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.
% initialize remote repo with branches
adding a
marked working directory as branch br
adding c
changeset: 2:1630aed6ed2b
branch: br
tag: tip
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: c
changeset: 1:234f53e6c5ff
branch: br
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: b
changeset: 0:cb9a9f314b8b
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: a
% try cloning -r branch
requesting all changes
adding changesets
adding manifests
adding file changes
added 3 changesets with 2 changes to 2 files
updating working directory
2 files updated, 0 files merged, 0 files removed, 0 files unresolved
changeset: 2:1630aed6ed2b
branch: br
tag: tip
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: c
% try cloning -rother clone#branch
requesting all changes
adding changesets
adding manifests
adding file changes
added 3 changesets with 2 changes to 2 files
updating working directory
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
changeset: 0:cb9a9f314b8b
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: a
% try cloning -r1 clone#branch
requesting all changes
adding changesets
adding manifests
adding file changes
added 3 changesets with 2 changes to 2 files
updating working directory
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
changeset: 1:234f53e6c5ff
branch: br
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: b