reachable: use traverse_commit_list instead of custom walk

diff --git a/commit.h b/commit.h
index a401ddfbc4e5c2e5e4a9d7aeedebc34e6103c9fa..bc68ccbe691a28ed9b22fa935c78d2e9640347ea 100644 (file)
--- a/commit.h
+++ b/commit.h
@@ -326,6 +326,17 @@ extern struct commit_extra_header *read_commit_extra_headers(struct commit *, co
 
 extern void free_commit_extra_headers(struct commit_extra_header *extra);
 
+/*
+ * Search the commit object contents given by "msg" for the header "key".
+ * Returns a pointer to the start of the header contents, or NULL. The length
+ * of the header, up to the first newline, is returned via out_len.
+ *
+ * Note that some headers (like mergetag) may be multi-line. It is the caller's
+ * responsibility to parse further in this case!
+ */
+extern const char *find_commit_header(const char *msg, const char *key,
+                                     size_t *out_len);
+
 typedef void (*each_mergetag_fn)(struct commit *commit, struct commit_extra_header *extra,
                                 void *cb_data);
 
@@ -359,7 +370,7 @@ extern void print_commit_list(struct commit_list *list,
  * at all.  This may allocate memory for sig->gpg_output, sig->gpg_status,
  * sig->signer and sig->key.
  */
-extern void check_commit_signature(const struct commit* commit, struct signature_check *sigc);
+extern void check_commit_signature(const struct commit *commit, struct signature_check *sigc);
 
 int compare_commits_by_commit_date(const void *a_, const void *b_, void *unused);