How to properly handle position non-specific program arguments? ./my_prog --format:"mp3"

• getopt

  7 97 0.0 C

  POSIX getopt() as a portable header library (by skeeto)

On unix-like systems there's a getopt function for parsing short options. Mingw-w64 has one as well, to cover Windows programs. If I care about portability, I just embed my own so it not only works everywhere, it behave the same everywhere, too.

• optparse

  5 314 0.0 C

  Portable, reentrant, getopt-like option parser

getopt_long is a GNU extension, common across unix-like systems, for parsing long options. You can find libraries for functionality as well.

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