Re: master c9a8a47ba4: Add new user option 'yank-transform-functions'

[Lars Ingebrigtsen]

Stefan Monnier <monnier@iro.umontreal.ca> writes:

>>     * lisp/simple.el (yank-transform-functions): New user option.
>>     (yank): Mention it.
>
> Hmm... why is this a user option?
> [ Also, tho less importantly: Why is it a list of functions instead of
>   being symmetric with Emacs-28's `kill-transform-function`?  ]
>
> Are users expected to be able to make use of this with Custom?  How?

It's a list of functions because it's a defcustom, really.  I envisioned
that people might be wanting to add other things to it to (say) record
yanked text, for instance.

>> +@lisp
>> +(defun yank-with-clean-whitespace ()
>> +  (interactive)
>> +  (let ((yank-transform-functions
>> +     '(string-clean-whitespace)))
>> +    (call-interactively #'yank)))
>> +@end lisp
>> +@end defopt
>
> This example doesn't call for a `defcustom` but for a `defvar`, no?

It's in the lispref manual.

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