From: Johannes Schindelin Date: Thu, 29 Nov 2018 08:32:48 GMT Subject: Re: [PATCH] rebase -i: introduce the 'test' command Message-ID: In-Reply-To: <25e07b91-3089-153c-2ecf-7d2d66bc3b65@gmail.com> Hi Paul, On Wed, 28 Nov 2018, Paul Morelle wrote: > On 28/11/18 16:19, Johannes Schindelin wrote: > > > > On Wed, 28 Nov 2018, Paul Morelle wrote: > > > >> The 'exec' command can be used to run tests on a set of commits, > >> interrupting on failing commits to let the user fix the tests. > >> > >> However, the 'exec' line has been consumed, so it won't be ran again by > >> 'git rebase --continue' is ran, even if the tests weren't fixed. > >> > >> This commit introduces a new command 'test' equivalent to 'exec', except > >> that it is automatically rescheduled in the todo list if it fails. > >> > >> Signed-off-by: Paul Morelle > > Would it not make more sense to add a command-line option (and a config > > setting) to re-schedule failed `exec` commands? Like so: > > Your proposition would do in most cases, however it is not possible to > make a distinction between reschedulable and non-reschedulable commands. True. But I don't think that's so terrible. What I think is something to avoid is two commands that do something very, very similar, but with two very, very different names. In reality, I think that it would even make sense to change the default to reschedule failed `exec` commands. Which is why I suggested to also add a config option. > Do you think that we can ignore the distinction between reschedulable > and non-reschedulable commands in the same script? Yes, I think that there *should not* be any distinction. It would just make it harder to use the feature (users would have to keep in mind that one version reschedules, one version does not). > In this case, I would add some tests to your patch below, and propose > the result on this mailing list. I already added a test... See the reschedule-failed-exec branch on https://github.com/dscho/git. And I had another idea. To make this feature more useful for *myself*, I would like to introduce the `-X` option as a shortcut for `--reschedule-failed-exec -x`, e.g. git rebase -X "make -j15 test" What do you think? Johannes > > > -- snip -- > > diff --git a/builtin/rebase--interactive.c b/builtin/rebase--interactive.c > > index a2ab68ed0632..a9ab009fdbca 100644 > > --- a/builtin/rebase--interactive.c > > +++ b/builtin/rebase--interactive.c > > @@ -192,6 +192,8 @@ int cmd_rebase__interactive(int argc, const char **argv, const char *prefix) > > OPT_STRING(0, "onto-name", &onto_name, N_("onto-name"), N_("onto name")), > > OPT_STRING(0, "cmd", &cmd, N_("cmd"), N_("the command to run")), > > OPT_RERERE_AUTOUPDATE(&opts.allow_rerere_auto), > > + OPT_BOOL(0, "reschedule-failed-exec", &opts.reschedule_failed_exec, > > + N_("automatically re-schedule any `exec` that fails")), > > OPT_END() > > }; > > > > diff --git a/builtin/rebase.c b/builtin/rebase.c > > index 5b3e5baec8a0..700cbc4e150e 100644 > > --- a/builtin/rebase.c > > +++ b/builtin/rebase.c > > @@ -104,6 +104,7 @@ struct rebase_options { > > int rebase_merges, rebase_cousins; > > char *strategy, *strategy_opts; > > struct strbuf git_format_patch_opt; > > + int reschedule_failed_exec; > > }; > > > > static int is_interactive(struct rebase_options *opts) > > @@ -415,6 +416,8 @@ static int run_specific_rebase(struct rebase_options *opts) > > argv_array_push(&child.args, opts->gpg_sign_opt); > > if (opts->signoff) > > argv_array_push(&child.args, "--signoff"); > > + if (opts->reschedule_failed_exec) > > + argv_array_push(&child.args, "--reschedule-failed-exec"); > > > > status = run_command(&child); > > goto finished_rebase; > > @@ -903,6 +906,9 @@ int cmd_rebase(int argc, const char **argv, const char *prefix) > > "strategy")), > > OPT_BOOL(0, "root", &options.root, > > N_("rebase all reachable commits up to the root(s)")), > > + OPT_BOOL(0, "reschedule-failed-exec", > > + &options.reschedule_failed_exec, > > + N_("automatically re-schedule any `exec` that fails")), > > OPT_END(), > > }; > > int i; > > @@ -1195,6 +1201,9 @@ int cmd_rebase(int argc, const char **argv, const char *prefix) > > break; > > } > > > > + if (options.reschedule_failed_exec && !is_interactive(&options)) > > + die(_("--reschedule-failed-exec requires an interactive rebase")); > > + > > if (options.git_am_opts.argc) { > > /* all am options except -q are compatible only with --am */ > > for (i = options.git_am_opts.argc - 1; i >= 0; i--) > > diff --git a/sequencer.c b/sequencer.c > > index e1a4dd15f1a8..69bee63e116f 100644 > > --- a/sequencer.c > > +++ b/sequencer.c > > @@ -158,6 +158,7 @@ static GIT_PATH_FUNC(rebase_path_strategy, "rebase-merge/strategy") > > static GIT_PATH_FUNC(rebase_path_strategy_opts, "rebase-merge/strategy_opts") > > static GIT_PATH_FUNC(rebase_path_allow_rerere_autoupdate, "rebase-merge/allow_rerere_autoupdate") > > static GIT_PATH_FUNC(rebase_path_quiet, "rebase-merge/quiet") > > +static GIT_PATH_FUNC(rebase_path_reschedule_failed_exec, "rebase-merge/reschedule-failed-exec") > > > > static int git_sequencer_config(const char *k, const char *v, void *cb) > > { > > @@ -2362,6 +2363,9 @@ static int read_populate_opts(struct replay_opts *opts) > > opts->signoff = 1; > > } > > > > + if (file_exists(rebase_path_reschedule_failed_exec())) > > + opts->reschedule_failed_exec = 1; > > + > > read_strategy_opts(opts, &buf); > > strbuf_release(&buf); > > > > @@ -2443,6 +2447,8 @@ int write_basic_state(struct replay_opts *opts, const char *head_name, > > write_file(rebase_path_gpg_sign_opt(), "-S%s\n", opts->gpg_sign); > > if (opts->signoff) > > write_file(rebase_path_signoff(), "--signoff\n"); > > + if (opts->reschedule_failed_exec) > > + write_file(rebase_path_reschedule_failed_exec(), "%s", ""); > > > > return 0; > > } > > @@ -3586,9 +3592,10 @@ static int pick_commits(struct todo_list *todo_list, struct replay_opts *opts) > > *end_of_arg = saved; > > > > /* Reread the todo file if it has changed. */ > > - if (res) > > - ; /* fall through */ > > - else if (stat(get_todo_path(opts), &st)) > > + if (res) { > > + if (opts->reschedule_failed_exec) > > + reschedule = 1; > > + } else if (stat(get_todo_path(opts), &st)) > > res = error_errno(_("could not stat '%s'"), > > get_todo_path(opts)); > > else if (match_stat_data(&todo_list->stat, &st)) { > > diff --git a/sequencer.h b/sequencer.h > > index 5071a73563f1..1f865dae2618 100644 > > --- a/sequencer.h > > +++ b/sequencer.h > > @@ -39,6 +39,7 @@ struct replay_opts { > > int allow_empty_message; > > int keep_redundant_commits; > > int verbose; > > + int reschedule_failed_exec; > > > > int mainline; > > > > -- snap -- > > > > That would avoid your having to add a `--test` option accompanying the `--exec` > > option (which is missing from your patch). > > You are right about the missing `--test` option, which I could also add > to a new version of this patch. > > Cheers, > Paul > > > Ciao, > > Johannes > > > >> --- > >> Documentation/git-rebase.txt | 9 ++++++--- > >> rebase-interactive.c | 1 + > >> sequencer.c | 23 +++++++++++++++-------- > >> t/lib-rebase.sh | 4 +++- > >> t/t3404-rebase-interactive.sh | 16 ++++++++++++++++ > >> 5 files changed, 41 insertions(+), 12 deletions(-) > >> > >> diff --git a/Documentation/git-rebase.txt b/Documentation/git-rebase.txt > >> index 80793bad8..c8f565637 100644 > >> --- a/Documentation/git-rebase.txt > >> +++ b/Documentation/git-rebase.txt > >> @@ -693,8 +693,8 @@ $ git rebase -i -p --onto Q O > >> Reordering and editing commits usually creates untested intermediate > >> steps. You may want to check that your history editing did not break > >> anything by running a test, or at least recompiling at intermediate > >> -points in history by using the "exec" command (shortcut "x"). You may > >> -do so by creating a todo list like this one: > >> +points in history by using the "exec" command (shortcut "x") or the > >> +"test" command. You may do so by creating a todo list like this one: > >> ------------------------------------------- > >> pick deadbee Implement feature XXX > >> @@ -702,7 +702,7 @@ fixup f1a5c00 Fix to feature XXX > >> exec make > >> pick c0ffeee The oneline of the next commit > >> edit deadbab The oneline of the commit after > >> -exec cd subdir; make test > >> +test cd subdir; make test > >> ... > >> ------------------------------------------- > >> @@ -715,6 +715,9 @@ in `$SHELL`, or the default shell if `$SHELL` is > >> not set), so you can > >> use shell features (like "cd", ">", ";" ...). The command is run from > >> the root of the working tree. > >> +The "test" command does the same, but will remain in the todo list as > >> +the next command, until it succeeds. > >> + > >> ---------------------------------- > >> $ git rebase -i --exec "make test" > >> ---------------------------------- > >> diff --git a/rebase-interactive.c b/rebase-interactive.c > >> index 78f3263fc..4a408661d 100644 > >> --- a/rebase-interactive.c > >> +++ b/rebase-interactive.c > >> @@ -14,6 +14,7 @@ void append_todo_help(unsigned edit_todo, unsigned > >> keep_empty, > >> "s, squash = use commit, but meld into previous commit\n" > >> "f, fixup = like \"squash\", but discard this commit's log > >> message\n" > >> "x, exec = run command (the rest of the line) using shell\n" > >> +" test = same as exec command, but keep it in TODO if it > >> fails\n" > >> "b, break = stop here (continue rebase later with 'git rebase > >> --continue')\n" > >> "d, drop = remove commit\n" > >> "l, label