Re: [PATCH 4/7] builtin/describe.c: print debug statements earlier

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On Tue, Oct 31, 2017 at 12:03 AM, Junio C Hamano <gitster@xxxxxxxxx> wrote:
> Stefan Beller <sbeller@xxxxxxxxxx> writes:
>
>> For debuggers aid we'd want to print debug statements early, so
>> introduce a new line in the debug output that describes the whole
>> function, and the change the next debug output to describe why we need
>> to search. Conveniently drop the arg from the second line; which will
>> be useful in a follow up commit, that refactors the describe function.
>>
>> Signed-off-by: Stefan Beller <sbeller@xxxxxxxxxx>
>> ---
>
> Adding an eary "entry" log may indeed be a good idea.  This is not a
> new issue, but I do not think it is a good trade-off to burden i18n
> teams to translate debug-only messages, though.

The original motivation here is to use the 'arg' argument so early in the
function that the next patch can omit passing in 'arg' as the lines
using 'arg' are not in the factored out function.

8713ab3079 (Improve git-describe performance by reducing
revision listing., 2007-01-13) added the --debug flag, and also
exposed it to the man page, so it is user visible, which is why we cannot
keep these messages untranslated.

>
>>  builtin/describe.c | 5 ++++-
>>  1 file changed, 4 insertions(+), 1 deletion(-)
>>
>> diff --git a/builtin/describe.c b/builtin/describe.c
>> index fd61f463cf..3136efde31 100644
>> --- a/builtin/describe.c
>> +++ b/builtin/describe.c
>> @@ -293,6 +293,9 @@ static void describe(const char *arg, int last_one)
>>       unsigned long seen_commits = 0;
>>       unsigned int unannotated_cnt = 0;
>>
>> +     if (debug)
>> +             fprintf(stderr, _("describe %s\n"), arg);
>> +
>>       if (get_oid(arg, &oid))
>>               die(_("Not a valid object name %s"), arg);
>>       cmit = lookup_commit_reference(&oid);
>> @@ -316,7 +319,7 @@ static void describe(const char *arg, int last_one)
>>       if (!max_candidates)
>>               die(_("no tag exactly matches '%s'"), oid_to_hex(&cmit->object.oid));
>>       if (debug)
>> -             fprintf(stderr, _("searching to describe %s\n"), arg);
>> +             fprintf(stderr, _("No exact match on refs or tags, searching to describe\n"));
>>
>>       if (!have_util) {
>>               struct hashmap_iter iter;



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