fix: handle grammar registrations to the same scope by different plugins #644
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Without this change grammar registrations from different plugins sharing the same scope name could unpredictably overwrite each other.
With this change, grammars are registered using fully qualified scope names (scopeName + '@' + pluginId). If plugin A supplies a content-type-to-scope and registers a grammar to that scope, it is ensured that if another plugin B also registers a grammar using the same scope, there won't be accidental usage of the plugin B's grammar via plugin A's content-type-to-scope binding.
The change also makes multiple grammar registrations for the same scope visible in the Preferences>TextMate>Grammars table.