Fix #210: simplify escape code to clear line

Since we just want to clear the complete line, and are already a the
beginning of the line, we can use the simpler \e[K which also seems
to fix the display resize bug in #210.

Signed-off-by: Joachim Wiberg <troglobit@gmail.com>

src/exec.c

@@ -286,7 +286,7 @@ static void prepare_tty(char *tty, speed_t speed, char *procname, struct rlimit
 static int activate_console(int noclear, int nowait)
 {
 	static const char msg[] = "\nPlease press Enter to activate this console.";
-	static const char clr[] = "\r\e[2K";
+	static const char clr[] = "\r\e[K";
 	static const char cup[] = "\e[A";
 	struct termios orig;
 	char c;

src/getty.c

@@ -196,7 +196,7 @@ static int do_login(char *name)
 
 static int getty(char *tty, speed_t speed, char *term, char *user)
 {
-	const char cln[] = "\r\e[2K\n";
+	const char cln[] = "\r\e[K\n";
 	char name[33];		/* useradd(1) limit at 32 chars */
 	pid_t sid;
 

src/helpers.c

@@ -227,7 +227,7 @@ void print_banner(const char *heading)
 		return;
 
 	buf[0] = 0;
-	strlcat(buf, "\r\e[2K", sizeof(buf));
+	strlcat(buf, "\r\e[K", sizeof(buf));
 
 	if (progress_style == PROGRESS_CLASSIC) {
 		strlcat(buf, "\e[1m", sizeof(buf));
@@ -312,7 +312,7 @@ void printv(const char *fmt, va_list ap)
 	if (progress_style == PROGRESS_CLASSIC)
 		cprintf("\r%s ", pad(buf, sizeof(buf), ".", sizeof(buf)));
 	else
-		cprintf("\r\e[2K%s%s", status(3), buf);
+		cprintf("\r\e[K%s%s", status(3), buf);
 }
 
 void print(int rc, const char *fmt, ...)