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bug#25511: 26.0.50; modify-frame-parameters modifies undesignated parame

From: martin rudalics
Subject: bug#25511: 26.0.50; modify-frame-parameters modifies undesignated parameter?
Date: Tue, 06 Jun 2017 08:38:26 +0200

>>> Is there something more to do with this bug?
>> Is there something more to do with bug#25521?
> Just the question of whether we should add back some delay after frame
> creation, the original problem there is easily fixed by changing the
> user code.  I gather from your question that it's the same for this bug?

Yes.  Problems in this area have existed for a long time.  Practically
all of them result from code using ‘make-frame’ followed by code that
immediately tries to read or modify properties of the frame to create.
For example, Bug#25511 has

(let ((frame (make-frame)))
  (modify-frame-parameters frame ...

while Bug#25521 has

  (make-frame '((name . "foo")
  (select-frame-by-name "foo")

and, for example, Bug#25943 has

  (let  ((simple-frame   (make-frame  `((name       . "Simple Frame")
          (while  (progn
                    (set-frame-size  simple-frame ...

IIRC there were more similar reports.  BTW Bug#25943 was reported for an
Emacs 25.1 GTK build hence before you removed the delay to fix Bug#24091.

We could introduce some customizable delay and, whenever a bug in this
area is reported, tell people to increase that delay.  If the bug does
not disappear after the delay has gotten pretty large, we have a more
nasty problem.  Otherwise, we have perfidiously shifted responsibility
to the user.


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