solved. 

eval { $converted_text   = `../Desktop/p2t -nodiag -layout -enc UTF-8 
+$PathDocumentUnicode -` }

[download]

Why I have to add '..' is not clear to me. But it does the trick.

In reply to Re: use of Backticks to catch console output by Takamoto
in thread use of Backticks to catch console output by Takamoto

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