[PATCH 2 of 2] histedit: use base for computing renames when folding (issue3729)

[Augie Fackler]

On Mon, Jul 15, 2013 at 03:14:47PM +0200, Martin Geisler wrote:
> # HG changeset patch
> # User Martin Geisler <martin at geisler.net>
> # Date 1373893482 -7200
> #      Mon Jul 15 15:04:42 2013 +0200
> # Branch stable
> # Node ID 33b5c323b4e878ff106a6167b5fdfb9b9b745b6b
> # Parent  02b3fca42ffba93191fd89b4a156af60840a66c4
> histedit: use base for computing renames when folding (issue3729)

queued these, thanks

>
> When a file was renamed in the very first changeset being histedited,
> the rename was not detected. Consider a history like this:
>
>    0  base: add a.txt
>    1  first: rename a.txt to b.txt
>    2  last: edit b.txt
>
> When 1 and 2 are edited, copies.pathcopies(first, last) correctly
> returns that nothing was renamed. We must instead use
> copies.pathcopies(first, last) to detect the initial rename.
>
> diff --git a/hgext/histedit.py b/hgext/histedit.py
> --- a/hgext/histedit.py
> +++ b/hgext/histedit.py
> @@ -247,7 +247,7 @@
>          files.update(ctx.files())
>
>      # Recompute copies (avoid recording a -> b -> a)
> -    copied = copies.pathcopies(first, last)
> +    copied = copies.pathcopies(base, last)
>
>      # prune files which were reverted by the updates
>      def samefile(f):
> diff --git a/tests/test-histedit-fold.t b/tests/test-histedit-fold.t
> --- a/tests/test-histedit-fold.t
> +++ b/tests/test-histedit-fold.t
> @@ -266,3 +266,37 @@
>    +6
>    $ cd ..
>
> +
> +Folding with initial rename (issue3729)
> +---------------------------------------
> +
> +  $ hg init fold-rename
> +  $ cd fold-rename
> +  $ echo a > a.txt
> +  $ hg add a.txt
> +  $ hg commit -m a
> +  $ hg rename a.txt b.txt
> +  $ hg commit -m rename
> +  $ echo b >> b.txt
> +  $ hg commit -m b
> +
> +  $ hg logt --follow b.txt
> +  2:e0371e0426bc b
> +  1:1c4f440a8085 rename
> +  0:6c795aa153cb a
> +
> +  $ hg histedit 1c4f440a8085 --commands - 2>&1 << EOF | fixbundle
> +  > pick 1c4f440a8085 rename
> +  > fold e0371e0426bc b
> +  > EOF
> +  1 files updated, 0 files merged, 0 files removed, 0 files unresolved
> +  reverting b.txt
> +  1 files updated, 0 files merged, 1 files removed, 0 files unresolved
> +  1 files updated, 0 files merged, 1 files removed, 0 files unresolved
> +  0 files updated, 0 files merged, 0 files removed, 0 files unresolved
> +
> +  $ hg logt --follow b.txt
> +  1:cf858d235c76 rename
> +  0:6c795aa153cb a
> +
> +  $ cd ..
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