At 01:58 PM 10/15/2002 -0400, Christopher Faylor wrote:
>On Tue, Oct 15, 2002 at 05:18:16AM -0400, Lester Ingber wrote:
>>Under cygwin-3-13, ispell does not respond to keystrokes
>>The window seems to freeze. Under 3-12, it works as expected.
>
>so this will probably require more debugging on your part.
The program below demonstrates the issue. After the second ioctl,
getchar() becomes non-blocking and returns -1 even though it should
(? I am not an expert on termio ...) wait for a character because of
sbuf.c_cc[VMIN] = 1;
It works as expected with 3-12. This is on WinME.
Incidentally what's happening is that ispell is generating infinitely
many "bells" while getting getchar() == -1. They can be heard on the
console. Under rxvt this eventually causes fflush(stdout) to freeze.
Pierre
#include <termio.h>
#include <stdio.h>
main ()
{
struct termio sbuf;
int c, n;
ioctl (0, TCGETA, (char *) &sbuf);
fprintf(stdout,"getchar\n");
while ((c = getchar()) != '\n') printf("%d ", c);
fprintf(stdout, "\n");
sbuf.c_lflag &= ~ICANON;
sbuf.c_cc[VMIN] = 1;
sbuf.c_cc[VTIME] = 1;
ioctl (0, TCSETAW, (char *) &sbuf);
n = 0;
fprintf(stdout,"getchar\n");
while (((n++ < 20) && (c = getchar()) != '\n')) printf("%d ", c);
fprintf(stdout, "\n");
sbuf.c_lflag |= ICANON;
ioctl (0, TCSETAW, (char *) &sbuf);
}
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