Re: [Emacs-diffs] master 934a72c: User can specify files never subject to flymake.

[joaotavora@gmail.com (João Távora)]

Sam Steingold <sds@gnu.org> writes:

>> * Stefan Monnier <zbaavre@veb.hzbagerny.pn> [2017-11-02 16:59:23 -0400]:
>>
>>>>> * lisp/progmodes/flymake-proc.el (flymake-proc-ignored-file-name-regexps):
>>>>> Add user customization option.
>>>> Shouldn't this be in flymake.el and apply to all flymake backends
>>>> rather than only those using flymake-proc?
>>> You might be right, but I don't see any place in flymake.el where file
>>> names are processed.
>>
>> Hmm... indeed.  I guess the right thing depends on what's the use-case.
>> Could you describe the kind of situation in which you need
>> flymake-proc-ignored-file-name-regexps?
>
> I have files scratch.py which are somewhat like a poor man's notebook,
> with random snippets of code which persist from session to session.
> flymake using pylint will flag most lines in such files.
>
> So I have this in my .emacs:
>
> (eval-when-compile (defvar flymake-proc-ignored-file-name-regexps))
> (eval-after-load "flymake"
>   '(add-to-list 'flymake-proc-ignored-file-name-regexps '"/scratch"))

[Curious, why do you the defvar? Is the FORM of eval-after-load
byte-compiled?]

Such a facility to disable flymake could be in flymake.el, but perhaps
it is better if it was already elsewhere in Emacs.

A file-local or dir-local variable seems most logical, and setting
flymake-diagnostic-functions to nil appears to work (minus the fact that
it complains to be risky even for nil values, which could I think be
changed).

Personally, I would set this variable in my mini-python-scratchpads. But
if you must do this by filename matching, I wonder if dir-local
variables allows that, or if even if we could conjure up some type of
regexp-local variables.

João