$OpenBSD: bs_man.in,v 1.1 2019/01/17 06:29:14 schwarze Exp $
esc-bs_man - escaped backslashes in man(7) code prefix\*[usestr]suffix prefix\\*[usestr]suffix .. on a text line: prefix\\suffix

in a macro definition:

in a string definition: \*[teststr]

in a high-level macro argument: prefix ##\\*[usestr]## suffix

{\\$1} .. in a user-defined macro argument: .argmac prefix\\*[usestr]suffix