format-patch: track several references
Currently, format-patch can only track a single reference (the
In-Reply-To:) for each mail. To ensure proper threading, we should
list all known references for every mail.
Change the rev_info.ref_message_id field to a string_list, so that we
can append references at will, and change the output formatting
routines to print all of them in the References: header. The last
entry in the list is implicitly assumed to be the In-Reply-To:, which
gives output consistent with RFC 2822:
The "References:" field will contain the contents of the parent's
"References:" field (if any) followed by the contents of the
parent's "Message-ID:" field (if any).
Note that this is just preparatory work; nothing uses it yet, so all
"References:" fields in the output are still only one deep.
Signed-off-by: Thomas Rast <trast@student.ethz.ch>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
diff --git a/builtin-log.c b/builtin-log.c
index 2ae39af..5967113 100644
--- a/builtin-log.c
+++ b/builtin-log.c
@@ -17,6 +17,7 @@
#include "run-command.h"
#include "shortlog.h"
#include "remote.h"
+#include "string-list.h"
/* Set a default date-time format for git log ("log.date" config variable) */
static const char *default_date_mode = NULL;
@@ -1011,8 +1012,12 @@
numbered = 1;
if (numbered)
rev.total = total + start_number - 1;
- if (in_reply_to)
- rev.ref_message_id = clean_message_id(in_reply_to);
+ if (in_reply_to || thread || cover_letter)
+ rev.ref_message_ids = xcalloc(1, sizeof(struct string_list));
+ if (in_reply_to) {
+ const char *msgid = clean_message_id(in_reply_to);
+ string_list_append(msgid, rev.ref_message_ids);
+ }
if (cover_letter) {
if (thread)
gen_message_id(&rev, "cover");
@@ -1036,10 +1041,11 @@
* otherwise, make everything a reply
* to that.
*/
- if (rev.ref_message_id)
+ if (rev.ref_message_ids->nr > 0)
free(rev.message_id);
else
- rev.ref_message_id = rev.message_id;
+ string_list_append(rev.message_id,
+ rev.ref_message_ids);
}
gen_message_id(&rev, sha1_to_hex(commit->object.sha1));
}
diff --git a/log-tree.c b/log-tree.c
index 84a74e5..a315ebb 100644
--- a/log-tree.c
+++ b/log-tree.c
@@ -6,6 +6,7 @@
#include "log-tree.h"
#include "reflog-walk.h"
#include "refs.h"
+#include "string-list.h"
struct decoration name_decoration = { "object names" };
@@ -211,9 +212,13 @@
printf("Message-Id: <%s>\n", opt->message_id);
graph_show_oneline(opt->graph);
}
- if (opt->ref_message_id) {
- printf("In-Reply-To: <%s>\nReferences: <%s>\n",
- opt->ref_message_id, opt->ref_message_id);
+ if (opt->ref_message_ids && opt->ref_message_ids->nr > 0) {
+ int i, n;
+ n = opt->ref_message_ids->nr;
+ printf("In-Reply-To: <%s>\n", opt->ref_message_ids->items[n-1].string);
+ for (i = 0; i < n; i++)
+ printf("%s<%s>\n", (i > 0 ? "\t" : "References: "),
+ opt->ref_message_ids->items[i].string);
graph_show_oneline(opt->graph);
}
if (opt->mime_boundary) {
diff --git a/revision.h b/revision.h
index 7cf8487..8c0a417 100644
--- a/revision.h
+++ b/revision.h
@@ -89,7 +89,7 @@
int nr, total;
const char *mime_boundary;
char *message_id;
- const char *ref_message_id;
+ struct string_list *ref_message_ids;
const char *add_signoff;
const char *extra_headers;
const char *log_reencode;
