On 7/19/19 11:28 AM, Michael Orlitzky wrote: > On 7/19/19 2:40 AM, n952162 wrote: >> The man page says: >> >> The pattern is a regular expression, as recognized by >> the regular expression library supplied by your system >> >> There are many regular expression libraries on my system. >> >
Actually, the ambiguity in the man page is there for a reason. When you configure less, you can pass --with-regex=<library> to select an implementation. You get libpcre with USE=pcre in Gentoo. Without USE=pcre, I think you get the GNU libc implementation (from grep et al.) that just coincidentally supports "\b" as well. There are a few other options for that flag that aren't available in Gentoo, though, so the man page is being vague out of necessity.
