Index: openacs-4/packages/xowiki/tcl/link-procs.tcl
===================================================================
RCS file: /usr/local/cvsroot/openacs-4/packages/xowiki/tcl/link-procs.tcl,v
diff -u -r1.86 -r1.87
--- openacs-4/packages/xowiki/tcl/link-procs.tcl	18 Mar 2012 16:10:45 -0000	1.86
+++ openacs-4/packages/xowiki/tcl/link-procs.tcl	22 Mar 2012 10:42:55 -0000	1.87
@@ -305,6 +305,7 @@
     }
     if {[my exists extra_query_parameter]} {
       set internal_href [export_vars -base $internal_href [my extra_query_parameter]]
+      set internal_href [string map [list ' "'"] $internal_href]
       if {[my exists revision_id]} {append href &revision_id=[my revision_id]}
     } else {
       if {[my exists revision_id]} {append internal_href ?revision_id=[my revision_id]}