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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hg init

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touch a

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hg add a

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hg commit -m "Added a" -d "1000000 0"

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touch main

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hg add main

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hg commit -m "Added main" -d "1000000 0"

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hg checkout 0

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echo Main should be gone

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ls

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touch side1

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hg add side1

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hg commit -m "Added side1" -d "1000000 0"

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touch side2

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hg add side2

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hg commit -m "Added side2" -d "1000000 0"

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hg log

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echo Should have two heads, side2 and main

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hg heads

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echo Should show "a side1 side2"

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ls

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hg update --debug -C 1

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echo Should only show "a main"

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ls

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