prune: update to the successor of wdir also with --pair/--biject (issue6142)
When prune is used with --pair flag, we can also update to the successor of
working directory parent.
No need to check len(sucs) or len(precs) here because there's a check for that
earlier in the code (it's a requirement of biject).
The tests are now demonstrate the correct behavior: when rev 14 was pruned with
12 as its successor, the bookmark that was on 14 was moved to 12. That bookmark
was also activated (even before this patch).
$ cat >> $HGRCPATH <<EOF
> [ui]
> logtemplate={rev}:{node|short}[{bookmarks}] ({obsolete}/{phase}) {desc|firstline}\n
> [extensions]
> EOF
$ echo "evolve=$(echo $(dirname $TESTDIR))/hgext3rd/evolve/" >> $HGRCPATH
$ mkcommit() {
> echo "$1" > "$1"
> hg add "$1"
> hg ci -m "add $1"
> }
$ hg init repo
$ cd repo
$ mkcommit a
$ mkcommit b
test disabling commands
$ cat >> .hg/hgrc <<EOF
> [experimental]
> evolution=createmarkers
> allowunstable
> exchange
> EOF
$ hg prune
hg: unknown command 'prune'
(use 'hg help' for a list of commands)
[255]