<html><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class="">The error has been traced to a “RTFM” cause: I failed to use the repeatindex package properly, by suitably modifying my .ist to satisfy repeatindex.<div class=""><br class=""></div><div class="">I also posted my question to tex.stackexchange (<a href="https://tex.stackexchange.com/questions/528504/indexing-error-mathit-allowed-only-in-math-mode" class="">https://tex.stackexchange.com/questions/528504/indexing-error-mathit-allowed-only-in-math-mode</a>), where Ulrike Fischer pointed me to the source of the error.</div><div class=""><br class=""></div><div class="">In a new post, <a href="https://tex.stackexchange.com/questions/528520/how-modify-custom-ist-to-incorporate-repeatindex" class="">https://tex.stackexchange.com/questions/528520/how-modify-custom-ist-to-incorporate-repeatindex</a>, I asked how to modify the .ist to satisfy repeatindex.</div><div class=""><br class=""></div><div class="">Here’s the crux of the problem, as indicated there…</div><div class=""><br class=""></div><div class="">My .ist is currently:</div><div class=""><br class=""></div><div class=""><div style="margin: 0px; font-stretch: normal; line-height: normal;" class=""><font face="Courier" class="">% MakeIndex style file</font></div><div style="margin: 0px; font-stretch: normal; line-height: normal;" class=""><font face="Courier" class="">% output main entry <entry> as: \item \idxmark{<entry>}, </font></div><div style="margin: 0px; font-stretch: normal; line-height: normal;" class=""><font face="Courier" class="">item_0 "\n\\item \\idxmark{"</font></div><div style="margin: 0px; font-stretch: normal; line-height: normal;" class=""><font face="Courier" class="">delim_0 "}, "</font></div><div style="margin: 0px; font-stretch: normal; line-height: normal;" class=""><font face="Courier" class="">% not forgetting the subitem case</font></div><div style="margin: 0px; font-stretch: normal; line-height: normal;" class=""><font face="Courier" class="">item_x1 "} \n \\subitem "</font></div><div style="margin: 0px; font-stretch: normal; line-height: normal;" class=""><font face="Courier" class="">headings_flag 1</font></div><div style="margin: 0px; font-stretch: normal; line-height: normal;" class=""><font face="Courier" class="">heading_prefix "{\\medskip\\hfill\\large\\textsf{\\textbf{"</font></div><div style="margin: 0px; font-stretch: normal; line-height: normal;" class=""><font face="Courier" class="">heading_suffix "}}\\hfill}\\medskip\\nopagebreak\n”</font></div><div style="margin: 0px; font-stretch: normal; font-size: 18px; line-height: normal;" class=""><br class=""></div><div style="margin: 0px; font-stretch: normal; font-size: 18px; line-height: normal;" class=""><span style="font-size: 14px;" class="">The command <font face="Courier" class="">\idxmark</font> used in the .ist is defined in my preamble by:</span></div><div style="margin: 0px; font-stretch: normal; font-size: 18px; line-height: normal;" class=""><span style="font-size: 14px;" class=""><br class=""></span></div><div style="margin: 0px; font-stretch: normal; line-height: normal;" class=""><div style="margin: 0px; font-stretch: normal; line-height: normal;" class=""><font face="Courier" class="">\newcommand{\idxmark}[1]{{\let\gobbleone\relax\markboth{\sffamily\bfseries#1}{\sffamily\bfseries#1}}#1}</font></div><div style="margin: 0px; font-stretch: normal; line-height: normal;" class=""><div style="margin: 0px; font-stretch: normal; line-height: normal;" class=""><font face="Courier" class="">\providecommand\gobbleone[1]{}</font></div><div style="font-size: 18px; margin: 0px; font-stretch: normal; line-height: normal;" class=""><br class=""></div><div style="font-size: 18px; margin: 0px; font-stretch: normal; line-height: normal;" class=""><span style="font-size: 14px;" class="">In order to use repeatindex property, index items need to be enclosed in square brackets, and this can be accomplished by invoking makeindex in the form...</span></div><div style="font-size: 18px; margin: 0px; font-stretch: normal; line-height: normal;" class=""><span style="font-size: 14px;" class=""><br class=""></span></div><div style="margin: 0px; font-stretch: normal; line-height: normal;" class=""><div style="margin: 0px; font-stretch: normal; line-height: normal;" class=""><span style="font-variant-ligatures: no-common-ligatures;" class=""><font face="Courier" class="">makeindex -s repeatindex file</font></span></div><div style="font-size: 12px; margin: 0px; font-stretch: normal; line-height: normal; font-family: Menlo;" class=""><span style="font-variant-ligatures: no-common-ligatures" class=""><br class=""></span></div><div style="margin: 0px; font-stretch: normal; line-height: normal;" class="">… where repeatindex.ist, supplied as part of the repeatindex package, is:</div><div style="margin: 0px; font-stretch: normal; line-height: normal;" class=""><br class=""></div><div style="margin: 0px; font-stretch: normal; line-height: normal;" class=""><div style="margin: 0px; font-stretch: normal; line-height: normal;" class=""><font face="Courier" class="">item_0 "\n \\item ["</font></div><div style="margin: 0px; font-stretch: normal; line-height: normal;" class=""><font face="Courier" class="">delim_0 "], “</font></div><div style="margin: 0px; font-stretch: normal; font-size: 18px; line-height: normal;" class=""><br class=""></div><div style="margin: 0px; font-stretch: normal; line-height: normal;" class="">—> So the remaining issue is how to reconcile my own .ist, which incorporates \idxmark, with what repeatindex wants in the way of square brackets, as repeatindex.ist accomplishes.</div><div style="margin: 0px; font-stretch: normal; line-height: normal;" class=""><br class=""></div><div style="margin: 0px; font-stretch: normal; line-height: normal;" class="">At <a href="https://tex.stackexchange.com/questions/528520/how-modify-custom-ist-to-incorporate-repeatindex" class="">https://tex.stackexchange.com/questions/528520/how-modify-custom-ist-to-incorporate-repeatindex</a> I’ve included a minimal working example to simulate the error and to use in testing a modified .ist.</div></div></div></div></div><div><br class=""><blockquote type="cite" class=""><div class="">On 10 Feb2020, at 7:24 PM, Herbert Schulz <<a href="mailto:herbs@wideopenwest.com" class="">herbs@wideopenwest.com</a>> wrote:</div><br class="Apple-interchange-newline"><div class=""><div class=""><br class=""><br class=""><blockquote type="cite" class="">On Feb 10, 2020, at 3:17 PM, Murray Eisenberg <<a href="mailto:murrayeisenberg@gmail.com" class="">murrayeisenberg@gmail.com</a>> wrote:<br class=""><br class="">Gladly…the log is attached — hope it’s not scrubbed..<br class=""><br class="">(I forgot you’re a bottom-replier, not a top-replier!)<br class=""><br class="">Murray<br class=""><topologybook.log><br class=""><br class=""><br class=""><br class=""></blockquote><br class="">Howdy,<br class=""><br class="">It appears that the problem is in the .ind file or a write to it not .idx. Also, take a look at the paragraph at lines 1681--1683 in the root file which seems to be close to where that error is being generated.<br class=""><br class="">Good Luck,<br class=""><br class="">Herb Schulz<br class="">(herbs at wideopenwest dot com)<br class=""><br class="">----------- Please Consult the Following Before Posting -----------<br class="">TeX FAQ: <a href="http://www.tex.ac.uk/faq" class="">http://www.tex.ac.uk/faq</a><br class="">List Reminders and Etiquette: <a href="https://sites.esm.psu.edu/~gray/tex/" class="">https://sites.esm.psu.edu/~gray/tex/</a><br class="">List Archives: <a href="http://dir.gmane.org/gmane.comp.tex.macosx" class="">http://dir.gmane.org/gmane.comp.tex.macosx</a><br class=""> <a href="https://email.esm.psu.edu/pipermail/macosx-tex/" class="">https://email.esm.psu.edu/pipermail/macosx-tex/</a><br class="">TeX on Mac OS X Website: <a href="http://mactex-wiki.tug.org/" class="">http://mactex-wiki.tug.org/</a><br class="">List Info: <a href="https://email.esm.psu.edu/mailman/listinfo/macosx-tex" class="">https://email.esm.psu.edu/mailman/listinfo/macosx-tex</a><br class=""></div></div></blockquote></div><br class=""><div class="">
---<br class="">Murray Eisenberg<span class="Apple-tab-span" style="white-space: pre;"> </span><a href="mailto:murrayeisenberg@gmail.com" class="">murrayeisenberg@gmail.com</a><br class="">503 King Farm Blvd #101<span class="Apple-tab-span" style="white-space: pre;"> </span>Home (240)-246-7240<br class="">Rockville, MD 20850-6667<span class="Apple-tab-span" style="white-space: pre;"> </span>Mobile (413)-427-5334<br class=""><br class="">
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