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Re: overlays?
From: |
Stefan |
Subject: |
Re: overlays? |
Date: |
Wed, 19 Mar 2014 08:29:59 -0400 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/24.3.50 (gnu/linux) |
>> So an overlay could possibly be better for "the first five lines of the
>> buffer" than font-lock.
This makes no sense: You can't oppose "font-lock" and "overlays",
really, because they are by nature different beasts.
`font-lock' is a library that puts "things" on some parts of the buffer
to change their appearance (color, font, size, ...). hi-lock is another
library that does the same, tho it is meant to be used differently (the
rules specifying what-to-put-where are typically specified interactively
in hi-lock whereas they are typically specified once and for all by the
major-mode author for font-lock, so they can be more complex).
Emacs offers to kinds of "things" that can be used for that purpose:
text-properties and overlays. These *are* comparable (e.g. font-lock
uses text-properties, but it could use overlays instead).
Stefan