update: this explanation is wrong - see chromatic post below.

The first time the if-condition is false, you are "autovivifying" a global variable "$namedisplay".

Whenever the if-condition is false again, the global variable will be in scope and the old value will show up.

You can catch this with "use strict;".

In reply to Re: will you explain what's going on? by fglock
in thread will you explain what's going on? by maard

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