[Bug 4732] New: Ctrl+c during unshelve with pending changes can lose those changes permanently

[mercurial-bugs at selenic.com]

http://bz.selenic.com/show_bug.cgi?id=4732

          Priority: normal
            Bug ID: 4732
                CC: mercurial-devel at selenic.com
          Assignee: bugzilla at selenic.com
           Summary: Ctrl+c during unshelve with pending changes can lose
                    those changes permanently
          Severity: bug
    Classification: Unclassified
                OS: Mac OS
          Reporter: durham at fb.com
          Hardware: PC
            Status: UNCONFIRMED
           Version: default branch
         Component: shelve
           Product: Mercurial

If you have pending changes in your working copy, then run 'hg unshelve' and
ctrl+c after the 'temporarily committing pending changes' message, but before
the 'rebase' finishes, the temporarily committed changes are lost forever (not
to mention your working copy is left on an unknown commit).

This is caused by unshelve using a single transaction to perform the commit and
the rebase. If the rebase is aborted, the temporary commit is also truncated.

This will be fixed by the rewrite that shelve is in desperate need of.

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