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[PATCH v3 3/4] merge: split write_merge_state in two

From
Michael J Gruber <git@grubix.eu>
Date
Aug 23, 2017, 12:10 UTC
Message-ID
<5e23092c21b834424f7a9bb0a0fc01c0a729293d.1503489842.git.git@grubix.eu>
In-Reply-To
<xmqq1so34m6d.fsf@gitster.mtv.corp.google.com>

write_merge_state() writes out the merge heads, mode, and msg. But we may want to write out heads, mode without the msg. So, split out heads (+mode) into a separate function write_merge_heads() that is called by write_merge_state().

No funtional change so far, except when these non-atomic writes are interrupted: we write heads-mode-msg now when we used to write heads-msg-mode.

Signed-off-by: Michael J Gruber <git@grubix.eu>
---
 builtin/merge.c | 11 ++++++++---
 1 file changed, 8 insertions(+), 3 deletions(-)
diff --git a/builtin/merge.c b/builtin/merge.c
index dafec80fa9..db3335b3bf 100644
--- a/builtin/merge.c
+++ b/builtin/merge.c
@@ -910,7 +910,7 @@ static int setup_with_upstream(const char ***argv)
 	return i;
 }
 
-static void write_merge_state(struct commit_list *remoteheads)
+static void write_merge_heads(struct commit_list *remoteheads)
 {
 	struct commit_list *j;
 	struct strbuf buf = STRBUF_INIT;
@@ -926,8 +926,6 @@ static void write_merge_state(struct commit_list *remoteheads)
 		strbuf_addf(&buf, "%s\n", oid_to_hex(oid));
 	}
 	write_file_buf(git_path_merge_head(), buf.buf, buf.len);
-	strbuf_addch(&merge_msg, '\n');
-	write_file_buf(git_path_merge_msg(), merge_msg.buf, merge_msg.len);
 
 	strbuf_reset(&buf);
 	if (fast_forward == FF_NO)
@@ -935,6 +933,13 @@ static void write_merge_state(struct commit_list *remoteheads)
 	write_file_buf(git_path_merge_mode(), buf.buf, buf.len);
 }
 
+static void write_merge_state(struct commit_list *remoteheads)
+{
+	write_merge_heads(remoteheads);
+	strbuf_addch(&merge_msg, '\n');
+	write_file_buf(git_path_merge_msg(), merge_msg.buf, merge_msg.len);
+}
+
 static int default_edit_option(void)
 {
 	static const char name[] = "GIT_MERGE_AUTOEDIT";
-- 
2.14.1.426.g4352aa77a5
Previous: Michael J GruberNext: Michael J Gruber
Message 13 of 22 in “Git makes a merge commit but as a normal (non-merge) commit”
  1. hIpPyAug 18, 2017
  2. Michael J GruberAug 21, 2017
  3. merge: save merge state earlierMichael J Gruber, Aug 21, 2017
  4. 1/3 Documentation/git-merge: explain --continueMichael J Gruber, Aug 21, 2017
  5. Martin ÅgrenAug 21, 2017
  6. Michael J GruberAug 22, 2017
  7. Martin ÅgrenAug 22, 2017
  8. hIpPyAug 22, 2017
  9. Junio C HamanoAug 22, 2017
  10. 1/4 Documentation/git-merge: explain --continueMichael J Gruber, Aug 23, 2017
  11. 0/4 Keep merge during killsMichael J Gruber, Aug 23, 2017
  12. 2/4 merge: clarify call chainMichael J Gruber, Aug 23, 2017
  13. 3/4 merge: split write_merge_state in twoMichael J Gruber, Aug 23, 2017
  14. 4/4 merge: save merge state earlierMichael J Gruber, Aug 23, 2017
  15. Junio C HamanoAug 22, 2017
  16. 3/3 merge: save merge state earlierMichael J Gruber, Aug 21, 2017
  17. Junio C HamanoAug 22, 2017
  18. Michael J GruberAug 22, 2017
  19. Junio C HamanoAug 22, 2017
  20. 0/3 Keep merge during killsMichael J Gruber, Aug 21, 2017
  21. 2/3 merge: split write_merge_state in twoMichael J Gruber, Aug 21, 2017
  22. Junio C HamanoAug 22, 2017

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