Merge branch 'jc/show-sig'

* jc/show-sig:
  log --show-signature: reword the common two-head merge case
  log-tree: show mergetag in log --show-signature output
  log-tree.c: small refactor in show_signature()
  commit --amend -S: strip existing gpgsig headers
  verify_signed_buffer: fix stale comment
  gpg-interface: allow use of a custom GPG binary
  pretty: %G[?GS] placeholders
  test "commit -S" and "log --show-signature"
  log: --show-signature
  commit: teach --gpg-sign option

Conflicts:
	builtin/commit-tree.c
	builtin/commit.c
	builtin/merge.c
	notes-cache.c
	pretty.c

1 files changed, 6 insertions, 4 deletions

diff --git a/commit.h b/commit.h
index 4df397865a..154c0e34ff 100644
--- a/commit.h
+++ b/commit.h
@@ -193,15 +193,15 @@ extern void append_merge_tag_headers(struct commit_list *parents,
 
 extern int commit_tree(const struct strbuf *msg, unsigned char *tree,
 		       struct commit_list *parents, unsigned char *ret,
-		       const char *author);
+		       const char *author, const char *sign_commit);
 
 extern int commit_tree_extended(const struct strbuf *msg, unsigned char *tree,
 				struct commit_list *parents, unsigned char *ret,
-				const char *author,
+				const char *author, const char *sign_commit,
 				struct commit_extra_header *);
 
-extern struct commit_extra_header *read_commit_extra_headers(struct commit *);
-extern struct commit_extra_header *read_commit_extra_header_lines(const char *buf, size_t len);
+extern struct commit_extra_header *read_commit_extra_headers(struct commit *, const char **);
+extern struct commit_extra_header *read_commit_extra_header_lines(const char *buf, size_t len, const char **);
 
 extern void free_commit_extra_headers(struct commit_extra_header *extra);
 
@@ -218,4 +218,6 @@ struct merge_remote_desc {
  */
 struct commit *get_merge_parent(const char *name);
 
+extern int parse_signed_commit(const unsigned char *sha1,
+			       struct strbuf *message, struct strbuf *signature);
 #endif /* COMMIT_H */