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nixpkgs/pkgs/tools/text/ispell/patches/0008-Tex-backslash.patch
2018-03-01 23:54:04 +01:00

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From: Ken Stevens <kstevens@ece.utah.edu>
Date: Sat, 15 Jul 2000 22:10:53 -0400
Subject: 0008 Tex backslash
Version 3.1.20 contains an irritating bug when using latex that causes all
sorts of problems when the backslash is used. (The backslash is a common
character in latex that is used, among other things, to create a forced space
similar to the tilde character.) In the current version, 3.1.20, the next TWO
characters are skipped after a backslash. This can results in misspellings and
the file being incorrectly parsed. (For example, if the text contains the
sequence `\ $' math mode will not be entered until the matching $ which should
end it, resulting in the body of the text not being spell checked and the math
region being checked.)
Make sure to undefine NO8BIT and use a larger number for MASKBITS if you are
using iso character sets.
http://www.kdstevens.com/~stevens/ispell-faq.html#bslash
---
defmt.c | 7 +++----
1 files changed, 3 insertions(+), 4 deletions(-)
diff --git a/defmt.c b/defmt.c
index 35f93e4..7499752 100644
--- a/defmt.c
+++ b/defmt.c
@@ -884,6 +884,8 @@ static int TeX_math_end (bufp)
return 0;
}
+/* Updates bufp to point to the next character to skip. */
+/* Should only be called on non-word characters. */
static int TeX_math_begin (bufp)
unsigned char ** bufp;
{
@@ -902,10 +904,7 @@ static int TeX_math_begin (bufp)
if (**bufp == TEXLEFTPAREN || **bufp == TEXLEFTSQUARE)
return 1;
else if (!isalpha(**bufp) && **bufp != '@')
- {
- (*bufp)++;
- continue;
- }
+ return 0;
else if (TeX_strncmp (*bufp, "begin", 5) == 0)
{
if (TeX_math_check ('b', bufp))
--