3 printf '%s\n' '\a\ b c' | { read a b; printf '%s\n' "x${a}x${b}x"; }
4 printf '%s\n' '\a b\ c' | { read a b; printf '%s\n' "x${a}x${b}x"; }
5 printf '%s\n' '\a\:b:c' | { IFS=: read a b; printf '%s\n' "x${a}x${b}x"; }
6 printf '%s\n' '\a:b\:c' | { IFS=: read a b; printf '%s\n' "x${a}x${b}x"; }
7 printf '%s\n' '\\ a' | { read a b; printf '%s\n' "x${a}x${b}x"; }
8 printf '%s\n' '\\:a' | { IFS=: read a b; printf '%s\n' "x${a}x${b}x"; }
9 printf '%s\n' '\\\ a' | { read a b; printf '%s\n' "x${a}x${b}x"; }
10 printf '%s\n' '\\\:a' | { IFS=: read a b; printf '%s\n' "x${a}x${b}x"; }