diff --git a/runtime/doc/debugger.txt b/runtime/doc/debugger.txt
index 47c017d..a728b8a 100644
--- a/runtime/doc/debugger.txt
+++ b/runtime/doc/debugger.txt
@@ -114,7 +114,7 @@
 
 The debugger features were added for use with Sun's Visual WorkShop Integrated
 Programming Environment (ipe).  However, they were done in as generic a manner
-as possible so that integration with other debuggers could also these
+as possible so that integration with other debuggers could also use these
 features.
 
 The following compile time preprocessor variables control the features:
diff --git a/runtime/doc/eval.txt b/runtime/doc/eval.txt
index d04d959..b580f2f 100644
--- a/runtime/doc/eval.txt
+++ b/runtime/doc/eval.txt
@@ -1,4 +1,4 @@
-*eval.txt*	For Vim version 8.2.  Last change: 2020 Jan 06
+*eval.txt*	For Vim version 8.2.  Last change: 2020 Jan 19
 
 
 		  VIM REFERENCE MANUAL	  by Bram Moolenaar
@@ -10630,7 +10630,7 @@
 <
 
 							*feature-list*
-There are four types of features:
+There are three types of features:
 1.  Features that are only supported when they have been enabled when Vim
     was compiled |+feature-list|.  Example: >
 	:if has("cindent")
diff --git a/runtime/doc/options.txt b/runtime/doc/options.txt
index 5ee2ce1..1393e62 100644
--- a/runtime/doc/options.txt
+++ b/runtime/doc/options.txt
@@ -1,4 +1,4 @@
-*options.txt*	For Vim version 8.2.  Last change: 2020 Jan 01
+*options.txt*	For Vim version 8.2.  Last change: 2020 Jan 18
 
 
 		  VIM REFERENCE MANUAL	  by Bram Moolenaar
@@ -517,10 +517,11 @@
 
 The second form (this is compatible with some versions of Vi):
 
-	[text]{white}{vi:|vim:|Vim:|ex:}[white]se[t] {options}:[text]
+	[text{white}]{vi:|vim:|Vim:|ex:}[white]se[t] {options}:[text]
 
-[text]			any text or empty
-{white}			at least one blank character (<Space> or <Tab>)
+[text{white}]		empty or any text followed by at least one blank
+			character (<Space> or <Tab>); "ex:" always requires at
+			least one blank character
 {vi:|vim:|Vim:|ex:}	the string "vi:", "vim:", "Vim:" or "ex:"
 [white]			optional white space
 se[t]			the string "set " or "se " (note the space); When
@@ -6752,8 +6753,7 @@
 	option is on, dots in file names are replaced with underscores when
 	adding an extension (".~" or ".swp").  This option is useful
 	when editing files on an MS-DOS compatible filesystem, e.g., messydos
-	or crossdos.  When running the Win32 GUI version under Win32s, this
-	option is always on by default.
+	or crossdos.
 
 						*'showbreak'* *'sbr'* *E595*
 'showbreak' 'sbr'	string	(default "")
@@ -7288,8 +7288,8 @@
 <	Beware that an expression is evaluated each and every time the status
 	line is displayed.
 				*stl-%{* *g:actual_curbuf* *g:actual_curwin*
-	While evaluationg %{} the current buffer and current window will be
-	set temporarily to that of the window (and buffer) whose statusline is
+	While evaluating %{} the current buffer and current window will be set
+	temporarily to that of the window (and buffer) whose statusline is
 	currently being drawn.  The expression will evaluate in this context.
 	The variable "g:actual_curbuf" is set to the `bufnr()` number of the
 	real current buffer and "g:actual_curwin" to the |window-ID| of the
diff --git a/runtime/doc/os_dos.txt b/runtime/doc/os_dos.txt
index bc883c8..925c7e0 100644
--- a/runtime/doc/os_dos.txt
+++ b/runtime/doc/os_dos.txt
@@ -52,12 +52,18 @@
 
 See |$VIM| and |$VIMRUNTIME| for more information.
 
-Under Windows 95, you can set $VIM in your C:\autoexec.bat file.  For
-example: >
-  set VIM=D:\vim
-Under Windows NT, you can set environment variables for each user separately
-under "Start/Settings/Control Panel->System", or through the properties in the
-menu of "My Computer", under the Environment Tab.
+You can set environment variables for each user separately through the
+System Properties dialog box.  The steps to do that:
+1. Type Windows Key + R to open the "Run" dialog box.
+2. Enter "sysdm.cpl" and press the "OK" button.  The "System Properties"
+   dialog box will open.
+3. Select the "Advanced" tab and press the "Environment Variables..." button.
+   The "Environment Variables" dialog box will open.
+4. Select an existing variable in the "User variables" list and press the
+   "Edit..." button to edit it.  Or press the "New..." button to add a new
+   variable.
+5. After you finished editing variables, press the "OK" button to save the
+   changes.
 
 ==============================================================================
 2. Using backslashes					*dos-backslash*
diff --git a/runtime/doc/quickfix.txt b/runtime/doc/quickfix.txt
index 5fb8c51..7f7f10f 100644
--- a/runtime/doc/quickfix.txt
+++ b/runtime/doc/quickfix.txt
@@ -236,8 +236,7 @@
 			e.g., a compiler will not compile the same file again,
 			`git commit` will abort the committing process, `fc`
 			(built-in for shells like bash and zsh) will not
-			execute the command, etc.  will not compile the same
-			file again.
+			execute the command, etc.
 			{N} can also be zero, in which case Vim exits
 			normally.
 			WARNING: All changes in files are lost!  Also when the
@@ -1108,7 +1107,7 @@
 			allowed with |:bufdo|.
 			An example that uses the argument list and avoids
 			errors for files without matches: >
-                                :silent argdo try
+				:silent argdo try
 				  \ | grepadd! something %
 				  \ | catch /E480:/
 				  \ | endtry"
@@ -1311,7 +1310,7 @@
 b:tex_ignore_makefile or g:tex_ignore_makefile variable (they are checked for
 existence only).
 
-If the compiler chose not to use make, it need to choose a right program for
+If the compiler chose not to use make, it needs to choose a right program for
 processing your input.  If b:tex_flavor or g:tex_flavor (in this precedence)
 variable exists, it defines TeX flavor for :make (actually, this is the name
 of executed command), and if both variables do not exist, it defaults to
diff --git a/runtime/doc/quickref.txt b/runtime/doc/quickref.txt
index 14c0e05..9573890 100644
--- a/runtime/doc/quickref.txt
+++ b/runtime/doc/quickref.txt
@@ -1,4 +1,4 @@
-*quickref.txt*  For Vim version 8.2.  Last change: 2019 Dec 07
+*quickref.txt*  For Vim version 8.2.  Last change: 2020 Jan 17
 
 
 		  VIM REFERENCE MANUAL    by Bram Moolenaar
@@ -1057,8 +1057,7 @@
 				   search
 |<Del>|		   <Del>	while entering a count: delete last character
 |:version|	:ve[rsion]	show version information
-|:mode|		:mode N		MS-Windows: set screen mode to N (number, C80,
-				C4350, etc.)
+|:mode|		:mode N		set screen mode to N (obsolete)
 |:normal|	:norm[al][!] {commands}
 				execute Normal mode commands
 |Q|		   Q		switch to "Ex" mode
diff --git a/runtime/doc/starting.txt b/runtime/doc/starting.txt
index 07f7dae..d542787 100644
--- a/runtime/doc/starting.txt
+++ b/runtime/doc/starting.txt
@@ -1,4 +1,4 @@
-*starting.txt*  For Vim version 8.2.  Last change: 2019 Dec 11
+*starting.txt*  For Vim version 8.2.  Last change: 2020 Jan 20
 
 
 		  VIM REFERENCE MANUAL    by Bram Moolenaar
@@ -1570,8 +1570,8 @@
 VIMINFO FILE NAME					*viminfo-file-name*
 
 - The default name of the viminfo file is "$HOME/.viminfo" for Unix,
-  "s:.viminfo" for Amiga, "$HOME\_viminfo" for Win32.  For the last two, when
-  $HOME is not set, "$VIM\_viminfo" is used.  When $VIM is also not set,
+  "s:.viminfo" for Amiga, "$HOME\_viminfo" for Win32.  For Win32, when $HOME
+  is not set, "$VIM\_viminfo" is used.  When $VIM is also not set,
   "c:\_viminfo" is used.
 - The 'n' flag in the 'viminfo' option can be used to specify another viminfo
   file name |'viminfo'|.
diff --git a/runtime/doc/syntax.txt b/runtime/doc/syntax.txt
index 0246e7f..28b328b 100644
--- a/runtime/doc/syntax.txt
+++ b/runtime/doc/syntax.txt
@@ -2315,7 +2315,7 @@
 
 PAPP						*papp.vim* *ft-papp-syntax*
 
-The PApp syntax file handles .papp files and, to a lesser extend, .pxml
+The PApp syntax file handles .papp files and, to a lesser extent, .pxml
 and .pxsl files which are all a mixture of perl/xml/html/other using xml
 as the top-level file format.  By default everything inside phtml or pxml
 sections is treated as a string with embedded preprocessor commands.  If
@@ -2687,12 +2687,12 @@
 
 QUAKE						*quake.vim* *ft-quake-syntax*
 
-The Quake syntax definition should work for most any FPS (First Person
-Shooter) based on one of the Quake engines.  However, the command names vary
-a bit between the three games (Quake, Quake 2, and Quake 3 Arena) so the
-syntax definition checks for the existence of three global variables to allow
-users to specify what commands are legal in their files.  The three variables
-can be set for the following effects:
+The Quake syntax definition should work for most FPS (First Person Shooter)
+based on one of the Quake engines.  However, the command names vary a bit
+between the three games (Quake, Quake 2, and Quake 3 Arena) so the syntax
+definition checks for the existence of three global variables to allow users
+to specify what commands are legal in their files.  The three variables can
+be set for the following effects:
 
 set to highlight commands only available in Quake: >
 	:let quake_is_quake1 = 1
@@ -3028,7 +3028,7 @@
 
    ksh: >
 	let g:is_kornshell = 1
-<   posix:  (using this is the nearly the same as setting g:is_kornshell to 1) >
+<   posix:  (using this is nearly the same as setting g:is_kornshell to 1) >
 	let g:is_posix     = 1
 <   bash: >
 	let g:is_bash	   = 1
diff --git a/runtime/doc/todo.txt b/runtime/doc/todo.txt
index 41f9fc0..5c88918 100644
--- a/runtime/doc/todo.txt
+++ b/runtime/doc/todo.txt
@@ -1,4 +1,4 @@
-*todo.txt*      For Vim version 8.2.  Last change: 2020 Jan 13
+*todo.txt*      For Vim version 8.2.  Last change: 2020 Jan 20
 
 
 		  VIM REFERENCE MANUAL	  by Bram Moolenaar
@@ -184,6 +184,8 @@
 goes to any buffer, and then :bnext skips help buffers, since they are
 unlisted. (#4478)
 
+Patch to include reduce() function. (#5481)
+
 Patch to provide search stats in a variable, so that it can be used in the
 statusline. (Fujiwara Takuya, #4446)
 
@@ -192,6 +194,8 @@
 Universal solution to detect if t_RS is working, using cursor position.
 Koichi Iwamoto, #2126
 
+Python 3.8 doesn't work. (Antonios Hadjigeorgalis, #5509)
+
 The :syntax cchar value can only be a single character.  It would be useful to
 support combining characters. (Charles Campbell)  Also #4687
 
@@ -204,6 +208,8 @@
 
 Result of synID() sometimes wrong in help files. (#5252)
 
+Status line is nut updated when splitting windows. (Marcin Szamotulski, #5496)
+
 Problem showing a line if the number column width changes when using "o".
 (Mateusz Morusiewicz, #4245)
 
@@ -1121,6 +1127,7 @@
 
 When 'completeopt' has "noselect" does not insert a newline. (Lifepillar, 2017
 Apr 23, #1653)
+Can 'completeopt' be made buffer-local? (#5487)
 
 Window resizing with 'winfixheight': With a vertical split the height changes
 anyway. (Tommy allen, 2017 Feb 21, #1502)
diff --git a/runtime/doc/usr_11.txt b/runtime/doc/usr_11.txt
index fdbdd19..3aca185 100644
--- a/runtime/doc/usr_11.txt
+++ b/runtime/doc/usr_11.txt
@@ -1,4 +1,4 @@
-*usr_11.txt*	For Vim version 8.2.  Last change: 2019 Apr 28
+*usr_11.txt*	For Vim version 8.2.  Last change: 2020 Jan 17
 
 		     VIM USER MANUAL - by Bram Moolenaar
 
@@ -211,8 +211,11 @@
 - The flag that the file was modified is not set.
 - The process is not running.
 
+You can programatically deal with this situation with the |FileChangedShell|
+autocommand event.
 
-UNREADABLE SWAP FILE
+
+UNREADABLE SWAP FILE ~
 
 Sometimes the line