Gallopsled/pwntools — pull request #243 by zachriggle (2014-12-23 15:50:08+00:00)
Title: Add a recvline_contains routine

Fixes #239
```py
>>> from pwn import *
>>> t = tube()
>>> t.unrecv("AAAA\nBBB\nCCXCC\nDDDD\n")
>>> t.recvline_contains('X')
'CCXCC'
>>> t.recvline()
'DDDD\n'
```