Certain hyphenated options on rsync manual page are unsearchable

[purplearmadillo77]

Observed with

$ rsync --version
rsync  version 3.3.0  protocol version 31

on 64-bit Cygwin.

Steps to reproduce:

• Run man rsync.
• Search for no-compress. You find no results.
• Search for implies --no. You find:

This  option can be used to override the automatic negotiation of
the compression algorithm that occurs when  --compress  is  used.
The  option implies --compress unless "none" was specified, which
instead implies --no‐compress.

I sure see --no-compress on the bottom. This is just one example. There are a couple other unsearchable hyphens in the manual page as well.

(Conjectured) Cause:
The nroff format that is used to write man pages has the following peculiarity:

• The raw ASCII hyphen - in the nroff source is rendered as U+2010 HYPHEN.
• The escaped ASCII hyphen \- in the nroff source is rendered as an ASCII hyphen.

Inspecting the source of rsync.1, we see that the relevant hyphens were not escaped:

This option can be used to override the automatic negotiation of the
compression algorithm that occurs when \fB\-\-compress\fP is used.  The
option implies \fB\-\-compress\fP unless "none" was specified, which
instead implies \fB\-\-no-compress\fP.

[WayneD]

One thing you can do is to search the web version.

I know that the words are searchable in Chrome, since chrome will cross-match a dash and that hyphen.