Merge remote-tracking branch 'vim/master'

Author: ychin

CONTRIBUTING.md

@@ -21,9 +21,9 @@ maillist is also fine.
 
 Please use the GitHub issues only for actual issues. If you are not 100% sure
 that your problem is a Vim issue, please first discuss this on the Vim user
-maillist.  Try reproducing the problem without any plugins or settings:
+maillist.  Try reproducing the problem without any of your plugins or settings:
 
-    vim -N -u NONE
+    vim --clean
 
 If you report an issue, please describe exactly how to reproduce it.
 For example, don't say "insert some text" but say what you did exactly:

Filelist

@@ -450,7 +450,6 @@ SRC_DOS =	\
 		src/iscygpty.h \
 		src/iid_ole.c \
 		src/os_dos.h \
-		src/os_w32dll.c \
 		src/os_w32exe.c \
 		src/os_win32.c \
 		src/os_mswin.c \
@@ -509,13 +508,14 @@ SRC_DOS_BIN =	\
 		src/vim.tlb \
 		src/xpm/COPYRIGHT \
 		src/xpm/README.txt \
+		src/xpm/arm64/lib-vc14/libXpm.lib \
 		src/xpm/include/*.h \
+		src/xpm/x64/lib-vc14/libXpm.lib \
 		src/xpm/x64/lib/libXpm.a \
 		src/xpm/x64/lib/libXpm.lib \
-		src/xpm/x64/lib-vc14/libXpm.lib \
+		src/xpm/x86/lib-vc14/libXpm.lib \
 		src/xpm/x86/lib/libXpm.a \
 		src/xpm/x86/lib/libXpm.lib \
-		src/xpm/x86/lib-vc14/libXpm.lib \
 		nsis/icons.zip \
 
 # source files for Amiga, DOS, etc. (also in the extra archive)

runtime/doc/autocmd.txt

@@ -1,4 +1,4 @@
-*autocmd.txt*   For Vim version 8.1.  Last change: 2019 Mar 13
+*autocmd.txt*   For Vim version 8.1.  Last change: 2019 Apr 04
 
 
 		  VIM REFERENCE MANUAL    by Bram Moolenaar
@@ -52,15 +52,21 @@ effects.  Be careful not to destroy your text.
 2. Defining autocommands				*autocmd-define*
 
 							*:au* *:autocmd*
-:au[tocmd] [group] {event} {pat} [nested] {cmd}
+:au[tocmd] [group] {event} {pat} [++once] [++nested] {cmd}
 			Add {cmd} to the list of commands that Vim will
 			execute automatically on {event} for a file matching
 			{pat} |autocmd-patterns|.
 			Note: A quote character is seen as argument to the
 			:autocmd and won't start a comment.
 			Vim always adds the {cmd} after existing autocommands,
 			so that the autocommands execute in the order in which
-			they were given.  See |autocmd-nested| for [nested].
+			they were given.
+			See |autocmd-nested| for [++nested].  "nested"
+			(without the ++) can also be used, for backwards
+			compatibility.
+							*autocmd-once*
+			If [++once] is supplied the command is executed once,
+			then removed ("one shot").
 
 The special pattern <buffer> or <buffer=N> defines a buffer-local autocommand.
 See |autocmd-buflocal|.
@@ -128,10 +134,11 @@ prompt.  When one command outputs two messages this can happen anyway.
 ==============================================================================
 3. Removing autocommands				*autocmd-remove*
 
-:au[tocmd]! [group] {event} {pat} [nested] {cmd}
+:au[tocmd]! [group] {event} {pat} [++once] [++nested] {cmd}
 			Remove all autocommands associated with {event} and
-			{pat}, and add the command {cmd}.  See
-			|autocmd-nested| for [nested].
+			{pat}, and add the command {cmd}.
+			See |autocmd-once| for [++once].
+			See |autocmd-nested| for [++nested].
 
 :au[tocmd]! [group] {event} {pat}
 			Remove all autocommands associated with {event} and
@@ -1473,7 +1480,7 @@ By default, autocommands do not nest.  For example, if you use ":e" or ":w" in
 an autocommand, Vim does not execute the BufRead and BufWrite autocommands for
 those commands.  If you do want this, use the "nested" flag for those commands
 in which you want nesting.  For example: >
-  :autocmd FileChangedShell *.c nested e!
+  :autocmd FileChangedShell *.c ++nested e!
 The nesting is limited to 10 levels to get out of recursive loops.
 
 It's possible to use the ":au" command in an autocommand.  This can be a