Re: [Qemu-devel] [PATCH] qemu-io: fix EOF Ctrl-D handling in qemu-io readline code

[Markus Armbruster]

Eric Blake <address@hidden> writes:

> On 12/06/2017 08:25 AM, Daniel P. Berrange wrote:
>
>>> Should we instead be looking for a match against the current termios()
>>> c_cc[VEOF] setting, in case the user prefers something other than ^D via
>>> stty?  Does readline provide any functionality for automating this?
>> 
>> I was afraid someone was going to suggest doing that. I was being lazy by
>> hardcoding Ctrl-D, but yes the real readline() library will honour the
>> VEOF value.  QEMU though is using a home-grown reimpl of readline...
>
> I understand why we can't use modern libreadline (it is licensed GPLv3+,
> making it impossible to use with our GPLv2-only code) - but doesn't BSD
> have a readline-alike library with BSD licensing that we could use
> instead of implementing readline ourselves?  (Was it named libinput?)

We've discussed this before.  Short story: we can't use the original due
to our foolish licensing mistake, and the clones don't cut the mustard.
Long story:
http://lists.gnu.org/archive/html/qemu-devel/2016-10/msg02697.html