slackpost: Properly strip out reply markers

Remove all lines beginning with ">", and the line immediately before
them.

Signed-off-by: Anna Schumaker <Anna@OcarinaProject.net>

slack/chat.py

@@ -3,9 +3,7 @@
 #
 from . import api
 from . import auth
-from urllib import request
 
 def postMessage(channel, text):
-    post = request.quote(text)
     api.call("chat.postMessage", token = auth.token(), channel = channel,
-             text = post, as_user = True, parse = "full")
+             text = text, as_user = True, parse = "full")

slackpost.py

@@ -25,5 +25,13 @@ for c in slack.channels.list():
 if channel == None:
     sys.exit(1)
 
-text = headers.get_payload().split("\n")[0]
+lines = headers.get_payload().strip().split("\n")
+
+# Strip out quoted text
+if lines[-1][0] == ">":
+    while lines[-1][0] == ">":
+        lines.pop(-1)
+    lines.pop(-1)
+
+text = ' '.join(lines).strip()
 channel.post(text)