commit -v: strip diffs and submodule shortlogs from the commit message

When using the '-v' option of "git commit" the diff added to the commit
message temporarily for editing is stripped off after the user exited the
editor by searching for "\ndiff --git " and truncating the commmit message
there if it is found.

But this approach has two problems:

- when the commit message itself contains a line starting with
  "diff --git" it will be truncated there prematurely; and

- when the "diff.submodule" setting is set to "log", the diff may
  start with "Submodule <hash1>..<hash2>", which will be left in
  the commit message while it shouldn't.

Fix that by introducing a special scissor separator line starting with the
comment character ('#' or the core.commentChar config if set) followed by
two lines describing what it is for. The scissor line - which will not be
translated - is used to reliably detect the start of the diff so it can be
chopped off from the commit message, no matter what the user enters there.

Turn a known test failure fixed by this change into a successful test;
also add one for a diff starting with a submodule log and another one for
proper handling of the comment char.

Reported-by: Ari Pollak <ari@debian.org>
Signed-off-by: Jens Lehmann <Jens.Lehmann@web.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Jens Lehmann 2013-12-05 20:44:14 +01:00 коммит произвёл Junio C Hamano
Родитель c6f1b920ac
Коммит 1a72cfd7fa
4 изменённых файлов: 58 добавлений и 9 удалений

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@ -1505,7 +1505,7 @@ int cmd_commit(int argc, const char **argv, const char *prefix)
struct strbuf sb = STRBUF_INIT;
struct strbuf author_ident = STRBUF_INIT;
const char *index_file, *reflog_msg;
char *nl, *p;
char *nl;
unsigned char sha1[20];
struct ref_lock *ref_lock;
struct commit_list *parents = NULL, **pptr = &parents;
@ -1601,11 +1601,8 @@ int cmd_commit(int argc, const char **argv, const char *prefix)
}
/* Truncate the message just before the diff, if any. */
if (verbose) {
p = strstr(sb.buf, "\ndiff --git ");
if (p != NULL)
strbuf_setlen(&sb, p - sb.buf + 1);
}
if (verbose)
wt_status_truncate_message_at_cut_line(&sb);
if (cleanup_mode != CLEANUP_NONE)
stripspace(&sb, cleanup_mode == CLEANUP_ALL);

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@ -65,9 +65,35 @@ test_expect_success 'diff in message is retained without -v' '
check_message diff
'
test_expect_failure 'diff in message is retained with -v' '
test_expect_success 'diff in message is retained with -v' '
git commit --amend -F diff -v &&
check_message diff
'
test_expect_success 'submodule log is stripped out too with -v' '
git config diff.submodule log &&
git submodule add ./. sub &&
git commit -m "sub added" &&
(
cd sub &&
echo "more" >>file &&
git commit -a -m "submodule commit"
) &&
(
GIT_EDITOR=cat &&
export GIT_EDITOR &&
test_must_fail git commit -a -v 2>err
) &&
test_i18ngrep "Aborting commit due to empty commit message." err
'
test_expect_success 'verbose diff is stripped out with set core.commentChar' '
(
GIT_EDITOR=cat &&
export GIT_EDITOR &&
test_must_fail git -c core.commentchar=";" commit -a -v 2>err
) &&
test_i18ngrep "Aborting commit due to empty commit message." err
'
test_done

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@ -16,6 +16,9 @@
#include "column.h"
#include "strbuf.h"
static char cut_line[] =
"------------------------ >8 ------------------------\n";
static char default_wt_status_colors[][COLOR_MAXLEN] = {
GIT_COLOR_NORMAL, /* WT_STATUS_HEADER */
GIT_COLOR_GREEN, /* WT_STATUS_UPDATED */
@ -767,6 +770,18 @@ conclude:
status_printf_ln(s, GIT_COLOR_NORMAL, "");
}
void wt_status_truncate_message_at_cut_line(struct strbuf *buf)
{
const char *p;
struct strbuf pattern = STRBUF_INIT;
strbuf_addf(&pattern, "%c %s", comment_line_char, cut_line);
p = strstr(buf->buf, pattern.buf);
if (p && (p == buf->buf || p[-1] == '\n'))
strbuf_setlen(buf, p - buf->buf);
strbuf_release(&pattern);
}
static void wt_status_print_verbose(struct wt_status *s)
{
struct rev_info rev;
@ -787,10 +802,20 @@ static void wt_status_print_verbose(struct wt_status *s)
* If we're not going to stdout, then we definitely don't
* want color, since we are going to the commit message
* file (and even the "auto" setting won't work, since it
* will have checked isatty on stdout).
* will have checked isatty on stdout). But we then do want
* to insert the scissor line here to reliably remove the
* diff before committing.
*/
if (s->fp != stdout)
if (s->fp != stdout) {
const char *explanation = _("Do not touch the line above.\nEverything below will be removed.");
struct strbuf buf = STRBUF_INIT;
rev.diffopt.use_color = 0;
fprintf(s->fp, "%c %s", comment_line_char, cut_line);
strbuf_add_commented_lines(&buf, explanation, strlen(explanation));
fputs(buf.buf, s->fp);
strbuf_release(&buf);
}
run_diff_index(&rev, 1);
}

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@ -91,6 +91,7 @@ struct wt_status_state {
unsigned char cherry_pick_head_sha1[20];
};
void wt_status_truncate_message_at_cut_line(struct strbuf *);
void wt_status_prepare(struct wt_status *s);
void wt_status_print(struct wt_status *s);
void wt_status_collect(struct wt_status *s);