Edit REPL line in editor

[jkarni]

readline has this, but haskeline doesn't. When opening issues etc it'd be quite nice.

(If this ends up being an upstream change to haskeline, ghci benefits too!)

(I dream one day of functions being allowed to provide templates for their arguments, and then the editor being prepopulated with these. But that shall be done in the Future Indefinite.)

[luqui]

Can you provide more detail about this? So it's some key combination that opens the current line in $EDITOR? What's the standard binding for this.

Doesn't look like Haskeline has much support for custom keybindings, maybe. We'll probably have to move away from it / enhance it at some point anyway.