1 files changed, 28 insertions, 14 deletions

diff --git a/main.c b/main.c
index aeeb680..e0b60ff 100644
--- a/main.c
+++ b/main.c
@@ -4,12 +4,14 @@
 #include "buff.h"
 #include <ctype.h>
 
+
+
 line_t *b_start = NULL;
 line_t *b_end = NULL;
 line_t *cur = NULL;
 unsigned int num = 0;
 unsigned int pos = 0;
-/* addr1 is the lasr address, while addr2 is the previous one */
+/* addr1 is the last address, while addr2 is the previous one */
 int addr1, addr2;
 
 
@@ -117,28 +119,40 @@ void main_loop(){
     }
 
     switch(cmd[0]){
-    case 'i':
-      if (addr1 > -1)
-        move_to_line(addr1, 0);
-      insert_lines();
-      break;
     case 'a':
       if (addr1 > -1)
         move_to_line(addr1, 0);
       append_lines();
       break;
+    case 'c':
+      if (addr1 > -1)
+        move_to_line(addr1,0);
+      delete_lines();
+      addr1 = addr2 = pos;
+      append_lines();
     case 'd':
+      if (ret == -1){
+        E;
+        break;
+      }
+      if (ret == 2){
+        CHECKADDR;
+      }
+      if (ret == 1)
+        addr2 = addr1;
       delete_lines();
       break;
+    case 'i':
+      if (addr1 > -1)
+        move_to_line(addr1, 0);
+      insert_lines();
+      break;
     case 'n': p = 1;
     case 'p':
-      if (ret == 2)
-        if (addr1 < addr2){
-          printf("?\n");
-          break;
-        }
-        else
-          print_lines(p);
+      if (ret == 2){
+        CHECKADDR;
+        print_lines(p);
+      }
       else  if (ret == 1) 
         move_to_line(addr2, 1);
       else if (ret == 0)
@@ -166,7 +180,7 @@ void main_loop(){
       break;
     default:
       fprintf(stderr, ">>> **** unknown command: '%c'****\n", cmd[0]);
-      printf("?\n");
+      E;
     }
   }
 }