purge: abort with missing files avoiding problems with name-mangling fs In a name mangling filesystem (e.g. a case insensitive one) dirstate.walk() can yield filenames different from the ones stored in the dirstate. This already confuses the status and add commands, but with purge this may cause data loss. To prevent this purge refuses to work if there are missing files and has a 'force' option if the user knows it is safe. Even with the force option purge checks if any of the missing files is still available in the working dir: if so there may be some problem with the underlying filesystem, so it unconditionally aborts.

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#!/bin/sh

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echo % init foo-base

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hg init foo-base

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echo % create alpha in first repo

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cd foo-base

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echo 'alpha' > alpha

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hg ci -A -m 'add alpha' -d '1 0'

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cd ..

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echo % clone foo-base to foo-work

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hg clone foo-base foo-work

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echo % create beta in second repo

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cd foo-work

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echo 'beta' > beta

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hg ci -A -m 'add beta' -d '2 0'

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cd ..

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echo % create gamma in first repo

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cd foo-base

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echo 'gamma' > gamma

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hg ci -A -m 'add gamma' -d '3 0'

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cd ..

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echo % pull into work and merge

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cd foo-work

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hg pull -q

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hg merge

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echo % revert to changeset 1 to simulate a failed merge

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rm alpha beta gamma

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hg up -C 1