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From: | Dmitry Gutov |
Subject: | Re: CC Mode in MMM Mode(s). |
Date: | Fri, 8 Dec 2017 01:43:18 +0200 |
User-agent: | Mozilla/5.0 (X11; Linux x86_64; rv:58.0) Gecko/20100101 Thunderbird/58.0 |
On 12/7/17 9:49 PM, Richard Stallman wrote:
[[[ To any NSA and FBI agents reading my email: please consider ]]] [[[ whether defending the US Constitution against all enemies, ]]] [[[ foreign or domestic, requires you to follow Snowden's example. ]]] Why does MMM use overlays, rather than text properties?
- No need to worry about putting the buffer into a modified state.- Overlays expand when you insert some text inside. By default, mmm-mode doesn't re-parse the buffer into submode chunks automatically (probably because of performance concerns, more apparent back in the day), so that was probably useful.
- Overlays have properties. It's a more meaningful data structure, I guess. Easier to build with.
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