[PATCH 2/3] posix: execvpe cleanup

[Paul Eggert]

Adhemerval Zanella wrote:
> according to POSIX [1], "argv[0] should point to a filename string that
> is associated with the process being started by one of the exec functions"

Sure, but in this context the word "should" is talking about (as POSIX puts it) 
"a feature or behavior that is recommended programming practice for optimum 
portability."  A conforming application is not required to follow the 
recommendation, and in order to conform to POSIX glibc must support applications 
that do not follow the recommendation but otherwise conform.

My source for the above quote:

http://pubs.opengroup.org/onlinepubs/9699919799/basedefs/V1_chap01.html#tag_01_05_06