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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#

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mkdir t

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cd t

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hg init

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echo 0 > a

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echo 0 > b

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hg ci -A -m m -d "1000000 0"

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hg rm a

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hg cat a

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sleep 1 # make sure mtime is changed

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echo 1 > b

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hg ci -m m -d "1000000 0"

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echo 2 > b

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hg cat -r 0 a

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hg cat -r 0 b

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hg cat -r 1 a

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hg cat -r 1 b