diff tests/test-rename-after-merge.t @ 44365:7c4b98a4e536

copy: add experimetal support for unmarking committed copies

The simplest way I'm aware of to unmark a file as copied after
committing is this:

  hg uncommit --keep <dest>
  hg forget <dest>
  hg add <dest>
  hg amend

This patch teaches `hg copy --forget` a `-r` argument to simplify that into:

  hg copy --forget --at-rev . <dest>

In addition to being simpler, it doesn't touch the working copy, so it
can easily be used even if the destination file has been modified in
the working copy.

I'll teach `hg copy` without `--forget` to work with `--at-rev` next.

Differential Revision: https://phab.mercurial-scm.org/D8030

--- a/tests/test-rename-after-merge.t	Fri Dec 20 15:50:13 2019 -0800
+++ b/tests/test-rename-after-merge.t	Tue Jan 28 14:07:57 2020 -0800
@@ -120,4 +120,10 @@
   $ hg log -r tip -C -v | grep copies
   copies:      b2 (b1)
 
+Test unmarking copies in merge commit
+
+  $ hg copy --forget --at-rev . b2
+  abort: cannot unmark copy in merge commit
+  [255]
+
   $ cd ..