Handling multi-line bracketed paste

[thomask77]

Pasting multiple lines does not execute the commands line-by-line as expected.

prompt-toolkit unconditionally activates the "bracketed paste" feature of the terminal emulator:

• https://github.com/prompt-toolkit/python-prompt-toolkit/blob/3.0.43/src/prompt_toolkit/renderer.py#L600-L602

So when I paste multiple lines, get_command() returns a string containing multiple lines:

• https://github.com/click-contrib/click-repl/blob/0.3.0/click_repl/_repl.py#L105

I believe click_repl is missing a loop over split_lines() or similar here.
(This may be more difficult when lines contain a " " string continued over multiple lines - I didn't check that).

As a workaround, I vendored click_repl, and modified def _get_command():

def get_command():
    # 2024-01-24, tk: HACK
    #
    # Workaround for multi-line paste by overriding a function in prompt-toolkit.
    #
    # I didn't find an official way to disable the bracketed_paste feature,
    # because it's always enabled by renderer.py, and handled at a low level
    # in input/vt100_parser.py . Overriding the key binding, etc. didn't help.
    #
    # Please improve if you know a better method!
    # 
    # See https://github.com/click-contrib/click-repl/issues/111
    #
    session.output.enable_bracketed_paste = session.output.disable_bracketed_paste

    return session.prompt()