[Haskell-cafe] Strange subtract operator behavior

[Peter Verswyvelen]

Duh, you're right... silly me. I always put spaces between the operator, 
but many people of course don't.

Isaac Dupree wrote:
> Peter Verswyvelen wrote:
>> Personally I could also live with allowing no space between the minus 
>> sign and the number... If you leave a space, - becomes the subtract 
>> operator.
>
> I once thought that... there was the opposition that (x-1) subtraction 
> of a constant appears too often.  And I found that I myself wrote that 
> several times.  And saying "whitespace on the left but not the right" 
> seems too complicated for Haskell lexer semantics.  So the current 
> situation is just unhappy, that's all. (and maybe compiler warnings 
> could still be implemented)
>
> Isaac
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