Inserting flow-control chars with an mpsafetty kernel

swell.k at swell.k at
Tue Aug 26 11:01:47 UTC 2008

Giorgos Keramidas <keramida at> 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?

If not, nevermind.

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