This patch enables reLyX to handle \(...\)* correctly and not generate a
pile of crap. I attach a test case so the inquisitive can try out reLyX
both with and without the patch.
The last time I applied this, I wasn't careful enough and broke reLyX in
other respects. I have been more careful this time, exporting the UserGuide
to tex, running that through reLyX and re-exporting to tex. The resultant
tex files are functionally the same and are broken only because reLyX
doesn't import:
\usepackage{rotating}
\IfFileExists{url.sty}{\usepackage{url}}
and gets confused in a tabular. The errors are identical, with and without
my patch. I'll try to get to the bottom of them, but for now I'm going to
apply this to the 1.4.x tree.
JMarc, please consider for the 1.3.x branch.
--
Angus
Index: lib/reLyX/Text/TeX.pm
===================================================================
RCS file: /usr/local/lyx/cvsroot/lyx-devel/lib/reLyX/Text/TeX.pm,v
retrieving revision 1.3
diff -u -p -r1.3 TeX.pm
--- lib/reLyX/Text/TeX.pm 1 Feb 2003 17:46:18 -0000 1.3
+++ lib/reLyX/Text/TeX.pm 7 Feb 2003 14:01:02 -0000
@@ -96,13 +96,22 @@ $notusualtoks = "\\\\" . '\${}^_~&@%'; #
$notusualtokenclass = "[$notusualtoks]";
$usualtokenclass = "[^$notusualtoks]";
-# Original $macro wouldn't recognize, e.g., '\section*'. Added '\*?' - Ak
-# (Had to add it for \section and \\ separately.)
-# \" or \frac, e.g. Note that it eats whitespace AFTER the token. This is
-# correct LaTeX behavior, but if text follows such a macro, and you just
-# print out the macro & then the text, they will run together.
-$macro = '\\\\(?:[^a-zA-Z]\*?|([a-zA-Z]+\*?)\s*)'; # Has one level of grouping
-#$macro = '\\\\(?:[^a-zA-Z]|([a-zA-Z]+)\s*)'; # Contains one level of grouping
+# The $macro RE matches LaTeX macros. Here's exactly what it does:
+# $macro = \\\\(?:RE)
+# This matches either '\\' or \RE where RE = RE1 or RE2
+# RE1 = '\)', so $macro will match the end of a math environment, '\)'
+# RE2 = (((RE3 or RE4)\*?)\s*) where
+# RE3 and RE4 can each be followed by zero or one asterisks. Either is still
+# a macro. Ditto, trailing whitespace is included in the token because that's
+# what LaTeX does.
+# RE3 = '([^a-zA-Z)])' matches a single non-alphabetic char. We already
+# test for '\)', so that is explictly excluded from RE3 because '\)*' is not
+# a macro. Rather it is '\)' followed by an asterisk.
+# RE4 = '([a-zA-Z]+\*?)'
+# Ie, one or more alphabetic chars followed by zero or 1 asterisks
+# Eg, \section or \section*
+# Putting all this together:
+$macro = '\\\\(?:\)|((([^a-zA-Z)])|([a-zA-Z]+))\*?)\s*)';
# active is a backslashed macro or $$ (same as \[) or ^^ followed by a char
# (^^A means ASCII(1), e.g. See the TeXbook) or a special character like ~
\documentclass{article}
\begin{document}
a block of math followed by a '*': \(a=b\)*. The asterisk is part of the text.
\end{document}
