patch 8.0.1595: no autocommand triggered before exiting

Problem:    No autocommand triggered before exiting.
Solution:   Add the ExitPre autocommand event.

runtime/doc/autocmd.txt

@@ -285,7 +285,8 @@ Name			triggered by ~
 |GUIFailed|		after starting the GUI failed
 |TermResponse|		after the terminal response to |t_RV| is received
 
-|QuitPre|		when using `:quit`, before deciding whether to quit
+|QuitPre|		when using `:quit`, before deciding whether to exit
+|ExitPre|		when using a command that may make Vim exit
 |VimLeavePre|		before exiting Vim, before writing the viminfo file
 |VimLeave|		before exiting Vim, after writing the viminfo file
 
@@ -651,6 +652,11 @@ DirChanged			The working directory has changed in response
 					"auto"   to trigger on 'autochdir'.
 					"drop"	 to trigger on editing a file
 				<afile> is set to the new directory name.
+							*ExitPre*
+ExitPre				When using `:quit`, `:wq` in a way it makes
+				Vim exit, or using `:qall`, just after
+				|QuitPre|.  Can be used to close any
+				non-essential window.
 							*FileChangedShell*
 FileChangedShell		When Vim notices that the modification time of
 				a file has changed since editing started.
@@ -866,6 +872,7 @@ QuitPre				When using `:quit`, `:wq` or `:qall`, before
 				or quits Vim.  Can be used to close any
 				non-essential window if the current window is
 				the last ordinary window.
+				Also see |ExitPre|.
 							*RemoteReply*
 RemoteReply			When a reply from a Vim that functions as
 				server was received |server2client()|.  The

src/Makefile

@@ -2155,6 +2155,7 @@ test_arglist \
 	test_eval_stuff \
 	test_ex_undo \
 	test_ex_z \
+	test_exit \
 	test_exec_while_if \
 	test_execute_func \
 	test_exists \

src/ex_docmd.c

@@ -7187,8 +7187,35 @@ not_exiting(void)
     settmode(TMODE_RAW);
 }
 
+    static int
+before_quit_autocmds(win_T *wp, int quit_all, int forceit)
+{
+    apply_autocmds(EVENT_QUITPRE, NULL, NULL, FALSE, wp->w_buffer);
+
+    /* Bail out when autocommands closed the window.
+     * Refuse to quit when the buffer in the last window is being closed (can
+     * only happen in autocommands). */
+    if (!win_valid(wp)
+	    || curbuf_locked()
+	    || (wp->w_buffer->b_nwindows == 1 && wp->w_buffer->b_locked > 0))
+	return TRUE;
+
+    if (quit_all || (check_more(FALSE, forceit) == OK && only_one_window()))
+    {
+	apply_autocmds(EVENT_EXITPRE, NULL, NULL, FALSE, curbuf);
+	/* Refuse to quit when locked or when the buffer in the last window is
+	 * being closed (can only happen in autocommands). */
+	if (curbuf_locked()
+			  || (curbuf->b_nwindows == 1 && curbuf->b_locked > 0))
+	    return TRUE;
+    }
+
+    return FALSE;
+}
+
 /*
  * ":quit": quit current window, quit Vim if the last window is closed.
+ * ":{nr}quit": quit window {nr}
  */
     static void
 ex_quit(exarg_T *eap)
@@ -7222,12 +7249,9 @@ ex_quit(exarg_T *eap)
     /* Refuse to quit when locked. */
     if (curbuf_locked())
 	return;
-    apply_autocmds(EVENT_QUITPRE, NULL, NULL, FALSE, wp->w_buffer);
-    /* Bail out when autocommands closed the window.
-     * Refuse to quit when the buffer in the last window is being closed (can
-     * only happen in autocommands). */
-    if (!win_valid(wp)
-	    || (wp->w_buffer->b_nwindows == 1 && wp->w_buffer->b_locked > 0))
+
+    /* Trigger QuitPre and maybe ExitPre */
+    if (before_quit_autocmds(wp, FALSE, eap->forceit))
 	return;
 
 #ifdef FEAT_NETBEANS_INTG
@@ -7301,10 +7325,8 @@ ex_quit_all(exarg_T *eap)
 	text_locked_msg();
 	return;
     }
-    apply_autocmds(EVENT_QUITPRE, NULL, NULL, FALSE, curbuf);
-    /* Refuse to quit when locked or when the buffer in the last window is
-     * being closed (can only happen in autocommands). */
-    if (curbuf_locked() || (curbuf->b_nwindows == 1 && curbuf->b_locked > 0))
+
+    if (before_quit_autocmds(curwin, TRUE, eap->forceit))
 	return;
 
     exiting = TRUE;
@@ -7743,7 +7765,7 @@ ex_stop(exarg_T *eap)
 }
 
 /*
- * ":exit", ":xit" and ":wq": Write file and exit Vim.
+ * ":exit", ":xit" and ":wq": Write file and quite the current window.
  */
     static void
 ex_exit(exarg_T *eap)
@@ -7761,10 +7783,8 @@ ex_exit(exarg_T *eap)
 	text_locked_msg();
 	return;
     }
-    apply_autocmds(EVENT_QUITPRE, NULL, NULL, FALSE, curbuf);
-    /* Refuse to quit when locked or when the buffer in the last window is
-     * being closed (can only happen in autocommands). */
-    if (curbuf_locked() || (curbuf->b_nwindows == 1 && curbuf->b_locked > 0))
+
+    if (before_quit_autocmds(curwin, FALSE, eap->forceit))
 	return;
 
     /*

src/fileio.c

@@ -7724,6 +7724,7 @@ static struct event_name
     {"CursorMovedI",	EVENT_CURSORMOVEDI},
     {"DirChanged",	EVENT_DIRCHANGED},
     {"EncodingChanged",	EVENT_ENCODINGCHANGED},
+    {"ExitPre",		EVENT_EXITPRE},
     {"FileEncoding",	EVENT_ENCODINGCHANGED},
     {"FileAppendPost",	EVENT_FILEAPPENDPOST},
     {"FileAppendPre",	EVENT_FILEAPPENDPRE},

src/testdir/Make_all.mak

@@ -97,6 +97,7 @@ NEW_TESTS = test_arabic.res \
 	    test_exec_while_if.res \
 	    test_exists.res \
 	    test_exists_autocmd.res \
+	    test_exit.res \
 	    test_farsi.res \
 	    test_file_size.res \
 	    test_find_complete.res \

src/testdir/test_exit.vim

@@ -0,0 +1,57 @@
+" Tests for exiting Vim.
+
+source shared.vim
+
+func Test_exiting()
+  let after = [
+	\ 'au QuitPre * call writefile(["QuitPre"], "Xtestout")',
+	\ 'au ExitPre * call writefile(["ExitPre"], "Xtestout", "a")',
+	\ 'quit',
+	\ ]
+  if RunVim([], after, '')
+    call assert_equal(['QuitPre', 'ExitPre'], readfile('Xtestout'))
+  endif
+  call delete('Xtestout')
+
+  let after = [
+	\ 'au QuitPre * call writefile(["QuitPre"], "Xtestout")',
+	\ 'au ExitPre * call writefile(["ExitPre"], "Xtestout", "a")',
+	\ 'help',
+	\ 'wincmd w',
+	\ 'quit',
+	\ ]
+  if RunVim([], after, '')
+    call assert_equal(['QuitPre', 'ExitPre'], readfile('Xtestout'))
+  endif
+  call delete('Xtestout')
+
+  let after = [
+	\ 'au QuitPre * call writefile(["QuitPre"], "Xtestout")',
+	\ 'au ExitPre * call writefile(["ExitPre"], "Xtestout", "a")',
+	\ 'split',
+	\ 'new',
+	\ 'qall',
+	\ ]
+  if RunVim([], after, '')
+    call assert_equal(['QuitPre', 'ExitPre'], readfile('Xtestout'))
+  endif
+  call delete('Xtestout')
+
+  let after = [
+	\ 'au QuitPre * call writefile(["QuitPre"], "Xtestout", "a")',
+	\ 'au ExitPre * call writefile(["ExitPre"], "Xtestout", "a")',
+	\ 'augroup nasty',
+	\ '  au ExitPre * split',
+	\ 'augroup END',
+	\ 'quit',
+	\ 'augroup nasty',
+	\ '  au! ExitPre',
+	\ 'augroup END',
+	\ 'quit',
+	\ ]
+  if RunVim([], after, '')
+    call assert_equal(['QuitPre', 'ExitPre', 'QuitPre', 'ExitPre'],
+	  \ readfile('Xtestout'))
+  endif
+  call delete('Xtestout')
+endfunc

src/version.c

@@ -766,6 +766,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    1595,
 /**/
     1594,
 /**/

src/vim.h

@@ -1277,6 +1277,7 @@ enum auto_event
     EVENT_COLORSCHEME,		/* after loading a colorscheme */
     EVENT_COMPLETEDONE,		/* after finishing insert complete */
     EVENT_DIRCHANGED,		/* after changing directory as a result of user cmd */
+    EVENT_EXITPRE,		/* before exiting */
     EVENT_FILEAPPENDPOST,	/* after appending to a file */
     EVENT_FILEAPPENDPRE,	/* before appending to a file */
     EVENT_FILEAPPENDCMD,	/* append to a file using command */