Symbol '-' is sometimes incorrectly used in systemtap manpages to represent
minus sign. groff translates that symbol to hyphen (‐, U+2010) if UTF-8 locale
is used, that symbol may look identical to minus, but it will cause problems if
someone copies text from manpages to script or command-line. One should use '\-'
to represent minus sign in manpages.
Created attachment 1234 [details]
fix for the bug
I was unable to reproduce the problem on my system, but I did find documentation
supporting what Eugeniy said. From the groff_char manpage:
"the ISO Latin-1 ‘Hyphen, Minus Sign’ (code 45) prints as a hyphen; a minus sign
can be obtained with \-."