Support :? shell syntax for variable substitution #4190
Labels
area:configuration
Related to configuring the SDK
sig-issue
spec:miscellaneous
For issues that don't match any other spec label
triage:accepted:ready-with-sponsor
What are you trying to achieve?
Config WG merged a proposal (#3744, #3974, #3948) to support env var expansion syntax with defaults, using the traditional shell syntax
VARNAME:-default
. But shell syntax also commonly includesVARNAME:?error message
syntax for undefined variables which was omitted. This omission is an unexpected behavior to users who are used to shell syntax.Additional context.
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