Modifying start and end variable string jinja env variables inside of the user config default context does not work

[codytodonnell]

• Cookiecutter version: 2.6.0
• Template project url: https://github.com/strudel-science/strudel-kit/tree/feature/tf-configs/strudel-cookiecutter/base
• Python version: 3.9.6
• Operating System: Mac Ventura OS 13.6.3

Description:

I am trying to use alternate variable_start_string and variable_end_string values. I am trying to specify these values from the user config yaml instead of the cookiecutter.json.

What I've run:

The name of my template is base (linked above) and I want it to use {@ @} instead of {{ }} for the template strings.

This is what I am running:

cookiecutter --config-file cookiecutter.yaml base

And my cookiecutter.yaml looks like this:

default_context:
  _jinja2_env_vars:
    variable_start_string: "{@"
    variable_end_string: "@}"

But when I run the command I get the following error:

Traceback (most recent call last):
  File "path/bin/cookiecutter", line 8, in <module>
    sys.exit(main())
  File "path/lib/python3.9/site-packages/click/core.py", line 1157, in __call__
    return self.main(*args, **kwargs)
  File "path/lib/python3.9/site-packages/click/core.py", line 1078, in main
    rv = self.invoke(ctx)
  File "path/lib/python3.9/site-packages/click/core.py", line 1434, in invoke
    return ctx.invoke(self.callback, **ctx.params)
  File "path/lib/python3.9/site-packages/click/core.py", line 783, in invoke
    return __callback(*args, **kwargs)
  File "path/lib/python3.9/site-packages/cookiecutter/cli.py", line 203, in main
    cookiecutter(
  File "path/lib/python3.9/site-packages/cookiecutter/main.py", line 182, in cookiecutter
    result = generate_files(
  File "path/lib/python3.9/site-packages/cookiecutter/generate.py", line 315, in generate_files
    template_dir = find_template(repo_dir, env)
  File "path/lib/python3.9/site-packages/cookiecutter/find.py", line 31, in find_template
    raise NonTemplatedInputDirException
cookiecutter.exceptions.NonTemplatedInputDirException

If I add the _jinja2_env_vars to cookiecutter.json, everything works as expected.