Zack Weinberg wrote: > > According to POSIX they shouldn't ignore the value in the > > environment. At least ash seems to get this right: > > My reading of the XPG/4 page is that shells are allowed to honor or > ignore it as they see fit. Therefore, this is a case where my > proposal triggers. Ash honors the value in the environment, but bash, > pdksh, AT&T ksh, and /bin/sh from three different proprietary Unix > clones all ignore it. Therefore, under my proposal, ash is buggy. > > If POSIX says explicitly that it must be honored, that's news to me.
Hmm... As I read page 123 (Shell Command Language, Variables) shells can't ignore the value in the environment: "Variables shall be initialized from the environment ..." "The following variables shall affect the execution of the shell:" "IFS ..." However at page 416-417 (sh, Environment Variables) they can: "The following environment variables shall affect the execution of sh:" "IFS ... Implementations may ignore the value of IFS in the environment at the time sh is invoked, treating IFS as if it were not set." I asked about this on the [EMAIL PROTECTED] mailing list, but didn't got any answer. -- Patrik Hägglund
