# is significant because it can be sh-bang line or pre-processor. The only way I can think of is:
alias lhspp="sed 's/^#//'" ghc --make -F -pgmF lhspp File.lhs On Sat, Nov 29, 2008 at 10:07 PM, John MacFarlane <[EMAIL PROTECTED]> wrote: > Can anyone explain why ghc does not treat the following > as a valid literate haskell program? > > --------- test.lhs ---- > # This is a test > >> foo = reverse . words > > ------------------------ > > When I try to load this in ghci (or compile it using ghc), > I get: > > test.lhs:1:2: lexical error at character 'T' > > It seems that the problem is the '#' character in the first > column. Replacing it with something else, or moving it to > the right one space, solves the problem. > > The following literate haskell program, from > http://notvincenz.blogspot.com/2008/01/literate-haskell-and-c.html, > also fails to load for me, for the same reason (the leading > '#' in line 8). > > ---- literate-haskell-and-c.lhs --- > /* c and lhs file > >> >> module Foo where >> main = print "Haskell" >> > > */ > #include > > int main() { > printf("C\n"); > return 0; > } > ------------------------------------ > > I've reproduced this with ghc 6.10.1 and ghc 6.8.3 (linux binaries > from haskell.org) and with ghc 6.8.2 (Ubuntu intrepid). > Interestingly, hugs (September 2006 version) has no trouble with > test.lhs. I haven't tried ghc 6.6. > > I care about this because I'd like to use markdown conventions > to format the comment parts of literate haskell programs. Markdown > supports atx-style headers, which begin with strings of '#' > characters starting in the first column. I know that some people use > markdown with literate haskell, so there must be something basic here > that I'm missing! > > John > > _______________________________________________ > Haskell-Cafe mailing list > Haskell-Cafe@haskell.org > http://www.haskell.org/mailman/listinfo/haskell-cafe > _______________________________________________ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe