[PATCH] commands: add support for 'hg log -b .' (issue2078)

[Matt Mackall]

On Mon, 2010-04-12 at 19:35 -0400, Steve Losh wrote:
> # HG changeset patch
> # User Steve Losh <steve at stevelosh.com>
> # Date 1271115205 14400
> # Node ID 1af118b5a168a1284eada2e993f1177d9f144bd6
> # Parent  3a1a1077f1777396ffbaba9c0cfc307af17ccc36
> commands: add support for 'hg log -b .' (issue2078)
> 
> Fixes issue2078 and adds tests to cover various 'hg log -b' uses.
> 
> The long line just barely passes check-code, but there might be a better way
> to do it.

I think this should be more generic. '-b .' should read as 'the branch
that the working directory is on' so '-b <rev>' should similarly read as
'the branch <rev>' is on. In other words:

branch = repo[rev].branch()

And this should eventually work wherever we take a <branch> argument:

-r <branch> -> revision at tip of <branch> (we do this now)
-b <rev> -> branch containing <rev>

Special-casing it for '.' is ugly.

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