On Wed, 7 Sep 2011, Thomas Friedrich wrote:

Hi,

I am having problems typing ">>" when typesetting code within a
\definetyping environment.

I hope someone might be able to give me a hint.  My code looks as
follows:

\definetyping
  [Haskell]
  [ option=commands,
    before={\startframedtext[width=\makeupwidth,
      frame=off,bottomframe=on,topframe=on,
      background=screen,backgroundscreen=.90]},
    after={\stopframedtext},
    bodyfont=9pt,
    margin=1.5em]

\startHaskell
main = foo >>= bar
\stopHaskell

Whenever ConTeXt comes across >> anywhere in the text, it just doesn't
typeset anything.  So in the above case, I get the output:

main = foo = bar

Confirmed. >> are eaten in MkII but everything works fine with MkIV. My guess is because of automatic ligatures for >>. My usual trick for disabling such ligatures in MkII is

    \usetypescript [modern] [texnansi]
    \setupbodyfont [modern]

but that does not work in this case. There were some discussions in the past about disabling ligatures in typewriter font, but I don't remember the exact solution.

Aditya
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