Added readline support to cmdln-module.

This was already fixed in the original module:
https://github.com/trentm/cmdln/issues/1

Signed-off-by: Florian Bergmann <fbergmann@suse.de>

osc/cmdln.py

@@ -393,6 +393,15 @@ class RawCmdln(cmd.Cmd):
         """
         self.cmdlooping = True
         self.preloop()
+        if self.use_rawinput and self.completekey:
+            try:
+                import readline
+                self.old_completer = readline.get_completer()
+                readline.set_completer(self.complete)
+                readline.parse_and_bind(self.completekey+": complete")
+            except ImportError:
+                pass
+        try:
             if intro is None:
                 intro = self.intro
             if intro:
@@ -434,6 +443,13 @@ class RawCmdln(cmd.Cmd):
                     retval = 1
                 self.lastretval = retval
             self.postloop()
+        finally:
+            if self.use_rawinput and self.completekey:
+                try:
+                    import readline
+                    readline.set_completer(self.old_completer)
+                except ImportError:
+                    pass
         self.cmdlooping = False
         return retval