templater: factor out function that creates templater from string template This function will host loading of template aliases. It is not defined at templater, but at formatter, since formatter is the module handling ui stuff in front of templater.

templater: separate function to create templater from map file (API) New frommapfile() function will make it clear when template aliases will be loaded. They should be applied to command arguments and templates in hgrc, but not to map files. Otherwise, our stock styles and web templates (i.e map-file templates) could be modified unintentionally. Future patches will add "aliases" argument to __init__(), but not to frommapfile().

templater: extract function that loads template map file Prepares for API change. See the next patch for details. 'map' variable is renamed to avoid shadowing map() function.

templater: demote "base" directory of map file to local variable It isn't referenced from other places.

notify: do not load style file if template is specified (BC) This patch makes sure that either "tmpl" or "mapfile" is exclusively set, which is the same behavior as common log-like templates and formatter outputs. See the previous patch for why.

bugzilla: do not load style file if template is specified (BC) This prepares for the API change to support template aliases. I'm going to extract a factory function of templater that reads a map file: # original templater(mapfile, ..., cache, ...) # new templater.frommapfile(mapfile, ...) # read mapfile to build cache/map templater(..., cache, ...) # use specified cache (= map elements) This will make it clear to isolate stock styles (i.e. map files) from user aliases. Template aliases should be applied to command arguments and templates in hgrc, but not to map files. Otherwise, our stock styles and web templates could be modified unintentionally. This patch makes sure that either "tmpl" or "mapfile" is exclusively set. It's theoretically a behavior change, since you could put new keywords in template by defining them in a map file before: # mapfile foo = "{rev}" # hgrc [bugzilla] style = mapfile template = {foo} But the old behavior would be a bug because bugzilla.template is documented as "overrides style if specified". Also, common log-like templates and formatter doesn't allow using mapfile-keywords in a separate template. So I decided to make a BC. Since there was no test for the bugzilla extension, this adds new test that covers style/template output.