view hgext/__init__.py @ 9281:2a4131b264c3

keyword: refactor kwdemo and make output translatable

Better reflect the actual behaviour of the extension:
- Make map arguments and -f/--rcfile not mutually exclusive but
  extend the current configuration
- Map arguments and -f/--rcfile both override the defaults even
  when -d/--default is specified
- -d/--default only overrides the current configuration

Inform the user about extending/overriding behaviour, but only at
the beginning; the following messages become terser, making the
output translatable without too much code clutter.

Rephrase help (use "short/long" option notation etc.).

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