They claim that firefox since 1.9.1 respects the needsterminal in mailcap so it shouldn't run/show less etc: https://bugzilla.mozilla.org/show_bug.cgi?id=44262

They claim that firefox since 1.9.1 respects the needsterminal in mailcap so it shouldn't run/show less etc: https://bugzilla.mozilla.org/show_bug.cgi?id=442629 https://bugzilla.mozilla.org/show_bug.cgi?id=442629 if it doesn't you should reopen (also I wonder what it does if there are no lines without needsterminal).