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bug#19107: 25.0.50; emacs-lisp-mode: help-echo in font-lock-extra-manage
From: |
Drew Adams |
Subject: |
bug#19107: 25.0.50; emacs-lisp-mode: help-echo in font-lock-extra-managed-props |
Date: |
Fri, 11 Mar 2016 07:57:00 -0800 (PST) |
> >> I confirm this is apparently still true on ac9a931, but I don't see why
> >> it's a problem. Could you elaborate a bit? What exactly breaks? What
> >> is your non-font-lock use of help-echo?
> >
> > Marcin, are you actually asking whether `help-echo' can or
> > should be used without font-lock? If so, the answer is YES.
>
> OK. I didn't know (and still don't) what help-echo is for, hence my
> question. (And I even don't know how to ask Emacs that question, aside
> from grepping the source.)
`C-h i' Elisp
`i help-echo TAB' shows you these nodes:
1. help-echo (overlay property)
2. help-echo (text property)
3. help-echo, customization keyword
4. 'help-echo' event
(Visiting #1 also presents a link to node `Text help-echo', which
is apparently misdirected. See bug #22986.)
(TAB will not show you #4 unless you have substring completion.
See bug #22987. I use Icicles and `S-TAB' to see the candidates.)
If you visit those nodes you will learn how `help-echo' is used and
how you can use it yourself in your code. If you find that the doc
for this is not clear enough please consider filing a bug report to
improve it. Thx.