History of a source line

[John Arbash Meinel]

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Eli Zaretskii wrote:
> Is there any bzr commands or plugins that can show all the revisions
> that changed a certain source line?
> 
> Many times I need to do some forensic research to understand why some
> code is written like it is.  With a large and old package such as
> Emacs, the origins of some code fragments are lost in time.  It is
> easy to see the last change with "bzr annotate" and "bzr diff -c", but
> if you want to see beyond that, you need to grep ChangeLog files, look
> for the revisions corresponding to the entries you _think_ may be
> relevant, and that's a tedious and boring job.  And if you are unlucky
> and the ChangeLog entry was not made at the time, it becomes an almost
> impossible job, certainly an impractical one.
> 
> Does Bazaar offer any cure for this?
> 
> TIA
> 
> 

 bzr qannotate
and
 bzr gannotate

Both support viewing the current annotation, and stepping back through
history for the file as it was modified over time.

You can use "bzr log -p FILE" to see the diffs for the file every time
it was modified, but this doesn't filter based on the line you are
investigating.

John
=:->
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