[latex3-commits] [git/LaTeX3-latex3-latex3] master: Pick up 'traditional' class options for backend (6bb0c2743)

[Joseph Wright]

Repository : https://github.com/latex3/latex3
On branch  : master
Link       : https://github.com/latex3/latex3/commit/6bb0c2743a1f070fdc07fec1877567fd4db6f92c

>---------------------------------------------------------------

commit 6bb0c2743a1f070fdc07fec1877567fd4db6f92c
Author: Joseph Wright <joseph.wright at morningstar2.co.uk>
Date:   Tue Oct 8 13:04:42 2019 +0100

    Pick up 'traditional' class options for backend


>---------------------------------------------------------------

6bb0c2743a1f070fdc07fec1877567fd4db6f92c
 l3kernel/CHANGELOG.md |  1 +
 l3kernel/expl3.dtx    | 28 ++++++++++++++++++++++++++++
 2 files changed, 29 insertions(+)

diff --git a/l3kernel/CHANGELOG.md b/l3kernel/CHANGELOG.md
index 77987682b..ba109925d 100644
--- a/l3kernel/CHANGELOG.md
+++ b/l3kernel/CHANGELOG.md
@@ -11,6 +11,7 @@ this project uses date-based 'snapshot' version identifiers.
 
 - Moved `\debug_on:`, `\debug_off:`, `\debug_suspend:` and `\debug_resume:`
   to stable
+- Accept 'traditional' class options for backend (`dvipdfmx`, `dvips`, etc.)
 
 ## [2019-10-02]
 
diff --git a/l3kernel/expl3.dtx b/l3kernel/expl3.dtx
index 7dfc70847..83cea5bc2 100644
--- a/l3kernel/expl3.dtx
+++ b/l3kernel/expl3.dtx
@@ -1208,6 +1208,34 @@
 %    \end{macrocode}
 %
 %    \begin{macrocode}
+%<@@=sys>
+%    \end{macrocode}
+%
+% If there is a class option set, and recognised, we pick it up: these
+% will over-ride anything set automatically but will themsevles be
+% over-written if there is a package option.
+%    \begin{macrocode}
+\cs_if_exist:NT \@classoptionslist
+  {
+    \cs_if_eq:NNF \@classoptionslist \scan_stop:
+      {
+        \clist_map_inline:Nn \@classoptionslist
+          {
+            \str_case:nnT {#1}
+              {
+                { dvipdfmx } { \tl_gset:Nn \g_@@_backend_tl { dvipdfmx } }
+                { dvips }    { \tl_gset:Nn \g_@@_backend_tl { dvips } }
+                { dvisvgm }  { \tl_gset:Nn \g_@@_backend_tl { dvisvgm } }
+                { pdftex }   { \tl_gset:Nn \g_@@_backend_tl { pdfmode } }
+                { xetex }    { \tl_gset:Nn \g_@@_backend_tl { xdvipdfmx } }
+              }
+              { \clist_remove_all:Nn \@unusedoptionlist {#1} }
+          }
+      }
+  }
+%    \end{macrocode}
+%
+%    \begin{macrocode}
 %<@@=expl>
 %    \end{macrocode}
 %