--- a/util.c	Sun May 27 09:23:36 2012 +0300
+++ b/util.c	Sun May 27 10:06:42 2012 +0300
@@ -322,6 +322,7 @@
     else
         buf->data[pos] = ch;
 
+    buf->dirty = TRUE;
     return 0;
 }
 
@@ -340,6 +341,8 @@
         buf->data[pos] = ch;
     }
     buf->len++;
+
+    buf->dirty = TRUE;
     return 0;
 }
 
@@ -350,6 +353,7 @@
     {
         memmove(&(buf->data[pos]), &(buf->data[pos+1]), buf->len - pos);
         buf->len--;
+        buf->dirty = TRUE;
         return 0;
     }
     else
@@ -361,6 +365,7 @@
 {
     buf->len = 0;
     buf->pos = 0;
+    buf->dirty = TRUE;
 }
 
 
@@ -370,6 +375,7 @@
 
     res->data = (char *) th_malloc(n);
     res->size = n;
+    res->dirty = TRUE;
 
     return res;
 }
@@ -398,6 +404,7 @@
 
     memcpy(res->data, src->data, src->size);
     res->pos = res->len = src->len;
+    res->dirty = TRUE;
 
     return res;
 }
@@ -437,6 +444,8 @@
         buf->pos = buf->len;
     else
         buf->pos = pos;
+
+    buf->dirty = TRUE;
 }
 
 

--- a/util.h	Sun May 27 09:23:36 2012 +0300
+++ b/util.h	Sun May 27 10:06:42 2012 +0300
@@ -56,6 +56,7 @@
 {
     size_t pos, len, size;
     char *data;
+    BOOL dirty;
 } nn_editbuf_t;
 
 int         nn_editbuf_write(nn_editbuf_t *buf, size_t pos, char ch);