[ahoka]

Does not beat the “BIND zone files generated by m4 macros from a shell script”, I had the honor having to modify. Comes close second, though.

[cheekibreeki2]

No raw sendmail.cf? :)

[doubled112]

Thanks, that little twitch under my eye just started up.

I worked at an org where an admin went a little rogue and updated the config without using the macro file. Another admin didn't realize. Well, didn't realize until it was too late.

[rwmj]

autoconf (configure.ac) files are also m4 hell, with some whitespace surprises.