1 files changed, 15 insertions, 8 deletions
diff --git a/buff.c b/buff.c
index c9d6800..fde4448 100644
--- a/buff.c
+++ b/buff.c
@@ -138,6 +138,7 @@ int read_file(){
   cur = b_end;
   fclose(fin);
   fprintf(stderr, "%d\n", tot);
+  mod = 0;
   return 0;
 }
 
@@ -207,7 +208,7 @@ void append_lines(){
   first = last = NULL;
   n = __get_lines(stdin, &first, &last, &tot);
   __append_lines(addr1, n, first, last);
-  
+  mod = 1;
 }
 
 void insert_lines(){
@@ -221,7 +222,7 @@ void insert_lines(){
     __append_lines(addr1, n, first, last);
   else
     __append_lines(addr1-1, n,  first, last);
-  
+  mod = 1;
 }
 
 
@@ -264,7 +265,8 @@ void delete_lines(){
     pos = addr2 - 1;
     cur = prev;
   }
-  num -= addr1 - addr2 + 1; 
+  num -= addr1 - addr2 + 1;
+  mod = 1;
 }
 
 
@@ -276,15 +278,19 @@ void change_lines(){
 
 
 
-int write_lines(){
+int write_lines(char app){
   FILE *fout;
   line_t *l;
   int tot=0;
-  
-  if (! (fout = fopen(fname, "w+"))){
-    return -1;
-  }
 
+  if (!app)
+    fout = fopen(fname, "w+");
+  else
+    fout = fopen(fname, "a");
+
+  if (!fout)
+    return -1;
+  
   l = b_start;
   while(l){
     tot += fprintf(fout, "%s", l->c);
@@ -381,4 +387,5 @@ void transfer_lines(int addr, char move){
   }
   __append_lines(addr, n, first, last);
   move_to_line(addr+n,0);
+  mod = 1;
 }