On 07/06/2012 02:37 PM, Akim Demaille wrote: > Le 6 juil. 2012 à 14:24, Jim Meyering a écrit : > >> warnf '%s\n' "Error: '$app' version == $inst_ver is too old" \ >> " '$app' version >= $req_ver is required" > > Don't you mean warnf '%s\n%s\n'? Or should warnf expect a single %s > in $1 and use $1 repeatedly on the remaining arguments? > I think POSIX mandates that printf(1) applies the format string to the arguments in a sort of loop:
$ printf '%s\n' a b c d a b c d $ printf '%s-%s\n' a b c d a-b c-d In fact, quoting from <http://pubs.opengroup.org/onlinepubs/9699919799/utilities/printf.html>: The format operand shall be reused as often as necessary to satisfy the argument operands. Any extra c or s conversion specifiers shall be evaluated as if a null string argument were supplied; other extra conversion specifications shall be evaluated as if a zero argument were supplied. If the format operand contains no conversion specifications and argument operands are present, the results are unspecified. Regards, Stefano
