path="/path/to/MyFile.mp3"
echo "Playing ${${path##*/}%.*}" # Expect: Playing MyFile
path="/path/to/MyFile.mp3"
tmp=${path##*/}
echo "Playing ${tmp%.*}"
ShellCheck found what appears to be a nested parameter expansion. In
the example, it was hoping to combine ${var##*/}
to strip
the directory and ${var%.*}
to strip the extension.
Parameter expansions can't be nested. Use temporary variables instead, so that each parameter expansion only does a single operation.
Alternatively, if the goal is to dynamically generate and expand a variable name, see SC2082.
None
ShellCheck is a static analysis tool for shell scripts. This page is part of its documentation.