[MERGE][bug #232188] Simple update to annotate

[John Arbash Meinel]

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Robert Collins wrote:
> Robert Collins has voted approve.
> Status is now: Approved
> Comment:
> One thing we could do to prepare for more informative annotations is to
> assign a listof revids to a line, rather than a revid to a line.

I think that could certainly be interesting. It changes the core
annotation structure from being a list of tuples (origin, text) into
being a ([origins], text) or possibly some other structure. For example,
why not go ahead and track chunks of text at this point? (Possibly just
at multiples of lines.)

Certainly it might be less overhead, and might lend itself better to an
annotation cache. Though you probably would then need logic to split
groups, etc, so it isn't specifically simpler.

I think it would be a good idea, I just think it is more of an overhaul
than a simple switch.

John
=:->

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