# HG changeset patch
# User Bram Moolenaar <Bram@vim.org>
# Date 1642079706 -3600
# Node ID 5e65d802bd5293213052bc9230fe061f80801ab7
# Parent  6cd7cdcf0024eb389dfea4670370653c0e6229d2
patch 8.2.4074: going over the end of NameBuff

Commit: https://github.com/vim/vim/commit/de05bb25733c3319e18dca44e9b59c6ee389eb26
Author: Bram Moolenaar <Bram@vim.org>
Date:   Thu Jan 13 13:08:14 2022 +0000

    patch 8.2.4074: going over the end of NameBuff

    Problem:    Going over the end of NameBuff.
    Solution:   Check length when appending a space.

diff --git a/src/drawscreen.c b/src/drawscreen.c
--- a/src/drawscreen.c
+++ b/src/drawscreen.c
@@ -462,12 +462,13 @@ win_redr_status(win_T *wp, int ignore_pu
 	p = NameBuff;
 	len = (int)STRLEN(p);
 
-	if (bt_help(wp->w_buffer)
+	if ((bt_help(wp->w_buffer)
 #ifdef FEAT_QUICKFIX
-		|| wp->w_p_pvw
+		    || wp->w_p_pvw
 #endif
-		|| bufIsChanged(wp->w_buffer)
-		|| wp->w_buffer->b_p_ro)
+		    || bufIsChanged(wp->w_buffer)
+		    || wp->w_buffer->b_p_ro)
+		&& len < MAXPATHL - 1)
 	    *(p + len++) = ' ';
 	if (bt_help(wp->w_buffer))
 	{
diff --git a/src/testdir/test_edit.vim b/src/testdir/test_edit.vim
--- a/src/testdir/test_edit.vim
+++ b/src/testdir/test_edit.vim
@@ -2103,5 +2103,20 @@ func Test_edit_CTRL_hat()
   bwipe!
 endfunc
 
+" Weird long file name was going over the end of NameBuff
+func Test_edit_overlong_file_name()
+  CheckUnix
+
+  file 0000000000000000000000000000
+  file %%%%%%%%%%%%%%%%%%%%%%%%%%
+  file %%%%%%
+  set readonly
+  set ls=2 
+
+  redraw!
+  set noreadonly ls&
+  bwipe!
+endfunc
+
 
 " vim: shiftwidth=2 sts=2 expandtab
diff --git a/src/version.c b/src/version.c
--- a/src/version.c
+++ b/src/version.c
@@ -751,6 +751,8 @@ static char *(features[]) =
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    4074,
+/**/
     4073,
 /**/
     4072,