unset
declare -x ivar="42"
hB
-braceexpand:hashall
+braceexpand:hashall:interactive-comments
hPB
-braceexpand:hashall:physical
-declare -r SHELLOPTS="braceexpand:hashall:physical"
+braceexpand:hashall:physical:interactive-comments
+declare -r SHELLOPTS="braceexpand:hashall:physical:interactive-comments"
abcde
+20
+30
+40
+50