check-ignore: add -n / --non-matching option

diff --git a/grep.h b/grep.h
index 36e49d8255e2952828f367a0e35d4fcb027d9772..ed7de6bec8e604a7b3dcb9f9a19053696b7c3fdf 100644 (file)
--- a/grep.h
+++ b/grep.h
@@ -38,7 +38,7 @@ struct grep_pat {
        const char *origin;
        int no;
        enum grep_pat_token token;
-       const char *pattern;
+       char *pattern;
        size_t patternlen;
        enum grep_header_field field;
        regex_t regexp;