Implemented Command Palette in pre-release

[kjk]

I just added command palette in pre-release builds.

I'm pretty excited about this feature. Use Ctrl + K to invoke the palette:

Command palette has recently become popular. See e.g. Visual Studio Code.

How to use it:

• press Ctrl-K to show command palette window
• enter text to narrow down list of matches
• up / down arrow will navigate between matches
• Enter to execute selected match or double-click in list
• Escape to close the window (or click outside of it)

The list contains:

• list of currently opened files
• list of files from history
• commands

You can use it:

• quickly open any file you previously opened
• quickly switch to another tab
• quickly execute any command

It's not perfect yet but it works.

[pritkr]

TabWidth setting from advanced options does not work in the pre-release build
I don't know if this is related to this

[kjk]

It wasn't.
I recently added sanity checks for some settings and made TabWidth a minimum of 300.
That is excessive so I lowered it to 60 in 647b860

[2tef]

Noticed the last option says "Toggle fullscreem" instead of "Toggle fullscreen", and maybe "Check for Update" should be "Check for Updates"? hope that helps, love the new command palette!

[GitHubRulesOK]

well spotted so made me look closer

@kjk Create Free Text Annotation is naturally out of alpha order due to double space before free :-)
also Deubg: :-)

[kjk]

thanks, fixed in ed2f714

[drdaxxy]

Thanks, this could help a lot with the "too many tabs" problem.

When paths get too long, though, they get cut off:

The instant search UIs in editors usually solve this by printing file names as the main item, with the full path in a smaller font to the right or below. Just putting it in parentheses after the file name would be simpler and solve the problem, IMO.

On that note,

   // avoid adding the same file opened in multiple window

if I deliberately open a file multiple times, it's because I want to quickly jump between scroll positions, if I do it accidentally, I'd like to see my mistake in the open document list, so this behaviour isn't ideal, but that is a nitpick 😄