convert/gnuarch: parse continuation-of revisions in gnuarch source In GNU Arch, continuation-of was often used for: - tagging revisions - continue working on a project in a new archive, because arch was scaling poorly in revision numbers (cat-logs were slow to be parsed and scanned through) - very similar to the previous point, fork his own branch of a project. Parsing this header information will allow to 'follow' new history because it often hints at older/forked/personal revision trees. This patch however just implements the parsing of the continuation-of header. A followup patch will implement the proper use of this new information.

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#!/bin/sh

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#

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# Corrupt an hg repo with a pull started during an aborted commit

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#

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# Create two repos, so that one of them can pull from the other one.

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hg init source

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cd source

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touch foo

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hg add foo

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hg ci -m 'add foo'

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hg clone . ../corrupted

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echo >> foo

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hg ci -m 'change foo'

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# Add a hook to wait 5 seconds and then abort the commit

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cd ../corrupted

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echo '[hooks]' >> .hg/hgrc

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echo 'pretxncommit = sleep 5; exit 1' >> .hg/hgrc

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# start a commit...

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touch bar

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hg add bar

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hg ci -m 'add bar' &

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# ... and start a pull while the commit is still running

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sleep 1

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hg pull ../source 2>/dev/null

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# see what happened

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wait

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hg verify