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There are a lot of non-blank values of $var for which [[ -z $(echo $var | xargs) ]] would return true, like -n, -e \x20, "" '' \ \ \ "", etc, not to mention all the issues related to globbing.

Stéphane Chazelas
– Stéphane Chazelas

2022-01-11 12:48:12 +00:00
Commented Jan 11, 2022 at 12:48
You're confusing $"..." with $'...'

Stéphane Chazelas
– Stéphane Chazelas

2022-01-11 12:48:58 +00:00
Commented Jan 11, 2022 at 12:48

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