[Haskell-cafe] Pretty-printing peg solitaire boards

[Stefan O'Rear]

On Sun, Nov 25, 2007 at 03:40:26AM -0200, Maurí­cio wrote:
> Hi,
>
> I'm trying to pretty-print (with Text
> . PrettyPrint . HughesPJ) a set of peg solitaire
> boards. No matter what I try, I always get this:
>
>   00#
>   00#
> 0000#00
> 0000000
> 0000000
>   000
>   000   :   00#
>             00#
>           0000000
>           0000000
>           0000000
>             000
>             000
>
> but what I really want is this:
>
>   00#       00#
>   00#       00#
> 0000#00   0000000
> 0000000 : 0000000
> 0000000     000
>   000       000
>   000       000
>
> What I'm I doing wrong? When I have two boards
> a,b::Doc, I'm composing them with
>
> a <+> colon <+> b
>
> and rendering them with just 'render'. Should I
> try something else?

Right; Text.PrettyPrint is designed for rendering code, where there is a
natural 1D structure.  For instance, stmt <> semi does the right thing
for code - sticking the semicolon at the very end.  For text graphics
you want to do something else...

Stefan
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