xmlrpc: include UNIX mbox 'From ' header in patch_get_mbox()

This function is misleadingly named 'mbox'; the contents do not begin
with a proper 'From xxx <date>' separator line. (Notably, the mbox
format does not have an authoritative standard, but at least this basic
'separator' construct is noted in http://tools.ietf.org/html/rfc4155.)

The Message.as_string() function takes an optional [unixfrom] boolean
argument. Let's use it, like we do everywhere else (including in the web
interface 'mbox' link).

Among other things, this means that we can straightforwardly concatenate
the output of patch_get_mbox(), and more tools can use this output
as-is.

Example header:

>From patchwork Fri Nov 21 18:24:29 2014
...

Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>

diff --git a/apps/patchwork/views/xmlrpc.py b/apps/patchwork/views/xmlrpc.py
index a109866108b83a2a22ccb088837eddce03d3de0c..e188eb31c7e093e94540020f2dcb8034abeb44b0 100644 (file)
--- a/apps/patchwork/views/xmlrpc.py
+++ b/apps/patchwork/views/xmlrpc.py
@@ -381,7 +381,7 @@ def patch_get_mbox(patch_id):
     """Return mbox string for the given patch ID."""
     try:
         patch = Patch.objects.filter(id = patch_id)[0]
-        return patch_to_mbox(patch).as_string()
+        return patch_to_mbox(patch).as_string(True)
     except:
         return ""