Argument-parsing helpers for C/Unix

Question

I know of the following:

• The venerable getopt(3)
• The extended getopt_long
• glibc\'s argp parser for Unix-style argum

Answer 1

As the saying goes, "standard is better than better". So I always use getopt_long() and anything that is non-GNOME/glibby, and the glib one on anything that does.

For the same reason I always use optparse in Python applications, even though it has a lot of missing features relative to getopt_long() ... but that's the Python standard.