9.0.0 outputs control characters with '---color=no'

[lhupfeldt]

When running pytest >=9.0.0 in emacs compilation mode I get:

test/lib/logging_filters_test.py �]9;4;1;36�\.�]9;4;1;36�\.          [ 36%]

Adding --color=no has no effect.

Pre 9.0.0 I get

test/lib/logging_filters_test.py ..                       [ 36%]

Adding --color=no is not required.

[jatimix]

Same issue here.

Seems comming from #13728 which added some code to support terminal progress
in emacs the $TERM usually point to "dumb", could it be related ?

tests/api/gk_do/test_images.py .�]9;4;1;0�\.�]9;4;1;0�\.�]9;4;1;0�\.�]9;4;1;0�\.�\.�]9;4;1;0�\.�]9;4;1;0�\.�]9;4;1;0�\.�]9;4;1;0�\.�]9;4;1;0�\.�]9;4;1;0�\.�]9;4;1;0�\.�]9;4;1;0�\.�]9;4;1;0�\.�]9;4;1;0�\.�]9;4;1;0�\.�]9;4;1;0�\.�]9;4;1;0�\.�]9;4;1;0�\.�]9;4;1;0�\.�]9;4;1;0�\.�]9;4;1;0�\.�]9;4;1;0�\.�]9;4;1;0�\.�]9;4;1;0�\.�]9;4;1;0�\.�]9;4;1;0�\.�]9;4;1;0�\.�]9;4;1;0�\.�]9;4;1;0�\.�]9;4;1;0�\.�]9;4;1;0�\.�]9;4;1;0�\.�]9;4;1;0�\.�]9;4;1;0�\.�]9;4;1;0�\.�]9;4;1;0�\.�]9;4;1;0�\.�]9;4;1;0�\.�]9;4;1;0�\.�]9;4;1;0�\.�]9;4;1;0�\.�]9;4;1;0�\.�]9;4;1;0�\.�]9;4;1;0�\.�]9;4;1;0�\.�]9;4;1;0�\  C-c C-c�]9;4;0;�\

[bluetech]

If the problem is the terminal progress, then it will be resolved by #13971. If you're looking for a workaround until the next point release, you can use -p no:terminalprogress.

Although we should test that the TERM is not dumb as well, this way it won't have this issue even if explicitly enabled. I forgot about that, so thanks for reporting. I will add that to #13971.

[lhupfeldt]

It is correct that TERM=dumb in EMACS comilation mode.

I have tried with --color=yes and -p no:terminalprogress, I have the EMACS ansi-color plugin enabled in the compilation buffer. This makes it work.

The terminal width is not interpreted correctly though, a window resize after pytest has been started fixes that.

The initial terminal width was as wide as the final one, I made the window smaller end larger again.
The terminal with issue is not new.