branchcache: cleanup the final key generation after update
A lot of duplicated work seemed to be done, as we already update the tiprev and
tipnode when needed right before. So we simplify that part to focus on the
filtered hash.
See inline comment for details.
#testcases dirstate-v1 dirstate-v2
#if dirstate-v2
$ cat >> $HGRCPATH << EOF
> [format]
> use-dirstate-v2=1
> [storage]
> dirstate-v2.slow-path=allow
> EOF
#endif
$ rm -rf r
$ hg init r
$ cd r
$ mkdir d1
$ mkdir d2
$ touch d1/f d2/f
$ hg commit -Am '.'
adding d1/f
adding d2/f
$ echo 'syntax:re' >> .hgignore
$ echo '^d1$' >> .hgignore
$ hg commit -Am "ignore d1"
adding .hgignore
Now d1 is a directory that's both committed and ignored.
Untracked files in d2 are still shown, but ones in d1 are ignored:
$ touch d1/g
$ touch d2/g
$ RAYON_NUM_THREADS=1 hg status
? d2/g