wsgiheaders: import a bytes-ified fork of wsgiref.headers from cpython@46f5072
This will let us restore Python 3 compatibility for tests that do http things.
Differential Revision: https://phab.mercurial-scm.org/D3245
$ cat > engine.py << EOF
>
> from mercurial import (
> pycompat,
> templater,
> templateutil,
> )
>
> class mytemplater(templater.engine):
> def _load(self, t):
> return self._loader(t)
>
> def process(self, t, map):
> tmpl = self._load(t)
> props = self._defaults.copy()
> props.update(map)
> for k, v in props.items():
> if b'{{%s}}' % k not in tmpl:
> continue
> if callable(v) and getattr(v, '_requires', None) is None:
> props = self._resources.copy()
> props.update(map)
> v = v(**pycompat.strkwargs(props))
> elif callable(v):
> v = v(self, props)
> v = templateutil.stringify(self, props, v)
> tmpl = tmpl.replace(b'{{%s}}' % k, v)
> yield tmpl
>
> templater.engines[b'my'] = mytemplater
> EOF
$ hg init test
$ echo '[extensions]' > test/.hg/hgrc
$ echo "engine = `pwd`/engine.py" >> test/.hg/hgrc
$ cd test
$ cat > mymap << EOF
> changeset = my:changeset.txt
> EOF
$ cat > changeset.txt << EOF
> {{rev}} {{node}} {{author}}
> EOF
$ hg ci -Ama
adding changeset.txt
adding mymap
$ hg log --style=./mymap
0 97e5f848f0936960273bbf75be6388cd0350a32b test
$ cat > changeset.txt << EOF
> {{p1rev}} {{p1node}} {{p2rev}} {{p2node}}
> EOF
$ hg ci -Ama
$ hg log --style=./mymap
0 97e5f848f0936960273bbf75be6388cd0350a32b -1 0000000000000000000000000000000000000000
-1 0000000000000000000000000000000000000000 -1 0000000000000000000000000000000000000000
invalid engine type:
$ echo 'changeset = unknown:changeset.txt' > unknownenginemap
$ hg log --style=./unknownenginemap
abort: invalid template engine: unknown
[255]
$ cd ..