updated for version 7.3.901

Problem:    Outdated comment, ugly condition.
Solution:   Update a few comments, break line.

src/getchar.c

@@ -444,7 +444,7 @@ flush_buffers(flush_typeahead)
 	typebuf.tb_off = MAXMAPLEN;
 	typebuf.tb_len = 0;
     }
-    else		    /* remove mapped characters only */
+    else		    /* remove mapped characters at the start only */
     {
 	typebuf.tb_off += typebuf.tb_maplen;
 	typebuf.tb_len -= typebuf.tb_maplen;

src/misc1.c

@@ -5054,7 +5054,6 @@ vim_fnamencmp(x, y, len)
     int		cx = NUL;
     int		cy = NUL;
 
-    /* TODO: multi-byte characters. */
     while (len > 0)
     {
 	cx = PTR2CHAR(px);

src/undo.c

@@ -216,6 +216,7 @@ u_check(int newhead_may_be_NULL)
 
 /*
  * Save the current line for both the "u" and "U" command.
+ * Careful: may trigger autocommands that reload the buffer.
  * Returns OK or FAIL.
  */
     int
@@ -238,8 +239,9 @@ u_save(top, bot)
     if (undo_off)
 	return OK;
 
-    if (top > curbuf->b_ml.ml_line_count ||
+    if (top > curbuf->b_ml.ml_line_count
-			    top >= bot || bot > curbuf->b_ml.ml_line_count + 1)
+	    || top >= bot
+	    || bot > curbuf->b_ml.ml_line_count + 1)
 	return FALSE;	/* rely on caller to do error messages */
 
     if (top + 2 == bot)

src/version.c

@@ -728,6 +728,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    901,
 /**/
     900,
 /**/