Re: callback api, isearch, signals issue

[Chet Ramey]

On 1/6/23 10:07 AM, Andrew Burgess wrote:
> Hi,
>
> While working on GDB, which uses the callback API, I've run into some
> issues relating to reverse isearch and signal handling.
>
> At the end of this email is a small example program that uses the
> callback API.  This is a modified version of the example program that
> is included in the readline manual.
>
> The issue I have relies on a SIGINT arriving at just the wrong time.
> To reproduce this the test program uses rl_getc_function to setup a
> wrapper function (my_getc) that calls rl_getc.  After a couple of
> times calling my_getc, a SIGINT is sent to the process using kill().

Two questions: what does gdb do when it gets the SIGINT? Readline sends it
back to the calling application. I assume it just sets a flag? And does
gdb set rl_signal_event_hook?

--
``The lyf so short, the craft so long to lerne.'' - Chaucer
                 ``Ars longa, vita brevis'' - Hippocrates
Chet Ramey, UTech, CWRU    chet@case.edu    http://tiswww.cwru.edu/~chet/