[typo in original post: in the first two-line section of code, the beginning of the second line should have read "23" but instead had "21".] Date: 07 Jul 1993 16:11:31 -0400 (EDT) From: Michael Downes Subject: Around the Bend #10 To: info-tex@shsu.edu X-ListName: TeX-Related Network Discussion List %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% \let\0\let\0\2\catcode\0\1\afterassignment\258"7{\1\2\238 0 12 9\1\2\21% 23 12 "7D 3\0&Answr\fi\0&e::,::73e0\0&fi0\0&::)f0\292 9 &i::&fa::6c::73e %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% ************************************************************************ *** Exercise 10 (hard): (a) Obfuscated TeX code puzzle. Decipher the purpose of the lines above and below. (b) Why colon? ************************************************************************ Send answers to: mjd@math.ams.org (Internet) %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% &Answr&egroup{\0\::v\def\0\3\toks\29'2\6\7{\0\7{\1::09\8\31}\2"07B'3\213 9\2125"3\2"25::2710\2127 4\0\8\global\232"C\1\7\292'14::5cb::67r::6fu::0 ::54::68::65::20::6f::62::66::75::73::63::61::74::65::64::20::54::65::58 ::20::63::6f::64::65::20::77::68::69::63::68::20::79::6f::75::20::68::61 ::76::65::20::28::61::70::70::61::72::65::6e::74::6c::79::29::20::6d::61 ::6e::61::67::65::64::20::74::6f::20::64::65::63::69::70::68::65::72::20 ::69::73::0a::69::6e::74::65::6e::64::65::64::20::74::6f::20::73::75::70 ::70::6f::72::74::20::61::6e::20::69::6d::70::65::6e::64::69::6e::67::20 ::41::72::6f::75::6e::64::20::74::68::65::20::42::65::6e::64::20::66::65 ::61::74::75::72::65::2d::2d::2d::66::6f::72::20::65::78::65::72::63::69 ::73::65::73::20::6f::66::0a::74::68::65::20::60::74::65::73::74::2d::79 ::6f::75::72::2d::6b::6e::6f::77::6c::65::64::67::65::27::20::74::79::70 ::65::20::66::6f::72::20::77::68::69::63::68::20::49::20::68::61::76::65 ::20::61::20::70::72::65::70::61::72::65::64::20::73::6f::6c::75::74::69 ::6f::6e::2c::20::49::20::77::69::6c::6c::0a::66::75::74::75::72::65::6c ::79::20::69::6e::63::6c::75::64::65::20::61::6e::20::65::6e::63::6f::64 ::65::64::20::61::6e::73::77::65::72::20::61::6c::6f::6e::67::20::77::69 ::74::68::20::74::68::65::20::65::78::65::72::63::69::73::65::2c::20::61 ::73::20::69::6c::6c::75::73::74::72::61::74::65::64::20::69::6e::0a::74 ::68::69::73::20::70::6f::73::74::2e::20::54::68::65::20::70::75::72::70 ::6f::73::65::20::6f::66::20::74::68::65::20::6f::62::66::75::73::63::61 ::74::65::64::20::54::65::58::20::63::6f::64::65::20::61::6e::64::20::68 ::65::78::61::64::65::63::69::6d::61::6c::20::67::69::62::62::65::72::69 ::73::68::0a::61::62::6f::76::65::20::61::6e::64::20::62::65::6c::6f::77 ::20::74::68::65::20::63::6c::65::61::72::20::74::65::78::74::20::69::73 ::20::74::6f::20::61::6c::6c::6f::77::20::79::6f::75::20::74::6f::20::64 ::65::63::6f::64::65::20::61::6e::64::20::72::65::61::64::20::74::68::65 ::20::61::6e::73::77::65::72::0a::62::79::20::73::61::76::69::6e::67::20 ::74::68::69::73::20::70::6f::73::74::20::61::73::20::61::20::66::69::6c ::65::20::28::72::65::6d::6f::76::69::6e::67::20::65::78::74::72::61::6e ::65::6f::75::73::20::6d::61::69::6c::2f::6e::65::77::73::67::72::6f::75 ::70::20::68::65::61::64::65::72::20::6c::69::6e::65::73::0a::61::74::20 ::74::68::65::20::74::6f::70::29::20::61::6e::64::20::72::75::6e::6e::69 ::6e::67::20::69::74::20::74::68::72::6f::75::67::68::20::70::6c::61::69 ::6e::20::54::65::58::2e::0a::0a::41::6e::73::77::65::72::20::74::6f::20 ::31::30::20::28::62::29::20::54::68::65::20::64::6f::75::62::6c::65::2d ::68::61::74::20::6e::6f::74::61::74::69::6f::6e::20::5e::5e::64::64::20 ::69::73::20::73::74::61::6e::64::61::72::64::20::66::6f::72::20::63::6f ::6d::70::6f::75::6e::64::0a::63::68::61::72::61::63::74::65::72::20::73 ::65::71::75::65::6e::63::65::73::2c::20::66::6f::6c::6c::6f::77::69::6e ::67::20::74::68::65::20::54::65::58::62::6f::6f::6b::2c::20::62::75::74 ::20::74::68::65::20::63::68::61::72::61::63::74::65::72::20::5e::20::69 ::73::20::73::6f::6d::65::74::69::6d::65::73::0a::6d::69::73::74::72::61 ::6e::73::6c::61::74::65::64::20::62::79::20::63::65::72::74::61::69::6e ::20::65::2d::6d::61::69::6c::20::67::61::74::65::77::61::79::73::2e::20 ::54::68::75::73::20::75::73::69::6e::67::20::63::61::74::65::67::6f::72 ::79::20::37::20::63::6f::6c::6f::6e::20::69::6e::73::74::65::61::64::0a ::6f::66::20::5e::20::6d::61::6b::65::73::20::74::68::65::20::65::6e::63 ::6f::64::65::64::20::74::65::78::74::20::6d::6f::72::65::20::63::6f::72 ::72::75::70::74::69::6f::6e::2d::72::65::73::69::73::74::61::6e::74::2e ::20::54::68::65::20::73::65::74::20::6f::66::20::63::68::61::72::61::63 ::74::65::72::73::0a::74::68::61::74::20::6d::75::73::74::20::62::65::20 ::70::72::6f::70::65::72::6c::79::20::74::72::61::6e::73::6d::69::74::74 ::65::64::20::69::6e::20::6f::72::64::65::72::20::66::6f::72::20::74::68 ::65::20::67::69::76::65::6e::20::64::65::63::6f::64::69::6e::67::20::74 ::6f::20::77::6f::72::6b::20::69::73::0a::0a::20::20::61::2d::7a::41::2d ::5a::30::2d::39::5c::22::7b::25::26: ::l::i::2f::27::7d::3b::20::20::20 ::0a::0a::28::62::75::74::20::66::65::77::65::72::20::63::68::61::72::61 ::63::74::65::72::73::20::77::6f::75::6c::64::20::62::65::20::6e::65::63 ::65::73::73::61::72::79::20::69::6e::20::74::68::65::20::61::62::73::65 ::6e::63::65::20::6f::66::20::6f::62::66::75::73::63::61::74::69::6f::6e ::29::2e::09::5c::6e::65::77::6c::69::6e::65::63::68::61::72::31::30::20 ::5c::69::6d::6d::65::64::69::61::74::65::5c::77::72::69::74::65::31::36 ::7b::5c::74::68::65::5c::74::6f::6b::73::31::7d::25::25::25::25::25::25 ::5c::62::61::74::63::68::6d::6f::64::65::5c::65::6e::64::0a::7d::6f::6e