dirstate-v2: fix infinite loop in pure packer
Due to the naive approach to path relative-ness, some tree shapes
like the one introduced in the associated test could result in the
packer going into an endless loop which allocated new `Node` objects
endlessly until the process was killed by Linux's OOM killer.
Differential Revision: https://phab.mercurial-scm.org/D12170
Tests that the exit code is as expected when ui.detailed-exit-code is *not*
enabled.
$ cat >> $HGRCPATH << EOF
> [ui]
> detailed-exit-code=no
> EOF
$ hg init
$ echo a > a
Expect exit code 0 on success
$ hg ci -Aqm initial
$ hg co nonexistent
abort: unknown revision 'nonexistent'
[255]
$ hg co 'none()'
abort: empty revision set
[255]
$ hg co 'invalid('
hg: parse error at 8: not a prefix: end
(invalid(
^ here)
[255]
$ hg co 'invalid('
hg: parse error at 8: not a prefix: end
(invalid(
^ here)
[255]
$ hg continue
abort: no operation in progress
[255]
$ hg st --config a=b
abort: malformed --config option: 'a=b' (use --config section.name=value)
[255]
$ echo b > a
$ hg ci -m second
$ echo c > a
$ hg ci -m third
$ hg --config extensions.rebase= rebase -r . -d 0 -q
warning: conflicts while merging a! (edit, then use 'hg resolve --mark')
unresolved conflicts (see 'hg resolve', then 'hg rebase --continue')
[1]