improve chapter detection

latex3 · Jun 9, 2024 · b355963 · b355963
1 parent 21c3dca
commit b355963
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diff --git a/CHANGELOG.md b/CHANGELOG.md
@@ -5,7 +5,12 @@ All notable changes to the `tagpdf` package since the
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 this project uses date-based 'snapshot' version identifiers.
 
+## [Unreleased]
+### Fixed
+ - improved detection if a class supports \chapter for ltugboat.
+
 ## [2024-04-12]
+Version 0.99b
 ### Added
  - \tag_spacechar_on:, \tag_spacechar_off: to locally switch off 
    the real space chars.  

diff --git a/tagpdf-roles.dtx b/tagpdf-roles.dtx
@@ -750,19 +750,31 @@
   {
     \hook_gput_code:nnn {begindocument}{tagpdf}
       {
-        \cs_if_exist:NT \chapter
-           {
-             \prop_map_inline:cn{g_@@_role_NS_latex-book_prop}
-               {
-                 \@@_role_add_tag:ne {#1}{\use_i:nn #2\c_empty_tl\c_empty_tl}
-               }
-           }
+        \bool_lazy_and:nnT 
+         {
+           \cs_if_exist_p:N \chapter
+         }
+         {
+           \cs_if_exist_p:N \c@chapter
+         }  
+         {
+           \prop_map_inline:cn{g_@@_role_NS_latex-book_prop}
+             {
+               \@@_role_add_tag:ne {#1}{\use_i:nn #2\c_empty_tl\c_empty_tl}
+             }
+         }
       }
   }
   {
     \hook_gput_code:nnn {begindocument}{tagpdf}
       {
-        \cs_if_exist:NT \chapter
+        \bool_lazy_and:nnT 
+         {
+           \cs_if_exist_p:N \chapter
+         }
+         {
+           \cs_if_exist_p:N \c@chapter
+         }  
          {
            \prop_map_inline:cn{g_@@_role_NS_latex-book_prop}
              {