Bug report

Bug description:

When editing the last line in a function in the new REPL, hitting Enter doesn't end the block if the last line has indentation on it.

Demo of the bug,demo of what IPython does

Originally posted in#111201 (comment)

Here are the noticeable differences in how IPython handles this situation:

1. When hitting the up arrow key to edit the block, the final blank line isn't included (the default cursor position is at the end of the last non-empty line.

2. In IPython I tried purposely adding extra whitespace-only lines (not fully blank but instead containing 4 spaces) by hitting Enter, up arrow, End, Enter, up arrow, End, repeatedly. If I then hit Enter on the first line-followed-by-whitespace-only-lines it ends the block.

3. Hitting up arrow again, will strip whitespace from the end of the block (maybe this is how 1 above is implemented)

Implementing the behavior of 1 (or 3) above might be enough, though 2 seems like it would be even better.

CPython versions tested on:

3.13

Operating systems tested on:

Linux

Linked PRs

• gh-118911: Trailing whitespace in a block shouldn't prevent the user from terminating the code block #119355
• [3.13] gh-118911: Trailing whitespace in a block shouldn't prevent the user from terminating the code block (GH-119355) #119404