Why wildcard matching in bash gets different results in bash and source?

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I have a script case 11.2 in +([0-9])?(.+([0-9]))) echo aa;; *) echo bb;; esac

While using source test.sh it prints aa but while using bash test.sh it returns an error

test.sh: line 1: syntax error near unexpected token `('
test.sh: line 1: `case 11.2 in +([0-9])?(.+([0-9])))  echo aa;;   *)  echo bb;; esac'

An workaround is to use bash -i. But why they get different results in interactive and non-interactive mode?

bash
1 Answers

The extended glob patterns (+(...), ?(...), +(...), etc.) require the extglob shell option to be set. Add shopt -s extglob at the beginning of the script.

user_181817900
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