Redmine

I know there is:

rake locales

but how to use it to extract new strings from plugins for example?

Redmine uses the Rails Internationalization (I18n) API with flat YAML files.

You can find Redmine's files in config/locales/*.yml and plugin locale files in plugins/$PLUGIN_NAME/config/locales/*.yml.

Yup I know that, but what I want is a command to extract strings from views, much like

http://stackoverflow.com/questions/3554803/is-there-a-tool-for-assisting-with-ruby-rails-internationalization

I can see this few tasks

rake locales                                     # Updates and checks locales against en.yml
rake locales:add_key                             # Adds a new top-level translation string to all locale file (only works for childless keys, probably doesn't work on...
rake locales:check_interpolation                 # Checks interpolation arguments in locals against en.yml
rake locales:check_parsing_by_psych              # Check parsing yaml by psych library on Ruby 1.9
rake locales:dup                                 # Duplicates a key
rake locales:remove_key                          # Removes a translation string from all locale file (only works for top-level childless non-multiline keys, probably ...
rake locales:update                              # Updates language files based on en.yml content (only works for new top level keys)

but I how to run it in a plugin's directory...?