Re: latex to html or plain text without any latex construct

[Uwe Brauer <oub-YB6e1s5WF/He5aOfsHch1g@public.gmane.org>]

>>> "John" == John MACFARLANE <jgm-TVLZxgkOlNX2fBVCVOL8/A@public.gmane.org> writes:

   > With -t plain, pandoc will only emit tex math if it can't
   > "fake it with unicode."  (Of course, that will be the case
   > with the complicated equation you mention.)

   > If you want this to be simply removed, you can combine
   > -t plain with a filter that removes all Math elements.


Sorry, I just realized that I asked this some years ago and you proposed
the following solution

   >     -- stripmath.hs
   >     -- compile: ghc --make stripmath.hs
   >     -- run: pandoc input.txt -t json | ./stripmath | pandoc -f json -t plain 
where stripmath is

import Text.Pandoc
    
main = toJsonFilter stripmath
    where stripmath (Math _ _) = Str "FORMULA"
          stripmath x = x


I just tried that out with the old compiled stripmath
but I obtain
/home/oub/scripts/stripmath: error while loading shared libraries:
libgmp.so.3: cannot open shared object file: No such file or directory 


So I presume I have to recompile it again but this time I receive 

hc --make stripmath.hs
[1 of 1] Compiling Main             ( stripmath.hs, stripmath.o )

stripmath.hs:3:8:
    No instance for (ToJsonFilter (Inline -> Inline))
      arising from a use of `toJsonFilter'
    Possible fix:
      add an instance declaration for (ToJsonFilter (Inline -> Inline))
    In the expression: toJsonFilter stripmath
    In an equation for `main':
        main
          = toJsonFilter stripmath
          where
              stripmath (Math _ _) = Str "FORMULA"
              stripmath x = x


I don't know enough haskell to deal with this. Any help is appreciated.

Thanks

Uwe Brauer