updated for version 7.3.507

Problem:    When exiting with unsaved changes, selecting an existing file in
	    the file dialog, there is no dialog to ask whether the existing
	    file should be overwritten. (Felipe G. Nievinski)
Solution:   Call check_overwrite() before writing. (Christian Brabandt)

src/ex_cmds.c

@@ -25,7 +25,6 @@ static int viminfo_encoding __ARGS((vir_T *virp));
 static int read_viminfo_up_to_marks __ARGS((vir_T *virp, int forceit, int writing));
 #endif
 
-static int check_overwrite __ARGS((exarg_T *eap, buf_T *buf, char_u *fname, char_u *ffname, int other));
 static int check_readonly __ARGS((int *forceit, buf_T *buf));
 #ifdef FEAT_AUTOCMD
 static void delbuf_msg __ARGS((char_u *name));
@@ -2722,7 +2721,7 @@ do_write(eap)
  * May set eap->forceit if a dialog says it's OK to overwrite.
  * Return OK if it's OK, FAIL if it is not.
  */
-    static int
+    int
 check_overwrite(eap, buf, fname, ffname, other)
     exarg_T	*eap;
     buf_T	*buf;

src/ex_cmds2.c

@@ -1489,6 +1489,7 @@ dialog_changed(buf, checkall)
     char_u	buff[DIALOG_MSG_SIZE];
     int		ret;
     buf_T	*buf2;
+    exarg_T     ea;
 
     dialog_msg(buff, _("Save changes to \"%s\"?"),
 			(buf->b_fname != NULL) ?
@@ -1498,13 +1499,19 @@ dialog_changed(buf, checkall)
     else
 	ret = vim_dialog_yesnocancel(VIM_QUESTION, NULL, buff, 1);
 
+    /* Init ea pseudo-structure, this is needed for the check_overwrite()
+     * function. */
+    ea.append = ea.forceit = FALSE;
+
     if (ret == VIM_YES)
     {
 #ifdef FEAT_BROWSE
 	/* May get file name, when there is none */
 	browse_save_fname(buf);
 #endif
-	if (buf->b_fname != NULL)   /* didn't hit Cancel */
+	if (buf->b_fname != NULL && check_overwrite(&ea, buf,
+				    buf->b_fname, buf->b_ffname, FALSE) == OK)
+	    /* didn't hit Cancel */
 	    (void)buf_write_all(buf, FALSE);
     }
     else if (ret == VIM_NO)
@@ -1532,7 +1539,9 @@ dialog_changed(buf, checkall)
 		/* May get file name, when there is none */
 		browse_save_fname(buf2);
 #endif
-		if (buf2->b_fname != NULL)   /* didn't hit Cancel */
+		if (buf2->b_fname != NULL && check_overwrite(&ea, buf2,
+				  buf2->b_fname, buf2->b_ffname, FALSE) == OK)
+		    /* didn't hit Cancel */
 		    (void)buf_write_all(buf2, FALSE);
 #ifdef FEAT_AUTOCMD
 		/* an autocommand may have deleted the buffer */

src/proto/ex_cmds.pro

@@ -23,6 +23,7 @@ void ex_file __ARGS((exarg_T *eap));
 void ex_update __ARGS((exarg_T *eap));
 void ex_write __ARGS((exarg_T *eap));
 int do_write __ARGS((exarg_T *eap));
+int check_overwrite __ARGS((exarg_T *eap, buf_T *buf, char_u *fname, char_u *ffname, int other));
 void ex_wnext __ARGS((exarg_T *eap));
 void do_wqall __ARGS((exarg_T *eap));
 int not_writing __ARGS((void));

src/version.c

@@ -714,6 +714,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    507,
 /**/
     506,
 /**/