Overview:

Firstly, there is a snippet of code to split the keyword 'before':
https://github.com/openembedded/bitbake/blob/5419a8473d6d4cd1d01537de68ad8d72cf5be0b2/lib/bb/build.py#L952

1. addtask binary_patch after do_unpack before do_deploy_deb

This code has no problem, because it is split into ['do_deploy_deb'].

2. addtask binary_patch after do_unpack before do_deploy_deb # this is a comment

This code is split into ['do_deploy_deb', '#', 'this', 'is', 'a', 'comment'].
Though I think the comment should not be in the split result, fortunately 'do_deploy_deb' is still a valid function what I want.

3. addtask binary_patch after do_unpack before do_deploy_deb# this is a comment

Unfortunately, this code is split into ['do_deploy_deb#', 'this', 'is', 'a', 'comment'], where 'do_deploy_deb#' is not the function I want.

I think the root cause is due to: https://github.com/openembedded/bitbake/blob/5419a8473d6d4cd1d01537de68ad8d72cf5be0b2/lib/bb/parse/parse_py/BBHandler.py#L25

bitbake use regexp to parse addtask, but does not ignore the comment.


Steps to Reproduce: 

1. In your recipe, write a line of code like "addtask A after B before C# comment". Please pay attention that there is no space between "C" and "#".
2. Build the target and check the dependencies.


Actual Results:

No dependency is added between A and C.


Expected Results:

There is a before dependency between A and C.


Build Date & Hardware:

Build 2023-10-09 on Debian 11


Additional Information: 

I don't know the whole procedure of how bitbake parse recipes.
- Maybe the bug is due to bitbake having no step to remove all the comments before parsing other syntaxes.
- Maybe changing the regular expression is one solution. (Other regular expressions may have the same bug.)
- Maybe it is acceptable to just write some hints in the documentation.