misc/py-cppman: add port: C++ 98/11/14/17/20 manual pages on the terminal

Cppman is a tool that provides C++ manual pages on the terminal. It
acts as a convenient interface to view formatted C++ documentation
directly from cplusplus.com and cppreference.com, allowing developers
to access relevant information quickly without switching to a web
browser.

Features:
- Supports two backends (switch it with cppman -s):
  cplusplus.com
  cppreference.com
- Syntax highlighting support for sections and example source code.
- Usage/Interface similar to the 'man' command
- Hyperlink between manpages (only available when pager=vim)
  - Press Ctrl-] when cursor is on keyword to go forward and Ctrl-T to
    go backward.
  - You can also double-click on keyword to go forward and right-click
    to go backward.
- Frequently update to support cplusplus.com.

WWW: https://github.com/aitjcize/cppman

Co-authored-by: freebsd@fron.io

PR:		284157
Reported by:	freebsd@fron.io (initial version)

1 files changed, 16 insertions, 0 deletions

diff --git a/misc/py-cppman/pkg-message b/misc/py-cppman/pkg-message
new file mode 100644
index 000000000000..a0a6582fc08d
--- /dev/null
+++ b/misc/py-cppman/pkg-message
@@ -0,0 +1,16 @@
+[
+{ type: install
+  message: <<EOM
+To support vim on nvim as pager, cppman needs fdescfs(5)
+to be mounted on /dev/fd.
+
+If /dev/fd is not already mounted:
+
+	mount -t fdescfs fdesc /dev/fd
+
+To make it permanent, add the following line to /etc/fstab:
+
+	fdesc	/dev/fd		fdescfs		rw	0	0
+EOM
+}
+]