TIP #440: ADD ENGINE TO TCL_PLATFORM ARRAY 
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 Version:      $Revision: 1.13 $
 Author:       Joe Mistachkin <joe_at_mistachkin.com>
               Jan Nijtmans <jan.nijtmans_at_gmail.com>
 State:        Final
 Type:         Project
 Tcl-Version:  8.5
 Vote:         Done
 Created:      Thursday, 14 January 2016
 URL:          https://tip.tcl-lang.org440.html
 Post-History: 

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 ABSTRACT 
==========

 This TIP proposes a mechanism for determining the implementation of the 
 Tcl language currently in use. 

 RATIONALE 
===========

 There is more than one implementation of the Tcl language (see 
 [<URL:http://wiki.tcl.tk/13992>]). These implementations differ greatly 
 in their degree of compatibility and completeness. At the script level, 
 there is currently no standard way to determine which implementation of 
 the Tcl language is being used. 

 SPECIFICATION 
===============

 The *engine* element will be added to the *tcl_platform* array. Its 
 value will be set to *"Tcl"*. 

 REFERENCE IMPLEMENTATION 
==========================

 A reference implementation of this TIP is available 
 [<URL:https://core.tcl.tk/tcl/timeline?r=tclPlatformEngine>]. 

 The TH1, Jim, Picol, JTcl, and Eagle implementations of the Tcl 
 language already implement this feature, each using the name of the 
 project as the value of the *tcl_platform(engine)* element. 

 COPYRIGHT 
===========

 This document has been placed in the public domain. 

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