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-rw-r--r--m4/regex.m47
1 files changed, 2 insertions, 5 deletions
diff --git a/m4/regex.m4 b/m4/regex.m4
index a79f03bcd..0eb69fc74 100644
--- a/m4/regex.m4
+++ b/m4/regex.m4
@@ -1,4 +1,4 @@
-#serial 10
+#serial 11
dnl Initially derived from code in GNU grep.
dnl Mostly written by Jim Meyering.
@@ -30,10 +30,7 @@ AC_DEFUN(jm_INCLUDED_REGEX,
const char *s;
struct re_registers regs;
re_set_syntax (RE_SYNTAX_POSIX_EGREP);
- /* These two brackets, '[[' and the one in the comment below serve
- to quote the brackets (unbalanced) in the following line. */
- s = re_compile_pattern ("a[[:]:]]b\n", 9, &regex);
- /* This bracket ']' helps quote the unbalanced expression above. */
+ [s = re_compile_pattern ("a[[:@:>@:]]b\n", 9, &regex);]
/* This should fail with _Invalid character class name_ error. */
if (!s)
exit (1);