[Haskell-cafe] Re: lhs2TeX \eval{} problem

2 Mar 2010

      Hi.
...
I'm having a problem with lhs2Tex and \eval{}. It doesn't work.
I have the following in a file test.lhs:
--------------------------------
%include polycode.fmt
One
%option ghci
Two
\eval{4}
Three
--------------------------------
When I try to run this file through lhs2Tex, it crashes:
...
lhs2Tex test.lhs
... polycode junk removed ...
One
%option ghci
Two
lhs2TeX: fd:7: hGetLine: end of file
--------------------------------
Has someone encountered this problem before, or knows how to solve this?
Two issues:

First, it's

%options ghci

and not

%option ghci

Second, the \eval is executed in the context of the current file,
i.e., the source must be a valid literate Haskell file. An empty
literate file causes the literate preprocessor to fail. This
works for me:

--------------------------------
%include polycode.fmt

One
%options ghci
Two
\eval{4}
Three
...
x = 0

HTH,
  Andres

-- 

Andres Loeh, Universiteit Utrecht

mailto:andres@cs.uu.nl     mailto:mail@andres-loeh.de
http://www.andres-loeh.de