stream: in v3, skip the "size" fast path if the entries as some unknown size
We are about to prefetch size during the lock less in the v3 case. So we need to
avoid trying to use that prefetched size when it is not available.
See next changeset for the motivation.
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 -A
.hg
data.py
$ hg debugsparse --clear-rules
$ ls -A
.hg
base.sparse
data.py
index.html
readme.txt
webpage.sparse
Clear rules when there are excludes
$ hg debugsparse -X base.sparse -X webpage.sparse
$ ls -A
.hg
data.py
index.html
readme.txt
$ hg debugsparse --clear-rules
$ ls -A
.hg
base.sparse
data.py
index.html
readme.txt
webpage.sparse
Clearing rules should not alter profiles
$ hg debugsparse --enable-profile webpage.sparse
$ ls -A
.hg
base.sparse
index.html
webpage.sparse
$ hg debugsparse --include *.py
$ ls -A
.hg
base.sparse
data.py
index.html
webpage.sparse
$ hg debugsparse --clear-rules
$ ls -A
.hg
base.sparse
index.html
webpage.sparse