In a sample GSP file: <div> <g:message code="general.text" /> <g:message code="general.text" /> <g:message code="general.text" /> </div> the produced result is <div> Hello WorldHello WorldHello World </div> instead of what I would expect: <div> Hello World Hello World Hello World </div> So the GSP engine removes the newlines. This causes problem when rendering plain text (in XML / HTML it generally does not matter). Tabs and spaces are not removed. If you put some newliens and then a space, the newlines wont even be removed - it appears the code removes all the new line characters next to a GSP tag, apparently. This is probably an easy fix although beware of regressions I guess maybe an option should be added to remove or not remove the newlines, but I cannot see a situation where removing them would be useful (although the contrary, always removing them, clearly is problematic).