bug#65884: 29.1; prettify-symbols-unprettify-at-point documentation

[Stefan Kangas]

Version: 29.2

Peter Mao <peter.mao@gmail.com> writes:

> I just learned about prettify-symbols mode and 
> prettify-symbols-unprettify-at-point from Tony Zorman's recent blog post, so 
> I tried it out, unsuccessfully
> at first...
>
> Recipe from emacs -Q:
>
> In the *scratch* buffer:
> M-x prettify-symbols-mode
> (setq prettify-symbols-unprettify-at-point t)
> C-x C-e ;; to evaluate the setq
> lambda  ;; the symbol λ appears
> C-b
>
> At this point, I'm expecting the symbol λ to deprettify back to
> "lambda", but it does not.
>
> Looking in the code in prog-mode.el, I see that the unprettification
> needs to be set **before** the minor mode is activated in the buffer.
> Perhaps this should be pointed out in the documentation?

Thanks, I've now documented this on emacs-29.