(eshell-parse-argument-hook): If a number is encountered as an

(eshell-parse-argument-hook): If a number is encountered as an
argument, don't convert it right away, but tag the first character of
the string with the text properties `number', which signifies to
`eshell-lisp-command' that the argument should be passed through
`string-to-number' if it is actually used in the call to a Lisp
function.