rewrite demandload module to be more flexible.
performance not affected.
old demandload module could only import top-level modules like os and
sys.
with rewrite, all of following syntax is emulated perfectly:
import foo, bar foo bar
import foo.bar.quux foo.bar.quux
from foo.bar import quux, blurfl foo.bar:quux,blurfl
only thing missing is "import foo as bar".
also, namespace clashes between placeholder object and demand loaded
module are no longer possible.
#!/bin/sh
hg init
cat > .hg/hgrc <<EOF
[encode]
*.gz = gunzip
[decode]
*.gz = gzip
EOF
echo "this is a test" | gzip > a.gz
hg add a.gz
hg ci -m "test" -d "0 0"
echo %% no changes
hg status
touch a.gz
echo %% no changes
hg status
echo %% uncompressed contents in repo
hg debugdata .hg/data/a.gz.d 0
echo %% uncompress our working dir copy
gunzip < a.gz
rm a.gz
hg co
echo %% uncompress our new working dir copy
gunzip < a.gz