Give up on use of huge_word for comments. Still not formatting quite right, but closer.

Author: graydon

src/comp/pretty/pprust.rs

@@ -1185,32 +1185,25 @@ fn print_remaining_comments(&ps s) {
 
 fn print_comment(&ps s, lexer::cmnt cmnt) {
     alt (cmnt.style) {
-        case (lexer::isolated) {
-            hardbreak(s.s);
-            for (str line in cmnt.lines) {
-                huge_word(s.s, line);
-                zerobreak(s.s);
-            }
+        case (lexer::mixed) {
+            assert vec::len(cmnt.lines) == 1u;
+            zerobreak(s.s);
+            word(s.s, cmnt.lines.(0));
+            zerobreak(s.s);
         }
-        case (lexer::trailing) {
+        case (_) {
             if (vec::len(cmnt.lines) == 1u) {
                 word(s.s, cmnt.lines.(0));
                 hardbreak(s.s);
             } else {
-                cbox(s.s, 0u);
+                ibox(s.s, 0u);
                 for (str line in cmnt.lines) {
-                    huge_word(s.s, line);
-                    zerobreak(s.s);
+                    word(s.s, line);
+                    hardbreak(s.s);
                 }
                 end(s.s);
             }
         }
-        case (lexer::mixed) {
-            assert vec::len(cmnt.lines) == 1u;
-            zerobreak(s.s);
-            word(s.s, cmnt.lines.(0));
-            zerobreak(s.s);
-        }
     }
 }
 //