commands/globals: Only set stdin to a pipe if there is data

Otherwise the editor will crash.

I can't figure out for the life of me to test this. I thought that I
would be able to do something like detect if stdin is a tty or something
else, but that doesn't seem to work.

Fixes #1137

1 files changed, 1 insertions, 1 deletions

diff --git a/alot/commands/globals.py b/alot/commands/globals.py
index 787ff450..565bd742 100644
--- a/alot/commands/globals.py
+++ b/alot/commands/globals.py
@@ -268,7 +268,7 @@ class ExternalCommand(Command):
         def thread_code(*_):
             try:
                 proc = subprocess.Popen(self.cmdlist, shell=self.shell,
-                                        stdin=subprocess.PIPE,
+                                        stdin=subprocess.PIPE if stdin else None,
                                         stderr=subprocess.PIPE)
             except OSError as e:
                 return str(e)