https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87488
--- Comment #2 from Manuel López-Ibáñez <manu at gcc dot gnu.org> --- Actually, according to https://gist.github.com/egmontkob/eb114294efbcd5adb1944c9f3cb5feda#detecting-availability-of-the-feature "almost all terminal emulators ignore the OSC sequences they don't know about, so emitting OSC 8 will result in the anchor text not becoming a hyperlink, and the target URI getting lost." That is, the default could be "auto" since terminals that do not recognize the sequence will simply discard it.
