'Versionitis'

Versionitis is a serious disease that mostly attacks software that is GPL'ed. So it is with A. Graefs TP Yacc.
The course of the disease is as follows: (ordered by origin; filedate is latest file's date)
 (The latest main branch release should always be available from http://www.musikwissenschaft.uni-mainz.de/~ag/tply/tply.html)

			Name: TP Lex and Yacc Version: 3.0 Author: Albert Graef EMail: see below or sources Date: [April 1991] Filename: LYPrg.zip Filedate: 13.May.1992 Filesize: 120.576 URL: [is out of date!]
			Name: TPLY Version: 3.0a Author: Albert Graef EMail: []   has given up development, see link Date: [May 1992] Filename: tplye30a.zip / tplyh30a.zip Filedate: 26.March.1997 Filesize: 109.716 / 78.695 URL: http://www.musikwissenschaft.uni-mainz.de/~ag/tply/tply.html
			Name: ParseurDelphi Version: 1.02 Author: Thierry Coq EMail: Date: 28.May.1998 Filename: DelphYacc.zip Filedate: 28.May.1998 Filesize: 974.841 URL: http://wwwusers.imaginet.fr/~tcoq/US-lexyacc.html
			Name: Delphi Lex & Yacc Version: [derived from Thierry Coq's] Author: Chris P. Osborne EMail: Date: [18 Oct 2000 ] Filename: lexyacc.zip Filedate: 16.October.2000 Filesize: 313.305 URL: http://dspace.dial.pipex.com/town/plaza/ag81
			Name: DYacc Version: 3.0ag.1 Author: Robert Zierer (that's me) EMail: see button at end of page! Date: [July 1999] Filename: dyacc3.0ag.1.zip Filedate: 24.July.1999 Filesize: 308.446 URL: http://www.geocities.com/robertzierer/
			Name: TP Lex/Yacc hacked for Delphi 2+ Compatibility Version: 3.0e (release E) Author: Alexey Mahotkin EMail: , . FidoNet: Alexey Mahotkin, 2:5020/433 Date: [28Apr98] Filename:  tplyh30e.zip    tplyh30f.zip Filedate:  16.July.1998    25.October.1999 Filesize:  202.712    205.491 URL: http://alexm.here.ru:8080
			Name: The Version used with FPC-Pascal Version: 4.1 ?? Author, EMail, Date: ?? Filename: tply41.zip Filedate: 29.May.98 Filesize: 165.876 URL: ftp://tflily.fys.kuleuven.ac.be/pub/fpc/dist/tply41.zip       http://www.brain.uni-freiburg.de/~klaus/fpc/       http://www.brain.uni-freiburg.de/~klaus/fpc/fpc.html
			Name: see above Version: 4.00 Author: Berend de Boer EMail: Date: [Oct 96] Filename: YaccLex.zip Filedate: 15.April.1998 Filesize: 190.452 URL:
			Name: TPLY Version: 4.1 / 4.01 Author: Berend de Boer EMail: Date: [Oct 1996] Filename: tply41.zip / tply401.zip Filedate: 29.May.1998 / 21.March.1997 Filesize: 165.876 / 164.801 URL: http://www.musikwissenschaft.uni-mainz.de/~ag/tply/tply.html      ftp://garbo.uwasa.fi/pc/turbopas
			Name: Delphi Yacc & Lex [1.0] (for Borland Delphi 6, Kylix 3) Version: [derived from version 4.1 by Albert Graef et al.] Author: Michiel Rook EMail: Date: [Dec 2003] Filename: Linux: dyacclex-1.0.tar.gz / Windows: dyacclex-1.0.zip Filedate: 19.Dec.2003 / 19.Dec.2003 Filesize: 74.331 / 102.783 URL: http://www.grendelproject.nl/dyacclex/Delphi Yacc & Lex.html

Bug warning: There is a bug in almost all old versions of TPLex, see Tools.html#Bug
But this will only show up when compiling the package with other Compilers or trying to modify TPLex.

Other links:

• A list at eGroups
  Description:  This list is dedicated to the development of the Delphi Compiler Generator.
  http://www.egroups.com/group/DCG_List
  now http://groups.yahoo.com/group/DCG_List    ceased to exist.

All of these are, of course, incompatible with each other. If they should be - by chance - compatible they will become incompatibel by the next release. To be continued.