make acked recipients check case-insensitive

diff --git a/.mutt/sendmail-checks.d/ack-recipients b/.mutt/sendmail-checks.d/ack-recipients
index 7edd1d55a9ef0f9d5477e18b5b1abb0f2ec73c07..f461462b6f4812506f2b6662e04ad209896c720a 100755 (executable)
--- a/.mutt/sendmail-checks.d/ack-recipients
+++ b/.mutt/sendmail-checks.d/ack-recipients
@@ -23,15 +23,16 @@ set -eu
 
 CHECKLIST="$HOME/.mutt/ack-recipients"
 HEADER=X-Acked
-ACKED_RCPTS=$(formail -czx ${HEADER}: < $1 | tr -d ',')
+ACKED_RCPTS=$(formail -czx ${HEADER}: < $1 | tr -d ',' | tr [[:upper:]] [[:lower:]])
 MAILFILE="$1"; shift
 
 ret=0
 for r in $@; do
   ack=0
   # check if this recipient is in the list of acked recipients
-  for a in $ACKED_RCPTS; do [ $a = $r ] && ack=1 && break; done
-  rs=$(printf $r | tr [[:upper:]] [[:lower:]] | sha256sum)
+  rl=$(printf $r | tr [[:upper:]] [[:lower:]])
+  for a in $ACKED_RCPTS; do [ $a = $rl ] && ack=1 && break; done
+  rs=$(printf $rl | sha256sum)
   # now check if this unacked recipient needs to be acked
   if [ $ack -eq 0 ] && grep -q "^${rs%% *}$" "$CHECKLIST"; then
     echo >&2 "E: will not send mail until $r has been added to the $HEADER header"