_nopar:Npn \__wstf_column_put_right:
+ {
+ \hbox_gset_to_wd:Nnn \g__wstf_window_box
+ { \l__wstf_line_dim }
+ {
+ \box_use:N \l__wstf_l_box
+ \tex_hfil:D
+ \box_move_up:nn
+ {
+ \int_compare:nNnTF \g__wstf_window_int > \c_zero_int
+ { \g__wstf_window_ht_dim - \g__wstf_first_sep_dim }
+ { \box_ht:N \l__wstf_l_box }
+ - \box_ht:N \l__wstf_r_box
+ }
+ { \box_use:N \l__wstf_r_box }
+ }
+ \skip_gzero:N \g__wstf_pos_skip
+ }
+\cs_new_protected_nopar:Npn \__wstf_next_hang_para:
+ {
+ \bool_if:NTF \g__wstf_entire_bool
+ { \__wstf_column_move_entire: }
+ {
+ \__wstf_column_right_move_set:nn
+ { \g__wstf_hang_ht_dim }
+ { \g__wstf_column_left_dim }
+ \int_gzero:N \g__wstf_window_int
+ }
+ \bool_gset_false:N \g__wstf_next_hang_bool
+ }
+\cs_new_protected_nopar:Npn \__wstf_build_column_strict_auxiii:
+ {
+ \bool_gset_false:N \g__wstf_column_right_bool
+ \__wstf_repack_left_box:
+ \hbox_gset_to_wd:Nnn \g__wstf_window_box
+ { \l__wstf_line_dim }
+ {
+ \box_use:N \l__wstf_l_box
+ \tex_hfil:D
+ \box_use:N \l__wstf_r_box
+ }
+ \box_gset_ht:Nn \g__wstf_window_box
+ { \box_ht:N \l__wstf_l_box }
+ }
+\cs_new_protected_nopar:Npn \__wstf_build_column_strict_auxiv:
+ {
+ \__wstf_repack_left_box:
+ \hbox_gset_to_wd:Nnn \g__wstf_window_box
+ { \l__wstf_line_dim }
+ {
+ \box_use:N \l__wstf_l_box
+ \tex_hfil:D
+ \box_move_up:nn
+ { \box_ht:N \l__wstf_l_box - \box_ht:N \l__wstf_r_box }
+ { \box_use_drop:N \l__wstf_r_box }
+ }
+ }
+\cs_new_protected_nopar:Npn \__wstf_repack_left_box:
+ {
+ \dim_gset:Nn \g__wstf_ht_dim { \box_ht:N \l__wstf_l_box }
+ \vbox_set:Nn \l__wstf_l_box
+ { \vbox_unpack_drop:N \l__wstf_l_box }
+ }
+\cs_new_protected_nopar:Npn \__wstf_column_attach:N #1
+ {
+ \vbox_set:Nn #1
+ {
+ \vbox_unpack_drop:N #1
+ \box_set_to_last:N \l__wstf_last_box
+ \__wstf_attach_equation:N \l__wstf_last_box
+ \vbox_unpack_drop:N \l__wstf_last_box
+ }
+ }
+\box_new:N \l__wstf_last_l_box
+\box_new:N \l__wstf_last_r_box
+\box_new:N \g__wstf_window_box
+\dim_new:N \g__wstf_fake_wd_dim
+\dim_new:N \g__wstf_first_dp_dim
+\dim_new:N \g__wstf_first_sep_dim
+\dim_new:N \g__wstf_column_left_dim
+\dim_new:N \g__wstf_column_right_ht_dim
+\bool_new:N \g__wstf_entire_bool
+\bool_new:N \g__wstf_next_hang_bool
+\bool_new:N \g__wstf_first_save_bool
+\bool_new:N \g__wstf_column_right_bool
+\bool_new:N \l__wstf_column_strict_bool
+\bool_new:N \g__wstf_first_set_bool
+\bool_new:N \l__wstf_first_move_bool
+\bool_new:N \g__wstf_right_move_bool
+\bool_new:N \l__wstf_column_bool
+\cs_new_eq:NN \__wstf_build_column: \__wstf_build_column_strict:
+\cs_new_eq:NN \__wstf_build_box: \__wstf_build_column:
+\cs_new_protected_nopar:Npn \__wstf_build_hang:
+ {
+ \bool_if:NTF \g__wstf_hangfrom_bool
+ { \__wstf_build_hangfrom: }
+ {
+ \vbox_set_top:Nn \l__wstf_window_box
+ { \vbox_unpack:N \l__wstf_body_box }
+ \dim_gset:Nn \g__wstf_ht_dim { \box_ht:N \l__wstf_window_box }
+ }
+ \bool_if:NTF \l__wstf_attach_equation_bool
+ {
+ \vbox_set:Nn \l__wstf_window_box
+ {
+ \vbox_unpack_drop:N \l__wstf_window_box
+ \box_set_to_last:N \l__wstf_last_box
+ \__wstf_attach_equation:N \l__wstf_last_box
+ \vbox_unpack_drop:N \l__wstf_last_box
+ }
+ }
+ { \box_set_eq_drop:NN \l__wstf_window_box \l__wstf_body_box }
+ \dim_compare:nNnTF \g__wstf_column_left_dim > \c_zero_dim
+ { \__wstf_build_hang_aux: }
+ { \bool_gset_false:N \g__wstf_move_hang_bool }
+ }
+\cs_new_protected_nopar:Npn \__wstf_build_hang_aux:
+ {
+ \dim_set:Nn \l__wstf_shift_dim
+ {
+ \dim_max:nn
+ { \box_ht:N \l__wstf_window_box }
+ { \tex_baselineskip:D * \g__wstf_line_int }
+ + \tex_parskip:D
+ }
+ \dim_gsub:Nn \g__wstf_column_left_dim { \l__wstf_shift_dim }
+ \dim_compare:nNnTF \g__wstf_column_left_dim > \c_zero_dim
+ {
+ \box_if_empty:NTF \l__wstf_bottom_box
+ { \bool_if:NT \g__wstf_right_move_bool { \__wstf_set_next_hang: } }
+ { \bool_gset_false:N \g__wstf_move_hang_bool }
+ }
+ { \bool_gset_false:N \g__wstf_move_hang_bool }
+ }
+\cs_new_protected_nopar:Npn \__wstf_set_next_hang:
+ {
+ \bool_if:NF \g__wstf_move_hang_bool
+ {
+ \bool_gset_true:N \g__wstf_move_hang_bool
+ \dim_gset_eq:NN \g__wstf_hang_ht_dim \g__wstf_remaining_dim
+ }
+ \dim_gsub:Nn \g__wstf_hang_ht_dim { \l__wstf_shift_dim }
+ \dim_gset:Nn \g__wstf_dp_dim { \box_dp:N \l__wstf_window_box }
+ \__wstf_column_right_move_set:nn
+ { \g__wstf_hang_ht_dim }
+ { \g__wstf_column_left_dim }
+ \int_gzero:N \g__wstf_window_int
+ }
+\dim_new:N \g__wstf_hang_ht_dim
+\bool_new:N \g__wstf_move_hang_bool
+\cs_new_protected_nopar:Npn \__wstf_build_hangfrom:
+ {
+ \dim_compare:nNnTF \g__wstf_prevdepth_dim > \c__wstf_ignore_depth_dim
+ { \__wstf_build_hangfrom_aux: }
+ { \dim_gzero:N \g__wstf_ht_dim }
+ }
+\cs_new_protected_nopar:Npn \__wstf_build_hangfrom_aux:
+ {
+ \group_begin:
+ \skip_zero:N \tex_splittopskip:D
+ \vbox_gset:Nn \g__wstf_line_box
+ {
+ \tex_penalty:D \c__wstf_break_int
+ \vbox_unpack:N \l__wstf_body_box
+ }
+ \vbox_set_split_to_ht:NNn \l__wstf_last_box \g__wstf_line_box
+ { \c_zero_dim }
+ \dim_gset:Nn \g__wstf_ht_dim
+ {
+ \g__wstf_baseline_skip
+ - \g__wstf_prevdepth_dim
+ - \l__wstf_shift_dim
+ - \box_ht:N \l__wstf_body_box
+ + \box_ht:N \g__wstf_line_box
+ }
+ \group_end:
+ \box_set_eq_drop:NN \l__wstf_body_box \g__wstf_line_box
+ }
+\cs_new_protected_nopar:Npn \__wstf_put_box:
+ {
+ \para_raw_end:
+ \dim_compare:nNnTF \g__wstf_prevdepth_dim > \c__wstf_ignore_depth_dim
+ { \__wstf_add_vskip: }
+ { \skip_gzero:N \g__wstf_pre_skip }
+ \skip_set_eq:NN \l__wstf_par_skip \tex_parskip:D
+ \skip_zero:N \tex_parskip:D
+ \bool_if:NTF \g__wstf_right_move_bool
+ { \__wstf_put_box_aux: }
+ {
+ \box_if_empty:NTF \l__wstf_bottom_box
+ {
+ \dim_compare:nNnTF
+ { \g__wstf_remaining_dim }
+ >
+ { \box_ht_plus_dp:N \l__wstf_window_box }
+ { \__wstf_set_next: }
+ { \__wstf_put_box_aux: }
+ }
+ { \__wstf_put_box_aux: }
+ }
+ }
+\skip_new:N \l__wstf_par_skip
+\cs_new_protected_nopar:Npn \__wstf_put_box_aux:
+ {
+ \int_gzero:N \g__wstf_window_int
+ \__wstf_hbox:n
+ {
+ \__wstf_put_window_box:
+ \bool_if:NF \g__wstf_next_bool
+ { \__wstf_put_stuff_box: }
+ }
+ \box_if_empty:NTF \l__wstf_bottom_box
+ { \__wstf_put_trailer_box: }
+ { \__wstf_put_bottom_box: }
+ }
+\cs_new_protected_nopar:Npn \__wstf_put_trailer_box:
+ {
+ \bool_if:NTF \g__wstf_next_hang_bool
+ {
+ \__wstf_next_hang_para:
+ \__wstf_next_para_trailer:
+ }
+ {
+ \bool_if:NTF \g__wstf_right_move_bool
+ { \__wstf_next_para_trailer: }
+ {
+ \__wstf_add_pos_skip:
+ \box_if_empty:NF \g__wstf_pos_box
+ {
+ \__wstf_newline:
+ \hbox_unpack_drop:N \g__wstf_pos_box
+ }
+ }
+ }
+ }
+\cs_new_protected_nopar:Npn \__wstf_put_bottom_box:
+ {
+ \__wstf_newline:
+ \hbox_unpack_drop:N \l__wstf_bottom_box
+ \box_if_empty:NF \g__wstf_equation_box
+ { \__wstf_insert_equation: }
+ \box_if_empty:NF \g__wstf_pos_box
+ { \hbox_unpack_drop:N \g__wstf_pos_box }
+ \bool_gset_false:N \g__wstf_right_move_bool
+ \bool_gset_false:N \g__wstf_first_save_bool
+ }
+\cs_new_protected_nopar:Npn \__wstf_newline:
+ {
+ \tex_penalty:D \c__wstf_nobreak_int
+ \tex_hfil:D
+ \tex_penalty:D \c__wstf_break_int
+ }
+\cs_new_protected:Npn \__wstf_hbox:n #1
+ {
+ \para_raw_noindent:
+ \hbox_gset:Nn \g__wstf_last_box {#1}
+ \box_gset_wd:Nn \g__wstf_last_box { \l__wstf_line_dim }
+ \box_use_drop:N \g__wstf_last_box
+ }
+\cs_new_protected_nopar:Npn \__wstf_put_window_box:
+ {
+ \dim_compare:nNnF \l__wstf_l_dim > \c_zero_dim
+ { \skip_horizontal:n { \l__wstf_line_dim - \l__wstf_r_dim } }
+ \box_use:N \l__wstf_window_box
+ }
+\cs_new_protected_nopar:Npn \__wstf_put_stuff_box:
+ {
+ \__wstf_move_stuff_box:nn { up }
+ {
+ \l__wstf_voffset_dim
+ + ( \box_dp:N \g__wstf_stuff_box -
+ \box_dp:N \l__wstf_window_box )
+ + ( \box_ht_plus_dp:N \l__wstf_window_box -
+ \g__wstf_stuff_ht_dim ) / 2
+ \box_if_empty:NT \l__wstf_bottom_box
+ { - \g__wstf_pos_skip / 2 }
+ }
+ \__wstf_output_stuff_box:
+ }
+\cs_new_protected_nopar:Npn \__wstf_output_stuff_box:
+ {
+ \skip_horizontal:n
+ {
+ \dim_compare:nNnTF \l__wstf_r_dim > \c_zero_dim
+ {
+ \dim_compare:nNnTF
+ { \box_wd:N \l__wstf_window_box }
+ <
+ { \l__wstf_window_dim }
+ { \l__wstf_leftsep_dim }
+ {
+ - \l__wstf_r_dim
+ - \l__wstf_rightsep_dim
+ - \g__wstf_stuff_wd_dim
+ }
+ }
+ { \l__wstf_leftsep_dim }
+ }
+ \box_use_drop:N \g__wstf_stuff_box
+ }
+\cs_new_protected:Npn \__wstf_move_stuff_box:nn #1#2
+ {
+ \hbox_gset:Nn \g__wstf_stuff_box
+ {
+ \__wstf_parshape_kern:
+ \use:c { box_move_ #1 :nn }
+ {#2}
+ { \box_use_drop:N \g__wstf_stuff_box }
+ }
+ \box_gset_ht:Nn \g__wstf_stuff_box { \c_zero_dim }
+ \box_gset_dp:Nn \g__wstf_stuff_box { \c_zero_dim }
+ }
+\cs_new_protected_nopar:Npn \__wstf_add_vskip:
+ {
+ \box_if_empty:NTF \g__wstf_display_box
+ { \__wstf_add_vskip_auxi: }
+ { \__wstf_add_vskip_display: }
+ }
+\cs_new_protected_nopar:Npn \__wstf_add_vskip_display:
+ {
+ \vbox_unpack_drop:N \g__wstf_display_box
+ \__wstf_ignore_depth:
+ }
+\cs_new_protected_nopar:Npn \__wstf_add_vskip_auxi:
+ {
+ \dim_compare:nNnTF \tex_pagegoal:D < \c_max_dim
+ { \__wstf_add_vskip_auxii: }
+ { \__wstf_add_vskip_auxiii: }
+ }
+\cs_new_protected_nopar:Npn \__wstf_add_vskip_auxii:
+ {
+ \skip_gset:Nn \g__wstf_pre_skip
+ {
+ \g__wstf_baseline_skip
+ - \g__wstf_prevdepth_dim
+ - \g__wstf_ht_dim
+ }
+ \dim_compare:nNnT \g__wstf_pre_skip < \tex_lineskiplimit:D
+ { \skip_gset_eq:NN \g__wstf_pre_skip \tex_lineskip:D }
+ \bool_if:NTF \l__wstf_first_move_bool
+ { \__wstf_first_move_skip: }
+ { \skip_vertical:N \g__wstf_pre_skip }
+ \__wstf_ignore_depth:
+ }
+\cs_new_protected_nopar:Npn \__wstf_add_vskip_auxiii:
+ {
+ \dim_compare:nNnTF \tex_topskip:D > \g__wstf_ht_dim
+ {
+ \tex_hrule:D height \c_zero_dim \scan_stop:
+ \skip_gset:Nn \g__wstf_pre_skip
+ { \tex_topskip:D - \g__wstf_ht_dim }
+ \skip_vertical:n { \g__wstf_pre_skip - \tex_topskip:D }
+ }
+ { \skip_gzero:N \g__wstf_pre_skip }
+ }
+\cs_new_protected_nopar:Npn \__wstf_first_move_skip:
+ {
+ \skip_vertical:n
+ {
+ \g__wstf_first_sep_dim
+ - \g__wstf_window_ht_dim
+ - \tex_parskip:D
+ \dim_compare:nNnT \g__wstf_column_right_ht_dim > \c_zero_dim
+ { + \g__wstf_column_right_ht_dim + \g__wstf_pre_skip }
+ }
+ }
+\skip_new:N \g__wstf_pre_skip
+\cs_new_protected_nopar:Npn \__wstf_ignore_depth:
+ { \dim_set_eq:NN \tex_prevdepth:D \c__wstf_ignore_depth_dim }
+\cs_new_protected_nopar:Npn \__wstf_set_prevdepth:N
+ { \dim_set_eq:NN \tex_prevdepth:D }
+\dim_const:Nn \c__wstf_ignore_depth_dim { -1000pt }
+\cs_new_protected_nopar:Npn \__wstf_set_next:
+ {
+ \dim_set:Nn \l__wstf_height_dim
+ {
+ \g__wstf_pre_skip
+ + \g__wstf_pos_skip
+ + \box_ht_plus_dp:N \l__wstf_window_box
+ }
+ \dim_gadd:Nn \g__wstf_total_ht_dim { \l__wstf_height_dim }
+ \dim_set:Nn \l__wstf_shift_dim
+ { \g__wstf_remaining_dim - \l__wstf_height_dim }
+ \dim_compare:nNnTF \l__wstf_shift_dim > \c_zero_dim
+ { \__wstf_set_next_auxi: }
+ {
+ \dim_compare:nNnTF
+ { - \l__wstf_shift_dim } > \l__wstf_min_dim
+ { \__wstf_set_next_auxii: }
+ { \__wstf_set_next_auxi: }
+ }
+ }
+\dim_new:N \g__wstf_total_ht_dim
+\cs_new_protected_nopar:Npn \__wstf_set_next_auxi:
+ {
+ \int_gset:Nn \g__wstf_window_int
+ {
+ \dim_compare:nNnTF \l__wstf_shift_dim > \c_zero_dim
+ { \__wstf_unit:n { \l__wstf_shift_dim } }
+ { \c_one_int }
+ }
+ \__wstf_set_next_verify:
+ \bool_if:NF \g__wstf_next_bool
+ { \__wstf_move_next_stuff_box: }
+ \__wstf_set_next_output:
+ \__wstf_make_next_stuff:nn
+ { \g__wstf_stuff_wd_dim }
+ { \l__wstf_shift_dim }
+ \int_gzero:N \g__wstf_top_int
+ \__wstf_next_para_trailer:
+ }
+\cs_new_protected_nopar:Npn \__wstf_move_next_stuff_box:
+ {
+ \__wstf_move_stuff_box:nn { down }
+ {
+ \box_ht:N \g__wstf_stuff_box
+ - \box_ht:N \l__wstf_window_box
+ + ( \g__wstf_window_ht_dim
+ - \g__wstf_stuff_ht_dim
+ - \g__wstf_pre_skip
+ + \g__wstf_pos_skip
+ + \l__wstf_par_skip ) / 2
+ - \l__wstf_voffset_dim
+ }
+ }
+\cs_new_protected_nopar:Npn \__wstf_set_next_auxii:
+ {
+ \int_gzero:N \g__wstf_window_int
+ \bool_if:NF \g__wstf_next_bool
+ {
+ \__wstf_move_stuff_box:nn { down }
+ {
+ \box_ht:N \g__wstf_stuff_box
+ - \box_ht:N \l__wstf_window_box
+ - \l__wstf_voffset_dim
+ }
+ }
+ \__wstf_set_next_output:
+ \__wstf_add_pos_skip:
+ }
+\cs_new_protected_nopar:Npn \__wstf_set_next_output:
+ {
+ \__wstf_hbox:n
+ {
+ \__wstf_put_window_box:
+ \bool_if:NF \g__wstf_next_bool
+ { \__wstf_output_stuff_box: }
+ }
+ }
+\cs_new_protected_nopar:Npn \__wstf_set_next_verify:
+ {
+ \dim_set:Nn \l__wstf_height_dim
+ { \g__wstf_window_ht_dim - \g__wstf_total_ht_dim }
+ \dim_until_do:nNnn
+ { \tex_baselineskip:D * \g__wstf_window_int + \l__wstf_par_skip }
+ >
+ { \l__wstf_height_dim }
+ { \int_gincr:N \g__wstf_window_int }
+ \dim_gadd:Nn \g__wstf_total_ht_dim
+ { \tex_baselineskip:D * \g__wstf_window_int + \l__wstf_par_skip }
+ }
+\cs_new_protected_nopar:Npn \__wstf_next_para_trailer:
+ {
+ \__wstf_add_pos_skip:
+ \box_if_empty:NTF \g__wstf_pos_box
+ { \__wstf_next_para: }
+ {
+ \__wstf_env_begin:
+ \hbox_unpack_drop:N \g__wstf_pos_box
+ \__wstf_env_end:
+ }
+ }
+\cs_new_protected:Npn \__wstf_make_next_stuff:nn #1#2
+ {
+ \bool_gset_true:N \g__wstf_next_bool
+ \dim_gset:Nn \g__wstf_stuff_wd_dim {#1}
+ \dim_gset:Nn \g__wstf_remaining_dim {#2}
+ }
+\bool_new:N \g__wstf_next_bool
+\cs_new_protected:Npn \__wstf_extract_display_hbox:NN #1
+ {
+ \box_gclear:N \g__wstf_pos_box
+ \vbox_set:Nn #1
+ {
+ \vbox_unpack_drop:N #1
+ \bool_if:NTF \g__wstf_display_bool
+ { \__wstf_test_display_math: }
+ { \box_gclear:N \g__wstf_display_box }
+ \box_if_empty:NTF \g__wstf_display_box
+ {
+ \bool_gset_false:N \g__wstf_amsmath_bool
+ \__wstf_extract_last_hbox:N \g__wstf_last_box
+ }
+ { \box_gclear:N \g__wstf_last_box }
+ }
+ \box_if_empty:NF \g__wstf_display_box
+ { \dim_gset:Nn \g__wstf_display_pre_dim { \box_dp:N #1 } }
+ \__wstf_extract_hbox_aux:N
+ }
+\cs_new_protected:Npn \__wstf_extract_hbox:NN #1
+ {
+ \vbox_set:Nn #1
+ {
+ \vbox_unpack_drop:N #1
+ \__wstf_extract_last_hbox:N \g__wstf_last_box
+ }
+ \__wstf_extract_hbox_aux:N
+ }
+\cs_new_protected:Npn \__wstf_extract_hbox_aux:N #1
+ {
+ \box_if_empty:NTF \g__wstf_last_box
+ { \box_clear:N #1 }
+ { \__wstf_repack_hbox:N #1 }
+ }
+\cs_new_protected:Npn \__wstf_repack_hbox:N #1
+ {
+ \hbox_set:Nn #1
+ {
+ \skip_if_eq:nnF
+ { \g__wstf_main_left_skip } { \c_zero_skip }
+ { \skip_horizontal:N \g__wstf_main_left_skip }
+ \hbox_unpack_drop:N \g__wstf_last_box
+ \tex_unskip:D \tex_unskip:D \tex_unpenalty:D
+ }
+ }
+\cs_new_protected:Npn \__wstf_extract_last_hbox:N #1
+ {
+ \__wstf_if_last_hlist:TF
+ {
+ \box_gset_to_last:N #1
+ \tex_unskip:D
+ }
+ { \box_gclear:N #1 }
+ }
+\box_new:N \g__wstf_last_box
+\box_new:N \g__wstf_display_box
+\dim_new:N \g__wstf_display_pre_dim
+\cs_new_protected_nopar:Npn \__wstf_test_display_math:
+ {
+ \__wstf_if_last_hlist:T
+ {
+ \box_gset_to_last:N \g__wstf_pos_box
+ \tex_unskip:D
+ }
+ \box_clear:N \l__wstf_add_box
+ \box_gclear:N \g__wstf_display_box
+ \skip_gzero:N \g__wstf_last_skip
+ \skip_gzero:N \g__wstf_display_pre_skip
+ \bool_gset_false:N \g__wstf_amsmath_bool
+ \__wstf_add_last_skip:w
+ \__wstf_add_last_penalty:w
+ \__wstf_add_last_box:w
+ \__wstf_add_last_skip:w
+ \__wstf_add_last_skip:w
+ \__wstf_add_last_penalty:w
+ \__wstf_add_last_finalise:w \q_stop
+ }
+\box_new:N \l__wstf_add_box
+\box_new:N \g__wstf_pos_box
+\cs_new_protected_nopar:Npn \__wstf_add_last_stop:w
+ {
+ \vbox_unpack_drop:N \l__wstf_add_box
+ \use_none_delimit_by_q_stop:w
+ }
+\cs_new_protected_nopar:Npn \__wstf_add_last_skip:w
+ {
+ \__wstf_if_last_glue:TF
+ {
+ \skip_set_eq:NN \l__wstf_last_skip \tex_lastskip:D
+ \vbox_set:Nn \l__wstf_add_box
+ {
+ \skip_vertical:N \l__wstf_last_skip
+ \vbox_unpack_drop:N \l__wstf_add_box
+ }
+ \tex_unskip:D
+ \skip_gadd:Nn \g__wstf_last_skip { \l__wstf_last_skip }
+ }
+ { \__wstf_skip_stop:w }
+ }
+\skip_new:N \l__wstf_last_skip
+\skip_new:N \g__wstf_last_skip
+\cs_new_eq:NN \__wstf_skip_stop:w \__wstf_add_last_stop:w
+\cs_new_protected_nopar:Npn \__wstf_add_last_penalty:w
+ {
+ \__wstf_if_last_penalty:TF
+ {
+ \int_set_eq:NN \l__wstf_last_int \tex_lastpenalty:D
+ \vbox_set:Nn \l__wstf_add_box
+ {
+ \tex_penalty:D \l__wstf_last_int
+ \vbox_unpack_drop:N \l__wstf_add_box
+ }
+ \tex_unpenalty:D
+ \skip_gset_eq:NN \g__wstf_pre_skip \g__wstf_last_skip
+ \skip_gzero:N \g__wstf_last_skip
+ }
+ { \__wstf_penalty_stop:w }
+ }
+\int_new:N \l__wstf_last_int
+\cs_new_eq:NN \__wstf_penalty_stop:w \__wstf_add_last_stop:w
+\cs_new_protected_nopar:Npn \__wstf_add_last_box:w
+ {
+ \__wstf_if_last_hlist:TF
+ {
+ \skip_gzero:N \g__wstf_last_skip
+ \box_set_to_last:N \l__wstf_last_box
+ \vbox_set:Nn \l__wstf_add_box
+ {
+ \box_use_drop:N \l__wstf_last_box
+ \vbox_unpack_drop:N \l__wstf_add_box
+ }
+ }
+ { \__wstf_box_stop:w }
+ }
+\box_new:N \l__wstf_last_box
+\cs_new_eq:NN \__wstf_box_stop:w \__wstf_add_last_stop:w
+\cs_new_protected_nopar:Npn \__wstf_add_last_finalise:w
+ {
+ \int_gset_eq:NN \g__wstf_display_pre_int \l__wstf_last_int
+ \skip_gadd:Nn \g__wstf_display_pre_skip { \g__wstf_pre_skip }
+ \int_case:nnTF { \tex_lastnodetype:D }
+ {
+ { \c__wstf_hlist_node } { }
+ { \c__wstf_none_node } { }
+ { \c__wstf_whatsit_node } { }
+ }
+ { \box_gset_eq_drop:NN \g__wstf_display_box \l__wstf_add_box }
+ { \vbox_unpack_drop:N \l__wstf_add_box }
+ \use_none_delimit_by_q_stop:w
+ }
+\int_new:N \g__wstf_display_pre_int
+\skip_new:N \g__wstf_display_pre_skip
+\cs_new_protected_nopar:Npn \__wstf_amsmath_boot:w
+ {
+ \__wstf_add_last_skip:w
+ \__wstf_add_last_penalty:w
+ \cs_set_eq:NN \__wstf_box_stop:w \__wstf_add_last_stop:w
+ \__wstf_add_last_box:w
+ \bool_gset_true:N \g__wstf_amsmath_bool
+ \cs_set_eq:NN \__wstf_skip_stop:w \__wstf_amsmath_multline:w
+ \cs_set_eq:NN \__wstf_penalty_stop:w \__wstf_amsmath_stop:NN
+ \__wstf_amsmath_recursion:w
+ }
+\cs_new_protected_nopar:Npn \__wstf_amsmath_recursion:w
+ {
+ \__wstf_add_last_skip:w
+ \__wstf_add_last_skip:w
+ \__wstf_add_last_penalty:w
+ \__wstf_add_last_box:w
+ \__wstf_amsmath_recursion:w
+ }
+\cs_new_protected:Npn \__wstf_amsmath_stop:NN #1#2
+ {
+ \cs_set_eq:NN \__wstf_skip_stop:w \__wstf_add_last_stop:w
+ \cs_set_eq:NN \__wstf_penalty_stop:w \__wstf_add_last_stop:w
+ }
+\bool_new:N \g__wstf_amsmath_bool
+\cs_new_protected_nopar:Npn \__wstf_amsmath_multline:w
+ {
+ \__wstf_amsmath_stop:NN ? ?
+ \__wstf_add_last_penalty:w
+ \skip_gset_eq:NN \g__wstf_display_pre_skip
+ \g__wstf_pre_skip
+ \__wstf_add_last_skip:w
+ \__wstf_add_last_penalty:w
+ \__wstf_add_last_finalise:w
+ }
+\cs_new_protected_nopar:Npn \__wstf_amsmath_leqno:
+ {
+ \legacy_if:nTF { tagsleft@ }
+ { \bool_gset_true:N \g__wstf_leqno_bool }
+ { \bool_gset_false:N \g__wstf_leqno_bool }
+ }
+\__wstf_package_hook:nn { amsmath }
+ {
+ \cs_gset_eq:NN \__wstf_box_stop:w
+ \__wstf_amsmath_boot:w
+ \cs_gset_eq:NN \__wstf_test_leqno:
+ \__wstf_amsmath_leqno:
+ }
+\cs_new_protected_nopar:Npn \__wstf_set_float:
+ {
+ \cs_set_eq:NN \@captype \l__wstf_type_tl
+ \__wstf_float_pre_hook:
+ \__wstf_caption_hook:
+ \@floatboxreset
+ }
+\cs_new_eq:NN \__wstf_float_pre_hook: \__wstf_empty:
+\cs_new_eq:NN \__wstf_float_pos_hook: \__wstf_empty:
+\__wstf_package_hook:nn { float }
+ {
+ \bool_new:N \g__wstf_float_pos_bool
+ \cs_gset_protected_nopar:Npn \__wstf_float_pre_hook:
+ { \exp_args:No \__wstf_float_pre_aux:n { \l__wstf_type_tl } }
+ \cs_new_protected:Npn \__wstf_float_pre_aux:n #1
+ {
+ \cs_if_exist_use:cTF { fst@ #1 }
+ {
+ \@float at setevery {#1}
+ \bool_gset_true:N \g__wstf_float_pos_bool
+ }
+ { \bool_gset_false:N \g__wstf_float_pos_bool }
+ }
+ \cs_gset_protected_nopar:Npn \__wstf_float_pos_hook:
+ {
+ \bool_if:NT \g__wstf_float_pos_bool
+ { \exp_args:No \__wstf_float_pos_aux:n { \l__wstf_type_tl } }
+ }
+ \cs_new_protected:Npn \__wstf_float_pos_aux:n #1
+ {
+ \hbox_gset:Nn \g__wstf_stuff_box
+ {
+ \use:c { fst@ #1 }
+ \cs_set_eq:NN \@currbox \g__wstf_stuff_box
+ \vbox_gset:Nn \g__wstf_stuff_box
+ { \box_use_drop:N \g__wstf_stuff_box }
+ \exp_args:Ne \float at makebox
+ { \dim_eval:n { \box_wd:N \g__wstf_stuff_box } }
+ }
+ }
+ }
+\cs_new_eq:NN \__wstf_floatrow_hook: \__wstf_empty:
+\__wstf_package_hook:nn { floatrow }
+ {
+ \cs_gset_protected_nopar:Npn \__wstf_floatrow_hook:
+ {
+ \cs_set_eq:NN \@captype \l__wstf_type_tl
+ \killfloatstyle
+ \FR at redefs
+ \dim_zero:N \FBc at wd
+ \exp_args:Ne \flrow at setlist
+ {
+ { \l__wstf_type_tl }
+ { wrapfloat }
+ { wrap \l__wstf_type_tl }
+ }
+ \FRifFBOX \@@setframe \relax \@@FStrue
+ \hbox_gset:Nw \g__wstf_stuff_box
+ \tl_set:Nx \FBB at wd { \dim_use:N \l__wstf_width_dim }
+ \FB at fs@wd
+ \dim_set:Nn \l__wstf_width_dim { \FBo at wd }
+ }
+ \cs_gset_protected_nopar:Npn \__wstf_float_pre_hook:
+ { \the \FR at everyfloat }
+ \cs_gset_protected_nopar:Npn \__wstf_float_pos_hook:
+ {
+ \legacy_if:nTF { FBbuild }
+ {
+ \cs_set_eq:NN \@currbox \g__wstf_stuff_box
+ \vbox_gset:Nn \g__wstf_stuff_box
+ { \box_use_drop:N \g__wstf_stuff_box }
+ \flrow at FB { \l__wstf_width_dim }
+ }
+ {
+ \cs_undefine:N \flrow at typ@tmpset
+ \box_use_drop:N \g__wstf_stuff_box
+ }
+ \hbox_gset_end:
+ }
+ }
+\cs_new_eq:NN \__wstf_caption_hook: \__wstf_empty:
+\__wstf_package_hook:nn { caption }
+ {
+ \cs_gset_protected_nopar:Npn \__wstf_caption_hook:
+ { \exp_args:No \__wstf_caption_aux:n { \l__wstf_type_tl } }
+ \cs_new_protected:Npn \__wstf_caption_aux:n #1
+ {
+ \caption at settype {#1}
+ \caption at clearmargin
+ \caption at setoptions { wrap #1 }
+ }
+ }
+\keys_define:nn { wrapstuff }
+ {
+ abovesep .tl_set:N = \l__wstf_abovesep_tl ,
+ belowsep .tl_set:N = \l__wstf_belowsep_tl ,
+ leftsep .tl_set:N = \l__wstf_leftsep_tl ,
+ rightsep .tl_set:N = \l__wstf_rightsep_tl ,
+ linewidth .tl_set:N = \l__wstf_linewidth_tl ,
+ lines .tl_set:N = \l__wstf_lines_tl ,
+ width .tl_set:N = \l__wstf_width_tl ,
+ height .tl_set:N = \l__wstf_height_tl ,
+ hoffset .tl_set:N = \l__wstf_hoffset_tl ,
+ voffset .tl_set:N = \l__wstf_voffset_tl ,
+ type .tl_set:N = \l__wstf_type_tl ,
+ ratio .fp_set:N = \l__wstf_ratio_fp ,
+ top .int_set:N = \l__wstf_top_int ,
+ i .code:n = \__wstf_swap_true:N \c_true_bool ,
+ o .code:n = \__wstf_swap_true:N \c_false_bool ,
+ l .code:n = \__wstf_swap_false:N \c_zero_fp ,
+ r .code:n = \__wstf_swap_false:N \c_one_fp ,
+ c .code:n = \__wstf_swap_false:N \c__wstf_c_fp ,
+ column .choice: ,
+ column/true .code:n =
+ {
+ \bool_set_true:N \l__wstf_column_bool
+ \cs_set_eq:NN \__wstf_build_column:
+ \__wstf_build_column_strict:
+ } ,
+ column/par .code:n =
+ {
+ \bool_set_true:N \l__wstf_column_bool
+ \cs_set_eq:NN \__wstf_build_column:
+ \__wstf_build_column_fuzzy:
+ } ,
+ column/false .code:n =
+ { \bool_set_false:N \l__wstf_column_bool } ,
+ hsep .code:n =
+ {
+ \tl_set:Nn \l__wstf_leftsep_tl {#1}
+ \tl_set_eq:NN \l__wstf_rightsep_tl
+ \l__wstf_leftsep_tl
+ } ,
+ vsep .code:n =
+ {
+ \tl_set:Nn \l__wstf_abovesep_tl {#1}
+ \tl_set_eq:NN \l__wstf_belowsep_tl
+ \l__wstf_abovesep_tl
+ } ,
+ unknown .code:n =
+ { \exp_args:No \__wstf_unknown_key:n { \l_keys_key_str } } ,
+ leftsep .groups:n = main ,
+ rightsep .groups:n = main ,
+ hsep .groups:n = main ,
+ linewidth .groups:n = main ,
+ lines .groups:n = main ,
+ column .groups:n = main ,
+ hoffset .groups:n = main ,
+ voffset .groups:n = main ,
+ top .groups:n = stuff ,
+ abovesep .groups:n = stuff ,
+ belowsep .groups:n = stuff ,
+ vsep .groups:n = stuff ,
+ width .groups:n = stuff ,
+ height .groups:n = stuff ,
+ float .groups:n = stuff ,
+ ratio .groups:n = ratio ,
+ l .groups:n = ratio ,
+ r .groups:n = ratio ,
+ c .groups:n = ratio ,
+ i .groups:n = ratio ,
+ o .groups:n = ratio ,
+ column .default:n = true ,
+ column .initial:n = true ,
+ abovesep .initial:n = \c_zero_dim ,
+ belowsep .initial:n = \c_zero_dim ,
+ leftsep .initial:n = 1em ,
+ rightsep .initial:n = 1em ,
+ linewidth .initial:n = \linewidth ,
+ hoffset .initial:n = \c_zero_dim ,
+ voffset .initial:n = \c_zero_dim ,
+ width .initial:n = \c_zero_dim ,
+ height .initial:n = \c_zero_dim ,
+ ratio .initial:n = \c_one_fp ,
+ abovesep .value_required:n = true ,
+ belowsep .value_required:n = true ,
+ leftsep .value_required:n = true ,
+ rightsep .value_required:n = true ,
+ linewidth .value_required:n = true ,
+ width .value_required:n = true ,
+ height .value_required:n = true ,
+ hoffset .value_required:n = true ,
+ voffset .value_required:n = true ,
+ hsep .value_required:n = true ,
+ vsep .value_required:n = true ,
+ l .value_forbidden:n = true ,
+ r .value_forbidden:n = true ,
+ c .value_forbidden:n = true ,
+ i .value_forbidden:n = true ,
+ o .value_forbidden:n = true
+ }
+\fp_const:Nn \c__wstf_c_fp { 0.5 }
+\cs_new_protected:Npn \__wstf_swap_true:N #1
+ {
+ \bool_set_true:N \l__wstf_swap_bool
+ \bool_set_eq:NN \l__wstf_inner_bool #1
+ \bool_if:NTF \l__wstf_inner_bool
+ { \bool_set_false:N \l__wstf_outer_bool }
+ { \bool_set_true:N \l__wstf_outer_bool }
+ }
+\cs_new_protected_nopar:Npn \__wstf_swap_false:N
+ {
+ \bool_set_false:N \l__wstf_swap_bool
+ \fp_set_eq:NN \l__wstf_ratio_fp
+ }
+\cs_new_protected:Npn \__wstf_unknown_key:n #1
+ {
+ \regex_match:NnTF \c__wstf_integer_regex {#1}
+ { \int_set:Nn \l__wstf_top_int }
+ { \__wstf_unknown_key_error:n }
+ {#1}
+ }
+\regex_const:Nn \c__wstf_integer_regex { \A \d+ \Z }
+\cs_new_protected_nopar:Npn \__wstf_unknown_key_error:n
+ { \msg_error:nnn { wrapstuff } { unknown-key } }
+\msg_new:nnnn { wrapstuff } { unknown-key }
+ { The~key~'#1'~is~unknown~and~is~being~ignored. }
+ {
+ The~package~wrapstuff~does~not~have~a~key~called~'#1'.\\
+ Check~that~you~have~spelled~the~key~name~correctly.
+ }
+\NewDocumentCommand \wrapstuffset { m }
+ { \keys_set:nn { wrapstuff } {#1} }
+\NewDocumentCommand \wrapstuffclear { }
+ {
+ \par
+ \__wstf_clear:
+ }
+\cs_if_exist:NTF \ProcessKeyOptions
+ { \ProcessKeyOptions [ wrapstuff ] }
+ {
+ \RequirePackage { l3keys2e }
+ \ProcessKeysOptions { wrapstuff }
+ }
+%%
+%% This work consists of the file wrapstuff.dtx,
+%% and the derived files wrapstuff.pdf,
+%% wrapstuff.sty,
+%% wrapstuff.ins and
+%% README.md.
+%%
+%% End of file `wrapstuff.sty'.
Property changes on: trunk/Master/texmf-dist/tex/latex/wrapstuff/wrapstuff.sty
___________________________________________________________________
Added: svn:eol-style
## -0,0 +1 ##
+native
\ No newline at end of property
Modified: trunk/Master/tlpkg/bin/tlpkg-ctan-check
===================================================================
--- trunk/Master/tlpkg/bin/tlpkg-ctan-check 2022-07-20 20:23:38 UTC (rev 63948)
+++ trunk/Master/tlpkg/bin/tlpkg-ctan-check 2022-07-20 20:26:32 UTC (rev 63949)
@@ -866,7 +866,7 @@
widetable widows-and-orphans williams willowtreebook
windycity withargs witharrows
wnri wnri-latex wordcount wordlike worldflags worksheet
- wrapfig wrapfig2 wsemclassic wsuipa wtref
+ wrapfig wrapfig2 wrapstuff wsemclassic wsuipa wtref
xargs xassoccnt xbmks xcharter xcharter-math xcite xcjk2uni xcntperchap
xcolor xcolor-material xcolor-solarized
xcomment xcookybooky xcpdftips xdoc xduthesis xduts
Modified: trunk/Master/tlpkg/libexec/ctan2tds
===================================================================
--- trunk/Master/tlpkg/libexec/ctan2tds 2022-07-20 20:23:38 UTC (rev 63948)
+++ trunk/Master/tlpkg/libexec/ctan2tds 2022-07-20 20:26:32 UTC (rev 63949)
@@ -3176,6 +3176,7 @@
'undolabl' => 'tex',
'velthuis' => 'latex', # requires interaction
'wrapfig2' => 'etex',
+ 'wrapstuff' => 'etex',
'xduthesis' => 'tex',
'xecjk' => 'xecjk-xelatex',
'xmuthesis' => 'etex',
@@ -3901,7 +3902,7 @@
$standarddocfmt = $standardsourcefmt = "metapost";
$guess = "$standarddocfmt for docfmt/srcfmt";
- } elsif ($ctan_dir =~ m!/(CTAN|tex-archive)/macros/generic/!) {
+ } elsif ($ctan_dir =~ m!/(CTAN|tex-archive)/macros/(jptex/)?generic/!) {
$standarddocfmt = $standardsourcefmt = $standardfmt = "generic";
$guess = "$standarddocfmt for fmt/docfmt/srcfmt";
Modified: trunk/Master/tlpkg/tlpsrc/collection-latexextra.tlpsrc
===================================================================
--- trunk/Master/tlpkg/tlpsrc/collection-latexextra.tlpsrc 2022-07-20 20:23:38 UTC (rev 63948)
+++ trunk/Master/tlpkg/tlpsrc/collection-latexextra.tlpsrc 2022-07-20 20:26:32 UTC (rev 63949)
@@ -1403,6 +1403,7 @@
depend worksheet
depend wrapfig
depend wrapfig2
+depend wrapstuff
depend wtref
depend xargs
depend xassoccnt
Added: trunk/Master/tlpkg/tlpsrc/wrapstuff.tlpsrc
===================================================================
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