diff options
Diffstat (limited to 'graphics/pgf/base/tex/pgfsys.code.tex')
-rw-r--r-- | graphics/pgf/base/tex/pgfsys.code.tex | 25 |
1 files changed, 24 insertions, 1 deletions
diff --git a/graphics/pgf/base/tex/pgfsys.code.tex b/graphics/pgf/base/tex/pgfsys.code.tex index 000eef098c..fd87b09181 100644 --- a/graphics/pgf/base/tex/pgfsys.code.tex +++ b/graphics/pgf/base/tex/pgfsys.code.tex @@ -1715,7 +1715,30 @@ % inserted into the resulting .pdf/.ps/.xxx file. - +% String comparison +\ifdefined\pdfstrcmp + \let\pgfsys@strcmp\pdfstrcmp +\else\ifdefined\strcmp + \let\pgfsys@strcmp\strcmp +\else\ifdefined\directlua + \directlua{ + local lft = lua.get_functions_table() + lft[\string#lft+1] = function() + local lhs = token.scan_string() + local rhs = token.scan_string() + if lhs < rhs then + tex.sprint(-2, "-1") + elseif lhs == rhs then + tex.sprint(-2, "0") + else + tex.sprint(-2, "1") + end + end + token.set_lua("pgfsys@strcmp", \string#lft, "global") + } +\else + \def\pgfsys@strcmp#1#2{\pgf@sys@fail{string comparison}}% +\fi\fi\fi % Discern the driver: |