<p dir="ltr">I think we can all agree these characters should be shown. Maybe a GHC bug report is a good idea?</p>
<div class="gmail_quot<blockquote class=" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">On 02/03/2016 10:37 AM, Takayuki Muranushi wrote:<br>
> I think one of the solution is to import and call u_iswprint from<br>
> GHC.Show, too,<br>
> but I don't know it's against any design choices.<br>
<br>
+1 for only escaping non-printable characters.<br>
<br>
> Yesterday, I had a chance to teach Haskell (in Japanese,) and I had to<br>
> use English in some of the most exciting examples, like the<br>
> Applicative List example above. I would heartedly like to see GHC<br>
> improve in these directions, so that we can make more happy learning<br>
> materials on Haskell.<br>
<br>
As a workaround, perhaps you can avoid using print/show with core data<br>
structures. Using your applicative example:<br>
<br>
> mapM_ putStrLn $ [(++"の父"), (++"の母")] <*> ["田中", "山田"]<br>
田中の父<br>
山田の父<br>
田中の母<br>
山田の母<br>
<br>
For other data structures, you can write your own Show instance:<br>
<br>
data Name = Name String String<br>
<br>
instance Show Name where<br>
show (Name family given) = family ++ given<br>
<br>
> print $ Person "山田" "太郎"<br>
山田太郎<br>
<br>
Travis<br>
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