[latex3-commits] [l3svn] 02/03: Store page colour in global tl

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joseph pushed a commit to branch master
in repository l3svn.

commit 04c11b1f644e46a739cc6ec973843090a8f1cf71
Author: Joseph Wright <joseph.wright at morningstar2.co.uk>
Date:   Wed Oct 25 07:22:18 2017 +0100

    Store page colour in global tl
    
    This will be needed by pdfTeX/LuaTeX so makes sense to deal with more
    generally.
---
 l3trial/l3color-extras/l3color-extras.dtx |   12 +++++++-----
 1 file changed, 7 insertions(+), 5 deletions(-)

diff --git a/l3trial/l3color-extras/l3color-extras.dtx b/l3trial/l3color-extras/l3color-extras.dtx
index 6acef80..3875ca9 100644
--- a/l3trial/l3color-extras/l3color-extras.dtx
+++ b/l3trial/l3color-extras/l3color-extras.dtx
@@ -796,12 +796,13 @@
 %
 % \subsection{Page color}
 %
-% \begin{variable}{\l_@@_page_tl}
-%   Space to track the page color. Notice that page color is a global property
-%   but that is tracked at the level of specials: from the point of view of
-%   \pkg{expl3} code there is no need to hold this information.
+% \begin{variable}{\l_@@_page_tl, \g_@@_page_tl}
+%   Space to track the page color. We need both a local and a global token list
+%   here. The local one is used with other mechanisms for getting the data
+%   set up, the global one as some drivers need to set the color at shipout.
 %    \begin{macrocode}
 \tl_new:N \l_@@_page_tl
+\tl_new:N \g_@@_page_tl
 %    \end{macrocode}
 % \end{variable}
 %
@@ -813,11 +814,12 @@
   {
     \@@_parse:nN {#1} \l_@@_page_tl
     \@@_finalise:N \l_@@_page_tl
+    \tl_gset_eq:NN \g_@@_page_tl \l_@@_page_tl
     \__driver_color_page:
   }
 \cs_new_protected:Npn \color_page_clear:
   {
-    \tl_clear:N \l_@@_page_tl
+    \tl_gclear:N \g_@@_page_tl
     \__driver_color_page:
   }
 %    \end{macrocode}

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