From 68f09677b7aaedafa8c29280ccd76a034fe269f1 Mon Sep 17 00:00:00 2001

From: Debian <debian>

Date: Sun, 23 Nov 2008 17:28:46 +0100

Subject: [PATCH] Case-insensitive list matching fix

This fixes case-insensitive matching of lists in multi-byte character sets.

Original comment:

fix the following problem in multibyte locales.

 % echo Y | egrep -i '[y]'

 %

derived from gawk's dfa.c.

Original ticket: https://bugzilla.redhat.com/show_bug.cgi?id=123363

Debian: 61-dfa.c-case_fold-charclass.patch

---

 src/dfa.c |   14 ++++++++++++++

 1 files changed, 14 insertions(+), 0 deletions(-)

diff --git a/src/dfa.c b/src/dfa.c

index 934be97..088c379 100644

--- a/src/dfa.c

+++ b/src/dfa.c

@@ -689,6 +689,20 @@ parse_bracket_exp_mb ()

 	  REALLOC_IF_NECESSARY(work_mbc->chars, wchar_t, chars_al,

 			       work_mbc->nchars + 1);

 	  work_mbc->chars[work_mbc->nchars++] = (wchar_t)wc;

+	  if (case_fold && (iswlower((wint_t) wc) || iswupper((wint_t) wc)))

+	    {

+		wint_t altcase;

+

+		altcase = wc;		/* keeps compiler happy */

+		if (iswlower((wint_t) wc))

+		  altcase = towupper((wint_t) wc);

+		else if (iswupper((wint_t) wc))

+		  altcase = towlower((wint_t) wc);

+

+		REALLOC_IF_NECESSARY(work_mbc->chars, wchar_t, chars_al,

+			       work_mbc->nchars + 1);

+		work_mbc->chars[work_mbc->nchars++] = (wchar_t) altcase;

+	    }

 	}

     }

   while ((wc = wc1) != L']');

-- 

1.5.5.1