Re: [PATCH v2 4/8] merge-tree: implement real merges

[Junio C Hamano <gitster@pobox.com>]

Elijah Newren <newren@gmail.com> writes:

>>    'git merge-tree' [--write-tree] <branch1> <branch2>
>>    'git merge-tree' [--demo-trivial-merge] <base-tree> <branch1> <branch2>
>>
>> That way, the old mode can still function, and can even at some stage be
>> deprecated and eventually removed.
>
> Ooh, interesting.

I wondered if we can _also_ extend the trivial-merge mode so that we
do not have to call it "demo".

The internal result is expressed in this way:

    struct merge_list {
            struct merge_list *next;
            struct merge_list *link;	/* other stages for this object */

            unsigned int stage : 2;
            unsigned int mode;
            const char *path;
            struct blob *blob;
    };

because the command was not designed to resolve content level
merges, but show the half-resolved state with the "stage" number.
The "explanation" the command gives on the result is truly trivial,
but there is no reason for it to stay that way.