Re: Under win32 with xulrunner with addon-sdk, there is weird printf, how to avoid this.

You mean the ASCII escape sequences? You can find and disable them by editing the console.js file in the build template: https://github.com/mikedeboer/chromeless2/blob/master/lib/build/templates/xulrunner.template/components/console.js

Under win32 with xulrunner with addon-sdk, there is weird printf, how to avoid this.

1414221086902 addons.manager DEBUG Loaded provider scope for resource://gre/modules/addons/XPIProvider.jsm: ["XPIProvider"] 1414221086908 addons.manager DEBUG Loaded provider scope for resource://gre/modules/LightweightThemeManager.jsm: ["LightweightThemeManager"] 1414221086915 addons