diff --git a/runtime/doc/builtin.txt b/runtime/doc/builtin.txt
index 922a2da..9e5b6f2 100644
--- a/runtime/doc/builtin.txt
+++ b/runtime/doc/builtin.txt
@@ -3230,7 +3230,8 @@
 		arglist		file names in argument list
 		augroup		autocmd groups
 		buffer		buffer names
-		behave		:behave suboptions
+		behave		|:behave| suboptions
+		breakpoint	|:breakadd| and |:breakdel| suboptions
 		color		color schemes
 		command		Ex command
 		cmdline		|cmdline-completion| result
@@ -3247,7 +3248,7 @@
 		function	function name
 		help		help subjects
 		highlight	highlight groups
-		history		:history suboptions
+		history		|:history| suboptions
 		locale		locale names (as output of locale -a)
 		mapclear	buffer argument
 		mapping		mapping name
diff --git a/src/cmdexpand.c b/src/cmdexpand.c
index b261415..7ab1bba 100644
--- a/src/cmdexpand.c
+++ b/src/cmdexpand.c
@@ -1602,6 +1602,71 @@
 }
 #endif
 
+#ifdef FEAT_EVAL
+static enum
+{
+    EXP_BREAKPT_ADD,	// expand ":breakadd" sub-commands
+    EXP_BREAKPT_DEL	// expand ":breakdel" sub-commands
+} breakpt_expand_what;
+
+/*
+ * Set the completion context for the :breakadd command. Always returns NULL.
+ */
+    static char_u *
+set_context_in_breakadd_cmd(expand_T *xp, char_u *arg, cmdidx_T cmdidx)
+{
+    char_u *p;
+    char_u *subcmd_start;
+
+    xp->xp_context = EXPAND_BREAKPOINT;
+    xp->xp_pattern = arg;
+
+    if (cmdidx == CMD_breakadd)
+	breakpt_expand_what = EXP_BREAKPT_ADD;
+    else
+	breakpt_expand_what = EXP_BREAKPT_DEL;
+
+    p = skipwhite(arg);
+    if (*p == NUL)
+	return NULL;
+    subcmd_start = p;
+
+    if (STRNCMP("file ", p, 5) == 0 ||
+	    STRNCMP("func ", p, 5) == 0)
+    {
+	// :breakadd file [lnum] <filename>
+	// :breakadd func [lnum] <funcname>
+	p += 4;
+	p = skipwhite(p);
+
+	// skip line number (if specified)
+	if (VIM_ISDIGIT(*p))
+	{
+	    p = skipdigits(p);
+	    if (*p != ' ')
+	    {
+		xp->xp_context = EXPAND_NOTHING;
+		return NULL;
+	    }
+	    p = skipwhite(p);
+	}
+	if (STRNCMP("file", subcmd_start, 4) == 0)
+	    xp->xp_context = EXPAND_FILES;
+	else
+	    xp->xp_context = EXPAND_USER_FUNC;
+	xp->xp_pattern = p;
+    }
+    else if (STRNCMP("expr ", p, 5) == 0)
+    {
+	// :breakadd expr <expression>
+	xp->xp_context = EXPAND_EXPRESSION;
+	xp->xp_pattern = skipwhite(p + 5);
+    }
+
+    return NULL;
+}
+#endif
+
 /*
  * Set the completion context in 'xp' for command 'cmd' with index 'cmdidx'.
  * The argument to the command is 'arg' and the argument flags is 'argt'.
@@ -1958,6 +2023,12 @@
 	    xp->xp_pattern = arg;
 	    break;
 
+#ifdef FEAT_EVAL
+	case CMD_breakadd:
+	case CMD_breakdel:
+	    return set_context_in_breakadd_cmd(xp, arg, cmdidx);
+#endif
+
 	default:
 	    break;
     }
@@ -2348,6 +2419,31 @@
     return NULL;
 }
 
+# ifdef FEAT_EVAL
+/*
+ * Function given to ExpandGeneric() to obtain the possible arguments of the
+ * ":breakadd {expr, file, func, here}" command.
+ * ":breakdel {func, file, here}" command.
+ */
+    static char_u *
+get_breakadd_arg(expand_T *xp UNUSED, int idx)
+{
+    char *opts[] = {"expr", "file", "func", "here"};
+
+    if (idx >=0 && idx <= 3)
+    {
+	if (breakpt_expand_what == EXP_BREAKPT_ADD)
+	    return (char_u *)opts[idx];
+	else
+	{
+	    if (idx <= 2)
+		return (char_u *)opts[idx + 1];
+	}
+    }
+    return NULL;
+}
+#endif
+
 /*
  * Function given to ExpandGeneric() to obtain the possible arguments of the
  * ":messages {clear}" command.
@@ -2397,42 +2493,45 @@
 	{EXPAND_USER_CMD_FLAGS, get_user_cmd_flags, FALSE, TRUE},
 	{EXPAND_USER_NARGS, get_user_cmd_nargs, FALSE, TRUE},
 	{EXPAND_USER_COMPLETE, get_user_cmd_complete, FALSE, TRUE},
-# ifdef FEAT_EVAL
+#ifdef FEAT_EVAL
 	{EXPAND_USER_VARS, get_user_var_name, FALSE, TRUE},
 	{EXPAND_FUNCTIONS, get_function_name, FALSE, TRUE},
 	{EXPAND_USER_FUNC, get_user_func_name, FALSE, TRUE},
 	{EXPAND_DISASSEMBLE, get_disassemble_argument, FALSE, TRUE},
 	{EXPAND_EXPRESSION, get_expr_name, FALSE, TRUE},
-# endif
-# ifdef FEAT_MENU
+#endif
+#ifdef FEAT_MENU
 	{EXPAND_MENUS, get_menu_name, FALSE, TRUE},
 	{EXPAND_MENUNAMES, get_menu_names, FALSE, TRUE},
-# endif
-# ifdef FEAT_SYN_HL
+#endif
+#ifdef FEAT_SYN_HL
 	{EXPAND_SYNTAX, get_syntax_name, TRUE, TRUE},
-# endif
-# ifdef FEAT_PROFILE
+#endif
+#ifdef FEAT_PROFILE
 	{EXPAND_SYNTIME, get_syntime_arg, TRUE, TRUE},
-# endif
+#endif
 	{EXPAND_HIGHLIGHT, get_highlight_name, TRUE, TRUE},
 	{EXPAND_EVENTS, get_event_name, TRUE, FALSE},
 	{EXPAND_AUGROUP, get_augroup_name, TRUE, FALSE},
-# ifdef FEAT_CSCOPE
+#ifdef FEAT_CSCOPE
 	{EXPAND_CSCOPE, get_cscope_name, TRUE, TRUE},
-# endif
-# ifdef FEAT_SIGNS
+#endif
+#ifdef FEAT_SIGNS
 	{EXPAND_SIGN, get_sign_name, TRUE, TRUE},
-# endif
-# ifdef FEAT_PROFILE
+#endif
+#ifdef FEAT_PROFILE
 	{EXPAND_PROFILE, get_profile_name, TRUE, TRUE},
-# endif
-# if defined(HAVE_LOCALE_H) || defined(X_LOCALE)
+#endif
+#if defined(HAVE_LOCALE_H) || defined(X_LOCALE)
 	{EXPAND_LANGUAGE, get_lang_arg, TRUE, FALSE},
 	{EXPAND_LOCALES, get_locales, TRUE, FALSE},
-# endif
+#endif
 	{EXPAND_ENV_VARS, get_env_name, TRUE, TRUE},
 	{EXPAND_USER, get_users, TRUE, FALSE},
 	{EXPAND_ARGLIST, get_arglist_name, TRUE, FALSE},
+#ifdef FEAT_EVAL
+	{EXPAND_BREAKPOINT, get_breakadd_arg, TRUE, TRUE},
+#endif
     };
     int	i;
     int ret = FAIL;
diff --git a/src/spellsuggest.c b/src/spellsuggest.c
index 3be917f..1e38966 100644
--- a/src/spellsuggest.c
+++ b/src/spellsuggest.c
@@ -508,7 +508,7 @@
 	end_visual_mode();
 	// make sure we don't include the NUL at the end of the line
 	line = ml_get_curline();
-	if (badlen > STRLEN(line) - curwin->w_cursor.col)
+	if (badlen > (int)STRLEN(line) - (int)curwin->w_cursor.col)
 	    badlen = STRLEN(line) - curwin->w_cursor.col;
     }
     // Find the start of the badly spelled word.
diff --git a/src/testdir/test_cmdline.vim b/src/testdir/test_cmdline.vim
index c354fa1..528668e 100644
--- a/src/testdir/test_cmdline.vim
+++ b/src/testdir/test_cmdline.vim
@@ -3007,4 +3007,158 @@
   set wildoptions&
 endfunc
 
+" Test for :breakadd argument completion
+func Test_cmdline_complete_breakadd()
+  call feedkeys(":breakadd \<C-A>\<C-B>\"\<CR>", 'tx')
+  call assert_equal("\"breakadd expr file func here", @:)
+  call feedkeys(":breakadd \<Tab>\<C-B>\"\<CR>", 'tx')
+  call assert_equal("\"breakadd expr", @:)
+  call feedkeys(":breakadd    \<Tab>\<C-B>\"\<CR>", 'tx')
+  call assert_equal("\"breakadd    expr", @:)
+  call feedkeys(":breakadd he\<Tab>\<C-B>\"\<CR>", 'tx')
+  call assert_equal("\"breakadd here", @:)
+  call feedkeys(":breakadd    he\<Tab>\<C-B>\"\<CR>", 'tx')
+  call assert_equal("\"breakadd    here", @:)
+  call feedkeys(":breakadd abc\<Tab>\<C-B>\"\<CR>", 'tx')
+  call assert_equal("\"breakadd abc", @:)
+  call assert_equal(['expr', 'file', 'func', 'here'], getcompletion('', 'breakpoint'))
+  let l = getcompletion('not', 'breakpoint')
+  call assert_equal([], l)
+
+  " Test for :breakadd file [lnum] <file>
+  call writefile([], 'Xscript')
+  call feedkeys(":breakadd file Xsc\<Tab>\<C-B>\"\<CR>", 'tx')
+  call assert_equal("\"breakadd file Xscript", @:)
+  call feedkeys(":breakadd   file   Xsc\<Tab>\<C-B>\"\<CR>", 'tx')
+  call assert_equal("\"breakadd   file   Xscript", @:)
+  call feedkeys(":breakadd file 20 Xsc\<Tab>\<C-B>\"\<CR>", 'tx')
+  call assert_equal("\"breakadd file 20 Xscript", @:)
+  call feedkeys(":breakadd   file   20   Xsc\<Tab>\<C-B>\"\<CR>", 'tx')
+  call assert_equal("\"breakadd   file   20   Xscript", @:)
+  call feedkeys(":breakadd file 20x Xsc\<Tab>\<C-B>\"\<CR>", 'tx')
+  call assert_equal("\"breakadd file 20x Xsc\t", @:)
+  call feedkeys(":breakadd file 20\<Tab>\<C-B>\"\<CR>", 'tx')
+  call assert_equal("\"breakadd file 20\t", @:)
+  call feedkeys(":breakadd file 20x\<Tab>\<C-B>\"\<CR>", 'tx')
+  call assert_equal("\"breakadd file 20x\t", @:)
+  call feedkeys(":breakadd file Xscript  \<Tab>\<C-B>\"\<CR>", 'tx')
+  call assert_equal("\"breakadd file Xscript  ", @:)
+  call feedkeys(":breakadd file X1B2C3\<Tab>\<C-B>\"\<CR>", 'tx')
+  call assert_equal("\"breakadd file X1B2C3", @:)
+  call delete('Xscript')
+
+  " Test for :breakadd func [lnum] <function>
+  func Xbreak_func()
+  endfunc
+  call feedkeys(":breakadd func Xbr\<Tab>\<C-B>\"\<CR>", 'tx')
+  call assert_equal("\"breakadd func Xbreak_func", @:)
+  call feedkeys(":breakadd    func    Xbr\<Tab>\<C-B>\"\<CR>", 'tx')
+  call assert_equal("\"breakadd    func    Xbreak_func", @:)
+  call feedkeys(":breakadd func 20 Xbr\<Tab>\<C-B>\"\<CR>", 'tx')
+  call assert_equal("\"breakadd func 20 Xbreak_func", @:)
+  call feedkeys(":breakadd   func   20   Xbr\<Tab>\<C-B>\"\<CR>", 'tx')
+  call assert_equal("\"breakadd   func   20   Xbreak_func", @:)
+  call feedkeys(":breakadd func 20x Xbr\<Tab>\<C-B>\"\<CR>", 'tx')
+  call assert_equal("\"breakadd func 20x Xbr\t", @:)
+  call feedkeys(":breakadd func 20\<Tab>\<C-B>\"\<CR>", 'tx')
+  call assert_equal("\"breakadd func 20\t", @:)
+  call feedkeys(":breakadd func 20x\<Tab>\<C-B>\"\<CR>", 'tx')
+  call assert_equal("\"breakadd func 20x\t", @:)
+  call feedkeys(":breakadd func Xbreak_func  \<Tab>\<C-B>\"\<CR>", 'tx')
+  call assert_equal("\"breakadd func Xbreak_func  ", @:)
+  call feedkeys(":breakadd func X1B2C3\<Tab>\<C-B>\"\<CR>", 'tx')
+  call assert_equal("\"breakadd func X1B2C3", @:)
+  delfunc Xbreak_func
+
+  " Test for :breakadd expr <expression>
+  let g:Xtest_var = 10
+  call feedkeys(":breakadd expr Xtest\<Tab>\<C-B>\"\<CR>", 'tx')
+  call assert_equal("\"breakadd expr Xtest_var", @:)
+  call feedkeys(":breakadd    expr    Xtest\<Tab>\<C-B>\"\<CR>", 'tx')
+  call assert_equal("\"breakadd    expr    Xtest_var", @:)
+  call feedkeys(":breakadd expr Xtest_var  \<Tab>\<C-B>\"\<CR>", 'tx')
+  call assert_equal("\"breakadd expr Xtest_var  ", @:)
+  call feedkeys(":breakadd expr X1B2C3\<Tab>\<C-B>\"\<CR>", 'tx')
+  call assert_equal("\"breakadd expr X1B2C3", @:)
+  unlet g:Xtest_var
+
+  " Test for :breakadd here
+  call feedkeys(":breakadd here Xtest\<Tab>\<C-B>\"\<CR>", 'tx')
+  call assert_equal("\"breakadd here Xtest", @:)
+  call feedkeys(":breakadd   here   Xtest\<Tab>\<C-B>\"\<CR>", 'tx')
+  call assert_equal("\"breakadd   here   Xtest", @:)
+  call feedkeys(":breakadd here \<Tab>\<C-B>\"\<CR>", 'tx')
+  call assert_equal("\"breakadd here ", @:)
+endfunc
+
+" Test for :breakdel argument completion
+func Test_cmdline_complete_breakdel()
+  call feedkeys(":breakdel \<C-A>\<C-B>\"\<CR>", 'tx')
+  call assert_equal("\"breakdel file func here", @:)
+  call feedkeys(":breakdel \<Tab>\<C-B>\"\<CR>", 'tx')
+  call assert_equal("\"breakdel file", @:)
+  call feedkeys(":breakdel    \<Tab>\<C-B>\"\<CR>", 'tx')
+  call assert_equal("\"breakdel    file", @:)
+  call feedkeys(":breakdel he\<Tab>\<C-B>\"\<CR>", 'tx')
+  call assert_equal("\"breakdel here", @:)
+  call feedkeys(":breakdel    he\<Tab>\<C-B>\"\<CR>", 'tx')
+  call assert_equal("\"breakdel    here", @:)
+  call feedkeys(":breakdel abc\<Tab>\<C-B>\"\<CR>", 'tx')
+  call assert_equal("\"breakdel abc", @:)
+
+  " Test for :breakdel file [lnum] <file>
+  call writefile([], 'Xscript')
+  call feedkeys(":breakdel file Xsc\<Tab>\<C-B>\"\<CR>", 'tx')
+  call assert_equal("\"breakdel file Xscript", @:)
+  call feedkeys(":breakdel   file   Xsc\<Tab>\<C-B>\"\<CR>", 'tx')
+  call assert_equal("\"breakdel   file   Xscript", @:)
+  call feedkeys(":breakdel file 20 Xsc\<Tab>\<C-B>\"\<CR>", 'tx')
+  call assert_equal("\"breakdel file 20 Xscript", @:)
+  call feedkeys(":breakdel   file   20   Xsc\<Tab>\<C-B>\"\<CR>", 'tx')
+  call assert_equal("\"breakdel   file   20   Xscript", @:)
+  call feedkeys(":breakdel file 20x Xsc\<Tab>\<C-B>\"\<CR>", 'tx')
+  call assert_equal("\"breakdel file 20x Xsc\t", @:)
+  call feedkeys(":breakdel file 20\<Tab>\<C-B>\"\<CR>", 'tx')
+  call assert_equal("\"breakdel file 20\t", @:)
+  call feedkeys(":breakdel file 20x\<Tab>\<C-B>\"\<CR>", 'tx')
+  call assert_equal("\"breakdel file 20x\t", @:)
+  call feedkeys(":breakdel file Xscript  \<Tab>\<C-B>\"\<CR>", 'tx')
+  call assert_equal("\"breakdel file Xscript  ", @:)
+  call feedkeys(":breakdel file X1B2C3\<Tab>\<C-B>\"\<CR>", 'tx')
+  call assert_equal("\"breakdel file X1B2C3", @:)
+  call delete('Xscript')
+
+  " Test for :breakdel func [lnum] <function>
+  func Xbreak_func()
+  endfunc
+  call feedkeys(":breakdel func Xbr\<Tab>\<C-B>\"\<CR>", 'tx')
+  call assert_equal("\"breakdel func Xbreak_func", @:)
+  call feedkeys(":breakdel   func   Xbr\<Tab>\<C-B>\"\<CR>", 'tx')
+  call assert_equal("\"breakdel   func   Xbreak_func", @:)
+  call feedkeys(":breakdel func 20 Xbr\<Tab>\<C-B>\"\<CR>", 'tx')
+  call assert_equal("\"breakdel func 20 Xbreak_func", @:)
+  call feedkeys(":breakdel   func   20   Xbr\<Tab>\<C-B>\"\<CR>", 'tx')
+  call assert_equal("\"breakdel   func   20   Xbreak_func", @:)
+  call feedkeys(":breakdel func 20x Xbr\<Tab>\<C-B>\"\<CR>", 'tx')
+  call assert_equal("\"breakdel func 20x Xbr\t", @:)
+  call feedkeys(":breakdel func 20\<Tab>\<C-B>\"\<CR>", 'tx')
+  call assert_equal("\"breakdel func 20\t", @:)
+  call feedkeys(":breakdel func 20x\<Tab>\<C-B>\"\<CR>", 'tx')
+  call assert_equal("\"breakdel func 20x\t", @:)
+  call feedkeys(":breakdel func Xbreak_func  \<Tab>\<C-B>\"\<CR>", 'tx')
+  call assert_equal("\"breakdel func Xbreak_func  ", @:)
+  call feedkeys(":breakdel func X1B2C3\<Tab>\<C-B>\"\<CR>", 'tx')
+  call assert_equal("\"breakdel func X1B2C3", @:)
+  delfunc Xbreak_func
+
+  " Test for :breakdel here
+  call feedkeys(":breakdel here Xtest\<Tab>\<C-B>\"\<CR>", 'tx')
+  call assert_equal("\"breakdel here Xtest", @:)
+  call feedkeys(":breakdel   here   Xtest\<Tab>\<C-B>\"\<CR>", 'tx')
+  call assert_equal("\"breakdel   here   Xtest", @:)
+  call feedkeys(":breakdel here \<Tab>\<C-B>\"\<CR>", 'tx')
+  call assert_equal("\"breakdel here ", @:)
+
+endfunc
+
 " vim: shiftwidth=2 sts=2 expandtab
diff --git a/src/testdir/test_writefile.vim b/src/testdir/test_writefile.vim
index a8204ef..592ab88 100644
--- a/src/testdir/test_writefile.vim
+++ b/src/testdir/test_writefile.vim
@@ -890,6 +890,9 @@
 " link to the original file. The backup file should not be modified.
 func Test_write_backup_symlink()
   CheckUnix
+  call mkdir('Xbackup')
+  let save_backupdir = &backupdir
+  set backupdir=.,./Xbackup
   call writefile(['1111'], 'Xfile')
   silent !ln -s Xfile Xfile.bak
 
@@ -898,11 +901,18 @@
   write
   call assert_equal('link', getftype('Xfile.bak'))
   call assert_equal('Xfile', resolve('Xfile.bak'))
+  " backup file should be created in the 'backup' directory
+  if !has('bsd')
+    " This check fails on FreeBSD
+    call assert_true(filereadable('./Xbackup/Xfile.bak'))
+  endif
   set backup& backupcopy& backupext&
-  close
+  %bw
 
   call delete('Xfile')
   call delete('Xfile.bak')
+  call delete('Xbackup', 'rf')
+  let &backupdir = save_backupdir
 endfunc
 
 " Test for ':write ++bin' and ':write ++nobin'
diff --git a/src/usercmd.c b/src/usercmd.c
index 1ff4d0d..70dbbb0 100644
--- a/src/usercmd.c
+++ b/src/usercmd.c
@@ -90,6 +90,9 @@
     {EXPAND_TAGS_LISTFILES, "tag_listfiles"},
     {EXPAND_USER, "user"},
     {EXPAND_USER_VARS, "var"},
+#if defined(FEAT_EVAL)
+    {EXPAND_BREAKPOINT, "breakpoint"},
+#endif
     {0, NULL}
 };
 
diff --git a/src/version.c b/src/version.c
index bf3116e..2ea5965 100644
--- a/src/version.c
+++ b/src/version.c
@@ -751,6 +751,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    4565,
+/**/
     4564,
 /**/
     4563,
diff --git a/src/vim.h b/src/vim.h
index 816cfe8..4f80a09 100644
--- a/src/vim.h
+++ b/src/vim.h
@@ -801,6 +801,7 @@
 #define EXPAND_ARGLIST		48
 #define EXPAND_DIFF_BUFFERS	49
 #define EXPAND_DISASSEMBLE	50
+#define EXPAND_BREAKPOINT	51
 
 // Values for exmode_active (0 is no exmode)
 #define EXMODE_NORMAL		1