Hi all,

To corroborate Wadler's law further.

:-)

Josef wrote:

> Oh yes, it does happen that a single line comment begins with a
> special symbol. It has happened to me on several occations when using
> haddock annotation to my source code. It is all to easy to forget that
> extra space. With incomprehensible error messages as a result.

But might that not just mean that the error messages ought to be
improved?

I don't know how hard that would be, but after having played around
a bit with GHC, the messages I get are either of the type
"parse error on input '--|'" or of the type "Not in scope: `-->'"
(followed by lots of other stuff not being in scope etc).

If this really is a big problem for beginners, it would not seem
totally infeasible to add some special code that helpfully suggests
that a space perhaps ought to be inserted?

Or have you seen significantly worse error messages?

My point here was not that the error messages was that terrible. I just wanted to point out to Manuel that it does happen that single line comments start with a symbol. Which makes the current comment syntax somewhat awkward.

Cheers,

/Josef