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    print "`set tmp` returned:", `set tmp`, " and had an exit code of:$?",
+$/;
print "`set non-existant-env` returned:", `set non-existant-env`, " an
+d had an exit code of:$?",$/;
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    `set tmp` returned:TMP=D:\TEMP
 and had an exit code of:0
Environment variable non-existant-env not defined
`set non-existant-env` returned: and had an exit code of:256