Expand Selection and PML Nodes

[tajmone]

The following Sublime Text menus are of particular interest for Sublime PML:

menu	key-binding
Selection » Expand Selection	Ctrl+Shift+A
Selection » Expand Selection to Block
Selection » Expand Selection to Scope	Ctrl+Shift+Space
Selection » Expand Selection to Brackets	Ctrl+Shift+M

Ideally, one of the above should allow users to quickly select a node's contents, and if executed again then select the opening and closing tags too, and with subsequent executions move to the outer node, and so on.

This would allow to quickly select and delete a node's contents, or the entire node (including its delimiters) with a single key-binding.

Unfortunately, none of these work exactly as expected because they don't seem to recognize the node opening and closing tags in their own right, but focus instead on the square brackets only.

I also noticed that these selection modes don't work consistently on native syntaxes either, so I probably need to investigate how semantic scopes relate to their efficiency, and which criteria distinguish these selection-expansion modes in respect to scoping, etc. Maybe then I could achieve the expected goal by tweaking the way PML nodes are being scoped.

In the native Default.sublime-commands settings, these modes are associated to the following commands:

    { "caption": "Selection: Expand", "command": "expand_selection", "args": {"to": "smart"} },
    { "caption": "Selection: Expand to Scope", "command": "expand_selection", "args": {"to": "scope"} },
    { "caption": "Selection: Expand to Brackets", "command": "expand_selection", "args": {"to": "brackets"} },