[git-buildpackage] [PATCH] doc: expand --git-pbuilder-options docs

[Ken Dreyer]

Give an example of how to use the --git-pbuilder-options option, and
explain how it interacts with git-pbuilder.
---
 docs/manpages/gbp-buildpackage.sgml | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/docs/manpages/gbp-buildpackage.sgml b/docs/manpages/gbp-buildpackage.sgml
index 31faabc..a246e68 100644
--- a/docs/manpages/gbp-buildpackage.sgml
+++ b/docs/manpages/gbp-buildpackage.sgml
@@ -417,7 +417,13 @@
             <para>
               Options to pass to pbuilder when building via &git-pbuilder; (either
               via <option>--git-pbuilder</option>, <option>--git-qemubuilder</option>
-              or the corresponding configuration file options).
+	      or the corresponding configuration file options). For example, to
+	      tell pbuilder to use an alternate .pbuilderrc file, you may run
+	      &gbp-buildpackage; with
+	      <option>--git-pbuilder-options="--configfile
+	      /tmp/my/pbuilderrc"</option>". If unset, no
+	      <replacable>GIT_PBUILDER_OPTIONS</replacable> environment
+	      variable will be passed to <command>git-pbuilder</command>.
             </para>
           </listitem>
 	</varlistentry>
-- 
2.13.3