Indent behaviour on paste is different in terminal and AWS CloudShell

[iakov-aws]

Hello,

I notice a difference in behavior of following code in terminal win/macos/linux vs AWS CloudShell.

from prompt_toolkit import prompt
answer = prompt( "Multiline input: >\", multiline=True)
print(answer)

In AWS CloudShell the text pasted is

In other terminals paste works as expected

As per doc multi-line activates indent mode and it works fine. But on AWS CloudShell paste works combined with indent but with other terminals it works some other way not indenting the pasted input.

Most likely prompt-toolkit detects paste action but in AWS CloudShell the paste mechanism is not detectable(?).

Is there a way to deactivate auto indent on multi-line mode any other way to make paste work on AWS CloudShell ?

[iakov-aws]

Here is one possible option to do that. Wonder if there are better ways?

import os
from prompt_toolkit import PromptSession

def prompt(**kwargs):
    session = PromptSession(**kwargs)
    if os.environ.get('AWS_EXECUTION_ENV') == 'CloudShell':
       session.app.paste_mode = lambda: True # avoid auto-indent in CloudShell
    return session.prompt()