Ævar Arnfjörð Bjarmason <avarab@xxxxxxxxx> writes: > Fix widely supported but non-POSIX basic regex syntax introduced in > [1] and [2]. On GNU, NetBSD and FreeBSD the following works: > > $ echo xy >f > $ grep 'xy\?' f; echo $? > xy > 0 > > The same goes for "\+". The "?" and "+" syntax is not in the BRE > syntax, just in ERE, but on some implementations it can be invoked by > prefixing the meta-operator with "\", but not on OpenBSD: Yup, thanks for testing, spotting and fixing. I do recall finding one of these during my review during recent couple of cycles, but apparently eyeballing will not always catch everything X-<.
