doc: Explain git format-patch revision format

* doc/contributing.texi(Sending a Patch Series): Add a note about
`git format-patch` revision format and link to git documentation.

Change-Id: Ie08f85dc19e3804165fb184664b74e85a804d7c4
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Ekaitz Zarraga 2024-09-05 20:48:29 +02:00
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@ -2194,6 +2194,18 @@ $ git format-patch -@var{NUMBER_COMMITS} -o outgoing \
--cover-letter --base=auto
@end example
@quotation Note
@code{git format-patch} accepts a wide range of
@uref{https://git-scm.com/docs/gitrevisions, revision range} specifiers.
For example, if you are working in a branch, you could select all commits
in your branch starting at @code{master}.
@example
$ git format-patch master..@var{MY_BRANCH} -o outgoing \
--cover-letter --base=auto
@end example
@end quotation
We can now send @emph{just} the cover letter to the
@email{guix-patches@@gnu.org} address, which will create an issue
that we can send the rest of the patches to.