Re: [PATCH] emacs: Introduce notmuch-draftify-buffer command.

["Brennan Vincent" <brennan@umanwizard.com>]

David Bremner <david@tethera.net> writes:

> Brennan Vincent <brennan@umanwizard.com> writes:
>
>> This command inserts the current buffer as a draft. It optionally
>> begins editing the draft.
>
> [nice commit message snipped]
>
> Here again, if possible we would like a test. For emacs tests it is a
> bit more laborious, but there are several options outlined in
> test/
Done, will be in the next revision of the patch series.
>
>>  will appear in a buffer named \"*Notmuch errors*\" and an error
>> -will be signaled."
>> +will be signaled.
>> +
>> +Otherwise, returns the output from the process as a string."
>>    (with-temp-buffer
>> -    (let ((status (notmuch-call-notmuch--helper t args)))
>> -      (notmuch-check-exit-status status (cons notmuch-command args)
>> -				 (buffer-string)))))
>> +    (let ((status (notmuch-call-notmuch--helper t args))
>> +	  (output (buffer-string)))
>> +      (and (notmuch-check-exit-status status (cons notmuch-command args)
>> +				      output)
>> +	   output))))
>
> Is it clear / documented what the return value of
> notmuch-check-exit-status is? If all you mean is that it completes
> without error, I think "progn" is clearer than "and"
Done, will be in the next revision of the patch series.
>
>> +Returns the message ID of the inserted message."
>> +  (let ((output (apply 'notmuch-call-notmuch-process
>> +		       :stdin-string (buffer-string) "insert"
>> +		       (append (and create (list "--create-folder"))
>> +			       (list (concat "--folder=" folder)
>> +				     "--emit-message-id")
>> +			       tags))))
>> +    (string-trim output)))
>
> One problem we have is that people merrily upgrade the emacs front end
> without updating the CLI. Recently (see devel/schemata) we have started
> bumping the output version for new command arguments, so at least the
> error reporting is clear.
That won't work here, since `notmuch insert` doesn't accept
--format-version at all, so people using older versions of the CLI would
just get an obscure error about --format-version being an unrecognized
arg.

What we can do is in notmuch-check-exit-status, search the error output
for "Unrecognized option: --emit-message-id" and translate it to
something friendlier. Searching for specific strings in error message is
a bit unsatisfying to me, but at least it works (and correct me if I'm
wrong, but I don't think notmuch has been localized to languages other
than English which would break it).

What do you think?

(Btw, I think in the future it would be good to make all commands accept
--format-version, even those whose output doesn't change today, to avoid
this sort of issue).
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