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Re: Tick Reduction

From: Lars Ingebrigtsen
Subject: Re: Tick Reduction
Date: Tue, 23 Nov 2021 14:49:38 +0100
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/29.0.50 (gnu/linux)

Eli Zaretskii <eliz@gnu.org> writes:

> The value of 'display' property can be either a single spec, or a list
> or vector of specs.  Thus, adding should be trivial: either add
> another list member or produce a new vector with one more element.  Do
> you think this justifies a dedicated API?

To add a `max-width' to a series of characters, it first has to see
whether there's any other bits with a `display' property.  Then if it
finds sequences of characters like that, it has to see whether there's
only one spec, and then to transform it to a list, and if not, it just
has to append.  And do this efficiently, so that we don't get a bunch of
short lists when there's different overlapping regions with `display'.

So, yes, I think this deserves a function.

(domestic pets only, the antidote for overdose, milk.)
   bloggy blog: http://lars.ingebrigtsen.no

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