ui: Handle asyncio coroutines in call_cmd

This allows twisted deferred's (which is all an inlineCallback actually
is) to be mixed with asyncio coroutines (async def), by wrapping them in
a special twisted function for handling asyncio coroutines.

1 files changed, 2 insertions, 0 deletions

diff --git a/alot/ui.py b/alot/ui.py
index f4b0dc3a..3a377cfd 100644
--- a/alot/ui.py
+++ b/alot/ui.py
@@ -707,6 +707,8 @@ class UI(object):
 
             # call cmd.apply
             def call_apply(_):
+                if asyncio.iscoroutinefunction(cmd.apply):
+                    return defer.ensureDeferred(cmd.apply(self))
                 return defer.maybeDeferred(cmd.apply, self)
 
             prehook = cmd.prehook or (lambda **kwargs: None)