texlive[59426] Master/texmf-dist: xintsession (1jun21)
commits+karl at tug.org
commits+karl at tug.org
Tue Jun 1 23:15:32 CEST 2021
Revision: 59426
http://tug.org/svn/texlive?view=revision&revision=59426
Author: karl
Date: 2021-06-01 23:15:32 +0200 (Tue, 01 Jun 2021)
Log Message:
-----------
xintsession (1jun21)
Modified Paths:
--------------
trunk/Master/texmf-dist/doc/plain/xintsession/README.md
trunk/Master/texmf-dist/tex/plain/xintsession/xintsession.tex
Modified: trunk/Master/texmf-dist/doc/plain/xintsession/README.md
===================================================================
--- trunk/Master/texmf-dist/doc/plain/xintsession/README.md 2021-06-01 21:15:13 UTC (rev 59425)
+++ trunk/Master/texmf-dist/doc/plain/xintsession/README.md 2021-06-01 21:15:32 UTC (rev 59426)
@@ -1,6 +1,6 @@
# xintsession README #
-Release: 0.2b (2021-05-23)
+Release: 0.3 (2021-05-31)
## Usage ##
@@ -11,7 +11,7 @@
[polexpr](http://www.ctan.org/pkg/polexpr)
(its version `0.8` or later is needed).
-You need 2 steps to start a session:
+To start a session:
1. execute `etex xintsession`, or if available, `rlwrap etex xintsession`
to benefit from arrow keys navigation and other improvements such
@@ -19,7 +19,8 @@
Alternatively, execute `rlwrap etex` and enter `xintsession` at the `**`
prompt.
One can also use the `-jobname` option of `etex` at this step.
-2. a welcome message is printed, hit the `RET` key at the `*` prompt.
+2. an `>>>` invite appears, start entering input, terminate it via `;`.
+ You can say `&help` for help.
The above explanations have been tested on a Unixen (Mac OS), and probably
`rlwrap` is not available on all platforms, but it is not a requirement.
@@ -30,40 +31,51 @@
You are now ready to make computations!
Here is a sample session (spaces do not matter):
- (Please type a command or say `\end')
- * 1+1/2+1/3+1/4+1/5;
- (@_1) 137/60
- * @_^3 ;
- (@_2) 2571353/216000
- * add(1/i, i=1..50);
- (@_3) 13943237577224054960759/3099044504245996706400
- *&fp
+ >>> 1+1/2+1/3+1/4+1/5;
+ @_1 137/60
+ >>> @_^3;
+ @_2 2571353/216000
+ >>> add(1/i, i=1..50);
+ @_3 13943237577224054960759/3099044504245996706400
+ >>> &fp
fp mode (16 digits)
- * @_;
- (@_4) 4.499205338329425
- * add(1/i, i=1..1000);
- (@_5) 7.485470860550346
- *&bye
+ >>> @_;
+ @_4 4.499205338329425
+ >>> add(1/i, i=1..1000);
+ @_5 7.485470860550346
+ >>> 1
+ ... +
+ ... \message{xintsession is great!}
+ (executing \message {xintsession is great!} in background)
+ xintsession is great!
+ ... 2
+ ... ;
+ @_6 3.0
+ >>> &bye
Did I say something wrong?
- Session transcript written on xintsession-210413_20h24.tex
+ Session transcript written on xintsession-210531_09h08.tex
+ )
No pages of output.
Transcript written on xintsession.log.
-As this example shows, the computational engine can work in various
-modes: exact, fp, int, and pol. Say `&fp=number` at the prompt
-to activate floating point mode with `number` as Digits (scientific
-functions implemented up to 62 digits at xint 1.4e).
+As this example illustrates, the computational engine can work in
+various modes: exact, fp, int, and pol. Say `&fp=number` at the
+`>>>` prompt
+to activate floating point mode with "Digits" set to `number`.
-If ill-formed input drops you into TeX error interaction mode, try
-hitting `S` it may work to bring you back to normal session.
+If ill-formed input drops you deep into TeX error interaction mode,
+try hitting `S` as it may work to bring you back to normal session.
-For important explanations, enter `&help` at the prompt.
+For additional explanations, enter `&help` at the `>>>` prompt.
## Change log ##
+- 0.3 (2021-05-31)
+ - implement `>>>` primary and `...` secondary invite prompts
+ - breaking: rename `\xintresume` into `\xintsession`
- 0.2b (2021-05-23)
- use `\errorcontextlines=0` regime (if not paused)
- - load `xintexpr` with `\newlinechar` set to `10` to track
+ - load `xintexpr` with `\newlinechar` set to `10` to activate
nicer error messages coming with `xintexpr 1.4g`
- add help panel navigation via `n`, `p`, `q` and `1`, ..., `5`
- fix catcode of @ was set to letter
Modified: trunk/Master/texmf-dist/tex/plain/xintsession/xintsession.tex
===================================================================
--- trunk/Master/texmf-dist/tex/plain/xintsession/xintsession.tex 2021-06-01 21:15:13 UTC (rev 59425)
+++ trunk/Master/texmf-dist/tex/plain/xintsession/xintsession.tex 2021-06-01 21:15:32 UTC (rev 59426)
@@ -1,4 +1,4 @@
-% Release 0.2b (2021-05-23) of xintsession.tex
+% Release 0.3 (2021-05-31) of xintsession.tex
% author: Jean-Francois Burnol
% License: LPPL 1.3c (author-maintained)
% Usage: execute "etex (or pdftex) xintsession"
@@ -20,13 +20,13 @@
% \newlinechar). It was renamed at 1.4e and this is one reason
% why we aborted input with earlier xintexpr...
\edef\xsrestorecatcodes{\XINTrestorecatcodes\xsrestorenewlinechar}%
-\endlinechar 13 %
+\endlinechar 13 % default anyhow
\newlinechar 10
\catcode`_ 11
\catcode`& 11
\catcode`@ 11
\catcode`^ 11
-\catcode`" 7
+\catcode`$ 7 %$
\catcode0 12
\newwrite\xs_out
\edef\xs_name{\jobname-\expandafter\xint_gobble_ii\the\year
@@ -37,62 +37,69 @@
\expandafter\xint_gobble_i\the\numexpr100+\time-60*((\time+30)/60-1).tex}%
\immediate\openout\xs_out=\xs_name\relax
\begingroup\catcode37 12
-\long\gdef\xs_message#1{\message{#1}\immediate\write\xs_out{%#1}}\endgroup
+\long\gdef\xs_message#1{\message{#1$$J}\immediate\write\xs_out{%#1}}\endgroup%$$
{\catcode13\active\def
-{""J}\catcode32\active\edef {\string }%
+{$$J}\catcode32\active\let \space%$$
\catcode`?=0\catcode`\\=12\relax%
?xdef?xs_logo{%
- _____ _____
- ____ ____(_)________ /_________ _________________
- __ |/_/_ /__ __ \ __/ _ \_ |/_/__ __ \_ ___/
- __> < _ / _ / / / /_ / __/_> < __ /_/ / /
- /_/|_| /_/ /_/ /_/\__/ \___//_/|_| _ .___//_/
+ _____ _____
+ ____ ____(_)________ /_________ _________________
+ __ |/_/_ /__ __ \ __/ _ \_ |/_/__ __ \_ ___/
+ __> < _ / _ / / / /_ / __/_> < __ /_/ / /
+ /_/|_| /_/ /_/ /_/\__/ \___//_/|_| _ .___//_/
/_/
- _____ _____ __________
- ___(_)________ /__________________ ________ /___(_)__ ______
- __ /__ __ \ __/ _ \_ ___/ __ `/ ___/ __/_ /__ | / / _ \
- _ / _ / / / /_ / __/ / / /_/ // /__ / /_ _ / __ |/ // __/
- /_/ /_/ /_/\__/ \___//_/ \__,_/ \___/ \__/ /_/ _____/ \___/%
+_____ _____ __________ ______
+___(_)________ /__________________ ________ /___(_)__ ______ / /
+__ /__ __ \ __/ _ \_ ___/ __ `/ ___/ __/_ /__ | / / _ \ /_/
+_ / _ / / / /_ / __/ / / /_/ // /__ / /_ _ / __ |/ // __/__
+/_/ /_/ /_/\__/ \___//_/ \__,_/ \___/ \__/ /_/ _____/ \___//_/%
}%
-?immediate?write128{%
-
- xintsession 0.2b
- Copyright (c) Jean-Francois Burnol, 2021.
-
- \jobname is ?jobname
- Transcript will go to log and to ?xs_name
-
- ===> HIT THE <RET> KEY NOW! <===%
+?xdef?xs_copyright{%
+ xintsession 0.3 (2021-05-31)
+ Copyright (c) Jean-Francois Burnol, 2021.%
}}%
\def\xs_no{0}%
\XINT_expr_defvar_one{@___}{{0}}%
\XINT_expr_defvar_one{@__}{{0}}%
\XINT_expr_defvar_one{@_}{{0}}%
-\def\xs_fetch{\let\xs_in\empty\xs_fetch_a}%
-\begingroup
-\catcode13\active%
-\long\gdef\xs_fetch_a#1
+\def\xs_prime_invite{>>> }%
+\def\xs_second_invite{... }%
+\def\xs_fetch
{%
+ \let\xs_in\empty
+ \let\xs_invite\xs_prime_invite
+ \xs_fetch_aa
+}%
+\def\xs_fetch_aa
+{%
+ \message{\xs_invite}\read-1to\xs_buf
+ \expandafter\xs_fetch_a\xs_buf\xs_fetch_a
+}%
+\long\def\xs_fetch_a#1\xs_fetch_a
+{%
\odef\xs_firstitem{\romannumeral0\xintfirstitem{#1.}}%
- \ifcat\relax\expandafter\noexpand\xs_firstitem%
- \expandafter\xs_cs%
- \else%
- \if &\expandafter\noexpand\xs_firstitem%
- \expandafter\expandafter\expandafter\xs_magic%
- \fi%
- \fi%
+ \ifcat\relax\expandafter\noexpand\xs_firstitem
+ \expandafter\xs_cs
+ \else
+ \if &\expandafter\noexpand\xs_firstitem
+ \expandafter\expandafter\expandafter\xs_magic
+ \fi
+ \fi
\if;\expandafter\noexpand\romannumeral0\xintlastitem{#1}%
\xs_fetch_b#1^%
- \else%
- \message{(Use ; to end multi-line input)}%
- \odef\xs_in{\xs_in#1}\expandafter\xs_fetch_a%
+ \else
+ \odef\xs_in{\xs_in#1}%
+ \let\xs_invite\xs_second_invite
+ \expandafter\xs_fetch_aa
\fi%
}%
-\endgroup
\long\def\xs_cs\if;\expandafter\noexpand\romannumeral0\xintlastitem#1#2\fi
{%
\xs_message{(executing \detokenize{#1} in background)}%
- #1\xs_fetch_a
+% potential problems if a group is closed by #1.
+% should I issue \xs_resetenv here ?
+ #1%
+ \message{$$J}\xs_fetch_aa%$$
}%
\def\xs_firstfour#1#2#3#4#5\xint_bye{\edef\xs_magic_in{#1#2#3#4}\def\xs_magic_inb{#5}}%
\long\def\xs_magic\if;\expandafter\noexpand\romannumeral0\xintlastitem#1#2\fi
@@ -102,8 +109,9 @@
\csname xs_magic@\xs_magic_in\expandafter\endcsname
\else
\xs_message{(\detokenize\expandafter{\xint_gobble_i#1} is not a magic keyword:
- ignored)}%
- \fi\xs_fetch_a
+ ignored)$$J}%$$
+ \fi
+ \xs_fetch_aa
}%
\long\def\xs_fetch_b#1;^%
{%
@@ -111,20 +119,20 @@
}%
\def\xs_fetch_c
{%
- \if\relax\romannumeral`""@\detokenize\expandafter{\xs_in}\relax\expandafter\xs_pause\fi
+ \if\relax\romannumeral`$$@\detokenize\expandafter{\xs_in}\relax\expandafter\xs_pause\fi%$$
\expandafter\xs_parse_a\xs_in:=^%
}%
-\def\xs_pause\expandafter\xs_parse_a\xs_in:=^{\xs_pause_a\xs_fetch_a}%
-\def\xs_pause_a\xs_fetch_a
+\def\xs_pause\expandafter\xs_parse_a\xs_in:=^{\xs_pause_a\xs_fetch_aa}%
+\def\xs_pause_a\xs_fetch_aa
{%
- \xs_message{Need a break? OK, use \string\xintresume\space if you change your mind.}%
- \xs_resetcats
+ \xs_message{Need a break? OK, use \string\xintsession\space if you change your mind.}%
+ \xs_resetenv
}%
-\def\xs_bye\xs_fetch_a
+\def\xs_bye\xs_fetch_aa
{%
\xs_message{Did I say something wrong?}%
\xs_message{Session transcript written on \xs_name}%
-% \xs_resetcats
+% \xs_resetenv
\immediate\closeout\xs_out
% expeditive exit because I need to think about generating new output
% filename with a check that it is not same (a minute may be too coarse?).
@@ -146,9 +154,13 @@
\XINT_expr_defvar_one{@___}{\csname XINT_expr_varvalue_ at __\endcsname}%
\XINT_expr_defvar_one{@__}{\csname XINT_expr_varvalue_ at _\endcsname}%
\XINT_expr_defvar_one{@_}{\csname XINT_expr_varvalue_ at _\xs_no\endcsname}%
- \xs_message{(@_\xs_no)\space\space\space\space\xs_xinteval{@_\xs_no}}%
+ \xs_message{%
+ @_\expandafter\xs_keepsix\xs_no\space\space\space\space\space\relax
+ \xs_xinteval{@_\xs_no}%
+ }%
\xs_fetch
}%
+\def\xs_keepsix#1#2#3#4#5#6#7\relax{#1#2#3#4#5#6}%
\def\xs_parse_b #1:=^%
{%
\def\xs_right{#1}\expandafter\xs_parse_c\xs_left(;%
@@ -216,7 +228,8 @@
}%
\def\xs_magic@&int
{%
- \xs_message{int mode (integer only: / rounds, // is floored division, /: is modulo)}%
+ \xs_message{int mode (integer only: / rounds, // is floored division, /: is
+ modulo)}%
\def\xs_mode{int}%
\def\xs_xintdefvar{\xintdefiivar}%
\def\xs_xintdeffunc{\xintdefiifunc}%
@@ -231,53 +244,69 @@
\def\xs_xinteval{\xinteval}%
}%
\def\xs_magic@&mod{\xs_message{current mode: \xs_mode}}%
-\def\xs_setcats
+\def\xs_setenv
{%
- \newlinechar10\endlinechar13\errorcontextlines0\relax
- \catcode13\active
+ \newlinechar10\endlinechar-1\errorcontextlines0\relax
}%
-\def\xs_storecats{\edef\xs_resetcats
+\def\xs_storeenv{\edef\xs_resetenv
{%
\newlinechar\the\newlinechar
\endlinechar\the\endlinechar
\errorcontextlines\the\errorcontextlines
- \catcode13=\the\catcode13\relax
}}%
+\def\xintsession
+ {\let\xintsession\xintsessionresume
+ \xs_setenv\xint_welcome\message{Starting in}\xs_magic@&exa\xs_fetch}%
+\def\xintsessionresume
+ {\xs_storeenv\xs_setenv\xs_welcome_back\xs_fetch}%
\begingroup
+% some things here are weird but this was initially to make the 0.3 transition
+% to usage of \read-1 in place of active ^^M with minimal collateral changes
+% the active ^^M here is now reduced to avoid to have to type explicit ^^J in the
+% definition of the help messages
\catcode13\active\catcode32\active%
-\gdef\xintstart{\edef {\string }\xs_setcats\def
-{""J}\message{\xs_logo
+\let \space% this is Plain default anyhow
+\def
+{$$J}%$$
+\xdef\xint_welcome{\noexpand\message{\xs_copyright
+ Welcome to
+\xs_logo
- Welcome to xintexpr interactive mode!
- - input is `;'-terminated and can extend over multiple lines,
- - definitions must be done using the `:=' syntax, not `='.
- - any line starting with a control sequence is executed in the
- background, the interrupted numerical input resumes at prompt.
+ - input is `;'-terminated and can extend over multiple lines
+ ("\xs_prime_invite" is main input invite, "\xs_second_invite" is continuation prompt)
+ - definitions are done with `:=' not with `='.
+% - any line starting with a control sequence is executed in the
+% background, the interrupted numerical input resumes at prompt.
Magic words: `&pause' (or `;'), `&help', `&bye',
`&exact', `&fp', `&int', `&pol'.
- Say e.g. `&fp=24' to activate floating point mode with Digits=24.
- Starting in}\xs_magic@&exa\let
-=\xs_fetch}%
-\gdef\xintresume{\edef {\string }\xs_storecats\xs_setcats%
-\message{Welcome back to xintexpr interactive mode!}%
-\let
-=\xs_fetch}%
+
+ \string\jobname is \jobname
+ Transcript will go to log and to \xs_name
+}}%
+\xdef\xs_welcome_back{\noexpand\message{%
+ You are back to the xintexpr interactive session!
+ (current mode: \noexpand\xs_mode, with Digits=\noexpand\xinttheDigits)
+
+ ">>> " means central computing is waiting for input
+ "... " means that multi-line input continues. Use `;' to terminate it.
+
+ Say `&bye' at any time to terminate the session and the TeX run.
+}}%
\catcode`?0\catcode`\\12\relax%
-?gdef?xs_help?xs_fetch_a{?begingroup?def
-{""J}?edef {?string }?xs_help_i}%
-?gdef?xs_help_i{?message{%
- - Terminate inputs using the `;' character. Input can extend over
- multiple lines (<RET> terminated).
+?xdef?xs_help_message_i{%
+ - Terminate inputs with the `;' character. Inputs can extend over
+ multiple lines (each terminated by <return>).
- An empty input (`;' terminated) or the magic word `&pause' puts
- the session on hold and switches to normal TeX interaction. Use
- \xintresume to resume the session.
+ the session on hold and switches to normal TeX interaction, with
+ its `*' prompt. Use \xintsession to resume the session.
- Lines starting with any control sequence are handed over to
- TeX, and numerical input resumes on next line.
+ TeX (no end of line space token is included), and the current
+ numerical input resumes on next line.
- - The numerical engine can work in various modes:
+ - The computing kernel can work in various modes:
exact (uses \xintexpr), fp (uses \xintfloatexpr), int (uses
(\xintiiexpr), and pol (makes definitions using \poldef).
To activate a mode enter `&<mode name>' at the prompt
@@ -285,18 +314,14 @@
- Issue `&mode' if you forgot in what mode you are currently in.
(1/5) say `n' (or directly <return>) for next, `q' to quit, or one of
- `2', `3', `4', or `5' to jump directly to corresponding panel.%
-}?def?xs_help_next##1
-{?if?xintFirstItem{##1n}n?xint_dothis?xs_help_ii?fi%
-?ifnum10<1?expandafter?string?romannumeral0?xintfirstitem{##1}?relax%
-?xint_dothis{?csname?xint_gobble_i xs_help_?romannumeral?xintFirstItem{##1}?endcsname}?fi%
-?xint_orthat?xs_help_quit}?xs_help_next}%
-?gdef?xs_help_ii{?message{%
+ `2', `3', `4', or `5' to jump directly to corresponding panel.
+}%
+?xdef?xs_help_message_ii{%
- Say `&exact' resp. `&fp' to go back and forth between exact
and floating point mode
- Say `&fp=<number>' for example `&fp=32' at the prompt to activate
- fp mode at a given Digits setting. This can be done in the midst
+ fp mode at a given Digits setting. This can be done in the midst
of the input of a multi-line computation!
- Math functions are supported up to Digits=62 (since xint 1.4e);
@@ -316,24 +341,19 @@
% `<=', `>=', `!=', `==' or `seq()' syntax but this currently was
% considered to add too much overhead for the benefit.
%
-(2/5) say `n' (next), `p' (previous), `q' (quit), or one of `1' to `5'.%
-}?def?xs_help_next##1
-{?if?xintFirstItem{##1n}n?xint_dothis?xs_help_iii?fi%
-?if?xintFirstItem{##1}p?xint_dothis?xs_help_i?fi%
-?ifnum10<1?expandafter?string?romannumeral0?xintfirstitem{##1}?relax%
-?xint_dothis{?csname?xint_gobble_i xs_help_?romannumeral?xintFirstItem{##1}?endcsname}?fi%
-?xint_orthat?xs_help_quit}?xs_help_next}%
-?gdef?xs_help_iii{?message{%
+(2/5) say `n' (next), `p' (previous), `q' (quit), or one of `1' to `5'.
+}%
+?xdef?xs_help_message_iii{%
- Functions defined in one mode are not available for usage in
other modes without further steps; check xintexpr doc.
- Polynomials in pol mode are defined using polname(x):=expression;
- (or with another letter). They can serve as functions in the exact
- mode. To use a polynomial also as an fp mode function, issue
+ (or with another letter). They can serve as functions in the exact
+ mode. To use a polynomial also as an fp mode function, issue
\PolGenFloatVariant{<polname>} at the prompt.
- Whenever a variable is defined, or a computation is performed,
- the result is assigned a label @_<integer>. These labels are
+ the result is assigned a label @_<integer>. These labels are
variables which can then be used in subsequent computations.
- The special variables @_, @__, and @___ hold the last, next
@@ -343,19 +363,14 @@
the automatic variable @_<integer> holds the whole thing, which
may be a nutple or an ople, in addition to individual variables.
-(3/5) say `n' (next), `p' (previous), `q' (quit), or one of `1' to `5'.%
-}?def?xs_help_next##1
-{?if?xintFirstItem{##1n}n?xint_dothis?xs_help_iv?fi%
-?if?xintFirstItem{##1}p?xint_dothis?xs_help_ii?fi%
-?ifnum10<1?expandafter?string?romannumeral0?xintfirstitem{##1}?relax%
-?xint_dothis{?csname?xint_gobble_i xs_help_?romannumeral?xintFirstItem{##1}?endcsname}?fi%
-?xint_orthat?xs_help_quit}?xs_help_next}%
-?gdef?xs_help_iv{?message{%
+(3/5) say `n' (next), `p' (previous), `q' (quit), or one of `1' to `5'.
+}%
+?xdef?xs_help_message_iv{%
- Variables defined in any mode can be used in any mode except:
* polynomials can be used as variables only in the pol and the
exact modes,
* integer-only mode requires... integer-only variables, also
- internally. Use num() or \xintiexpr...\relax as wrappers in int
+ internally. Use num() or \xintiexpr...\relax as wrappers in int
mode around exact or fp variables (even integer-valued ones).
Known issues:
@@ -365,23 +380,18 @@
the float() function with its second argument.
- An \xintexpr...\relax wrapper can not start a line, as it would
- trigger control sequence execution. Use parentheses or 0+\...
+ trigger control sequence execution. Use parentheses or 0+\...
- Exact mode does not reduce to lowest terms, use reduce().
-(4/5) say `n' (next), `p' (previous), `q' (quit), or one of `1' to `5'.%
-}?def?xs_help_next##1
-{?if?xintFirstItem{##1n}n?xint_dothis?xs_help_v?fi%
-?if?xintFirstItem{##1}p?xint_dothis?xs_help_iii?fi%
-?ifnum10<1?expandafter?string?romannumeral0?xintfirstitem{##1}?relax%
-?xint_dothis{?csname?xint_gobble_i xs_help_?romannumeral?xintFirstItem{##1}?endcsname}?fi%
-?xint_orthat?xs_help_quit}?xs_help_next}%
-?gdef?xs_help_v{?message{%
+(4/5) say `n' (next), `p' (previous), `q' (quit), or one of `1' to `5'.
+}%
+?xdef?xs_help_message_v{%
(cont.)
- A session transcript file is created which can be executed by
eTeX to redo all calculations; however @_, @__, and @___ will
not be defined in this context so need to be manually replaced
- by the suitable @_<integer>. The format of the transcript
+ by the suitable @_<integer>. The format of the transcript
is to be considered unstable at this stage.
Future:
@@ -396,25 +406,82 @@
the prompt and a recovery will be attempted. If deep in core
TeX errors, try escaping using `S'. It does work sometimes.
-(5/5) say `p' (previous), `q' (quit), or one of `1' to `5'.%
-}?def?xs_help_next##1
-{?if?xintFirstItem{##1n}p?xint_dothis?xs_help_iv?fi%
-?ifnum10<1?expandafter?string?romannumeral0?xintfirstitem{##1}?relax%
-?xint_dothis{?csname?xint_gobble_i xs_help_?romannumeral?xintFirstItem{##1}?endcsname}?fi%
-?xint_orthat?xs_help_quit}?xs_help_next}%
-?gdef?xs_help_quit{?message{%
- You are back to the xintexpr interactive session!
- (current mode: ?xs_mode)
-
- Waiting for input...
-
-(say `&bye' at any time to terminate the session and the TeX run.)%
-}?endgroup?xs_fetch}%
+(5/5) say `p' (previous), `q' (quit), or one of `1' to `5'.
+}%
?endgroup
+\def\xs_help\xs_fetch_aa{\xs_help_i}%
+\def\xs_help_i
+{%
+ \message{\xs_help_message_i}%
+ \def\xs_help_next##1\xs_help_next
+ {%
+ \if\xintFirstItem{##1n}n\xint_dothis\xs_help_ii\fi%
+ \ifnum10<1\expandafter\string\romannumeral0\xintfirstitem{##1}\relax%
+ \xint_dothis{\csname xs_help_\romannumeral\xintFirstItem{##1}\endcsname}\fi%
+ \xint_orthat\xs_help_quit
+ }%
+ \message{n, q, or 1 to 5: }%
+ \read-1to\xs_tmp\expandafter\xs_help_next\xs_tmp\xs_help_next
+}%
+\def\xs_help_ii
+{%
+ \message{\xs_help_message_ii}%
+ \def\xs_help_next##1\xs_help_next
+ {%
+ \if\xintFirstItem{##1n}n\xint_dothis\xs_help_iii\fi%
+ \if\xintFirstItem{##1}p\xint_dothis\xs_help_i\fi%
+ \ifnum10<1\expandafter\string\romannumeral0\xintfirstitem{##1}\relax%
+ \xint_dothis{\csname xs_help_\romannumeral\xintFirstItem{##1}\endcsname}\fi%
+ \xint_orthat\xs_help_quit
+ }%
+ \message{n, p, q, or 1 to 5: }%
+ \read-1to\xs_tmp\expandafter\xs_help_next\xs_tmp\xs_help_next
+}%
+\def\xs_help_iii
+{%
+ \message{\xs_help_message_iii}%
+ \def\xs_help_next##1\xs_help_next
+ {%
+ \if\xintFirstItem{##1n}n\xint_dothis\xs_help_iv\fi%
+ \if\xintFirstItem{##1}p\xint_dothis\xs_help_ii\fi%
+ \ifnum10<1\expandafter\string\romannumeral0\xintfirstitem{##1}\relax%
+ \xint_dothis{\csname xs_help_\romannumeral\xintFirstItem{##1}\endcsname}\fi%
+ \xint_orthat\xs_help_quit
+ }%
+ \message{n, p, q, or 1 to 5: }%
+ \read-1to\xs_tmp\expandafter\xs_help_next\xs_tmp\xs_help_next
+}%
+\def\xs_help_iv
+{%
+ \message{\xs_help_message_iv}%
+ \def\xs_help_next##1\xs_help_next
+ {%
+ \if\xintFirstItem{##1n}n\xint_dothis\xs_help_v\fi%
+ \if\xintFirstItem{##1}p\xint_dothis\xs_help_iii\fi%
+ \ifnum10<1\expandafter\string\romannumeral0\xintfirstitem{##1}\relax%
+ \xint_dothis{\csname xs_help_\romannumeral\xintFirstItem{##1}\endcsname}\fi%
+ \xint_orthat\xs_help_quit
+ }%
+ \message{n, p, q, or 1 to 5: }%
+ \read-1to\xs_tmp\expandafter\xs_help_next\xs_tmp\xs_help_next
+}%
+\def\xs_help_v
+{%
+ \message{\xs_help_message_v}%
+ \def\xs_help_next##1\xs_help_next
+ {%
+ \if\xintFirstItem{##1n}p\xint_dothis\xs_help_iv\fi%
+ \ifnum10<1\expandafter\string\romannumeral0\xintfirstitem{##1}\relax%
+ \xint_dothis{\csname xs_help_\romannumeral\xintFirstItem{##1}\endcsname}\fi%
+ \xint_orthat\xs_help_quit
+ }%
+ \message{p, q, or 1 to 5: }%
+ \read-1to\xs_tmp\expandafter\xs_help_next\xs_tmp\xs_help_next
+}%
+\def\xs_help_quit{\xs_welcome_back\xs_fetch}%
\let\xs_magic@&hel\xs_help\let\xs_help_vi\xs_help_quit\let\xs_help_vii\xs_help_quit
\let\xs_help_viii\xs_help_quit\let\xs_help_ix\xs_help_quit
+%
\xsrestorecatcodes%
-\csname xs\string _storecats\endcsname\endlinechar13\relax%
-\catcode13\active\def
-{\xintstart
-}\endinput%
+\csname xs\string _storeenv\endcsname\endlinechar13\relax%
+\endinput\xintsession%
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