mailinfo: make ">From" in-body header check more robust

diff --git a/refs.h b/refs.h
index c5376cee8d84f94ad2e08ce5baae7537e9d4a47a..ec46acdde7b67d3531a4c0e18d33901d2a4f307a 100644 (file)
--- a/refs.h
+++ b/refs.h
@@ -128,6 +128,8 @@ extern int repack_without_refs(const char **refnames, int n,
 
 extern int ref_exists(const char *);
 
+extern int is_branch(const char *refname);
+
 /*
  * If refname is a non-symbolic reference that refers to a tag object,
  * and the tag can be (recursively) dereferenced to a non-tag object,