Index: generic/predefined.h
===================================================================
diff -u -r35c0d6ecb3c83cc6d6b0dfe251ba1a0d9071dc30 -rfc77eaadabdd690239694a6f1cf155a7d16b5cd4
--- generic/predefined.h	(.../predefined.h)	(revision 35c0d6ecb3c83cc6d6b0dfe251ba1a0d9071dc30)
+++ generic/predefined.h	(.../predefined.h)	(revision fc77eaadabdd690239694a6f1cf155a7d16b5cd4)
@@ -78,6 +78,12 @@
 "return /tmp}\n"
 "namespace export tmpdir\n"
 "if {![info exists ::env(HOME)]} {set ::env(HOME) /root}\n"
+"proc ::nsf::parameter::filter {defs pattern} {\n"
+"set result {}\n"
+"foreach def $defs {\n"
+"if {[string match $pattern [::nsf::parameter::get name $def]]} {\n"
+"lappend result $def}}\n"
+"return $result}\n"
 "set ::nsf::parametersyntax(::nsf::xotclnext) \"?--noArgs? ?/arg .../?\"\n"
 "set ::nsf::parametersyntax(::nsf::__unset_unknown_args) \"\"\n"
 "set ::nsf::parametersyntax(::nsf::exithandler) \"?get?|?set /cmds/?|?unset?\"}\n"