Feature Request: Get current readline buffer (rl_line_buffer)

[avuserow]

I would like a method to get the current readline buffer. This is useful when I'm creating a custom function that is bound to a key, so that I can do actions based on the previous text.

This value is stored in the rl_line_buffer global variable, so cglobal('readline', 'rl_line_buffer', Str); would work.