[Bug-readline] Bug report: Unwanted output on stdout from rl_initialize()

[Glen Coates]

To whom it may concern,

I'm not sure if this is a bug in readline or an incorrect use of 
rl_initialize() in Python, however I started noticing that importing the 
readline library would cause unwanted control characters on stdout, i.e:

<test.py>

import readline
print "hello"

$ python test.py | od -tc
0000000 033   [   ?   1   0   3   4   h   H   e   l   l   o  \n

By recompiling python, I managed to trace the output to rl_initialize():

<test.c>

#include <stdio.h>
#include <readline/readline.h>
#include <readline/history.h>

int main()
{
        rl_initialize();
        printf( "hello\n" );
        return 0;
}

$ ./test | od -tc
0000000 033   [   ?   1   0   3   4   h   h   e   l   l   o  \n

I'm using the readline library shipped with Fedora 7 (readline-5.2-4.fc7
).  I have never seen this in previous versions of Fedora.

Could you please confirm whether or not this is a bug in readline, or 
rl_initialize() is being used incorrectly and thus a bug report should 
be made to the Python project?

Cheers,
Glen