command line editing generally works

1 files changed, 10 insertions, 9 deletions

diff --git a/avr/cli_readline.c b/avr/cli_readline.c
index 1a0aaf2..08d2c4b 100644
--- a/avr/cli_readline.c
+++ b/avr/cli_readline.c
@@ -16,6 +16,7 @@
 
 #include "config.h"
 #include "con-utils.h"
+#include "print-utils.h"
 #include "command.h"
 #include "cli_readline.h"
 
@@ -67,7 +68,7 @@ static char *delete_char (char *buffer, char *p, int *colp, int *np, int plen)
 static void putnstr(char *str, int n)
 {
 	/* printf_P(PSTR("%.*s"), (int)n, str) */
-	while (n--)
+	while (n-- && *str)
 		putchar(*str++);
 }
 
@@ -212,10 +213,10 @@ static void cread_print_hist_list(void)
 	}                                                                          \
 }
 
-static void cread_add_char(char ichar, int insert, unsigned long *num,
-	       unsigned long *eol_num, char *buf, unsigned long len)
+static void cread_add_char(char ichar, int insert, unsigned int *num,
+	       unsigned int *eol_num, char *buf, unsigned int len)
 {
-	unsigned long wlen;
+	unsigned int wlen;
 
 	/* room ??? */
 	if (insert || *num == *eol_num) {
@@ -246,8 +247,8 @@ static void cread_add_char(char ichar, int insert, unsigned long *num,
 }
 
 static void cread_add_str(char *str, int strsize, int insert,
-			  unsigned long *num, unsigned long *eol_num,
-			  char *buf, unsigned long len)
+			  unsigned int *num, unsigned int *eol_num,
+			  char *buf, unsigned int len)
 {
 	while (strsize--) {
 		cread_add_char(*str, insert, num, eol_num, buf, len);
@@ -257,9 +258,9 @@ static void cread_add_str(char *str, int strsize, int insert,
 
 static int cread_line(const FLASH char *const prompt, char *buf, unsigned int *len)
 {
-	unsigned long num = 0;
-	unsigned long eol_num = 0;
-	unsigned long wlen;
+	unsigned int num = 0;
+	unsigned int eol_num = 0;
+	unsigned int wlen;
 	char ichar;
 	int insert = 1;
 	int esc_len = 0;