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Updated SC2154 (markdown)

Tom Hughes
2020-02-20 09:39:18 -08:00
parent ab166b1ef9
commit 7c7782016b
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SC2154.md

@@ -52,4 +52,4 @@ Note: This message only triggers for variables with lowercase characters in thei
ShellCheck intentionally does not attempt to figure out runtime or dynamic assignments like with `source "$(date +%F).sh"` or `eval var=value`. See [[SC2034]] for an extended discussion of why this is the case.
If you know for a fact that the variable is set, you can use `${var:?}` to fail if the variable is unset (or empty), or explicitly initialize/declare it with `var=""` or `declare var`. You can also disable the message with a [[directive]].
If you know for a fact that the variable is set, you can use `${var:?}` to fail if the variable is unset (or empty), initialize it to a default value if uninitialized with `: "${var:=}"`, or explicitly initialize/declare it with `var=""` or `declare var`. You can also disable the message with a [[directive]].