safety check for MUTTJUMP_MODE

diff --git a/muttjump b/muttjump
index 3cba9b794eb392dcf64116128f9dff027e554840..e7b5cdb64cf6a7cb70658e5b881524391de85d17 100755 (executable)
--- a/muttjump
+++ b/muttjump
@@ -71,6 +71,14 @@ if ! type -p $MUTT >/dev/null ; then
     die "$MUTT is not in PATH, set MUTT variable"
 fi
 
     die "$MUTT is not in PATH, set MUTT variable"
 fi
 

+case $MUTTJUMP_MODE in
+    limit|search)
+        ;;
+    *)
+        die "variable MUTTJUMP_MODE must be set to \"limit\" or \"search\""
+        ;;
+esac
+

 # search for Message-ID in STDIN
 if type -p $FORMAIL >/dev/null ; then
     msgid=$($FORMAIL -c -z -x Message-ID | head -n1)
 # search for Message-ID in STDIN
 if type -p $FORMAIL >/dev/null ; then
     msgid=$($FORMAIL -c -z -x Message-ID | head -n1)