🪲 Exclude end blocks from comments

[boryanagoncharenko]

Fixes #5395
In a specific case, an end block (#ENDBLOCK) is parsed as a comment. This PR excludes end blocks from the definition of comments. Note comments are ignored in the parse tree, while end blocks are not. To ensure we will not leak an end block in an parse error message, I altered the textwithoutspaces to include a potential end block.

How to test

• Ensure that the following program does not produce an error in level 9

repeat 3 times
    print 3
    repeat 5 times
        print 5
    print 1

• Ensure that the following program does not show an error message which leaks a character from the endblock. It should mention that the unexpected character is a new line and not #:

for i in range 1 to 10
    print i

[jpelay]

Hi @boryanagoncharenko! You've probably already tried this, but maybe we can leverage this feature of Lark? https://lark-parser.readthedocs.io/en/stable/examples/fruitflies.html

[jpelay]

Nice work!!!

[mergify]

Thank you for contributing! Your pull request is now going on the merge train (choo choo! Do not click update from main anymore, and be sure to allow changes to be pushed to your fork).

[mergify]

Thank you for contributing! Your pull request is now going on the merge train (choo choo! Do not click update from main anymore, and be sure to allow changes to be pushed to your fork).

[mergify]

Thank you for contributing! Your pull request is now going on the merge train (choo choo! Do not click update from main anymore, and be sure to allow changes to be pushed to your fork).