is it normal that set -x unset commands dont display special chars in the content

but they get unset right, just doesnt display em i have stuff with $'\34' separator and in set -x output the text is just flat for the unset + unset 'dat[kwmetest]' 'dat[1kw1]' 'dat[1take]' 'dat[1code]' code includes minuskws_p1=$nspace$SUBSEP$minuskws_id$SUBSEP \ minuskws_p2=$nspace${SUBSEP}kw

is there a way to autocomplete ( the show vars matching to str ) for assoc keys ?

say i have assoc[ ] i want to ${!assoc[begin*]}