Dashes in variable names <=> `environment:` block

[simonhammes]

Dashes can be used in variable names (#336).

However, I'm unable to use a variable that contains dashes in an environment: block since compose interprets the dash as a separator between the variable name and its default value:

environment:
  VAR-WITH-DASHES: ${VAR-WITH-DASHES}

Is there any way to escape the dash or is this a bug/unimplemented functionality?

[ndeloof]

- indeed is delimiter for default value, which makes #336 actually irrelevant 😓
I guess we should revert, as this issue demonstrate this "feature" was incomplete and can't be used anyway
cc @jhrotko @glours

[KasonBraley]

@glours Can this bug fix be released in a patch so compose can release a version with the fix?

docker/compose#12123

[ndeloof]

no worries, this will be part of the next compose release coming soon.
Cheers