This is most useful when you fork your branches off a remote ref and
rely on ref decoration to show your fork points in `git log`. Then you
do a "git fetch" and suddenly the remote decoration is gone because
remote refs are moved forward. With this, we can still see something
like "origin/foo@{1}"
This is for remote refs only because based on my experience, docorating
local reflog is just too noisy. You will most likely see HEAD@{1},
HEAD@{2} and so on. We can add that as a separate option in future if we
see a need for it.
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@xxxxxxxxx>
---
I've been using this for many weeks and it has proven its usefulness
(to me). Looks like good material to send upstream.
Documentation/git-log.txt | 5 +++++
builtin/log.c | 10 +++++++++-
log-tree.c | 43 +++++++++++++++++++++++++++++++++++++++----
log-tree.h | 2 +-
pretty.c | 4 ++--
revision.c | 2 +-
6 files changed, 57 insertions(+), 9 deletions(-)
diff --git a/Documentation/git-log.txt b/Documentation/git-log.txt
index 32246fd..f5ee575 100644
--- a/Documentation/git-log.txt
+++ b/Documentation/git-log.txt
@@ -38,6 +38,11 @@ OPTIONS
are shown as if 'short' were given, otherwise no ref names are
shown. The default option is 'short'.
+--decorate-remote-reflog[=<n>]::
+ Decorate `<n>` most recent reflog entries on remote refs, up
+ to the specified number of entries. By default, only the most
+ recent reflog entry is decorated.
+
--source::
Print out the ref name given on the command line by which each
commit was reached.
diff --git a/builtin/log.c b/builtin/log.c
index 55d20cc..c208703 100644
--- a/builtin/log.c
+++ b/builtin/log.c
@@ -36,6 +36,7 @@ static int default_follow;
static int default_show_signature;
static int decoration_style;
static int decoration_given;
+static int decorate_remote_reflog;
static int use_mailmap_config;
static const char *fmt_patch_subject_prefix = "PATCH";
static const char *fmt_pretty;
@@ -141,6 +142,10 @@ static void cmd_log_init_finish(int argc, const char **argv, const char *prefix,
OPT_BOOL(0, "use-mailmap", &mailmap, N_("Use mail map file")),
{ OPTION_CALLBACK, 0, "decorate", NULL, NULL, N_("decorate options"),
PARSE_OPT_OPTARG, decorate_callback},
+ { OPTION_INTEGER, 0, "decorate-remote-reflog",
+ &decorate_remote_reflog, N_("n"),
+ N_("decorate the last <n> reflog entries of remote refs"),
+ PARSE_OPT_OPTARG | PARSE_OPT_NONEG, NULL, 1 },
OPT_CALLBACK('L', NULL, &line_cb, "n,m:file",
N_("Process line range n,m in file, counting from 1"),
log_line_range_callback),
@@ -195,9 +200,12 @@ static void cmd_log_init_finish(int argc, const char **argv, const char *prefix,
rev->abbrev_commit = 0;
}
+ if (decorate_remote_reflog > 0 && !decoration_style)
+ decoration_style = DECORATE_SHORT_REFS;
if (decoration_style) {
rev->show_decorations = 1;
- load_ref_decorations(decoration_style);
+ load_ref_decorations(decoration_style,
+ decorate_remote_reflog);
}
if (rev->line_level_traverse)
diff --git a/log-tree.c b/log-tree.c
index 8c24157..3d85ebc 100644
--- a/log-tree.c
+++ b/log-tree.c
@@ -88,14 +88,37 @@ const struct name_decoration *get_name_decoration(const struct object *obj)
return lookup_decoration(&name_decoration, obj);
}
+struct reflog_cb {
+ int type;
+ int count;
+ int nth;
+ const char *refname;
+};
+
+static int add_nth_reflog(unsigned char *osha1, unsigned char *nsha1,
+ const char *email, unsigned long timestamp, int tz,
+ const char *message, void *cb_data)
+{
+ struct reflog_cb *cb = cb_data;
+ struct commit *commit;
+
+ commit = lookup_commit(nsha1);
+ if (commit && cb->nth) {
+ struct strbuf sb = STRBUF_INIT;
+ strbuf_addf(&sb, "%s@{%d}", cb->refname, cb->nth);
+ add_name_decoration(cb->type, sb.buf, &commit->object);
+ strbuf_release(&sb);
+ }
+ cb->nth++;
+ return cb->nth >= cb->count;
+}
+
static int add_ref_decoration(const char *refname, const struct object_id *oid,
int flags, void *cb_data)
{
struct object *obj;
enum decoration_type type = DECORATION_NONE;
- assert(cb_data == NULL);
-
if (starts_with(refname, git_replace_ref_base)) {
struct object_id original_oid;
if (!check_replace_refs)
@@ -135,6 +158,17 @@ static int add_ref_decoration(const char *refname, const struct object_id *oid,
parse_object(obj->oid.hash);
add_name_decoration(DECORATION_REF_TAG, refname, obj);
}
+
+ if (cb_data && type == DECORATION_REF_REMOTE) {
+ struct reflog_cb cb;
+
+ memset(&cb, 0, sizeof(cb));
+ cb.refname = refname;
+ cb.type = type;
+ cb.count = *(int *)cb_data + 1 /* for @{0} */;
+
+ for_each_reflog_ent_reverse(refname, add_nth_reflog, &cb);
+ }
return 0;
}
@@ -147,13 +181,14 @@ static int add_graft_decoration(const struct commit_graft *graft, void *cb_data)
return 0;
}
-void load_ref_decorations(int flags)
+void load_ref_decorations(int flags, int remote_reflog)
{
if (!decoration_loaded) {
+ void *cb = remote_reflog ? &remote_reflog : NULL;
decoration_loaded = 1;
decoration_flags = flags;
- for_each_ref(add_ref_decoration, NULL);
+ for_each_ref(add_ref_decoration, cb);
head_ref(add_ref_decoration, NULL);
for_each_commit_graft(add_graft_decoration, NULL);
}
diff --git a/log-tree.h b/log-tree.h
index c8116e6..bb46c53 100644
--- a/log-tree.h
+++ b/log-tree.h
@@ -25,7 +25,7 @@ void log_write_email_headers(struct rev_info *opt, struct commit *commit,
const char **subject_p,
const char **extra_headers_p,
int *need_8bit_cte_p);
-void load_ref_decorations(int flags);
+void load_ref_decorations(int flags, int reflog);
#define FORMAT_PATCH_NAME_MAX 64
void fmt_output_commit(struct strbuf *, struct commit *, struct rev_info *);
diff --git a/pretty.c b/pretty.c
index 5e68383..ec8e1cc 100644
--- a/pretty.c
+++ b/pretty.c
@@ -1189,11 +1189,11 @@ static size_t format_commit_one(struct strbuf *sb, /* in UTF-8 */
strbuf_addstr(sb, get_revision_mark(NULL, commit));
return 1;
case 'd':
- load_ref_decorations(DECORATE_SHORT_REFS);
+ load_ref_decorations(DECORATE_SHORT_REFS, 0);
format_decorations(sb, commit, c->auto_color);
return 1;
case 'D':
- load_ref_decorations(DECORATE_SHORT_REFS);
+ load_ref_decorations(DECORATE_SHORT_REFS, 0);
format_decorations_extended(sb, commit, c->auto_color, "", ", ", "");
return 1;
case 'g': /* reflog info */
diff --git a/revision.c b/revision.c
index b37dbec..4d5cbf5 100644
--- a/revision.c
+++ b/revision.c
@@ -1743,7 +1743,7 @@ static int handle_revision_opt(struct rev_info *revs, int argc, const char **arg
revs->simplify_by_decoration = 1;
revs->limited = 1;
revs->prune = 1;
- load_ref_decorations(DECORATE_SHORT_REFS);
+ load_ref_decorations(DECORATE_SHORT_REFS, 0);
} else if (!strcmp(arg, "--date-order")) {
revs->sort_order = REV_SORT_BY_COMMIT_DATE;
revs->topo_order = 1;
--
2.8.2.524.g6ff3d78