1 files changed, 1 insertions, 0 deletions
diff --git a/grep.h b/grep.h
index a67005de6..5b767c931 100644
--- a/grep.h
+++ b/grep.h
@@ -59,6 +59,7 @@ struct grep_opt {
 	struct grep_pat *pattern_list;
 	struct grep_pat **pattern_tail;
 	struct grep_expr *pattern_expression;
+	const char *prefix;
 	int prefix_length;
 	regex_t regexp;
 	unsigned linenum:1;