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less: add a bit more robustness in keyboard reading code

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This commit is contained in:
Denis Vlasenko 2007-08-03 14:17:21 +00:00
parent 0e2c9fb4e0
commit 46340e398e
1 changed files with 3 additions and 1 deletions
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4
miscutils/less.c
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@ -699,10 +699,11 @@ static int less_getch(void)
char input[16];
unsigned i;
again:
memset(input, 0, sizeof(input));
getch_nowait(input, sizeof(input));
/* Detect escape sequences (i.e. arrow keys) and handle
* them accordingly */
if (input[0] == '\033' && input[1] == '[') {
set_tty_cooked();
i = input[2] - REAL_KEY_UP;
@ -740,6 +741,7 @@ static char* less_gets(int sz)
* but it is needed. Is it because of stdio? */
tcsetattr(kbd_fd, TCSANOW, &term_less);
c = '\0';
read(kbd_fd, &c, 1);
if (c == 0x0d)
return result;