Feature request

[Budi]

Need feature on while's readily flag

$ i=;while ((i<5)) ;do let i++ ;echo $i ;done ;echo $?
1
2
3
4
5
0

$ i=7;while ((i<5)) ;do let i++ ;echo $i ;done ;echo $?
0

we need feature on while's ability to supply flag when it's up to the
end of loop block
Please fulfill this, it's really needed
Thanks much before.