Whitespace issue in 2.5.0

I recently upgraded from Smarty 2.3.0 to 2.5.0 and discovered that none of my templates work correctly anymore. After a little poking, I discovered that the compiled output of the following template changed: {* $Id: header.tpl,v 1.21 2003/03/11 22:29:14 pzb Exp $ *} {assign var="pageid" value=$pageid|default:"unknown"} {HTTPHeader name="X-PageID" value="$pageid"} <?xml version="1.0" encoding="iso-8859-1"?> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en"> <head> <title>{$heading|default:"Foo Inc Program"}</title> <script language="JavaScript"> {literal} ..... The problem is that in 2.3.0 smarty gobbled up the new lines after the plugin calls, while in 2.5.0 it is leaving them in the code. This is causing problems for me because the HTTPHeader plugin call is supposed to put out a HTTP header, which can't happen after output has started. Interestingly, the newline after the comment, before the assign plugin call, is not being output. The attached patch removes the bare newlines, but I'm not sure if it will break things for other people. Thanks. Peter