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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updating working directory

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2 files updated, 0 files merged, 0 files removed, 0 files unresolved

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% Now b has one revision to be pulled from a

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pulling from 

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searching for changes

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adding changesets

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adding manifests

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adding file changes

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added 1 changesets with 1 changes to 1 files (+1 heads)

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(run 'hg heads' to see heads, 'hg merge' to merge)

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saving bundle to 

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adding branch

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adding changesets

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adding manifests

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adding file changes

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added 2 changesets with 2 changes to 2 files

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rebase completed

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@  3:L1

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|

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o  2:R1

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|

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o  1:C2

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|

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o  0:C1

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% Re-run pull --rebase

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pulling from 

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searching for changes

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no changes found

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% Invoke pull --rebase with --update

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abort: --update and --rebase are not compatible