Change the cmd-line output for warnings from foo.dart:line:col to foo.dart, line x, col y.

pkg/analyzer_experimental/lib/src/error_formatter.dart

 // Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 library error_formatter;
 
 import 'dart:async';
 import 'dart:io';
 
 import 'generated/java_io.dart';
@@ skipping 106 matching lines @@
       out.write(escapePipe(source.fullName));
       out.write('|');
       out.write(location.lineNumber);
       out.write('|');
       out.write(location.columnNumber);
       out.write('|');
       out.write(length);
       out.write('|');
       out.writeln(escapePipe(error.message));
     } else {
-      // [warning] 'foo' is not a method or function (/Users/devoncarew/temp/foo.dart:-1:-1)
-      out.write('[');
-      out.write(severity.displayName);
-      out.write('] ');
-      out.write(error.message);
-      out.write(' (');
-      out.write(source.fullName);
-      out.write(':');
-      out.write(location.lineNumber);
-      out.write(':');
-      out.write(location.columnNumber);
-      out.writeln(')');
+      // [warning] 'foo' is not a... (/Users/.../tmp/foo.dart, line 1, col 2)
+      out.write('[${severity.displayName}] ${error.message} ');
+      out.write('(${source.fullName}');
+      out.write(', line ${location.lineNumber}, col ${location.columnNumber})');
     }
   }
 
   static String escapePipe(String input) {
     var result = new StringBuffer();
     for (var c in input.codeUnits) {
       if (c == '\\' || c == '|') {
         result.write('\\');
       }
       result.writeCharCode(c);
     }
     return result.toString();
   }
 
   static String pluralize(String word, int count) {
     if (count == 1) {
       return word;
     } else {
       return word + "s";
     }
   }
 }