Change grep -e to grep --all We want to reserve -e for future use and grep compatibility. I've changed every-match to all out of a general preference for shorter long option names where short options don't exist.

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#!/bin/sh

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mkdir t

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cd t

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hg init

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echo a > a

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hg add a

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hg commit -m "test" -d "0 0"

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hg verify

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hg parents

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hg status

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hg undo

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hg verify

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hg parents

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hg status