Introduce ExpandSelectionToWord action

[carlos-zamora]

Summary of the Pull Request

Introduces a new action expandSelectionToWord() which expands the beginning and end of the selection to encompass the word(s) it's on. This was implemented as a conditional keybinding where the key chord is passed through to the terminal if no selection is active (similar to copy()).
It is not bound to anything by default.

PR Checklist

• Closes Search behavior in Terminal -- add capability to insert the matched hit #8274
• Schema updated.

Validation Steps Performed

• Scenario in Search behavior in Terminal -- add capability to insert the matched hit #8274:
  • search for some text in the find dialog
  • ESC to close the dialog
  • execute expandSelectionToWord()
  • the new selection encompasses the whole word
• mark mode
  • move onto a word
  • execute expandSelectionToWord()
• mouse selection (same as above)
• select a portion of two words --> new selection fully encompasses both words

[carlos-zamora]

1. I could easily abstract this action into expandSelection(mode: {cell|word|line|view|buffer}) but that all sounds... not useful.
2. Current behavior is that if the selection encompasses multiple words, the selection is expanded to encompass all of them entirely (i.e. "hell[o w]orld" --> "[hello world]"). I could change this to only expand at the active endpoint, but that sounds like a pretty niche thing imo.

Let me know if you disagree with my assumptions above.

[zadjii-msft]

Current behavior is that if the selection encompasses multiple words

what about a selection of hello [w]orld - that expands to hello [world] (right?), then what would the next expandSelectionToWord do?

[zadjii-msft]

RE expandSelection(mode: {cell|word|line|view|buffer}): That sounds like what home/end/pgup/dn/ctrl+a are for.

[carlos-zamora]

what about a selection of hello [w]orld - that expands to hello [world] (right?), then what would the next expandSelectionToWord do?

hello [w]orld --> hello [world] --> hello [world] (you're already on the whole word so no more to expand to)

VS Code has an "Expand Selection" action for Shift+Alt+Right. That expands to word --> line -->doc. (so if you're already on the whole word, it goes to line, etc...).

[zadjii-msft]

ez

[carlos-zamora]

From bug bash:
- [ ] Mark mode --> move to middle of word --> ExpandSelectionToWord --> Shift+Right/Left --> weird updated selection

Moved to #13854

[DHowett]

make sure this gets into the docs!

[ghost]

Hello @carlos-zamora!

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[ghost]

🎉Windows Terminal Preview v1.16.252 has been released which incorporates this pull request.:tada:

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