Re: [PATCH v2 1/2] commit: allow editing the commit message even in shared repos

> On Wed, Jan 06, 2016 at 02:09:43PM +0100, Johannes Schindelin wrote:
>
>> It was pointed out by Yaroslav Halchenko that the file containing the
>> commit message is writable only by the owner, which means that we have
>> to rewrite it from scratch in a shared repository.
>> [...]
>> diff --git a/wrapper.c b/wrapper.c
>> index b43d437..29a45d2 100644
>> --- a/wrapper.c
>> +++ b/wrapper.c
>> @@ -391,6 +391,19 @@ FILE *xfdopen(int fd, const char *mode)
>>  	return stream;
>>  }
>>  
>> +FILE *fopen_for_writing(const char *path)
>> +{
>> +	FILE *ret = fopen(path, "w");
>> +
>> +	if (!ret && errno == EPERM) {
>> +		if (!unlink(path))
>> +			ret = fopen(path, "w");
>> +		else
>> +			errno = EPERM;
>> +	}
>> +	return ret;
>> +}
>
> Thanks, this looks good to me. Having seen the implementation, it really
> is just "try harder to fopen()".  I guess calling it "fopen_me_harder()"
> would be too obscure. :)