Readline runtime error while typing <tab> in enquoted argument

Description:

Entering the command:

foo "<tab>

throws a runtime error caused by readline.

Steps to reproduce:

nil@laptop :: ~/dev/shnake $ python Python 3.4.1 (default, May 19 2014, 17:23:49) [GCC 4.9.0 20140507 (prerelease)] on linux Type "help", "copyright", "credits" or "license" for more information.

import shnake interface = shnake.Shell() interface.cmdloop() cmdshell > help "*** Error raised: Runtime Error: can't re-enter readline