Do any of these IRB alternatives support multi-line history? I want to define a function, press up and have the whole function definition there instead of the last line of it -- how it works with Clojure's REPL.
I just implemented it for ripl, http://github.com/cldwalker/ripl, in two ways: https://gist.github.com/939846. First way would put it in your history as a one-liner. The second would let you edit the last code block in your editor. The gist shows an example.
If you want to try this out, simply `gem install ripl ripl-multi_line` and add the gist to ~/.riplrc. Since this is a hack, I would open an issue on https://github.com/janlelis/ripl-multi_line/issues if you want it to be done properly.
If you were talking about using readline's multi-line history, I'm not sure if ruby's readline library has an api to it. Would be useful.
You can change the behavior with the Ripl.config[:multi_line_history] option. Possible values:
* :compact - transform the last statement into a ; separated one-liner
* :block - just join the last multi-line statement to one block ("\n")
* :blank - do nothing
Python's IDLE does this as well. It's hugely frustrating in other REPLs (irb, iPython) to type out a 5-line block only to find that you missed a keystroke on line 2. I'm hoping there's a keyboard shortcut I don't know about.
It does work in ipython it just is annoying to navigate and you have to rely on the automatic indenting a bit more if you are adding anything (as the ...: is missing).
Unless of course you mean history through different sessions as that doesn't work for full functions.
Indents are included with a simple up arrow with ipython, it also works if you are doing a backwards search (C-r), it just doesn't have the nice formatting you get when you first write the function.
