comments about other registerSourceHandler calls

packages/stylus/plugin/compile-stylus.js

@@ -4,6 +4,9 @@ var nib = Npm.require('nib');
 var path = Npm.require('path');
 var Future = Npm.require('fibers/future');
 
+// XXX BBP probably rewrite to registerCompiler even if we can't implement
+// good @imports because stylus doesn't let you override @import processing.
+// (maybe deprecate this package?  put out a call for PRs?)
 Plugin.registerSourceHandler("styl", {archMatching: 'web'}, function (compileStep) {
   var f = new Future;
   stylus(compileStep.read().toString('utf8'))

packages/templating/plugin/compile-templates.js

@@ -43,6 +43,7 @@ var doHTMLScanning = function (compileStep, htmlScanner) {
   }
 };
 
+// XXX BBP rewrite to registerCompiler
 Plugin.registerSourceHandler(
   "html", {isTemplate: true, archMatching: 'web'},
   function (compileStep) {