<html><head><meta http-equiv="Content-Type" content="text/html charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class="">Thank you, Ross,<div class="">I must confess I am not skilled at “hacking” input code. I will try your first advise though, it seems doable given my very limited skills.</div><div class=""><br class=""></div><div class="">I have been considering more and more the switch from plain TeX to LaTeX. The problem is, I have scores (a lot!) of files in plain TeX that I have been produced over the years, by me, and/or shamelessly borrowed from more skilled programmers; an example: code that produces a set of problems with hints and answers, so that the hints and the answers are afterwards printed separately. Even more basic things, like matrix commands (\pmatrix{…} and the like) are not recognized by LaTeX, and are not easily translatable. So, I am still struggling with plain TeX.</div><div class=""><br class=""></div><div class="">Best,</div><div class=""> Juan</div><div class=""><br class=""><div><blockquote type="cite" class=""><div class="">On Jul 13, 2016, at 6:00 PM, Ross Moore <<a href="mailto:ross.moore@mq.edu.au" class="">ross.moore@mq.edu.au</a>> wrote:</div><br class="Apple-interchange-newline"><div class=""><span style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px; float: none; display: inline !important;" class="">Hi Juan,</span><div class="" style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px;"><br class=""><div class=""><blockquote type="cite" class=""><div class="">On Jul 14, 2016, at 7:28 AM, juan tolosa <<a href="mailto:juantolo@me.com" class="">juantolo@me.com</a>> wrote:</div><br class="Apple-interchange-newline"><div class=""><div class="" style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;">I am baffled. Since I joined the Mac OS TeX community, I was given a method for processing pictures in plain TeX, which has been working seamlessly—until today. <div class="">I had transitioned from TeXtures, which used the \special{…} command for inserting pictures, to a more transparent, and more universally accepted method.</div><div class=""><br class=""></div><div class="">In particular, I used</div><div class="">\input miniltx.tex</div><div class="">and next, something like</div><div class="">\RequirePackage{graphicx} </div><div class="">and then I inserted pictures using, for example</div><div class="">\includegraphics[height=60mm]{RubiKo}</div><div class=""><br class=""></div><div class="">Today, to my surprise, I found the method is not working anymore.</div><div class=""><br class=""></div><div class="">As soon as the \input miniltx.tex is typeset, I get an error. The console displays:</div><div class=""><br class=""></div><div class=""><div class="" style="margin: 0px; font-size: 10px; line-height: normal; font-family: Monaco;">This is pdfTeX, Version 3.14159265-2.6-1.40.17 (TeX Live 2016) (preloaded format=pdftex)</div><div class="" style="margin: 0px; font-size: 10px; line-height: normal; font-family: Monaco;"> \write18 enabled.</div><div class="" style="margin: 0px; font-size: 10px; line-height: normal; font-family: Monaco;">entering extended mode</div><div class="" style="margin: 0px; font-size: 10px; line-height: normal; font-family: Monaco;">(./PicturesInPlainTex.tex</div><div class="" style="margin: 0px; font-size: 10px; line-height: normal; font-family: Monaco;">(/usr/local/texlive/2016/texmf-dist/tex/plain/graphics-pln/miniltx.tex)</div></div></div></div></blockquote><div class=""><br class=""></div><div class="">miniltx.tex doesn’t define everything from LaTeX.</div><div class="">It only gives you enough to do some basic things.</div><div class="">The more LaTeX packages that you try to use, the more</div><div class="">you’ll encounter things that LaTeX uses, but haven’t been supported in miniltx.</div><div class="">So you need to be prepared to write snippets of patch coding when this occurs.</div><div class=""><br class=""></div><br class=""><blockquote type="cite" class=""><div class=""><div class="" style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;"><div class=""><div class="" style="margin: 0px; font-size: 10px; line-height: normal; font-family: Monaco;">(/usr/local/texlive/2016/texmf-dist/tex/latex/graphics/graphicx.sty</div><div class="" style="margin: 0px; font-size: 10px; line-height: normal; font-family: Monaco;">(/usr/local/texlive/2016/texmf-dist/tex/latex/graphics/keyval.sty)</div><div class="" style="margin: 0px; font-size: 10px; line-height: normal; font-family: Monaco;">(/usr/local/texlive/2016/texmf-dist/tex/latex/graphics/graphics.sty</div><div class="" style="margin: 0px; font-size: 10px; line-height: normal; font-family: Monaco;">(/usr/local/texlive/2016/texmf-dist/tex/latex/graphics/trig.sty)</div><div class="" style="margin: 0px; font-size: 10px; line-height: normal; font-family: Monaco;">(/usr/local/texlive/2016/texmf-dist/tex/latex/graphics-cfg/graphics.cfg)</div><div class="" style="margin: 0px; font-size: 10px; line-height: normal; font-family: Monaco;">(/usr/local/texlive/2016/texmf-dist/tex/latex/graphics-def/pdftex.def</div><div class="" style="margin: 0px; font-size: 10px; line-height: normal; font-family: Monaco;">(/usr/local/texlive/2016/texmf-dist/tex/generic/oberdiek/infwarerr.sty)</div><div class="" style="margin: 0px; font-size: 10px; line-height: normal; font-family: Monaco;">(/usr/local/texlive/2016/texmf-dist/tex/generic/oberdiek/ltxcmds.sty)</div><div class="" style="margin: 0px; font-size: 10px; line-height: normal; font-family: Monaco;">/usr/local/texlive/2016/texmf-dist/tex/latex/graphics-def/pdftex.def:1569: Unde</div><div class="" style="margin: 0px; font-size: 10px; line-height: normal; font-family: Monaco;">fined control sequence.</div><div class="" style="margin: 0px; font-size: 10px; line-height: normal; font-family: Monaco;">l.1569 \@ifpackageloaded</div><div class="" style="margin: 0px; font-size: 10px; line-height: normal; font-family: Monaco;"> {pst-pdf}% hv 20160630</div></div></div></div></blockquote><div class=""><br class=""></div><div class="">The graphics-def/ bundle is very, very new — see that date: 2016-06-30 !!!</div><div class="">It is about uniformising the different .def files for different processing engines.</div><div class=""><br class=""></div><div class="">Here it seems to be calling a revised pdftex.def which is now checking</div><div class="">whether some other package pst-pdf has been loaded.</div><div class="">Unfortunately the \@ifpackageloaded command isn’t supported in miniltx.tex .</div><div class=""><br class=""></div><div class="">What to do?</div><div class=""><br class=""></div><div class="">If you have an older distribution available, find the pdftex.def file from there.</div><div class="">Put a copy into the local directory where you are processing your job.</div><div class="">Hopefully you will have no further problem — this time!</div><div class=""><br class=""></div><div class=""><br class=""></div><div class="">If not, then you’ll need to do some hacking.</div><div class="">Take a copy of the actual pdftex.def to your working directory.</div><div class="">Look inside it for how \@ifpackageloaded is being used;</div><div class="">that is, how many arguments does it take? </div><div class="">Comment-out those lines.</div><div class="">Test your job. How much further does it get?</div><div class="">Do this kind of thing for each such problem.</div><div class=""><br class=""></div><div class="">Eventually you should be left with something that works —this time!</div><div class=""><br class=""></div><div class=""><br class=""></div><div class="">Even more eventually, you should switch to using the full LaTeX.</div><div class="">Appreciate it’s power and flexibility, and all the good work that others put into it.</div><div class=""><br class=""></div><div class=""><br class=""></div><div class="">Or maybe one of the LaTeX developers will consider the use-case</div><div class="">of \input miniltx.tex when further developing graphics-def .</div><div class="">That won’t help you today, but maybe in the near future.</div><div class=""><br class=""></div><br class=""><blockquote type="cite" class=""><div class=""><div class="" style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;"><div class=""><div class="" style="margin: 0px; font-size: 10px; line-height: normal; font-family: Monaco;">? </div><div class="" style="margin: 0px; font-size: 10px; line-height: normal; font-family: Monaco;">Process aborted</div></div><div class="" style="margin: 0px; font-size: 10px; line-height: normal; font-family: Monaco;"><br class=""></div><div class="" style="margin: 0px; font-size: 10px; line-height: normal; font-family: Monaco;">Does anyone have an advice?</div><div class="" style="margin: 0px; font-size: 10px; line-height: normal; font-family: Monaco;">Thanks,</div><div class="" style="margin: 0px; font-size: 10px; line-height: normal; font-family: Monaco;"> Juan</div></div></div></blockquote><br class=""></div><div class=""><br class=""></div><div class="">Hope this helps.</div><div class=""><br class=""></div><div class=""><span class="Apple-tab-span" style="white-space: pre;"></span>Ross</div><br class=""><div apple-content-edited="true" class=""><div class="" style="font-family: Arial, sans-serif; orphans: 2; widows: 2;"><span class="Apple-style-span" style="font-size: 9px;"><b class=""><span class="" style="font-size: 9pt;"><br class="Apple-interchange-newline">Dr Ross Moore</span></b></span></div><div class="" style="font-family: Arial, sans-serif; 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