Don't abort when backup files already exist. Don't allow alternative names. Rationale: - When the user wants to revert, he shouldn't be stopped from doing this just because some old backups will be overwritten. - To not clobber important files by accident, alternative names for backup files were disabled. As the backup target now has a fixed name, the user doesn't have to be informed about the backup copy (unless --verbose)

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#!/bin/sh

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hg init 1

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echo '[ui]' >> 1/.hg/hgrc

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echo 'timeout = 10' >> 1/.hg/hgrc

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echo foo > 1/foo

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hg --cwd 1 ci -A -m foo

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hg clone 1 2

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hg clone 2 3

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echo '[hooks]' >> 2/.hg/hgrc

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echo 'changegroup.push = hg push -qf ../1' >> 2/.hg/hgrc

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echo bar >> 3/foo

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hg --cwd 3 ci -m bar

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hg --cwd 3 push ../2