Junio C Hamano <[email protected]> writes:
> Sergey Organov <[email protected]> writes:
>
>> When cherry-picking multiple commits, it's impossible to have both
>> merge- and non-merge commits on the same command-line. Not specifying
>> '-m 1' results in cherry-pick refusing to handle merge commits, while
>> specifying '-m 1' fails on non-merge commits.
>

[...]

> Now, it appears, at least to me, that the world pretty much accepted
> that the first-parent worldview is often very convenient and worth
> supporting by the tool, so the next logical step might be to set
> opts->mainline to 1 by default (and allow an explicit "-m $n" from
> the command line to override it).  But that should happen after this
> patch lands---it is logically a separate step, I would think.
>

[...]

>> +    } else if (1 < opts->mainline)
>> +            /* Non-first parent explicitly specified as mainline for
>> +             * non-merge commit */
>
> Style.
>
>       /*
>        * Our multi-line comments are to be
>        * formatted like this.
>        */

Comment style fixed:

-- 8< --

When cherry-picking multiple commits, it's impossible to have both
merge- and non-merge commits on the same command-line. Not specifying
'-m 1' results in cherry-pick refusing to handle merge commits, while
specifying '-m 1' fails on non-merge commits.

This patch allows '-m 1' for non-merge commits. Besides, as mainline is
always the only parent for a non-merge commit, it made little sense to
disable it in the first place.

Signed-off-by: Sergey Organov <[email protected]>
---
 sequencer.c | 10 +++++++---
 1 file changed, 7 insertions(+), 3 deletions(-)

diff --git a/sequencer.c b/sequencer.c
index e1a4dd1..d0fd61b 100644
--- a/sequencer.c
+++ b/sequencer.c
@@ -1766,9 +1766,13 @@ static int do_pick_commit(enum todo_command command, 
struct commit *commit,
                        return error(_("commit %s does not have parent %d"),
                                oid_to_hex(&commit->object.oid), 
opts->mainline);
                parent = p->item;
-       } else if (0 < opts->mainline)
-               return error(_("mainline was specified but commit %s is not a 
merge."),
-                       oid_to_hex(&commit->object.oid));
+       } else if (1 < opts->mainline)
+               /*
+                *  Non-first parent explicitly specified as mainline for
+                *  non-merge commit
+                */
+               return error(_("commit %s does not have parent %d"),
+                            oid_to_hex(&commit->object.oid), opts->mainline);
        else
                parent = commit->parents->item;
 
-- 
2.10.0.1.g57b01a3

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