+proc listrefs {id} {
+ global idtags idheads idotherrefs
+
+ set x {}
+ if {[info exists idtags($id)]} {
+ set x $idtags($id)
+ }
+ set y {}
+ if {[info exists idheads($id)]} {
+ set y $idheads($id)
+ }
+ set z {}
+ if {[info exists idotherrefs($id)]} {
+ set z $idotherrefs($id)
+ }
+ return [list $x $y $z]
+}
+
+proc rereadrefs {} {
+ global idtags idheads idotherrefs
+ global tagids headids otherrefids
+
+ set refids [concat [array names idtags] \
+ [array names idheads] [array names idotherrefs]]
+ foreach id $refids {
+ if {![info exists ref($id)]} {
+ set ref($id) [listrefs $id]
+ }
+ }
+ foreach v {tagids idtags headids idheads otherrefids idotherrefs} {
+ catch {unset $v}
+ }
+ readrefs
+ set refids [lsort -unique [concat $refids [array names idtags] \
+ [array names idheads] [array names idotherrefs]]]
+ foreach id $refids {
+ set v [listrefs $id]
+ if {![info exists ref($id)] || $ref($id) != $v} {
+ redrawtags $id
+ }
+ }
+}
+
+proc showtag {tag isnew} {
+ global ctext cflist tagcontents tagids linknum
+
+ if {$isnew} {
+ addtohistory [list showtag $tag 0]
+ }
+ $ctext conf -state normal
+ $ctext delete 0.0 end
+ set linknum 0
+ if {[info exists tagcontents($tag)]} {
+ set text $tagcontents($tag)
+ } else {
+ set text "Tag: $tag\nId: $tagids($tag)"
+ }
+ appendwithlinks $text
+ $ctext conf -state disabled
+ $cflist delete 0 end
+}
+