rebase: improve description of --base
No Mercurial DAG has ever (!) been drawn in a way where 'up to' would apply.
Instead, describe deliberatey vague and informal instead of seemingly precise
but not describing the essentials:
rebase the tree around the specified changeset without ancestors of dest
--- a/hgext/rebase.py Fri Aug 15 19:43:32 2014 +0200
+++ b/hgext/rebase.py Tue Aug 19 01:12:56 2014 +0200
@@ -52,8 +52,8 @@
[('s', 'source', '',
_('rebase from the specified changeset'), _('REV')),
('b', 'base', '',
- _('rebase from the base of the specified changeset '
- '(up to greatest common ancestor of base and dest)'),
+ _('rebase the tree around the specified changeset without '
+ 'ancestors of dest'),
_('REV')),
('r', 'rev', [],
_('rebase these revisions'),