Detect bad option files supplied via --options.

src/utils/safe-json-loader.coffee

@@ -17,7 +17,7 @@ module.exports = ( file ) ->
     # We'll return HMSTATUS.readError or HMSTATUS.parseError.
     retRaw = ret.raw && ret.raw.trim()
     ret.ex =
-      operation: if retRaw then 'parse' else 'read'
+      op: if retRaw then 'parse' else 'read'
       inner:
         if SyntaxErrorEx.is( _error )
         then (new SyntaxErrorEx( _error, retRaw ))

src/utils/syntax-error-ex.coffee

@@ -30,6 +30,7 @@ class SyntaxErrorEx
         @line = (/on line (\d+)/.exec _error)[1]
 
 
-
+# Return true if the supplied parameter is a JavaScript SyntaxError
 SyntaxErrorEx.is = ( ex ) -> ex instanceof SyntaxError
+
 module.exports = SyntaxErrorEx;