Fifth Annual Tcl/Tk Workshop, 1997 ## Writing a Tcl Extension in Only... 7 Years Don Libes National Institute of Standards and Technology Gaithersburg, MD ### Abstract Expect is a tool for automating interactive applications. Expect was constructed using Tcl, a language library designed to be embedded into applications. This paper describes experiences with Expect and Tcl over a seven year period. These experiences may help other extension designers as well as the Tcl developers or developers of any other extension language see some of the challenges that a single extension had to deal with while evolving at the same time as Tcl. Tcl and Expect users may also use these 'war stories' to gain insight into why Expect works and looks the way it does today. View the full text of this paper in HTML form, PDF (52688 Bytes) form, and POSTSCRIPT (213776 Bytes) form. To Become a USENIX Member, please see our Membership Information.

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