tree-diff: allow diff_tree_sha1 to accept NULL sha1

diff --git a/git-compat-util.h b/git-compat-util.h
index 9e202dde78efe33b33c05dfbbbec60b05d642ea8..cbd86c37f51c00679498107d1a05131c19afa36e 100644 (file)
--- a/git-compat-util.h
+++ b/git-compat-util.h
@@ -350,7 +350,9 @@ extern void set_die_routine(NORETURN_PTR void (*routine)(const char *err, va_lis
 extern void set_error_routine(void (*routine)(const char *err, va_list params));
 extern void set_die_is_recursing_routine(int (*routine)(void));
 
+extern int starts_with(const char *str, const char *prefix);
 extern int prefixcmp(const char *str, const char *prefix);
+extern int ends_with(const char *str, const char *suffix);
 extern int suffixcmp(const char *str, const char *suffix);
 
 static inline const char *skip_prefix(const char *str, const char *prefix)