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branch: show more information when HEAD is detached

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This prints more helpful info when HEAD is detached: is it detached
because of bisect or rebase? What is the original branch name in those
cases? Is it detached because the user checks out a remote ref or a
tag (and which one)?

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Nguyễn Thái Ngọc Duy 2013-03-13 18:42:53 +07:00 committed by Junio C Hamano
parent b397ea4863
commit c8183cd285
3 changed files with 29 additions and 5 deletions
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26
builtin/branch.c
View file

@ -18,6 +18,7 @@
#include "string-list.h"
#include "column.h"
#include "utf8.h"
#include "wt-status.h"
static const char * const builtin_branch_usage[] = {
N_("git branch [options] [-r | -a] [--merged | --no-merged]"),
@ -550,6 +551,29 @@ static int calc_maxwidth(struct ref_list *refs)
return w;
}
static char *get_head_description(void)
{
struct strbuf desc = STRBUF_INIT;
struct wt_status_state state;
memset(&state, 0, sizeof(state));
wt_status_get_state(&state, 1);
if (state.rebase_in_progress ||
state.rebase_interactive_in_progress)
strbuf_addf(&desc, _("(no branch, rebasing %s)"),
state.branch);
else if (state.bisect_in_progress)
strbuf_addf(&desc, _("(no branch, bisecting %s)"),
state.branch);
else if (state.detached_from)
strbuf_addf(&desc, _("(detached from %s)"),
state.detached_from);
else
strbuf_addstr(&desc, _("(no branch)"));
free(state.branch);
free(state.onto);
free(state.detached_from);
return strbuf_detach(&desc, NULL);
}
static void show_detached(struct ref_list *ref_list)
{
@ -557,7 +581,7 @@ static void show_detached(struct ref_list *ref_list)
if (head_commit && is_descendant_of(head_commit, ref_list->with_commit)) {
struct ref_item item;
item.name = xstrdup(_("(no branch)"));
item.name = get_head_description();
item.width = utf8_strwidth(item.name);
item.kind = REF_LOCAL_BRANCH;
item.dest = NULL;

6
t/t3203-branch-output.sh
View file

@ -94,13 +94,13 @@ test_expect_success 'git branch -v pattern does not show branch summaries' '
test_must_fail git branch -v branch*
'
cat >expect <<'EOF'
* (no branch)
test_expect_success 'git branch shows detached HEAD properly' '
cat >expect <<EOF &&
* (detached from $(git rev-parse --short HEAD^0))
branch-one
branch-two
master
EOF
test_expect_success 'git branch shows detached HEAD properly' '
git checkout HEAD^0 &&
git branch >actual &&
test_i18ncmp expect actual

2
t/t6030-bisect-porcelain.sh
View file

@ -164,7 +164,7 @@ test_expect_success 'bisect start: existing ".git/BISECT_START" not modified if
cp .git/BISECT_START saved &&
test_must_fail git bisect start $HASH4 foo -- &&
git branch > branch.output &&
test_i18ngrep "* (no branch)" branch.output > /dev/null &&
test_i18ngrep "* (no branch, bisecting other)" branch.output > /dev/null &&
test_cmp saved .git/BISECT_START
'
test_expect_success 'bisect start: no ".git/BISECT_START" if mistaken rev' '