Hello!

I've been reading
http://www.kernel.org/pub/software/scm/git/docs/user-manual.html till
late night and found that "--" prefixing options names (like in "git
diff --cached") are replaced by asciidoc with a single unicode
character "—" which makes them unsuitable for pasting them to a
terminal.

I've cloned the git repository from
git://git.kernel.org/pub/scm/git/git.git, made some changes to
Documentation/user-manual.txt, tested the results and commited my work
locally.
The attached file is a result of running `git diff HEAD~1`.

My local log message:
------------------
asciidoc escaping of "--"

Asciidoc replaces "--" with "—" when not in verbatim mode. This is
sometimes unwanted -- especially when citing command line options like
"git diff --cached". This commit includes proper quotes in user-manual.txt.
------------------

Hope that's of any use.

Best regards,
Piotr