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bug#18343: 24.4.50; REGRESSION: `help-echo' property is not added, so no
From: |
Drew Adams |
Subject: |
bug#18343: 24.4.50; REGRESSION: `help-echo' property is not added, so no tooltip or echo |
Date: |
Sun, 1 May 2016 08:52:58 -0800 (GMT-08:00) |
> > Why should `help-echo' be on `font-lock-extra-managed-props'?
>
> I guess the reason is to allow font-lock to propertize parts of the
> buffer with this property. This issue is a (presumably not trivially
> avoidable) side effect.
By "allow font-lock to propertize parts of the buffer with this
property" do you mean allow it to propertize, with faces, parts
of the buffer that happen to have property `help-echo'? Or do
you mean allow it to add property `help-echo' parts of the buffer?
If the latter, what is the use case for font-lock doing that?
I'll assume you meant the former -
In that case, why not trivially avoidable? Why not tell font-lock
hands-off this property, which has nothing to do with highlighting?
Until the recent change that caused this regression, property
`help-echo' was not on the list `font-lock-extra-managed-props'.
Is it clear to you why it needs to be on that list? It's not
clear to me.