+proc nickdb_get_username {n} {
+ if {![nickdb_exists $n]} { return "" }
+ return [nickdb_get $n username]
+}
+
+proc nickdb_get_sec_effective {n} {
+ set l [nickdb_get $n tellsec]
+ set u [nickdb_get_username $n]
+ if {"[lindex $l 0]" == "secure" && ![string length $u]} { set l insecure }
+ return $l
+}
+
+proc tell_peernicks {text} {
+ set text [irctolower [string trim $text]]
+ set senders [split $text " "]
+ foreach sender $senders {
+ if {[catch { check_nick $sender } emsg]} {
+ error "invalid sender nick `$sender': $emsg" $errorInfo $errorCode
+ }
+ }
+ return $senders
+}
+
+proc msgsdb_set_maydelete {n key l otherkey} {
+ msgsdb_set $n $key $l
+ if {[llength $l]} return
+ if {[llength [msgsdb_get $n $otherkey]]} return
+ msgsdb_delete $n
+}
+
+proc tell_delete_msgs {lsenders lrecip} {
+ set ninbound {}
+ set ndel 0
+ foreach {s t m} [msgsdb_get $recip inbound] {
+ if {[llength $senders]} {
+ if {[lsearch -exact $senders [irctolower $s]] == -1} {
+ lappend ninbound $s $t $m
+ continue
+ }
+ }
+ set rsenders($s) 1
+ incr ndel
+ }
+ msgsdb_set_maydelete $recip inbound $ninbound outbound
+ if {![llength $ninbound]} {
+ upvar #0 nick_telling($lrecip) telling
+ catch { unset telling }
+ }
+ foreach s [array names rsenders] {
+ set noutbound {}
+ foreach {r t c} [msgsdb_get $s outbound] {
+ if {"[irctolower $r]" == "$lrecip"} continue
+ lappend noutbound $r $t $c
+ }
+ msgsdb_set_maydelete $s outbound $noutbound inbound
+ }
+ return $ndel
+}
+
+def_ucmd untell {
+ prefix_nick
+ check_notonchan
+ nick_securitycheck 0
+ set recipients [tell_peernicks $text]
+ if {![llength $recipients]} {
+ usererror "You must say which recipients' messages from you to forget."
+ }
+ set ndel 0
+ foreach recip $recipients {
+ incr ndel [tell_delete_msgs [irctolower $n] $recip]
+ }
+ ucmdr "Removed $ndel as yet undelivered message(s)." {}
+}
+
+def_ucmd delmsg {
+ global errorInfo errorCode
+ prefix_nick
+ set nl [irctolower $n]
+ check_notonchan
+ manyset [nickdb_get_sec_effective $n] sec secwhen
+ switch -exact $sec {
+ insecure { }
+ refuse - mailto {
+ usererror \
+ "There are no messages to delete\
+ because your message disposition prevents them from being left."
+ }
+ secure {
+ nick_securitycheck 1
+ }
+ default {
+ error "delmsg sec $sec"
+ }
+ }
+ tell_getcstate
+ if {"$stt" != "passed"} {
+ usererror \
+ "There are message(s) you've not yet seen; I'll deliver them to you now.\
+ If you actually want to delete them, just tell me `delmsg' again."
+ }
+ set senders [tell_peernicks $text]
+ set ndel [tell_delete_msgs [irctolower $senders] [irctolower $n]]
+ if {!$ndel} {
+ if {[llength $senders]} {
+ ucmdr "No relevant incoming messages to delete." {}
+ } else {
+ ucmdr "No incoming messages to delete." {}
+ }
+ }
+ switch -exact [llength $senders] {
+ 0 { ucmdr {} {} "deletes your $ndel message(s)." }
+ 1 { ucmdr {} {} "deletes your $ndel message(s) from $senders." }
+ default {
+ ucmdr {} {} "deletes your $ndel message(s) from\
+ [lreplace $senders end end] and [lindex $senders end]."
+ }
+ }
+}
+