> M4 is an interesting macro language, but developed (IMO) a somewhat undeserved reputation for being awful because it is how you build autoconf inputs as well

> M4 is an interesting macro language, but developed (IMO) a somewhat undeserved reputation for being awful because it is how you build autoconf inputs as well as sendmail configuration files. Guilt by association. Hmm...well, I remember my first Linux experience (1995): I rather messed with straight sendmail.cf than struggled with the M4 scripts which generated it. I never got those damn M4 scripts to do what I wanted. I guess M4 and I are incompatible.