Hi Marc,
> I try to get a correct rendering for this simple eqn
>
> .EQ
> sqrt a over sqrt c
> .EN
With groff 1.22.4-1 and ghostscript 9.27-1 on Arch Linux, I ran
printf '%s\n' .EQ 'sqrt a over sqrt c' .EN |
groff -Tpdf -e >eq.pdf
printf '%s\n' .EQ 'sqrt a over sqrt c' .EN |
groff -Tps -e >eq.ps
ps2pdf eq.ps eq.ps.pdf
All three outputs looks similar and correct. (I do notice the bar above
the c ends before the bar over the a.)
> first i tried
>
> eqn -Tpdf|groff -Tpdf
>
> and noticed that the begin of the square root symbol is replaced by a
> rectangle that goes down to the bottom of the symbol.
Sounds like a PDF font problem.
> also i tried
>
> eqn |groff ; ps2pdf14
>
> the ps rendering is fine but the pdf one got the same issue.
Again, PDF font.
Passing -Z to groff has it print the ditroff instead of using the given
typesetting backend.
printf '%s\n' .EQ 'sqrt a over sqrt c' .EN |
groff -Tpdf -eZ
I see, adding line numbers,
4 x F /usr/share/groff/1.22.4/tmac/eqnrc
10 x font 11 S
16 Csqrt
17 Cradicalex
19 Cradicalex
20 x font 38 TI
24 ta
28 Csqrt
29 Cradicalex
33 tc
Their definitions here in -Tpdf's S font.
$ egrep 'sqrt|radicalex' /usr/share/groff/1.22.4/font/devpdf/S
radicalex 500,917,0,590 3 96 radicalex
sqrt 549,917,38 3 214 radical
$
What OS and distro are you on? groff version? Is your document more
complex and you're altering the font?
(Please reply to the list.)
--
Cheers, Ralph.
