Extra % token at end of gammapy environment yaml file with zsh

[GernotMaier]

Gammapy version

installation of 0.20.1

Bug description

Extra invisible token % at the end of gammapy-0.20.1-environment.yml leads to unexpected system behaviour (e.g. any conda command expected a y/N entry). I've tried this twice and could reproduce the error. Removing the % solves the issue.

cat gammapy-0.20.1-environment.yml
 # Conda environment for Gammapy version 0.20.1
# Install:    conda env create -f gammapy-0.20.1-environment.yml
# Activate:   conda activate gammapy-0.20.1
# Deactivate: conda deactivate

name: gammapy-0.20.1

channels:
  - conda-forge
  - sherpa

variables:
  PYTHONNOUSERSITE: "1"

dependencies:
  - gammapy=0.20.1
  - python=3.8
  - ipython=8.3
  - cython
  - jupyter
  - jupyterlab=3.4.0
  - pyyaml=6.0
  - click=8.1.3
  - numpy=1.22.3
  - scipy=1.8.0
  - pandas=1.4.2
  - matplotlib=3.5.2
  - astropy=5.0
  - regions=0.6
  - iminuit=2.11.2
  - sherpa=4.14.0
  - healpy=1.15
  - naima=0.10.0
  - pydantic=1.9.0
  - emcee=3.1.1
  - corner=2.2.1
  - pip
  - requests%

Expected behavior
A clear and concise description of what you expected to happen.

To Reproduce

Above issue occurs while working on SL 7.9 with conda 4.12.0 and mamba 0.15.3. Tried is also on OS X without issues.

Other information
Any other information you think will be useful for us to fix the issue can go here.

[adonath]

Thanks @GernotMaier! I cannot see the percent sign in the source file. I wonder whether it's rather the behavior with the zsh shell. See e.g. https://stackoverflow.com/a/44276199/19802442 or https://unix.stackexchange.com/questions/167582/why-zsh-ends-a-line-with-a-highlighted-percent-symbol

The fix might still be just to include a new line at the end in the environment.yml file?

[GernotMaier]

Yes, I am using zsh and it pretty much looks like this is a zshell issue - how annoying is that!

I've tested it and a newline solves the problem, thanks!

(I let you close the issue)