Multiline

[cgrand]

Implements multiline edition.

Things to work out:

• autodoc not working on the first line when in multiline (weird maybe a regex issue?)
• ~multiline history doesn't survive restarts.~

[pesterhazy]

This looks great, thanks for working on this! I'd love to get this in ASAP (and we should cut a release after that).

Testing this I've run into a few speed bumps:

• Auto-doc in the first line - I'll look into this.
• Pasting in a multi-line form, you see a flurry of auto-doc and eval results (this is better in master)

• The second line is not indented - I think it should be indented to match the prompt. Maybe like lumo:

  cljs.user=> (
        #_=>  )

• ^up and ^down don't work for me on macOS - they're mapped to some window manager action by default

• This breaks cursor-up and cursor-down in the normal case (single-line editing) - I mean break in the sense that standard readline keys don't work as expected. I'd prefer keymappings that don't break this normal case (single-line) to make room for the special case (multi-line)

  Chez's repl handles this very nicely - up works as expected but only shows the top line. Down cycles through each line. This makes the two directions asymmetric, but this only affects multi-line editing.

• ^R seems to run the expression - this should be reserved for "reverse-isearch", as per standard readline. Unfortunately good terminal keybindings are a bit difficult to find. How about ^J, following chez?
• Typing "(\n" an the ^C throws an exception
• Could you merge in master?

[cgrand]

^C exception, flurry of autodoc should be fixed once I merge.

[cgrand]

except of the indentation in multiline, alles klär

[pesterhazy]

:boom: