hello John and thanks for helping, On Fri, Feb 21, 2020 at 08:47:18PM +1100, John Gardner wrote: > Even without seeing the PDF output, I'd say you have one or more fonts > missing from your installation path. Do you have GhostScript installed?
$ aptitude search '~i ~n ghostscript' -F%p%v ghostscript9.27~dfsg-2+deb10u3 > Also, you can debug formatted output by calling groff with its -Z switch. > You should see something like this symbol font is here as i read $ grep -H . math.me && eqn -Tpdf math.me |groff -Z -k -Tpdf math.me:.EQ math.me:sqrt a over sqrt c math.me:.EN math.me:.\" 1 + x + x sup 2 over 2 + x sup 3 over { 2 * 3 } ; math.me:.\" a hat over c tilde ; bold a over bold c ; x T pdf x res 72000 1 1 x init x F - x F /usr/share/groff/1.22.4/tmac/eqnrc x F math.me p1 V18788 H72000 DFd x font 11 S f11 s10000 h1200 V13070 md Csqrt Cradicalex h590 Cradicalex x font 38 TI f38 h5230 V11788 ta f11 H73495 v15370 Csqrt Cradicalex f38 h5715 V25876 tc H73200 V16188 Dl 5000 0 H74280 Dl 5000 0 Dl 5000 0 h1200 v2600 n18788 5250 x trailer V792000 x stop > None that I know of, though it probably wouldn't be too difficult to smash > together a Perl script to preprocess TeX equations. I'd be interested in > knowing if any such preprocessor already exists, however. I found this: https://dlmf.nist.gov/LaTeXML/ which led me to this: https://github.com/brucemiller/LaTeXML/blob/master/lib/LaTeXML/MathGrammar i'll look at it later. regards marc