Solaris 11 compatibility

[agkozak]

z requires a version of awk that has the -v option. Solaris 11 uses by default an antiquated version of awk that does not have that option. Its nawk does have -v, however. I propose adding the function

awk() {
    case $(uname -a) in
       SunOS*) nawk "$@" ;;
       *) command awk "$@" ;;
    esac
}

It simply redirects calls on awk to nawk on Solaris and should have no effect on other systems. I have tested it with both bash and zsh.

[agkozak]

An even better idea: only run uname once, when the script is sourced, and only define the awk() function on Solaris:

case $(uname -a) in
  SunOS*) awk() { nawk "$@"; } ;;
esac

[agkozak]

fasd's method seems even better: pick an available version of awk that supports the -v option, assign it to $_Z_AWK, and use that instead of calling on awk.

[agkozak]

Solaris sed lacks the -i option, so the z -x command won't work. We have to use a temporary file.

[rupa]

i kinda suck at github flow - could you squash these commits so I can get a better look at them?

[agkozak]

@rupa Done!

[dmd]

This additional complexity seems iffy considering the userbase of Solaris 11.

[agkozak]

I think it would be a shame to give up on POSIX compliance (sed -i isn't in the standard) and having the script work on a genuine Unix distribution (whose default awk might be old enough not to have awk -v -- but another version of awk, such as nawk, will have it). If there's a simpler solution, I'm all for it -- but my fixes do work.