[PATCH] Harden os.system -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 [PATCH] Harden os.system From: Bryan O'Sullivan <bos@serpentine.com> Add util.system function. This is similar to os.system, but will either succeed (if the process finishes with a zero exit code) or raise a util.CommandError (if the process exits uncleanly or is killed by a signal). Add util.explain_exit function. This tends to be ubiquitous in code that calls other processes, and must describe what has gone wrong. Change some uses of os.system over to util.system. manifest hash: e3bf4adcac5b915432ec0af00efdbcef86bea4b1 -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.0 (GNU/Linux) iD8DBQFCwSipywK+sNU5EO8RAr0RAJkBDt8XQ7mYQAWNHNgTOVt1eyWU1QCfe1oO 2OwxyWqpbRNACVJHHfZ3/Xw= =OaRX -----END PGP SIGNATURE-----

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#!/bin/bash

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set -x

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hg init

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echo "nothing" > a

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hg add a

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hg commit -t ancestor -u test -d "0 0"

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echo "something" > a

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hg commit -t branch1 -u test -d "0 0"

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hg co 0

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echo "something else" > a

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hg commit -t branch2 -u test -d "0 0"

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export HGMERGE=merge

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hg -d up -m 1

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hg id

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grep -Ev ">>>|<<<" a

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hg status