$ cat > engine.py << EOF > > from mercurial import ( > templater, > templateutil, > ) > > class mytemplater(object): > def __init__(self, loader, filters, defaults, resources, aliases): > self.loader = loader > self._defaults = defaults > self._resources = resources > > def symbol(self, mapping, key): > return mapping[key] > > def resource(self, mapping, key): > v = self._resources[key] > if v is None: > v = mapping[key] > return v > > def process(self, t, map): > tmpl = self.loader(t) > props = self._defaults.copy() > props.update(map) > for k, v in props.items(): > if k in ('templ', 'ctx', 'repo', 'revcache', 'cache', 'troubles'): > continue > if callable(v) and getattr(v, '_requires', None) is None: > props = self._resources.copy() > props.update(map) > v = v(**props) > elif callable(v): > v = v(self, props) > v = templateutil.stringify(v) > tmpl = tmpl.replace('{{%s}}' % k, v) > yield tmpl > > templater.engines['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 ..