diff --git a/runtime/doc/change.txt b/runtime/doc/change.txt
index 2b4bd18..52a68c4 100644
--- a/runtime/doc/change.txt
+++ b/runtime/doc/change.txt
@@ -1,4 +1,4 @@
-*change.txt*    For Vim version 9.1.  Last change: 2024 Jun 23
+*change.txt*    For Vim version 9.1.  Last change: 2024 Jul 14
 
 
 		  VIM REFERENCE MANUAL    by Bram Moolenaar
@@ -95,13 +95,14 @@
 These commands delete text.  You can repeat them with the `.` command
 (except `:d`) and undo them.  Use Visual mode to delete blocks of text.  See
 |registers| for an explanation of registers.
-
+							*d-special*
 An exception for the d{motion} command: If the motion is not linewise, the
 start and end of the motion are not in the same line, and there are only
 blanks before the start and there are no non-blanks after the end of the
 motion, the delete becomes linewise.  This means that the delete also removes
 the line of blanks that you might expect to remain. Use the |o_v| operator to
-force the motion to be characterwise.
+force the motion to be characterwise or remove the "z" flag from 'cpoptions'
+(see |cpo-z|) to disable this peculiarity.
 
 Trying to delete an empty region of text (e.g., "d0" in the first column)
 is an error when 'cpoptions' includes the 'E' flag.
@@ -251,7 +252,7 @@
 
 If you prefer "cw" to include the space after a word, use this mapping: >
 	:map cw dwi
-Or use "caw" (see |aw|).
+Alternatively use "caw" (see also |aw| and |cpo-z|).
 
 							*:c* *:ch* *:change*
 :{range}c[hange][!]	Replace lines of text with some different text.
diff --git a/runtime/doc/motion.txt b/runtime/doc/motion.txt
index 8b53605..3e45884 100644
--- a/runtime/doc/motion.txt
+++ b/runtime/doc/motion.txt
@@ -1,4 +1,4 @@
-*motion.txt*    For Vim version 9.1.  Last change: 2023 Dec 27
+*motion.txt*    For Vim version 9.1.  Last change: 2024 Jul 14
 
 
 		  VIM REFERENCE MANUAL    by Bram Moolenaar
@@ -434,7 +434,7 @@
 
 Special case: "cw" and "cW" are treated like "ce" and "cE" if the cursor is
 on a non-blank.  This is because "cw" is interpreted as change-word, and a
-word does not include the following white space.
+word does not include the following white space (see also |cw|).
 
 Another special case: When using the "w" motion in combination with an
 operator and the last word moved over is at the end of a line, the end of
diff --git a/runtime/doc/options.txt b/runtime/doc/options.txt
index cb2ddc3..b211dcb 100644
--- a/runtime/doc/options.txt
+++ b/runtime/doc/options.txt
@@ -2486,6 +2486,9 @@
 								*cpo-Z*
 		Z	When using "w!" while the 'readonly' option is set,
 			don't reset 'readonly'.
+								*cpo-z*
+		z	Special casing the "cw" and "d" command (see |cw| and
+			|d-special|).
 								*cpo-!*
 		!	When redoing a filter command, use the last used
 			external command, whatever it was.  Otherwise the last
diff --git a/runtime/doc/tags b/runtime/doc/tags
index 13dd7a3..4e096ec 100644
--- a/runtime/doc/tags
+++ b/runtime/doc/tags
@@ -6672,6 +6672,7 @@
 cpo-w	options.txt	/*cpo-w*
 cpo-x	options.txt	/*cpo-x*
 cpo-y	options.txt	/*cpo-y*
+cpo-z	options.txt	/*cpo-z*
 cpo-{	options.txt	/*cpo-{*
 cpp.vim	syntax.txt	/*cpp.vim*
 crash-recovery	recover.txt	/*crash-recovery*
@@ -6734,6 +6735,7 @@
 cweb.vim	syntax.txt	/*cweb.vim*
 cynlib.vim	syntax.txt	/*cynlib.vim*
 d	change.txt	/*d*
+d-special	change.txt	/*d-special*
 daB	motion.txt	/*daB*
 daW	motion.txt	/*daW*
 dab	motion.txt	/*dab*
diff --git a/runtime/doc/version9.txt b/runtime/doc/version9.txt
index 3b719eb..26df6f2 100644
--- a/runtime/doc/version9.txt
+++ b/runtime/doc/version9.txt
@@ -1,4 +1,4 @@
-*version9.txt*  For Vim version 9.1.  Last change: 2024 Jul 12
+*version9.txt*  For Vim version 9.1.  Last change: 2024 Jul 15
 
 
 		  VIM REFERENCE MANUAL    by Bram Moolenaar
@@ -41586,6 +41586,8 @@
 - allow to complete directories from 'cdpath' for |:cd| and similar commands,
   add the "cd_in_path" completion type for e.g. |:command-complete| and
   |getcompletion()|
+- add 'cpoptions' flag "z" |cpo-z|, to disable some (traditional) vi
+  behaviour/inconsistency (see |d-special| and |cw|).
 
 							*added-9.2*
 Added ~
diff --git a/src/normal.c b/src/normal.c
index 541c8ed..a929dd8 100644
--- a/src/normal.c
+++ b/src/normal.c
@@ -6598,8 +6598,12 @@
 		// "ce" will change until the end of the next word, but "cw"
 		// will change only one character! This is done by setting
 		// flag.
-		cap->oap->inclusive = TRUE;
-		word_end = TRUE;
+		// This can be configured using :set cpo-z
+		if (vim_strchr(p_cpo, CPO_WORD) != NULL)
+		{
+		    cap->oap->inclusive = TRUE;
+		    word_end = TRUE;
+		}
 		flag = TRUE;
 	    }
 	}
diff --git a/src/ops.c b/src/ops.c
index dcb48d3..2de2557 100644
--- a/src/ops.c
+++ b/src/ops.c
@@ -676,6 +676,7 @@
 	    && !oap->block_mode
 	    && oap->line_count > 1
 	    && oap->motion_force == NUL
+	    && (vim_strchr(p_cpo, CPO_WORD) != NULL)
 	    && oap->op_type == OP_DELETE)
     {
 	ptr = ml_get(oap->end.lnum) + oap->end.col;
diff --git a/src/option.h b/src/option.h
index e84f7f9..fba2672 100644
--- a/src/option.h
+++ b/src/option.h
@@ -212,6 +212,7 @@
 #define CPO_REPLCNT	'X'	// "R" with a count only deletes chars once
 #define CPO_YANK	'y'
 #define CPO_KEEPRO	'Z'	// don't reset 'readonly' on ":w!"
+#define CPO_WORD	'z'	// do not special-case word motions cw and dw
 #define CPO_DOLLAR	'$'
 #define CPO_FILTER	'!'
 #define CPO_MATCH	'%'
@@ -231,9 +232,9 @@
 #define CPO_SCOLON	';'	// using "," and ";" will skip over char if
 				// cursor would not move
 // default values for Vim, Vi and POSIX
-#define CPO_VIM		"aABceFs"
-#define CPO_VI		"aAbBcCdDeEfFgHiIjJkKlLmMnoOpPqrRsStuvwWxXyZ$!%*-+<>;"
-#define CPO_ALL		"aAbBcCdDeEfFgHiIjJkKlLmMnoOpPqrRsStuvwWxXyZ$!%*-+<>#{|&/\\.;"
+#define CPO_VIM		"aABceFsz"
+#define CPO_VI		"aAbBcCdDeEfFgHiIjJkKlLmMnoOpPqrRsStuvwWxXyZz$!%*-+<>;"
+#define CPO_ALL		"aAbBcCdDeEfFgHiIjJkKlLmMnoOpPqrRsStuvwWxXyZz$!%*-+<>#{|&/\\.;"
 
 // characters for p_ww option:
 #define WW_ALL		"bshl<>[]~"
diff --git a/src/testdir/test_codestyle.vim b/src/testdir/test_codestyle.vim
index a455264..58ccb6a 100644
--- a/src/testdir/test_codestyle.vim
+++ b/src/testdir/test_codestyle.vim
@@ -68,7 +68,8 @@
         && fname !~ 'test_listchars.vim'
         && fname !~ 'test_visual.vim'
       cursor(1, 1)
-      var lnum = search(fname =~ "test_regexp_latin" ? '[^á] \t' : ' \t')
+      var skip = 'getline(".") =~ "codestyle: ignore"'
+      var lnum = search(fname =~ "test_regexp_latin" ? '[^á] \t' : ' \t', 'W', 0, 0, skip)
       ReportError('testdir/' .. fname, lnum, 'space before Tab')
     endif
 
@@ -155,4 +156,4 @@
 enddef
 
 
-" vim: shiftwidth=2 sts=2 expandtab
+" vim: shiftwidth=2 sts=2 expandtab nofoldenable
diff --git a/src/testdir/test_cpoptions.vim b/src/testdir/test_cpoptions.vim
index 1f7d4af..7bfbcd1 100644
--- a/src/testdir/test_cpoptions.vim
+++ b/src/testdir/test_cpoptions.vim
@@ -912,4 +912,49 @@
   let &cpo = save_cpo
 endfunc
 
+" Test for the 'z' flag in 'cpo' (make cw and dw work similar and avoid
+" inconsistencies, see :h cpo-z)
+func Test_cpo_z()
+  let save_cpo = &cpo
+  new
+  " Test 1: dw behaves differently from cw
+  call setline(1, ['foo bar baz', 'one two three'])
+  call cursor(1, 1)
+  " dw does not delete the whitespace after the word
+  norm! wcwanother
+  set cpo-=z
+  " dw deletes the whitespace after the word
+  call cursor(2, 1)
+  norm! wcwfour
+  call assert_equal(['foo another baz', 'one fourthree'], getline(1, '$'))
+  " Test 2: d{motion} becomes linewise :h d-special
+  %d
+  call setline(1, ['one ', '     bar', '    e	        ', 'zwei'])
+  call cursor(2, 1)
+  set cpo+=z
+  " delete operation becomes linewise
+  call feedkeys("fbd/e\\zs\<cr>", 'tnx')
+  call assert_equal(['one ', 'zwei'], getline(1, '$'))
+  %d
+  call setline(1, ['one ', '     bar', '    e	        ', 'zwei'])
+  call cursor(2, 1)
+  call feedkeys("fbd2w", 'tnx')
+  call assert_equal(['one ', 'zwei'], getline(1, '$'))
+
+  " delete operation does not become line wise
+  set cpo-=z
+  call setline(1, ['one ', '     bar', '    e	        ', 'zwei'])
+  call cursor(2, 1)
+  call feedkeys("fbd/e\\zs\<cr>", 'tnx')
+  call assert_equal(['one ', '     	        ', 'zwei'], getline(1, '$')) " codestyle: ignore
+  %d
+  call setline(1, ['one ', '     bar', '    e	        ', 'zwei'])
+  call cursor(2, 1)
+  call feedkeys("fbd2w", 'tnx')
+  call assert_equal(['one ', '     ', 'zwei'], getline(1, '$'))
+
+  " clean up
+  bw!
+  let &cpo = save_cpo
+endfunc
 " vim: shiftwidth=2 sts=2 expandtab
diff --git a/src/testdir/test_options.vim b/src/testdir/test_options.vim
index 02f5d7e..94c98fe 100644
--- a/src/testdir/test_options.vim
+++ b/src/testdir/test_options.vim
@@ -1728,7 +1728,7 @@
     qall
   [CODE]
   if RunVim([], after, '')
-    call assert_equal(['aAbBcCdDeEfFgHiIjJkKlLmMnoOpPqrRsStuvwWxXyZ$!%*-+<>#{|&/\.;',
+    call assert_equal(['aAbBcCdDeEfFgHiIjJkKlLmMnoOpPqrRsStuvwWxXyZz$!%*-+<>#{|&/\.;',
           \            'AS'], readfile('X_VIM_POSIX'))
   endif
 
@@ -1738,7 +1738,7 @@
     qall
   [CODE]
   if RunVim([], after, '')
-    call assert_equal(['aAbBcCdDeEfFgHiIjJkKlLmMnoOpPqrRsStuvwWxXyZ$!%*-+<>;',
+    call assert_equal(['aAbBcCdDeEfFgHiIjJkKlLmMnoOpPqrRsStuvwWxXyZz$!%*-+<>;',
           \            'S'], readfile('X_VIM_POSIX'))
   endif
 
diff --git a/src/testdir/test_quickfix.vim b/src/testdir/test_quickfix.vim
index 0b61815..47b9b47 100644
--- a/src/testdir/test_quickfix.vim
+++ b/src/testdir/test_quickfix.vim
@@ -893,7 +893,7 @@
 endfunc
 
 def Test_helpgrep_vim9_restore_cpo()
-  assert_equal('aABceFs', &cpo)
+  assert_equal('aABceFsz', &cpo)
 
   var rtp_save = &rtp
   var dir = 'Xruntime/after'
@@ -905,7 +905,7 @@
   cwindow
   silent helpgrep grail
 
-  assert_equal('aABceFs', &cpo)
+  assert_equal('aABceFsz', &cpo)
   &rtp = rtp_save
   cclose
   helpclose
diff --git a/src/testdir/test_vim9_script.vim b/src/testdir/test_vim9_script.vim
index a169c79..bcb590d 100644
--- a/src/testdir/test_vim9_script.vim
+++ b/src/testdir/test_vim9_script.vim
@@ -4007,7 +4007,7 @@
   edit XanotherScript
   so %
   assert_equal('aABceFsMny>', &cpo)
-  assert_equal('aABceFs', g:cpoval)
+  assert_equal('aABceFsz', g:cpoval)
   :1del
   setline(1, 'let g:cpoval = &cpo')
   w
@@ -4048,10 +4048,10 @@
     exe "silent !" .. cmd
 
     assert_equal([
-        'before: aABceFs',
-        'after: aABceFsM',
-        'later: aABceFsM',
-        'vim9: aABceFs'], readfile('Xrporesult'))
+        'before: aABceFsz',
+        'after: aABceFszM',
+        'later: aABceFszM',
+        'vim9: aABceFsz'], readfile('Xrporesult'))
 
     $HOME = save_HOME
     delete('Xrporesult')
diff --git a/src/version.c b/src/version.c
index e97346d..024ed1a 100644
--- a/src/version.c
+++ b/src/version.c
@@ -705,6 +705,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    589,
+/**/
     588,
 /**/
     587,