The portable way to have the dashes to be rendered as ASCII minuses is
to use the sequence backslash-dash, use this style at least for text
that can be copied and pasted (e.g. command names, file names, element
options).
Also use backslash-dash in the NAME section as suggested by lexgrog(1).
https://bugzilla.gnome.org/show_bug.cgi?id=773917
Original commit message from CVS:
Move man pages from %.1 to %.1.in, and add a rule to make .1 files
from .1.in, replacing program names with their versioned equivalent.
Handles nroff escape code for - (\-).
