Reading dchar from UTF-8 stdin

[Ali Çehreli]

On 03/16/2011 02:52 AM, spir wrote:
 > On 03/15/2011 11:33 PM, Ali Çehreli wrote:

 >> Given that the input stream is UTF-8

[...]

 >> Would you expect all of the bytes to be consumed when a dchar was used
 >> instead?
 >>
 >> import std.stdio;
 >>
 >> void main()
 >> {
 >> dchar code; // <-- now a dchar
 >> readf(" %s", &code);
 >> writeln(code); // <-- BUG: uses a code unit as a code point!
 >> }
 >
 > Well, when I try to run that bit of code, I get an error in std.format.
 > formattedRead (line near the end, marked with "***" below).

I use dmd 2.052 on an Ubuntu 10.10 console and compiles fine for me. I 
know that there has been changes in formatted input and output lately. 
Perhaps you use an earlier version?

 > *args[0] = unformatValue!(A)(r, spec); // ***

 >> When the input is ö, now the output becomes Ã.
 >>
 >> What would you expect to happen?
 >
 > I would expect a whole code representing 'ö'.

I agree; just opened a bug report:

   http://d.puremagic.com/issues/show_bug.cgi?id=5743

Ali