Regression in tox 3.21

[AntoineD]

It looks like tox 3.21 is swallowing whatever comes after a : inside curly braces.

For instance, with the tox.ini from tox-conda:

commands =
    pytest {posargs: \
      --junitxml {toxworkdir}/junit.{envname}.xml --cov {envsitepackagesdir}/tox_conda --cov tests \
      --cov-config=tox.ini --no-cov-on-fail --cov-report term-missing --cov-context=test \
      --cov-report html:{envtmpdir}/htmlcov \
      --cov-report xml:{toxworkdir}/coverage.{envname}.xml \
      tests --timeout 180 --durations 5}

With tox 3.20 is executed:

py39 run-test: commands[0] | pytest --junitxml /home/antoine.dechaume/tox-conda/.tox/junit.py39.xml --cov /home/antoine.dechaume/tox-conda/.tox/py39/lib/python3.9/site-packages/tox_conda --cov tests --cov-config=tox.ini --no-cov-on-fail --cov-report term-missing --cov-context=test --cov-report html:/home/antoine.dechaume/tox-conda/.tox/py39/tmp/htmlcov --cov-report xml:/home/antoine.dechaume/tox-conda/.tox/coverage.py39.xml tests --timeout 180 --durations 5

But with 3.21 we get:

py39 run-test: commands[0] | pytest --junitxml /home/antoine.dechaume/tox-conda/.tox/junit.py39.xml --cov /home/antoine.dechaume/tox-conda/.tox/py39/lib/python3.9/site-packages/tox_conda --cov tests --cov-config=tox.ini --no-cov-on-fail --cov-report term-missing --cov-context=test --cov-report html

[gaborbernat]

@jayvdb I think this is also because of your changes if you can take a look 👏

[jayvdb]

yup, probably #1715

[jayvdb]

Another one caused by #1697

[gaborbernat]

Released now via https://tox.readthedocs.io/en/latest/changelog.html#v3-21-1-2021-01-13