Feature request: keybind support for "collapse s-expr" and "expand s-expr"

[plane]

In DrRacket, you can collapse or expand s-exprs visually by right-clicking and picking "Collapse s-expression" or "Expand s-expression" (similar to what is called "folding" in some other editors). This is very nice, but it doesn't appear that there is an easy way to bind a key to collapse/expand. This would be nice to have!

[rfindler]

Do you know what keybindings other editors use for this? (It may be different on different platforms.)

Robby

On Thu, Sep 9, 2021 at 7:42 AM plane @.***> wrote:

In DrRacket, you can collapse or expand s-exprs visually by right-clicking and picking "Collapse s-expression" or "Expand s-expression" (similar to what is called "folding" in some other editors). This is very nice, but it doesn't appear that there is an easy way to bind a key to collapse/expand. This would be nice to have!

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[plane]

Although I don't use VS Code myself, the docs list the keybinds as Ctrl-Shift-[ to fold, Ctrl-Shift-] to unfold, and some additional keybinds hidden behind Ctrl-K. Those first two don't seem to do anything by default in DrRacket, so maybe they could be good candidates?

https://code.visualstudio.com/docs/editor/codebasics

I'm personally used to vi, where the folding keybinds all begin with z, as in zo and zc (where o and c are for "open" and "close"), but that's probably not too helpful here.

[rfindler]

I think that probably those are, in a generic sense, "\<menu-key-modifier>-shift-[" and "\<menu-key-modifier>-shift-]" which are bound to next tab and previous tab (following browser convention).

[plane]

Oops! I didn't have multiple tabs open when I tried it out. I guess those are taken.

I installed another editor called Sublime Text, and it appears that it also uses Ctrl-Shift-[ and ], again with some additional keybinds hidden behind Ctrl-K.

[sorawee]

In VSCode for Mac, next and previous tabs are cmd-shift-[ and cmd-shift-] respectively. Fold and unfold are alt-cmd-[ and alt-cmd-].

[spdegabrielle]

Does collapsed text trigger the multimedia file format ?

[shhyou]

Does collapsed text trigger the multimedia file format ?

Both cases are possible. With the option "Ask before changing save format" in the preferences, DrRacket will ask the user whether to save the file in plain text or in the WXME format. When saving as plain text, collapsed S-expressions are simply expanded and it works just fine.

[spdegabrielle]

@spdegabrielle This feature should be possible with quickscript