$ less --version less 418 Copyright (C) 1984-2007 Mark Nudelman $ set | grep LESS LESS=' -R ' LESSCHARSET=UTF-8 LESSOPEN=' | /usr/local/bin/src-hilite-lesspipe.sh %s'
$ less --version less 487 (POSIX regular expressions) Copyright (C) 1984-2016 Mark Nudelman でも同じでした。