backend/env: treat empty environment variables as not found #78
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It's very unusual to distinguish between an environment variable that's unset and one that's empty. When a value is required, looking for a non-empty environment variable feels more correct. As a recent example, the kafka-go config contained a "required" entry for `KAFKA_ADDRS` which was satisfied by an empty environment variable.
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It's very unusual to distinguish between an environment variable
that's unset and one that's empty. When a value is required, looking
for a non-empty environment variable feels more correct.
As a recent example, the kafka-go config contained a "required" entry
for
KAFKA_ADDRSwhich was satisfied by an empty environmentvariable.