"Joel E. Denny" <[EMAIL PROTECTED]> wrote: > How can I obtain a copy of AT&T pic? This page makes it seem as if I > won't have much luck: > > http://troff.org/source.html > > It links to Plan 9, which has pic source here: > > http://plan9.bell-labs.com/sources/plan9/sys/src/cmd/pic/ > > Its lexer returns left as a CORNER token only when preceded by "." or > followed by "of", so it can't be the inspiration for the GNU pic behavior > I'm observing. > > The Heirloom project has similar source and its lexer does the same thing: > > http://heirloom.cvs.sourceforge.net/heirloom/heirloom-doctools/pic/
Plan 9 pic is AT&T pic. The Heirloom variant is a Unix port of it with only a few modifications, as documented in its "CHANGES" file. You could probably still buy another variant of AT&T pic as part of the DWB package of the "Lucent Exptools" suite <http://www.bell-labs.com/project/wwexptools/corporate/toollist.html>. However, it is unlikely that this gives you any additional insight since all sources agree that AT&T DWB development stopped more than a decade ago. Gunnar
