Inserting flow-control chars with an mpsafetty kernel
Giorgos Keramidas
keramida at freebsd.org
Tue Aug 26 11:09:47 UTC 2008
On Tue, 26 Aug 2008 14:39:45 +0400, swell.k at gmail.com wrote:
> Giorgos Keramidas <keramida at ceid.upatras.gr> writes:
>> Hi Ed,
>> After installing the mpsafetty changes it seems that flow-control ^S
>> and ^Q characters cannot be inserted inserted anymore. I first
>> noticed this when CTRL-S stopped working as 'search-forward' in
>> Emacs, but it seems the same problem exists in /usr/bin/vi, vim, bash
>> and a few other programs that I tested.
>>
>> With a kernel before the mpsafetty changes, I can fire up /usr/bin/vi
>> and type in insert-mode `^V^S'. This correctly inserts a ^S
>> character. With a kernel from svn revision /head at 181939 ^V no longer
>> quotes the next byte in vi(1) and other programs.
>
> Could you possibly be trying to type them inside screen(1)? If so, are
> they working correctly outside it?
Yes. I was using screen when I tried this. Now that I tried outside of
screen, C-s and C-q work in Emacs and ^V^S or ^V^Q works in /usr/bin/vi.
Is this a known bug of screen? Are there already patches floating
around to fix it?
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