Hi Chet, I am not sure why this happens, but I can confirm it happens. I am sure the Index package used to work last year, so this seems like a regression. Try to put the attached version of index.4ht to the directory with your document. If it works, I will fix also TeX4ht sources, so it get to TeX Live.
Also, to actually get the index, you will need a make4ht build file that calls makeindex or xindex. See https://www.kodymirus.cz/tex4ht-doc/Howto.html#indexing The attached build file uses xindex. It seems to work, if I add \printindex to the document, Best regards, Michal On Mon, Feb 24, 2025 at 11:03 PM Chet Murthy <murthy.c...@gmail.com> wrote: > It seems I've encountered a problem using tex4ebook with the latest > version of Texlive. I installed it this AM, and here is the version > information (Googling turned this up, but if this isn't the right > version info, please let me know and I'll send better info (and make a note > of it)). > > The first file (mwe.tex) produces a "TeX capacity exceeded, sorry [input > stack size=10000]." error. > > If I remove a single line (to yield mwe2.tex), I get lots of syntax > errors, none of which are produced by lualatex. > > ==== > Files attached: > > config.cfg: tex4ebook config, obtained from Michal > mwe.tex: MWE for the problem > mwe2.tex: MWE for the second problem > ==== > Version info: > > $ htlatex --version > This is pdfTeX, Version 3.141592653-2.6-1.40.27 (TeX Live 2025) (preloaded > format=latex) > > tex --version > TeX 3.141592653 (TeX Live 2025) > ==== > Synopsis: It looks like a bad interaction between htlatex, urls, and > indexes. I'm sorry I was unable to get this MWE any smaller, but literally > removing any element that was left made it go thru OK. Also, the main > error happened regardless of whether I ran: > > $ tex4ebook -c config.cfg working.tex > > or > > $ tex4ebook working.tex > > But I got errors from config.cfg (also attached) with the first command. > > ==== > Error output: > > tex4ebook -c config.cfg working.tex > [STATUS] tex4ebook: Conversion started > [STATUS] tex4ebook: Input file: working.tex > [ERROR] htlatex: Compilation errors in the htlatex run > [ERROR] htlatex: Filename Line Message > [ERROR] htlatex: ./config.cfg ? LaTeX Error: Command > \printprogram undefined in `config.cfg'. > [STATUS] htlatex: <- Type H <return> for immediate help. ... > > [ERROR] htlatex: ./config.cfg ? LaTeX Error: Missing > \begin{document} in `config.cfg'. > [STATUS] htlatex: <- Type H <return> for immediate help. ... > > [ERROR] htlatex: ./config.cfg ? Undefined control > sequence. > [STATUS] htlatex: <- "> l.17 {\start:LstLn \HCode{<span > class="label">}}% The control sequence at the end of the top line > [ERROR] htlatex: ? ? Argument of \idx:extI has an extra }. > [STATUS] htlatex: <- \par l.16 ...package manager, > \texttt{opam}\index{opam} . I've run across a `}' that doesn't seem to > match anything. > [ERROR] htlatex: ? ? Paragraph ended before \idx:extI was > complete. > [STATUS] htlatex: <- \par l.16 ...package manager, > \texttt{opam}\index{opam} . I suspect you've forgotten a `}', causing me to > apply this > [ERROR] htlatex: ? ? TeX capacity exceeded, sorry [input stack > size=10000]. > [STATUS] htlatex: <- {\@par } l.16 ...package manager, > \texttt{opam}\index{opam} . If you really absolutely need more capacity, > [FATAL] make4ht-lib: Fatal error. Command htlatex returned exit code 1 > >
index.4ht
Description: Binary data
Make:htlatex {}
Make:xindex {}
Make:htlatex {}
