Re: [PATCH] Fix for a merge where a branch has an F->D transition

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2009/5/20 Johannes Schindelin <Johannes.Schindelin@xxxxxx>:
> On Mon, 11 May 2009, Alex Riesen wrote:
>
>> Some path names which transitioned from file to a directory were not
>> updated in the final part of the merge (loop around unmerged entries in
>> merge_trees), because the branch in process_renames which filtered out
>> updates for the files with the same content ("merged same as existing")
>> has left the rename entry in processed state. In this case, the
>> processing cannot be finished at the process_renames phase (because
>> the old file still blocks creation of directory where new files should
>> appear), and must be postponed until the update_entry phase.
>
> I know that as a German, I am supposed to like long sentences and crowded
> paragraphs.  Maybe I am not that German after all.
>

Will be shortened.

>> diff --git a/merge-recursive.c b/merge-recursive.c
>> index a3721ef..3c5420b 100644
>> --- a/merge-recursive.c
>> +++ b/merge-recursive.c
>> @@ -980,14 +980,15 @@ static int process_renames(struct merge_options *o,
>>
>>                               if (mfi.clean &&
>>                                   sha_eq(mfi.sha, ren1->pair->two->sha1) &&
>> -                                 mfi.mode == ren1->pair->two->mode)
>> +                                 mfi.mode == ren1->pair->two->mode) {
>>                                       /*
>>                                        * This messaged is part of
>>                                        * t6022 test. If you change
>>                                        * it update the test too.
>>                                        */
>>                                       output(o, 3, "Skipped %s (merged same as existing)", ren1_dst);
>> -                             else {
>> +                                     ren1->dst_entry->processed = 0;
>> +                             } else {
>
> So basically, you say that a dst_entry has not been processed, when it
> _has_ been?  That cannot be correct...
>

My feeling exactly. I'm afraid I just zeroed the effect of the branch
which should avoid rewriting of files with known same content.
It's just that the code has grown a little confusing...
I'm still thinking about how to avoid unneeded rewrites of the files
with same content under same name.
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