On Wed, Aug 12, 2020 at 12:15 PM Eric Sunshine <sunshine@xxxxxxxxxxxxxx> wrote: > On Wed, Aug 12, 2020 at 11:37 AM Jeff King <peff@xxxxxxxx> wrote: > > I don't think this is an error. The program can tell which you meant by > > the number of arguments. POSIX lays out some rules here (from "man > > 1posix test" on my system, but I'm sure you can find it online): > > I intentionally didn't focus on or mention POSIX in my response > because I wanted to represent the Real World reason why "x$var" is > such a common idiom. [...] I probably should have done a better job in my original response to Taylor to make it clear that I was talking about Real World (even if old) rather than POSIX.