man.hyphenate.filenames boolean man.hyphenate.filenames Hyphenate filenames? 0 If zero (the default), hyphenation is suppressed for filename output. If hyphenation is already turned off globally (that is, if man.hyphenate is zero, setting man.hyphenate.filenames is not necessary. If man.hyphenate.filenames is non-zero, filenames will not be treated specially and are subject to hyphenation just like other words. If you are thinking about setting a non-zero value for man.hyphenate.filenames in order to make long filenames/pathnames break across lines, you'd probably be better off experimenting with setting the man.break.after.slash parameter first. That will cause long pathnames to be broken after slashes.