templater: use named function to expand template against mapping dict (API)...
templater: use named function to expand template against mapping dict (API)
And replace __call__(t, **mapping) in favor of generate(t, mapping). I prefer
a named function here since the templater isn't a simple function-like object.
.. api::
The templater is no longer callable. Use ``templater.generate(t, mapping)``
instead of ``templater(t, **pycompat.strkwargs(mapping))``.