I found a problem in std.string.rfind when a single-character string is used, an "Error: ArrayBoundsError string(413)" is produced.  I know if I used a character literal the problem goes away, but I still think this is a hole that should be plugged.

I came up with a two-line fix for rfind(char[], char[]) in string.d that might be a good way to fix it:

	if (sub.length == 1)
		return rfind(s, sub[0]);


I'm sure there's another way to fix it, but this is the first one I found.

The file rfind_char.d shows the Phobos problem, and when it's compiled with "-version=fix", my fix is shown.

-- 
Justin
http://jcc_7.tripod.com/d/