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${var:+FOO} mishandles empty vars #53

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jwilk opened this issue Mar 21, 2023 · 0 comments

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jwilk commented Mar 21, 2023

$ export empty=''
$ echo '[${empty:+FOO}]' | envsubst 
[FOO]

This is not what shell does:

$ echo "[${empty:+FOO}]"
[]

jwilk changed the title ~~${var:-FOO} mishandles empty vars~~ ${var:+FOO} mishandles empty vars

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