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Re: VC top of the tree diff and log

From: Miles Bader
Subject: Re: VC top of the tree diff and log
Date: Wed, 02 Sep 2009 13:13:43 +0900

Dan Nicolaescu <address@hidden> writes:
>   > Have you tried to run `vc-print-root-log' on the Emacs repository?
>   > I waited for several minutes and eventually abandoned the attempt.
> No, I only have the CVS one handy.
> But I've tried it on other things that have lots of lines, and yes it's
> slow.  See the "slow output" bugs/threads, they have been partially
> motivated by this. 
>   > We could provide a numeric prefix argument for vc print logs
>   > to limit the number of commits to show.  I mean translating it
>   > to the git command like "git-log -2".
> Yes, I have considered limiting the size of the log output, it needs to
> apply not only to the root log, but also to C-x v l.   But I
> don't know what the best thing to do here... :-(

What's the slowdown anyway?  The underlying git command, invoked via
`shell-command' (with output inserted into an emacs buffer) is almost

Is it because it's trying to fontify and add text-props or overlays to
the entire buffer?

If that's the problem, it would obviously be _much_ more efficient to
use jit-lock or whatever, since people typically only look at like the
first 1% of such log output (if that!)...


Suburbia: where they tear out the trees and then name streets after them.

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