test "$CONFIG_FEATURE_FANCY_ECHO" = "y" || exit 77

TEST=Q
# \` is special
echo `echo '\'TEST\`echo ZZ\`BEST`
# \$ and \\ are special
echo `echo \\$TEST`
echo `echo \$TEST`
echo a`echo \\\\b`c

# \" is not special if in unquoted `cmd` (passed verbatim WITH \),
# but is special in quoted one
echo `echo 11'-$a-\t-\\-\"-\`-\--\z-\*-\?-'22` "`echo 33'-$a-\t-\\-\"-\`-\--\z-\*-\?-'44`"
echo done:$?