man.break.after.slash — Enable line-breaking after slashes?
If non-zero, line-breaking after slashes is enabled. This is mainly useful for causing long URLs or pathnames/filenames to be broken up or "wrapped" across lines (though it also has the side effect of sometimes causing relatively short URLs and pathnames to be broken up across lines too).
If zero (the default), line-breaking after slashes is disabled. In that case, strings containing slashes (for example, URLs or filenames) are not broken across lines, even if they exceed the maximum column widith.
If you set a non-zero value for this parameter, check your
man-page output carefuly afterwards, in order to make sure that the
setting has not introduced an excessive amount of breaking-up of URLs
or pathnames. If your content contains mostly short URLs or
pathnames, setting a non-zero value for
man.break.after.slash will probably result in
in a significant number of relatively short URLs and pathnames being
broken across lines, which is probably not what you want.