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set dollar1 "this string contains an unescaped dollar sign -> \\$foo" set dollar2 "this string contains an escaped dollar sign -> \$foo \\\$foo" set bracket1 "this contains an unescaped bracket [NoSuchProc]" set bracket2 "this contains an escaped bracket \[NoSuchProc\]" set bracket3 "this contains nested unescaped brackets [[NoSuchProc]]" proc testProc {} {}