Properly quote AC_CHECK_DECLS' 4th argument.

[gnulib.git] / m4 / regex.m4

diff --git a/m4/regex.m4 b/m4/regex.m4
index e48fab0..fa46253 100644 (file)
--- a/m4/regex.m4
+++ b/m4/regex.m4
@@ -1,4 +1,4 @@
-# serial 59
+# serial 60
 
 # Copyright (C) 1996-2001, 2003-2011 Free Software Foundation, Inc.
 #
@@ -219,5 +219,5 @@ AC_DEFUN([gl_PREREQ_REGEX],
   AC_REQUIRE([AC_TYPE_MBSTATE_T])
   AC_CHECK_HEADERS([libintl.h])
   AC_CHECK_FUNCS_ONCE([isblank iswctype wcscoll])
-  AC_CHECK_DECLS([isblank], [], [], [#include <ctype.h>])
+  AC_CHECK_DECLS([isblank], [], [], [[#include <ctype.h>]])
 ])