Reduce size of text file editor syntax highlight option list, let users customize it

[JasonWeill]

Problem

The "Text Editor Syntax Highlighting" option in the View menu has dozens of languages listed, including one that has been misspelled (#14418) and one that includes an English-language profanity (#14373). More popular languages are hard to find.

Proposed Solution

By default, show a curated list of popular languages (e.g., those used by more than X% of developers in a popular survey) in the syntax highlighting menu. Allow users to customize this list in the settings editor.

[krassowski]

What do you think about having a nested submenu:

• Popular language 1
• Popular language 2
• ...
• Popular language 15
• More → [opens submenu or maybe a dialog with a full list]

Where popular languages list can be customised in settings as you propose.

[JasonWeill]

Even 15 options would be a lot in a cascading submenu, especially if the user is on a small screen or has their zoom setting turned way up. I would avoid having a subsubmenu for accessibility and usability reasons.

Perhaps a simple modal dialog with a dropdown or combo box control (supporting typeahead or inline search) would be better for this.

[krassowski]

Maybe we could use top 10 most recently used languages, and fall back to a hard-coded "popularity" based list if there is less than 10?

[krassowski]

Perhaps a simple modal dialog with a dropdown or combo box control (supporting typeahead or inline search) would be better for this.

This is what the statusbar item does.

[krassowski]

Even 15 options would be a lot in a cascading submenu, especially if the user is on a small screen or has their zoom setting turned way up. I would avoid having a subsubmenu for accessibility and usability reasons.

So 10 options + 11th opens a dialog with full list + search box?

[JasonWeill]

I like that: a top 10 list, plus an option to open a dialog with more options.

[JasonWeill]

See also #2484