Index: library/lib/pp.tcl
===================================================================
diff -u -r9772d67ab302d9bfd3e300a35467ada054f85748 -r6fe7208cd9d9a64258121bb144d2e1e94ca85d1c
--- library/lib/pp.tcl	(.../pp.tcl)	(revision 9772d67ab302d9bfd3e300a35467ada054f85748)
+++ library/lib/pp.tcl	(.../pp.tcl)	(revision 6fe7208cd9d9a64258121bb144d2e1e94ca85d1c)
@@ -214,7 +214,7 @@
     :puts ".nx-placeholder {color: #AF663F; font-weight: normal; font-style: italic;}"
     :puts ".nx-variable    {color: #AF663F; font-weight: normal; font-style: normal;}"
     :puts "</style>"
-    :puts "<pre class='nx'>"
+    :puts -nonewline "<pre class='nx'>"
     :toHTML $block
     :puts "</pre>\n"
     return ${:output}