From: Brian Candler <B.Candler@...>
Date: 2004-10-09T18:11:15+09:00
Subject: Re: quality of error messages

On Sat, Oct 09, 2004 at 04:37:23AM +0900, Markus wrote:
>      So, in summary, I suspect that I would be happy with this rule but
> almost everyone else would be happier with the modified (< vs. <=)
> version I suggested earlier on this thread, which would allow:
> 
>       starting thing
>            guts
>            intestines
>            gizzards
>       end 
> 
> instead of the salient form:
> 
> 
>       starting thing
>            guts
>            intestines
>            gizzards
>            end 
> 
> which would be expected by the rule as stated.

Yeah, I know. That was something I glossed over, because I didn't want to
think it through :-)

I think that: if a line begins with 'end', then you process it (reduce the
nesting level) *before* checking whether the line's indentation level
matches what you expect. And if there's more than one, I suppose you have to
process them all, in case anyone writes something silly like

   class Foo; def bar; begin
         puts "hello"
   end; end; end

Another construct which may cause difficulty is

case foo
when /bar/
  ...
else
  ...
end

since I've seen other ways of laying this out.

Regards,

Brian.