Mercurial > hg
view tests/test-log-exthook.t @ 38526:313a940d49a3
ui: add an uninterruptable context manager that can block SIGINT
The blocking of SIGINT is not done by default, but my hope is that we
will one day. This was inspired by Facebook's "nointerrupt" extension,
which is a bit more heavy-handed than this (whole commands are treated
as unsafe to interrupt). A future patch will enable this for varying
bits of Mercurial that are performing unsafe operations.
It's intentional that the KeyboardInterrupt is raised as the context
manager exits: during the span of the context manager interrupting
Mercurial could lead to data loss, but typically those spans are
fairly narrow, so we can let the unsafe block complete and then
terminate hg (which will leave the repo in a consistent state, even if
it's not the user's desired state).
.. api::
New context manager ``ui.uninterruptable()`` to mark portions of a command
as potentially unsafe places to interrupt Mercurial with Control-C or
similar.
Differential Revision: https://phab.mercurial-scm.org/D3716
author | Augie Fackler <augie@google.com> |
---|---|
date | Wed, 27 Jun 2018 10:47:14 -0400 |
parents | c8e2d6ed1f9e |
children | 2b9f315a4217 |
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Test hg log changeset printer external hook ------------------------------------------- $ cat > $TESTTMP/logexthook.py <<EOF > from __future__ import absolute_import > from mercurial import ( > commands, > logcmdutil, > repair, > ) > def rot13description(self, ctx): > summary = "summary".encode('rot13') > description = ctx.description().strip().splitlines()[0].encode('rot13') > self.ui.write("%s: %s\n" % (summary, description)) > def reposetup(ui, repo): > logcmdutil.changesetprinter._exthook = rot13description > EOF Prepare the repository $ hg init empty $ cd empty $ touch ROOT $ hg commit -A -m "Root" ROOT $ touch a b c $ hg commit -A -m "Add A, B, C" a b c Check the log $ hg log --config extensions.t=$TESTTMP/logexthook.py changeset: 1:70fc82b23320 tag: tip user: test date: Thu Jan 01 00:00:00 1970 +0000 fhzznel: Nqq N, O, P summary: Add A, B, C changeset: 0:b00443a54871 user: test date: Thu Jan 01 00:00:00 1970 +0000 fhzznel: Ebbg summary: Root Check that exthook is working with graph log too $ hg log -G --config extensions.t=$TESTTMP/logexthook.py @ changeset: 1:70fc82b23320 | tag: tip | user: test | date: Thu Jan 01 00:00:00 1970 +0000 | fhzznel: Nqq N, O, P | summary: Add A, B, C | o changeset: 0:b00443a54871 user: test date: Thu Jan 01 00:00:00 1970 +0000 fhzznel: Ebbg summary: Root