bug#24622: 26.0.50; lisp-fill-paragraph broken

[martin rudalics]

>>      Don't consider colons to be paragraphs starting chars in strings
>>
>>      * lisp/emacs-lisp/lisp-mode.el (lisp-fill-paragraph): Don't
>>      consider colons to start paragraphs in (doc) strings
>>      (bug#7751).
>>
>> breaks filling doc-strings of defcustoms.  As an example consider the
>> defcustom of ‘window-min-height’ in window.el:
>
> I've included a diff below that appears to solve both bug#7751 and this
> one, though I can't guarantee that it doesn't blow something else up.
> Does anyone have any complaints?
>
> In any case, I think this bug should be solved before 26.1 is released.

I obviously think so too.  Lars, how do we proceed here?  I'd vote
for checking in Alex's patch.

martin