Progress. I can now create and edit notes reliably.

src/includes/edit.sns.sh

@@ -4,7 +4,9 @@ if [ ! -r "$NOTE" ]; then
     exit 40;
 fi
 
-if [ "$ENCRYPTION" == "TRUE" ]; then decrypt
+if [ "$ENCRYPTION" == "TRUE" ]; then
+    cp "$NOTE" "$NOTE".bk
+    decrypt
 else TARGET="$NOTE"; fi
 
 
@@ -12,7 +14,11 @@ if [ -z "$CREATE" ]; then printf "\nEDIT %s" "$(date)" >> "$TARGET"; fi
 
 "$EDITOR" "$TARGET"
 
-if [ "$ENCRYPTION" == "TRUE" ]; then encrypt; fi
+if [ "$ENCRYPTION" == "TRUE" ]; then
+    rm "$NOTE"
+    encrypt;
+    if [ -r "$NOTE" ]; then rm "$NOTE".bk;  fi
+fi