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status: do not report errors in sequencer/todo 

commit 4a72486de9 ("fix cherry-pick/revert status after commit",
2019-04-16) used parse_insn_line() to parse the first line of the todo
list to check if it was a pick or revert. However if the todo list is
left over from an old cherry-pick or revert and references a commit that
no longer exists then parse_insn_line() prints an error message which is
confusing for users [1]. Instead parse just the command name so that the
user is alerted to the presence of stale sequencer state by status
reporting that a cherry-pick or revert is in progress.

Note that we should not be leaving stale sequencer state lying around
(or at least not as often) after commit b07d9bfd17 ("commit/reset: try
to clean up sequencer state", 2019-04-16). However the user may still
have stale state that predates that commit.

Also avoid printing an error message if for some reason the user has a
file called `sequencer` in $GIT_DIR.

[1] https://public-inbox.org/git/3bc58c33-4268-4e7c-bf1a-fe349b3cb037@www.fastmail.com/

Reported-by: Espen Antonsen <espen@inspired.no>
Signed-off-by: Phillip Wood <phillip.wood@dunelm.org.uk>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Phillip Wood 2019-06-27 07:12:46 -07:00 committed by Junio C Hamano
parent 3e81bccdf3
commit ed5b1ca10b
2 changed files with 24 additions and 16 deletions
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24
sequencer.c
View File

@ -2177,34 +2177,26 @@ static int parse_insn_line(struct repository *r, struct todo_item *item,
int sequencer_get_last_command(struct repository *r, enum replay_action *action)
{
struct todo_item item;
char *eol;
const char *todo_file;
const char *todo_file, *bol;
struct strbuf buf = STRBUF_INIT;
int ret = -1;
int ret = 0;
todo_file = git_path_todo_file();
if (strbuf_read_file(&buf, todo_file, 0) < 0) {
if (errno == ENOENT)
if (errno == ENOENT || errno == ENOTDIR)
return -1;
else
return error_errno("unable to open '%s'", todo_file);
}
eol = strchrnul(buf.buf, '\n');
if (buf.buf != eol && eol[-1] == '\r')
eol--; /* strip Carriage Return */
if (parse_insn_line(r, &item, buf.buf, buf.buf, eol))
goto fail;
if (item.command == TODO_PICK)
bol = buf.buf + strspn(buf.buf, " \t\r\n");
if (is_command(TODO_PICK, &bol) && (*bol == ' ' || *bol == '\t'))
*action = REPLAY_PICK;
else if (item.command == TODO_REVERT)
else if (is_command(TODO_REVERT, &bol) &&
(*bol == ' ' || *bol == '\t'))
*action = REPLAY_REVERT;
else
goto fail;
ret = -1;
ret = 0;
fail:
strbuf_release(&buf);
return ret;

16
t/t7512-status-help.sh
View File

@ -798,6 +798,22 @@ EOF
test_i18ncmp expected actual
'
test_expect_success 'status shows cherry-pick with invalid oid' '
mkdir .git/sequencer &&
test_write_lines "pick invalid-oid" >.git/sequencer/todo &&
git status --untracked-files=no >actual 2>err &&
git cherry-pick --quit &&
test_must_be_empty err &&
test_i18ncmp expected actual
'
test_expect_success 'status does not show error if .git/sequencer is a file' '
test_when_finished "rm .git/sequencer" &&
test_write_lines hello >.git/sequencer &&
git status --untracked-files=no 2>err &&
test_must_be_empty err
'
test_expect_success 'status showing detached at and from a tag' '
test_commit atag tagging &&
git checkout atag &&