commit b51a9c1479645b3e0c7d5156d027a97a4bb87977
author Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Sat Jun 25 07:22:37 2016 +0200
committer Junio C Hamano <gitster@pobox.com> Fri Jul 01 12:44:57 2016 -0700
tree fb79a6624e86caa00db1a4b984e392d0ac66423e
parent 3d5b23a36218b0417a056fa7b5e6d25d595ccaf2

diffcore-pickaxe: support case insensitive match on non-ascii

Similar to the "grep -F -i" case, we can't use kws on icase search
outside ascii range, so we quote the string and pass it to regcomp as
a basic regexp and let regex engine deal with case sensitivity.

The new test is put in t7812 instead of t4209-log-pickaxe because
lib-gettext.sh might cause problems elsewhere, probably.

Noticed-by: Plamen Totev <plamen.totev@abv.bg>
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diffcore-pickaxe.c

diff --git a/diffcore-pickaxe.c b/diffcore-pickaxe.c
index 2093b6a..55067ca 100644
--- a/diffcore-pickaxe.c
+++ b/diffcore-pickaxe.c
@@ -7,6 +7,8 @@
 #include "diffcore.h"
 #include "xdiff-interface.h"
 #include "kwset.h"
+#include "commit.h"
+#include "quote.h"
 
 typedef int (*pickaxe_fn)(mmfile_t *one, mmfile_t *two,
 			  struct diff_options *o,
@@ -223,6 +225,15 @@
 			cflags |= REG_ICASE;
 		regcomp_or_die(&regex, needle, cflags);
 		regexp = &regex;
+	} else if (DIFF_OPT_TST(o, PICKAXE_IGNORE_CASE) &&
+		   has_non_ascii(needle)) {
+		struct strbuf sb = STRBUF_INIT;
+		int cflags = REG_NEWLINE | REG_ICASE;
+
+		basic_regex_quote_buf(&sb, needle);
+		regcomp_or_die(&regex, sb.buf, cflags);
+		strbuf_release(&sb);
+		regexp = &regex;
 	} else {
 		kws = kwsalloc(DIFF_OPT_TST(o, PICKAXE_IGNORE_CASE)
 			       ? tolower_trans_tbl : NULL);