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org.sonar.l10n.shellcheck.rules.shellcheck.SC2068.html Maven / Gradle / Ivy

Double quote array expansions to avoid re-splitting elements.
Problematic code
cp $@ ~/dir

Correct code
cp "$@" ~/dir

Rationale
Double quotes around $@ (and similarly, ${array[@]}) prevents globbing and word splitting of individual elements, while still expanding to multiple separate arguments.
Let's say you have three arguments: baz, foo bar and *
"$@" will expand into exactly that: baz, foo bar and *
$@ will expand into multiple other arguments: baz, foo, bar, file.txt and otherfile.jpg
Since the latter is rarely expected or desired, ShellCheck warns about it.
Exceptions
When you want globbing of individual elements.