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rebase: use dirstateguard instead of dirstate.invalidate...
rebase: use dirstateguard instead of dirstate.invalidate Before this patch, "rebase.concludenode()" uses "dirstate.invalidate()" as a kind of "restore .hg/dirstate to the original status" during a failure. But it just discards changes in memory, and doesn't actually restore ".hg/dirstate". Then, it can't work as expected, if "dirstate.write()" is executed while processing. This patch uses "dirstateguard" instead of "dirstate.invalidate()" to restore ".hg/dirstate" during a failure even if "dirstate.write()" is executed before a failure. This patch also removes "beginparentchage()" and "endparentchange()", because "dirstateguard" makes them useless. This is a part of preparations to fix the issue that the recent (in memory) dirstate isn't visible to external processes (e.g. "precommit" hook). After this patch, the changed dirstate becomes visible to external "precommit" hooks during "hg rebase" in "test-largefiles-misc.t", because "dirstateguard()" writes it out. But this content isn't yet correct, because: - "normal3" should be marked as "A"(dded) at committing It is newly added in the changeset being rebased. - but it is marked as "M"(odified) The result of "repo.setparents()" after "dirstateguard()" isn't yet written out before "precommit". So, merging is still in progress for "hg status" in it. This causes marking the file newly added on "other" branch as "A". This will be fixed by subsequent patch.

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multirevs.txt
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When Mercurial accepts more than one revision, they may be specified
individually, or provided as a topologically continuous range,
separated by the ":" character.
The syntax of range notation is [BEGIN]:[END], where BEGIN and END are
revision identifiers. Both BEGIN and END are optional. If BEGIN is not
specified, it defaults to revision number 0. If END is not specified,
it defaults to the tip. The range ":" thus means "all revisions".
If BEGIN is greater than END, revisions are treated in reverse order.
A range acts as a closed interval. This means that a range of 3:5
gives 3, 4 and 5. Similarly, a range of 9:6 gives 9, 8, 7, and 6.