Michael J Gruber <g...@drmicha.warpmail.net> writes:
> Junio C Hamano venit, vidit, dixit 06.03.2015 20:03:
>> Michael J Gruber <g...@drmicha.warpmail.net> writes:
>>>
>>> Note that now a checked branch is listed twice, once as target of the
>>> HEAD, once as branch: They are two different refs and colored
>>> differently.
>>
>> The pointee of HEAD would always be branch and will always appear on
>> the output when you show HEAD->$name_of_that_branch; is it feasible
>> to drop the duplicate, I wonder?
>
> It's doable but not nice, because we cannot take the order in which refs
> are processed for granted.
That is true, but when we format them into a single line in the
header in response to --decorate (or %d), don't we have all of them
already at hand---does the order still matter?
Here is an illustration of what I had in mind, made on a random
commit I happened to have checked out that does not have your
patches on this topic. Half of the change is a new helper function,
and the other half is mostly reindenting.
log-tree.c | 71 +++++++++++++++++++++++++++++++++++++++++++++++++++++++-------
1 file changed, 63 insertions(+), 8 deletions(-)
diff --git a/log-tree.c b/log-tree.c
index 7f0890e..e0c5865 100644
--- a/log-tree.c
+++ b/log-tree.c
@@ -173,6 +173,43 @@ static void show_children(struct rev_info *opt, struct
commit *commit, int abbre
}
/*
+ * Do we have HEAD in the output, and also the branch it points at?
+ * If so, find that decoration entry for that current branch.
+ */
+static const struct name_decoration *current_pointed_by_HEAD(const struct
name_decoration *decoration)
+{
+ const struct name_decoration *list, *head = NULL;
+ const char *branch_name = NULL;
+ unsigned char unused[20];
+ int rru_flags;
+
+ /* First find HEAD */
+ for (list = decoration; list; list = list->next)
+ if (list->type == DECORATION_REF_HEAD) {
+ head = list;
+ break;
+ }
+ if (!head)
+ return NULL;
+
+ /* Now resolve and find the matching current branch */
+ branch_name = resolve_ref_unsafe("HEAD", 0, unused, &rru_flags);
+ if (!(rru_flags & REF_ISSYMREF))
+ return NULL;
+ if (!skip_prefix(branch_name, "refs/heads/", &branch_name))
+ return NULL;
+
+ /* OK, do we have that ref in the list? */
+ for (list = decoration; list; list = list->next)
+ if ((list->type == DECORATION_REF_LOCAL) &&
+ !strcmp(branch_name, list->name)) {
+ return list;
+ }
+
+ return NULL;
+}
+
+/*
* The caller makes sure there is no funny color before calling.
* format_decorations_extended makes sure the same after return.
*/
@@ -184,6 +221,7 @@ void format_decorations_extended(struct strbuf *sb,
const char *suffix)
{
const struct name_decoration *decoration;
+ const struct name_decoration *current_and_HEAD;
const char *color_commit =
diff_get_color(use_color, DIFF_COMMIT);
const char *color_reset =
@@ -192,15 +230,32 @@ void format_decorations_extended(struct strbuf *sb,
decoration = get_name_decoration(&commit->object);
if (!decoration)
return;
+
+ current_and_HEAD = current_pointed_by_HEAD(decoration);
while (decoration) {
- strbuf_addstr(sb, color_commit);
- strbuf_addstr(sb, prefix);
- strbuf_addstr(sb, decorate_get_color(use_color,
decoration->type));
- if (decoration->type == DECORATION_REF_TAG)
- strbuf_addstr(sb, "tag: ");
- strbuf_addstr(sb, decoration->name);
- strbuf_addstr(sb, color_reset);
- prefix = separator;
+ /*
+ * When both current and HEAD are there, only
+ * show HEAD->current where HEAD would have
+ * appeaed, skipping the entry for current.
+ */
+ if (current_and_HEAD && decoration == current_and_HEAD)
+ ;
+ else {
+ strbuf_addstr(sb, color_commit);
+ strbuf_addstr(sb, prefix);
+ strbuf_addstr(sb, decorate_get_color(use_color,
decoration->type));
+ if (decoration->type == DECORATION_REF_TAG)
+ strbuf_addstr(sb, "tag: ");
+
+ if (current_and_HEAD &&
+ decoration->type == DECORATION_REF_HEAD)
+ strbuf_addf(sb, "HEAD->%s",
current_and_HEAD->name);
+ else
+ strbuf_addstr(sb, decoration->name);
+ strbuf_addstr(sb, color_reset);
+
+ prefix = separator;
+ }
decoration = decoration->next;
}
strbuf_addstr(sb, color_commit);
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