Re: about the ! builtin (Was: Re: gettext-0.14.1 build fails to run csc)

[Karl Berry]

    `!'    
         You can't use `!'; you'll have to rewrite your code.

    Would had been nice to document why.  Where does it not work?

Older versions of virtually every OS (Solaris, HP-UX, Irix, etc., maybe
*BSD too).  I don't know specific versions when it started being
supported.

Maybe these days it should be allowed.