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[Bug-readline] Re: PATCH: PR tui/2173: Arrow keys no longer works in bre

From: H. J. Lu
Subject: [Bug-readline] Re: PATCH: PR tui/2173: Arrow keys no longer works in breakpoint command list
Date: Sat, 2 Dec 2006 14:15:41 -0800
User-agent: Mutt/

On Sat, Dec 02, 2006 at 02:08:26PM -0500, Chet Ramey wrote:
> H. J. Lu wrote:
> >>> I'm pretty sure this isn't right.  I got as far as figuring out that we
> >>> should be calling rl_callback_handler_install and
> >>> rl_callback_handler_remove at different times, always removing the
> >>> handler before calling readline recursively, but I couldn't quite work
> >>> out the right conditions.
> >> I assume by "this isn't right",  you mean my patch may break something.
> >> Do you have a testcase? It may get into readline:
> Unless the calling application is careful, this code will leave readline
> in an inconsistent state in the presence of a longjmp().  It relies on
> private state kept local to a single call to readline().
> I am leaning towards not including it for that reason.
> There should be no reason that the application cannot remove the callback
> handler and re-add it before calling readline synchronously, as Daniel or
> H.J. suggested.  The application is the only one in a position to know
> which is right.

Did you mean


is more appropriate?


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