きゅうり演算子できたよ！

(::) (::) (::) (::) (::) (::) (::)
きゅうり演算子できた
(::) (::) (::) (::) (::) (::) (::)

#!./ruby1.9

ary = [ 5, 4, 8, 1, 3, 2, ]
hoge = ary.sort! {|a, b| b (::) a }
p hoge
#=> [8, 5, 4, 3, 2, 1]

(::) < べんり！

Index: parse.y
===================================================================
--- parse.y     (リビジョン 25615)
+++ parse.y     (作業コピー)
@@ -7216,8 +7216,25 @@
        return '~';

       case '(':
-       if (IS_BEG()) {
-           c = tLPAREN;
+        // (::) == <=>
+        {
+          unsigned char d;
+          if ((d = nextc()) == ':') {
+            unsigned char e;
+            if ((e = nextc()) == ':') {
+              unsigned char b;
+              if ((b = nextc()) == ')') {
+                  return tCMP;
+              }
+              pushback(b);
+            }
+            pushback(e);
+          }
+          pushback(d);
+        }
+        ///////
+        if (IS_BEG()) {
+            c = tLPAREN;
        }
        else if (space_seen) {
            if (IS_ARG()) {