3 files changed, 14 insertions, 6 deletions
diff --git a/buff.c b/buff.c
index 91593bb..1a358e8 100644
--- a/buff.c
+++ b/buff.c
@@ -59,7 +59,7 @@ void print_lines(char lineno){
   p = b_start;
 
   
-  printf(">>> *** addr1: %d addr2: %d ***\n", addr1, addr2);
+  fprintf(stderr, ">>> *** addr1: %d addr2: %d ***\n", addr1, addr2);
   for (i=1; i<addr2; i++) p = p->next;
   pos = i;
   cur = p;
diff --git a/main.c b/main.c
index 0599575..4fb2175 100644
--- a/main.c
+++ b/main.c
@@ -58,7 +58,9 @@ int get_addr(const char **cmd){
         break;
       case ',':
         comma = 1;
-        if (addr1 < addr2){
+        if (addr1 ==-1)
+          addr2 = 1, addr1=num;
+        else if (addr1 < addr2){
           *cmd = c;
           return -1; 
         }
@@ -82,6 +84,10 @@ int get_addr(const char **cmd){
     return 0;
   }
   if (addr2 == -1){
+    if (comma){
+      addr2 = addr1;
+      return 2;
+    }
     addr2 = pos;
     return 1;
   }
@@ -103,9 +109,9 @@ void main_loop(){
     
     ret = get_addr((const char **) &cmd);
     
-    printf(">>> *** pos: %d address: %d ***\n", pos, ret);
+    fprintf(stderr,">>> *** pos: %d address: %d ***\n", pos, ret);
     if (ret) {
-      printf(">>>   *** addr1: %d, addr2= %d***\n", addr1, addr2);
+      fprintf(stderr, ">>>   *** addr1: %d, addr2= %d***\n", addr1, addr2);
     }
 
     switch(cmd[0]){
@@ -157,8 +163,8 @@ void main_loop(){
       print_lineno();
       break;
     default:
-      printf(">>> **** unknown command: '%c'****\n", cmd[0])
-      ;
+      fprintf(stderr, ">>> **** unknown command: '%c'****\n", cmd[0]);
+      printf("?\n");
     }
   }
 }
diff --git a/problems.txt b/problems.txt
new file mode 100644
index 0000000..139597f
--- /dev/null
+++ b/problems.txt
@@ -0,0 +1,2 @@
+
+