[mercurial] Mercurial: how to amend the last commit?

Assuming that you have not yet propagated your changes, here is what you can do.

  • Add to your .hgrc:

    [extensions]
    mq =
    
  • In your repository:

    hg qimport -r0:tip
    hg qpop -a
    

    Of course you need not start with revision zero or pop all patches, for the last just one pop (hg qpop) suffices (see below).

  • remove the last entry in the .hg/patches/series file, or the patches you do not like. Reordering is possible too.

  • hg qpush -a; hg qfinish -a
  • remove the .diff files (unapplied patches) still in .hg/patches (should be one in your case).

If you don't want to take back all of your patch, you can edit it by using hg qimport -r0:tip (or similar), then edit stuff and use hg qrefresh to merge the changes into the topmost patch on your stack. Read hg help qrefresh.

By editing .hg/patches/series, you can even remove several patches, or reorder some. If your last revision is 99, you may just use hg qimport -r98:tip; hg qpop; [edit series file]; hg qpush -a; hg qfinish -a.

Of course, this procedure is highly discouraged and risky. Make a backup of everything before you do this!

As a sidenote, I've done it zillions of times on private-only repositories.

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