Re: CC Mode in MMM Mode(s).

[Dmitry Gutov]

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.