Re: [PATCH v6 03/42] refs.c: add a strbuf argument to ref_transaction_commit for error logging

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Thanks.
Comment added and whitespace fixed.

On Tue, May 13, 2014 at 4:10 PM, Jonathan Nieder <jrnieder@xxxxxxxxx> wrote:
> Ronnie Sahlberg wrote:
>
>> Add a strbuf argument to _commit so that we can pass an error string back to
>> the caller. So that we can do error logging from the caller instead of from
>> _commit.
>>
>> Longer term plan is to first convert all callers to use onerr==QUIET_ON_ERR
>> and craft any log messages from the callers themselves and finally remove the
>> onerr argument completely.
>
> Very nice.
>
> [...]
>> +++ b/refs.c
> [...]
>> @@ -3443,6 +3444,9 @@ int ref_transaction_commit(struct ref_transaction *transaction,
>>                                              update->flags,
>>                                              &update->type, onerr);
>>               if (!update->lock) {
>> +                     if (err)
>> +                             strbuf_addf(err ,"Cannot lock the ref '%s'.",
>> +                                         update->refname);
>
> Tiny nit: whitespace.
>
> [...]
>> --- a/refs.h
>> +++ b/refs.h
>> @@ -268,9 +268,12 @@ void ref_transaction_delete(struct ref_transaction *transaction,
>>   * Commit all of the changes that have been queued in transaction, as
>>   * atomically as possible.  Return a nonzero value if there is a
>>   * problem.  The ref_transaction is freed by this function.
>> + * If err is non-NULL we will add an error string to it to explain why
>> + * the transaction failed.
>
> Probably worth mentioning the error string doesn't end with a newline
> so the caller knows how to use it.
>
> With the whitespace fix and with or without the comment tweak,
> Reviewed-by: Jonathan Nieder <jrnieder@xxxxxxxxx>
>
> diff --git i/refs.c w/refs.c
> index 64e8feb..2ca3169 100644
> --- i/refs.c
> +++ w/refs.c
> @@ -3445,7 +3445,7 @@ int ref_transaction_commit(struct ref_transaction *transaction,
>                                                &update->type, onerr);
>                 if (!update->lock) {
>                         if (err)
> -                               strbuf_addf(err ,"Cannot lock the ref '%s'.",
> +                               strbuf_addf(err, "Cannot lock the ref '%s'.",
>                                             update->refname);
>                         ret = 1;
>                         goto cleanup;
> diff --git i/refs.h w/refs.h
> index ff87e14..d45212f 100644
> --- i/refs.h
> +++ w/refs.h
> @@ -268,8 +268,8 @@ void ref_transaction_delete(struct ref_transaction *transaction,
>   * Commit all of the changes that have been queued in transaction, as
>   * atomically as possible.  Return a nonzero value if there is a
>   * problem.  The ref_transaction is freed by this function.
> - * If err is non-NULL we will add an error string to it to explain why
> - * the transaction failed.
> + * If err is non-NULL we will append an error string (with no trailing
> + * newline) to it to explain why the transaction failed.
>   */
>  int ref_transaction_commit(struct ref_transaction *transaction,
>                            const char *msg, struct strbuf *err,
--
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