view tests/notcapable @ 24069:c6666395fdd2

windows: adjust doc string and comments of posixfile()

The doc string of osutil.posixfile includes (line 611):

  "On error, this function may raise either a WindowsError or an IOError."

which is most likely correct, but does not fit for this function here anymore,
as we do fold WindowsError to IOError here specifically.

And this function is now a bit more than just an exception-wrapper, as it has
been expanded to additionally sanitize the unloved seek/tell behavior
of Windows.

(Self-disclosure: This patch is entirely untested at the time of its
publication, as I'm currently not using this version myself. I send it
in hopes that it will reduce potential future confusion. CC-ing Matt Harbison)

# Disable the $CAP wire protocol capability.

if test -z "$CAP"
then
    echo "CAP environment variable not set."
fi

cat > notcapable-$CAP.py << EOF
from mercurial import extensions, peer, localrepo
def extsetup():
    extensions.wrapfunction(peer.peerrepository, 'capable', wrapcapable)
    extensions.wrapfunction(localrepo.localrepository, 'peer', wrappeer)
def wrapcapable(orig, self, name, *args, **kwargs):
    if name in '$CAP'.split(' '):
        return False
    return orig(self, name, *args, **kwargs)
def wrappeer(orig, self):
    # Since we're disabling some newer features, we need to make sure local
    # repos add in the legacy features again.
    return localrepo.locallegacypeer(self)
EOF

echo '[extensions]' >> $HGRCPATH
echo "notcapable-$CAP = `pwd`/notcapable-$CAP.py" >> $HGRCPATH