1 files changed, 9 insertions, 0 deletions
diff --git a/strbuf.c b/strbuf.c
index b9b194b320..5efcfc8860 100644
--- a/strbuf.c
+++ b/strbuf.c
@@ -1,5 +1,14 @@
 #include "cache.h"
 
+int prefixcmp(const char *str, const char *prefix)
+{
+	for (; ; str++, prefix++)
+		if (!*prefix)
+			return 0;
+		else if (*str != *prefix)
+			return (unsigned char)*prefix - (unsigned char)*str;
+}
+
 /*
  * Used as the default ->buf value, so that people can always assume
  * buf is non NULL and ->buf is NUL terminated even for a freshly