How to avoid using '\c' in man pages

[Bjarni Ingi Gislason]

  For a background material see Debian bug #1036826 or
the home page of "Bug Reports" in Debian for the package "po4a".

  For a three font case,
add a temporary roman font change in an argument,
that will say (including italic corrections)

"\/\fR" in front of the roman (upright) part and "\,\fP" after it.

  An example from "groff_man.7"

.IR topic [\c
.BI , " another-topic"\c
.RB "].\|.\|.\& \e\- "\c
.I summary-description

(N.B. 'RB' is used for a pure roman font as an 'R' font macro does not
exist)

translates to

.IB topic\/\fR[\,\fP ", " "another-topic\/\fR].\|.\|.\& \e\- 
\,\fPsummary-description"

  or use '\' to break a long line into two physical lines
(one logical line)

.IB topic\/\fR[\,\fP ", " "another-topic\/\fR].\|.\|.\& \e\- \
\,\fPsummary-description"

  The readability for humans suffers with such a change.