push: more robust check for bundle fast path
When all changesets in the local repo are either being pushed or remotly known,
we can take a fast path when bundling changeset because we are certain all local
deltas are computed againts base known remotely.
So we have a check to detect this situation, when we did a bare push and nothing
was excluded.
In a coming refactoring, the discovery will run on filtered view and the content
of `outgoing.excluded` will just include unserved (secret) changeset not filtered by the
repoview used to call push (usually "visible"). So we need to check if there is
both no excluded changeset and nothing filtered by the current repoview.
$ hg init
$ echo a > a
$ hg ci -Am0
adding a
$ hg -q clone . foo
$ touch .hg/store/journal
$ echo foo > a
$ hg ci -Am0
abort: abandoned transaction found - run hg recover!
[255]
$ hg recover
rolling back interrupted transaction
checking changesets
checking manifests
crosschecking files in changesets and manifests
checking files
1 files, 1 changesets, 1 total revisions
Check that zero-size journals are correctly aborted:
#if unix-permissions no-root
$ hg bundle -qa repo.hg
$ chmod -w foo/.hg/store/00changelog.i
$ hg -R foo unbundle repo.hg
adding changesets
abort: Permission denied: $TESTTMP/foo/.hg/store/.00changelog.i-* (glob)
[255]
$ if test -f foo/.hg/store/journal; then echo 'journal exists :-('; fi
#endif