commit 008e1cc963b5ca54f1e71fa501ecb4b2306349ff
Author: Scott Kostyshak <skost...@lyx.org>
Date: Thu Aug 17 22:02:09 2023 -0400
Fix font substitutions of Thai documents
The substitutefont package is obsoleted now on TL because the
required functionality is in the kernel. See here:
https://ctan.org/pkg/substitutefont
---
lib/languages | 20 ++++++++++++++++----
1 files changed, 16 insertions(+), 4 deletions(-)
diff --git a/lib/languages b/lib/languages
index 3101ee3..760a1ff 100644
--- a/lib/languages
+++ b/lib/languages
@@ -1522,11 +1522,23 @@ Language thai
\DeclareRobustCommand{\copyright}{%
\ifmmode{\nfss@text{\textcopyright}}\else\textcopyright\fi}
\DeclareTextSymbol{\textcopyright}{LTH}{8}
+ %
% set up Thai fonts as substitue for the default families
- \usepackage{substitutefont}
- \substitutefont{LTH}{\rmdefault}{norasi}
- \substitutefont{LTH}{\sfdefault}{garuda}
- \substitutefont{LTH}{\ttdefault}{ttypist}
+ % The 'substitutefont' package is obsolete now, since commands
+ % from the LaTeX kernel can be used instead. See here:
+ % https://ctan.org/pkg/substitutefont
+ % https://www.latex-project.org/news/latex2e-news/ltnews31.pdf
+ \providecommand\IfFormatAtLeastTF{\@ifl@t@r\fmtversion}
+ \IfFormatAtLeastTF{2020/02/01}{%
+ \DeclareFontFamilySubstitution{LTH}{\rmdefault}{norasi}
+ \DeclareFontFamilySubstitution{LTH}{\sfdefault}{garuda}
+ \DeclareFontFamilySubstitution{LTH}{\ttdefault}{ttypist}
+ }{%
+ \usepackage{substitutefont}
+ \substitutefont{LTH}{\rmdefault}{norasi}
+ \substitutefont{LTH}{\sfdefault}{garuda}
+ \substitutefont{LTH}{\ttdefault}{ttypist}
+ }
EndPostBabelPreamble
End
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