tags: don't check for clean files when checking for dirty working copy
We didn't request status for clean files so there should never be any
entries in the list of clean files (at least not since dd773340a085),
but it's misleading to check the list.
Differential Revision: https://phab.mercurial-scm.org/D7428
test sparse
$ hg init myrepo
$ cd myrepo
$ cat >> $HGRCPATH <<EOF
> [extensions]
> sparse=
> purge=
> strip=
> rebase=
> EOF
$ echo a > index.html
$ echo x > data.py
$ echo z > readme.txt
$ cat > base.sparse <<EOF
> [include]
> *.sparse
> EOF
$ hg ci -Aqm 'initial'
$ cat > webpage.sparse <<EOF
> %include base.sparse
> [include]
> *.html
> EOF
$ hg ci -Aqm 'initial'
Clear rules when there are includes
$ hg debugsparse --include *.py
$ ls
data.py
$ hg debugsparse --clear-rules
$ ls
base.sparse
data.py
index.html
readme.txt
webpage.sparse
Clear rules when there are excludes
$ hg debugsparse --exclude *.sparse
$ ls
data.py
index.html
readme.txt
$ hg debugsparse --clear-rules
$ ls
base.sparse
data.py
index.html
readme.txt
webpage.sparse
Clearing rules should not alter profiles
$ hg debugsparse --enable-profile webpage.sparse
$ ls
base.sparse
index.html
webpage.sparse
$ hg debugsparse --include *.py
$ ls
base.sparse
data.py
index.html
webpage.sparse
$ hg debugsparse --clear-rules
$ ls
base.sparse
index.html
webpage.sparse