Can follow that fast, the n-1 version gives
gimme_num( ) { local y o m='[0-9,.]' s=$'\n' i t ; t="(-?$m+)" ; unset -v o
; for n ; do unset -v i ; while [[ $n =~ $t ]] ; do y=${BASH_REMATCH[1]}
n=${n/"$y"} i= o+=$y$s ; done ; [[ -v i ]] && o+=$s ; done ; [[ -v o ]] &&
printf %s "$o" ; }
$ gimme_num 0x10 60#yo 0x10
0
10
60
0
10
That can be streamlined as
$ gimme_num2()
{ printf '%d\n' ${@//[^0-9]/ }
}
$ gimme_num2 0x10 60#yo 0x10
0
10
60
0
10
The last version gives
$ gimme_num( ) { local y o m='[0-9,.]' s=$'\n' i t ; t="(-?$m+)" ; unset -v
o ; for n ; do i= ; if [[ $n =~ $t ]] ; then while [[ -v BASH_REMATCH[++i]
]] ; do o+=${BASH_REMATCH[i]}$s ; done ; fi ; [[ $i != 1 ]] && o+=$s ; done
; [[ -v o ]] && printf %s "$o" ; }
$ gimme_num 0x10 60#yo 0x10
0
60
0
Dunno what use case I could do with that
