typing: add trivial type hints to the convert extension's common modules
This started as ensuring that the `encoding` and `orig_encoding` attributes has
a type other than `Any`, so pytype can catch problems where it needs to be str
for stdlib encoding and decoding. It turns out that adding the hint in
`mercurial.encoding` is what was needed, but I picked a bunch of low hanging
fruit while here. There's definitely more to do, and I see a problem where
`shlex.shlex` is being fed bytes instead of str, but there are not enough type
hints yet to make pytype notice.
#require serve
$ cat <<EOF >> $HGRCPATH
> [extensions]
> schemes=
>
> [schemes]
> l = http://localhost:$HGPORT/
> parts = http://{1}:$HGPORT/
> z = file:\$PWD/
> EOF
$ hg init test
$ cd test
$ echo a > a
$ hg ci -Am initial
adding a
invalid scheme
$ hg log -R z:z
abort: no '://' in scheme url 'z:z'
[255]
http scheme
$ hg serve -n test -p $HGPORT -d --pid-file=hg.pid -A access.log -E errors.log
$ cat hg.pid >> $DAEMON_PIDS
$ hg incoming l://
comparing with l://
searching for changes
no changes found
[1]
check that {1} syntax works
$ hg incoming --debug parts://localhost
using http://localhost:$HGPORT/
sending capabilities command
comparing with parts://localhost/
query 1; heads
sending batch command
searching for changes
all remote heads known locally
no changes found
(sent 2 HTTP requests and * bytes; received * bytes in responses) (glob)
[1]
check that paths are expanded
$ PWD=`pwd` hg incoming z://
comparing with z://
searching for changes
no changes found
[1]
check that debugexpandscheme outputs the canonical form
$ hg debugexpandscheme bb://user/repo
https://bitbucket.org/user/repo
expanding an unknown scheme emits the input
$ hg debugexpandscheme foobar://this/that
foobar://this/that
expanding a canonical URL emits the input
$ hg debugexpandscheme https://bitbucket.org/user/repo
https://bitbucket.org/user/repo
errors
$ cat errors.log
$ cd ..