diff --git a/ce/edit.c b/ce/edit.c
index 24b19fe..99d6a9d 100644
--- a/ce/edit.c
+++ b/ce/edit.c
@@ -82,6 +82,8 @@ static bool prepare_lines_cb (void* ctx, const char* start, size_t len) {
   if (editor.current_line == NULL)
     editor.current_line = line;
 
+  editor.total_lines++;
+
   return true;
 }
 
@@ -99,8 +101,8 @@ static void update_vert_scroll (size_t screen_rows) {
   if (editor.cursor.line < editor.row_offset)
     editor.row_offset = editor.cursor.line;
 
-  if (editor.cursor.line >= editor.row_offset + (screen_rows - 1))
-    editor.row_offset = editor.cursor.line - (screen_rows - 1) + 1;
+  if (editor.cursor.line >= editor.row_offset + screen_rows)
+    editor.row_offset = editor.cursor.line - screen_rows + 1;
 }
 
 static size_t count_digits (size_t n) {
@@ -131,30 +133,24 @@ void edit_start (const char* file_path, const char* text) {
   bool edit_run = true;
 
   while (edit_run) {
-    update_horz_scroll (cols);
-    update_vert_scroll (rows);
+    size_t gutter_width = count_digits (editor.total_lines);
+    size_t effective_cols = (cols > gutter_width) ? cols - gutter_width : cols;
 
-    int w;
-    const size_t backbuffer_max = 128 * 1024;
-    size_t bb_remaining = backbuffer_max;
+    update_horz_scroll (effective_cols);
+    update_vert_scroll (rows - 1);
+
+    const size_t backbuffer_max = 256 * 1024;
     char* backbuffer = arena_malloc (&temp_arena, backbuffer_max);
-    memset (backbuffer, 0, backbuffer_max);
     char* bbptr = backbuffer;
 
-    w = snprintf (bbptr, bb_remaining, ANSIQ_CUR_HOME);
-    bbptr += w;
-    bb_remaining -= w;
+    memcpy (bbptr, ANSIQ_CUR_HOME, sizeof (ANSIQ_CUR_HOME) - 1);
+    bbptr += sizeof (ANSIQ_CUR_HOME) - 1;
 
     size_t lines_drawn = 0;
     size_t current_idx = 0;
 
     struct list_node_link *line_link, *tmp_line_link;
 
-    list_foreach (editor.lines, line_link, tmp_line_link) editor.total_lines++;
-
-    size_t gutter_width = count_digits (editor.total_lines);
-    size_t effective_cols = (cols > gutter_width + 3) ? cols - (gutter_width + 3) : cols;
-
     list_foreach (editor.lines, line_link, tmp_line_link) {
       if (current_idx < editor.row_offset) {
         current_idx++;
@@ -166,14 +162,9 @@ void edit_start (const char* file_path, const char* text) {
 
       struct edit_line* line = list_entry (line_link, struct edit_line, lines_link);
 
-      w = snprintf (bbptr, bb_remaining, ANSIQ_SCR_CLR_LINE);
-      bbptr += w;
-      bb_remaining -= w;
-
-      w = snprintf (bbptr, bb_remaining, LINE_NUMBERS_STYLE " %*zu " ANSIQ_GR_RESET " ",
-                    (int)gutter_width, current_idx + 1);
-      bbptr += w;
-      bb_remaining -= w;
+      bbptr += snprintf (bbptr, (backbuffer_max - (bbptr - backbuffer)),
+                         ANSIQ_SCR_CLR_LINE LINE_NUMBERS_STYLE "%*zu" ANSIQ_GR_RESET,
+                         (int)gutter_width, current_idx + 1);
 
       size_t part1_len = line->gb.gap_start;
       size_t part2_len = line->gb.size - line->gb.gap_end;
@@ -187,9 +178,8 @@ void edit_start (const char* file_path, const char* text) {
         if (len > effective_cols)
           len = effective_cols;
 
-        w = snprintf (bbptr, bb_remaining, "%.*s", (int)len, &line->gb.buffer[start]);
-        bbptr += w;
-        bb_remaining -= w;
+        memcpy (bbptr, &line->gb.buffer[start], len);
+        bbptr += len;
         current_col += len;
       }
 
@@ -204,43 +194,28 @@ void edit_start (const char* file_path, const char* text) {
           if (current_col + len > effective_cols)
             len = effective_cols - current_col;
 
-          w = snprintf (bbptr, bb_remaining, "%.*s", (int)len,
-                        &line->gb.buffer[line->gb.gap_end + skip]);
-          bbptr += w;
-          bb_remaining -= w;
+          memcpy (bbptr, &line->gb.buffer[line->gb.gap_end + skip], len);
+          bbptr += len;
         }
       }
 
-      w = snprintf (bbptr, bb_remaining, ANSIQ_SCR_CLR2END "\n");
-      bbptr += w;
-      bb_remaining -= w;
+      bbptr += snprintf (bbptr, (backbuffer_max - (bbptr - backbuffer)), ANSIQ_SCR_CLR2END "\n");
 
       lines_drawn++;
       current_idx++;
     }
 
-    w = snprintf (bbptr, bb_remaining, ANSIQ_DYN_CUR_SET ANSIQ_SCR_CLR_LINE, (int)rows, 1);
-    bbptr += w;
-    bb_remaining -= w;
+    bbptr += snprintf (bbptr, (backbuffer_max - (bbptr - backbuffer)),
+                       ANSIQ_DYN_CUR_SET ANSIQ_SCR_CLR_LINE STATUS_LINE_STYLE
+                       "%*s" ANSIQ_DYN_CUR_SET
+                       "  Editing %s; line %zu col %zu; Mode: %s" ANSIQ_GR_RESET ANSIQ_DYN_CUR_SET
+                           ANSIQ_CUR_VISIBLE,
+                       (int)rows, 1, (int)cols, "", (int)rows, 1, file_path, editor.cursor.line + 1,
+                       editor.cursor.col + 1, string_modes[editor.mode],
+                       (int)(editor.cursor.line - editor.row_offset) + 1,
+                       (int)(editor.cursor.col - editor.col_offset) + 1 + (int)gutter_width);
 
-    w = snprintf (bbptr, bb_remaining, STATUS_LINE_STYLE "%*s" ANSIQ_DYN_CUR_SET, (int)cols, "",
-                  (int)rows, 1);
-    bbptr += w;
-    bb_remaining -= w;
-
-    w = snprintf (bbptr, bb_remaining, "  Editing %s; line %zu col %zu; Mode: %s" ANSIQ_GR_RESET,
-                  file_path, editor.cursor.line + 1, editor.cursor.col + 1,
-                  string_modes[editor.mode]);
-    bbptr += w;
-    bb_remaining -= w;
-
-    w = snprintf (bbptr, bb_remaining, ANSIQ_DYN_CUR_SET ANSIQ_CUR_VISIBLE,
-                  (int)(editor.cursor.line - editor.row_offset) + 1,
-                  (int)(editor.cursor.col - editor.col_offset) + 1 + (int)gutter_width + 3);
-    bbptr += w;
-    bb_remaining -= w;
-
-    mail_send (e_pgid, backbuffer, strlen (backbuffer));
+    mail_send (e_pgid, backbuffer, bbptr - backbuffer);
 
     uint8_t ch = 0;
     mail_receive (&ch, 1);
@@ -291,6 +266,7 @@ void edit_start (const char* file_path, const char* text) {
         editor.cursor.col = 0;
         editor.cursor.line++;
         editor.current_line = new_line;
+        editor.total_lines++;
       }
     } break;
     case KB_DELETE:
@@ -361,7 +337,6 @@ void edit_start (const char* file_path, const char* text) {
       break;
     }
 
-    editor.total_lines = 0;
     arena_reset (&temp_arena);
   }