[RFI] Annotations cache & progressive display of annotations

[John Arbash Meinel]

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Stefan Monnier wrote:
>> It's a bit interesting to consider how this would happen in Emacs but
>> you could possibly emit a text stream of linenumber:origin_details
>> that emacs could reassemble.
> 
> That could work, indeed.  Thanks for thinking of the Emacs case.
> 
> BTE, while we're on the subject, I'd like to push yet again for the
> introduction of a different feature that could be used instead of
> "annotate": a "bzr log --diffs --lines NN..MM FILE" which would show the
> log history not of a complete file, but only of a particular region of
> that file (and show the diffs alongside the log-messages).
> 
> Usually, when I use "annotate" it is really just a way to manually build
> the above log.  More specifically I always end up doing:
> 1- annotate
> 2- find the revision number for the lines of interest
> 3- get the log and diff of that revision
> 4- if the problem comes from the code before that patch (because the patch
>    just reindents or performs some unrelated change), go back to (1)
>    applied to the earlier revision.
> 
> This clearly could be created incrementally going backward in time, just
> like any other "bzr log" and would be more useful to me than `annotate'.
> I'd even settle for (or maybe prefer) a command that only does one step
> of the above loop.  I could even code it up in Emacs if Bzr could
> provide some way to get the revision number of a particular line (or
> set of lines).
> 
> 
>         Stefan
> 

bzr annotate --show-ids will give you the revision ids which introduced
a given line. (at the cost of annotating the whole file)

I'm not really sure why you couldn't just do "bzr log -p FILE" and then
filter out the diffs that did not affect the lines you cared about.
(Given that that is all that --lines NN..MM would really be doing.)

John
=:->
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