So you're saying that "should normally be" doesn't mean the "the default value should normally be", but rather that "commonly, people use".
Right, the _default_ value depends on _your_ system. On some systems, it is one thing, and on other it is something else. Which is why "you" (you in the sense, you or your distribution) should have a config.site that specifies the correct thing for your system. So maybe you would like to change it to something like: [ This should normally be /var/run, but the default value should be /usr/local/var/run, but write it as $(localstatedir)/run ] Or even omit any reference to /var/run, which is just misleading, and say: [ This should normally be /usr/local/var/run, but write it as $(localstatedir)/run ] Makes sense? Not at all, since we really want it to be /var/run not something else, but the default is different. So we want it to be /var/run, but it is set to localstatedir/run for "special" reasons. I don't see why we would like to mention /var/run here if we don't mention for example /etc (we mention /usr/local/etc). Because for "locally" installed software, the location is /usr/local/etc -- not /etc. /var/run is special.