Wishlist: matching parenthesis highlighting

[rdm]

A feature I frequently miss, in the qtide, is matching parenthesis highlighting.

Here, because the qtide cursor appears between parenthesis, and it's possible for it to be between two parenthesis, the highlighting mechanism would need to distinguish between the left side and the right side of the cursor.

[rdm]

It might be sufficient here if the qtide session supported user code to be executed after each keystroke, with an api for highlighting.

Actually, thinking about this, it doesn't even have to be that automatic -- possibly it would make sense to implement this using user function keys -- for example, setting the selection based on the innermost parenthesis containing the cursor. However, currently, the https://wiki.jsoftware.com/wiki/Guides/Window_Driver/Session_Manager does not indicate a mechanism for detecting the cursor position.

(Also, note here that an issue with recent versions of the J engine is that parenthesis can contain {{}} definitions. An initial implementation which neglects this issue might still be useful.)