diff --git a/runtime/doc/diff.txt b/runtime/doc/diff.txt
index 2a231b1..e3d8f53 100644
--- a/runtime/doc/diff.txt
+++ b/runtime/doc/diff.txt
@@ -398,6 +398,11 @@
 The `redraw!` command may not be needed, depending on whether executing a
 shell command shows something on the display or not.
 
+If the 'diffexpr' expression starts with s: or |<SID>|, then it is replaced
+with the script ID (|local-function|). Example: >
+		set diffexpr=s:MyDiffExpr()
+		set diffexpr=<SID>SomeDiffExpr()
+<
 						*E810* *E97*
 Vim will do a test if the diff output looks alright.  If it doesn't, you will
 get an error message.  Possible causes:
@@ -449,4 +454,9 @@
 directory are accidentally patched.  Vim will also delete files starting with
 v:fname_in and ending in ".rej" and ".orig".
 
+If the 'patchexpr' expression starts with s: or |<SID>|, then it is replaced
+with the script ID (|local-function|). Example: >
+		set patchexpr=s:MyPatchExpr()
+		set patchexpr=<SID>SomePatchExpr()
+<
  vim:tw=78:ts=8:noet:ft=help:norl:
diff --git a/runtime/doc/fold.txt b/runtime/doc/fold.txt
index 274e472..56c3c75 100644
--- a/runtime/doc/fold.txt
+++ b/runtime/doc/fold.txt
@@ -121,6 +121,11 @@
 Try to avoid the "=", "a" and "s" return values, since Vim often has to search
 backwards for a line for which the fold level is defined.  This can be slow.
 
+If the 'foldexpr' expression starts with s: or |<SID>|, then it is replaced
+with the script ID (|local-function|). Example: >
+		set foldexpr=s:MyFoldExpr()
+		set foldexpr=<SID>SomeFoldExpr()
+<
 An example of using "a1" and "s1": For a multi-line C comment, a line
 containing "/*" would return "a1" to start a fold, and a line containing "*/"
 would return "s1" to end the fold after that line: >
@@ -543,6 +548,8 @@
 
 These characters can be changed with the 'fillchars' option.
 
+These characters can be changed with the 'fillchars' option.
+
 Where the fold column is too narrow to display all nested folds, digits are
 shown to indicate the nesting level.
 
diff --git a/runtime/doc/options.txt b/runtime/doc/options.txt
index 845351d..f0939e6 100644
--- a/runtime/doc/options.txt
+++ b/runtime/doc/options.txt
@@ -1225,6 +1225,11 @@
 	Vim does not try to send a message to an external debugger (Netbeans
 	or Sun Workshop).
 
+	If the expression starts with s: or |<SID>|, then it is replaced with
+	the script ID (|local-function|). Example: >
+		set bexpr=s:MyBalloonExpr()
+		set bexpr=<SID>SomeBalloonExpr()
+<
 	The expression will be evaluated in the |sandbox| when set from a
 	modeline, see |sandbox-option|.
 	This option cannot be set in a modeline when 'modelineexpr' is off.
@@ -3596,6 +3601,11 @@
 	When the expression evaluates to non-zero Vim will fall back to using
 	the internal format mechanism.
 
+	If the expression starts with s: or |<SID>|, then it is replaced with
+	the script ID (|local-function|). Example: >
+		set formatexpr=s:MyFormatExpr()
+		set formatexpr=<SID>SomeFormatExpr()
+<
 	The expression will be evaluated in the |sandbox| when set from a
 	modeline, see |sandbox-option|.  That stops the option from working,
 	since changing the buffer text is not allowed.
@@ -4438,6 +4448,11 @@
 	found.  Allows doing "gf" on the name after an 'include' statement.
 	Also used for |<cfile>|.
 
+	If the expression starts with s: or |<SID>|, then it is replaced with
+	the script ID (|local-function|). Example: >
+		set includeexpr=s:MyIncludeExpr(v:fname)
+		set includeexpr=<SID>SomeIncludeExpr(v:fname)
+<
 	The expression will be evaluated in the |sandbox| when set from a
 	modeline, see |sandbox-option|.
 	This option cannot be set in a modeline when 'modelineexpr' is off.
@@ -4511,6 +4526,11 @@
 	The expression is evaluated with |v:lnum| set to the line number for
 	which the indent is to be computed.  The cursor is also in this line
 	when the expression is evaluated (but it may be moved around).
+	If the expression starts with s: or |<SID>|, then it is replaced with
+	the script ID (|local-function|). Example: >
+		set indentexpr=s:MyIndentExpr()
+		set indentexpr=<SID>SomeIndentExpr()
+<
 	The expression must return the number of spaces worth of indent.  It
 	can return "-1" to keep the current indent (this means 'autoindent' is
 	used for the indent).
diff --git a/runtime/doc/print.txt b/runtime/doc/print.txt
index aaa004c..eebdf7e 100644
--- a/runtime/doc/print.txt
+++ b/runtime/doc/print.txt
@@ -174,6 +174,11 @@
 value for non-MS-Windows a trick is used: Adding "v:shell_error" will result
 in a non-zero number when the system() call fails.
 
+If the expression starts with s: or |<SID>|, then it is replaced with the
+script ID (|local-function|). Example: >
+		set printexpr=s:MyPrintFile()
+		set printexpr=<SID>SomePrintFile()
+<
 This option cannot be set from a |modeline| or in the |sandbox|, for security
 reasons.
 
diff --git a/src/optionstr.c b/src/optionstr.c
index dbb93cd..c69354e 100644
--- a/src/optionstr.c
+++ b/src/optionstr.c
@@ -2026,14 +2026,6 @@
 		newFoldLevel();
 	}
     }
-# ifdef FEAT_EVAL
-    // 'foldexpr'
-    else if (varp == &curwin->w_p_fde)
-    {
-	if (foldmethodIsExpr(curwin))
-	    foldUpdateAll(curwin);
-    }
-# endif
     // 'foldmarker'
     else if (gvarp == &curwin->w_allbuf_opt.wo_fmr)
     {
@@ -2307,6 +2299,89 @@
 # endif
 #endif
 
+#ifdef FEAT_EVAL
+    // '*expr' options
+    else if (
+# ifdef FEAT_BEVAL
+	    varp == &p_bexpr ||
+# endif
+# ifdef FEAT_DIFF
+	    varp == &p_dex ||
+# endif
+# ifdef FEAT_FOLDING
+	    varp == &curwin->w_p_fde ||
+# endif
+	    gvarp == &p_fex ||
+# ifdef FEAT_FIND_ID
+	    gvarp == &p_inex ||
+# endif
+# ifdef FEAT_CINDENT
+	    gvarp == &p_inde ||
+# endif
+# ifdef FEAT_DIFF
+	    varp == &p_pex ||
+# endif
+# ifdef FEAT_POSTSCRIPT
+	    varp == &p_pexpr ||
+# endif
+	    FALSE
+	    )
+    {
+	char_u	**p_opt = NULL;
+	char_u	*name;
+
+	// If the option value starts with <SID> or s:, then replace that with
+	// the script identifier.
+# ifdef FEAT_BEVAL
+	if (varp == &p_bexpr)		// 'balloonexpr'
+	    p_opt = (opt_flags & OPT_LOCAL) ? &curbuf->b_p_bexpr : &p_bexpr;
+# endif
+# ifdef FEAT_DIFF
+	if (varp == &p_dex)	// 'diffexpr'
+	    p_opt = &p_dex;
+# endif
+# ifdef FEAT_FOLDING
+	if(varp == &curwin->w_p_fde)	// 'foldexpr'
+	    p_opt = &curwin->w_p_fde;
+# endif
+	if (gvarp == &p_fex)	// 'formatexpr'
+	    p_opt = &curbuf->b_p_fex;
+# ifdef FEAT_FIND_ID
+	if (gvarp == &p_inex)	// 'includeexpr'
+	    p_opt = &curbuf->b_p_inex;
+# endif
+# ifdef FEAT_CINDENT
+	if (gvarp == &p_inde)	// 'indentexpr'
+	    p_opt = &curbuf->b_p_inde;
+# endif
+# ifdef FEAT_DIFF
+	if (varp == &p_pex)	// 'patchexpr'
+	    p_opt = &p_pex;
+# endif
+# ifdef FEAT_POSTSCRIPT
+	if (varp == &p_pexpr)	// 'printexpr'
+	    p_opt = &p_pexpr;
+# endif
+
+	if (p_opt != NULL)
+	{
+	    name = get_scriptlocal_funcname(*p_opt);
+	    if (name != NULL)
+	    {
+		if (new_value_alloced)
+		    free_string_option(*p_opt);
+		*p_opt = name;
+		new_value_alloced = TRUE;
+	    }
+	}
+
+# ifdef FEAT_FOLDING
+	if (varp == &curwin->w_p_fde && foldmethodIsExpr(curwin))
+	    foldUpdateAll(curwin);
+# endif
+    }
+#endif
+
 #ifdef FEAT_COMPL_FUNC
     // 'completefunc'
     else if (gvarp == &p_cfu)
diff --git a/src/testdir/test_diffmode.vim b/src/testdir/test_diffmode.vim
index 9338fe0..d4c44ce 100644
--- a/src/testdir/test_diffmode.vim
+++ b/src/testdir/test_diffmode.vim
@@ -681,8 +681,19 @@
   set diffexpr=NewDiffFunc()
   call assert_fails('windo diffthis', ['E117:', 'E97:'])
   diffoff!
+
+  " Using a script-local function
+  func s:NewDiffExpr()
+  endfunc
+  set diffexpr=s:NewDiffExpr()
+  call assert_equal(expand('<SID>') .. 'NewDiffExpr()', &diffexpr)
+  set diffexpr=<SID>NewDiffExpr()
+  call assert_equal(expand('<SID>') .. 'NewDiffExpr()', &diffexpr)
+
   %bwipe!
   set diffexpr& diffopt&
+  delfunc DiffExpr
+  delfunc s:NewDiffExpr
 endfunc
 
 func Test_diffpatch()
@@ -1216,10 +1227,19 @@
   call assert_equal(2, winnr('$'))
   call assert_true(&diff)
 
+  " Using a script-local function
+  func s:NewPatchExpr()
+  endfunc
+  set patchexpr=s:NewPatchExpr()
+  call assert_equal(expand('<SID>') .. 'NewPatchExpr()', &patchexpr)
+  set patchexpr=<SID>NewPatchExpr()
+  call assert_equal(expand('<SID>') .. 'NewPatchExpr()', &patchexpr)
+
   call delete('Xinput')
   call delete('Xdiff')
   set patchexpr&
   delfunc TPatch
+  delfunc s:NewPatchExpr
   %bwipe!
 endfunc
 
diff --git a/src/testdir/test_edit.vim b/src/testdir/test_edit.vim
index 46a4752..c39c8a0 100644
--- a/src/testdir/test_edit.vim
+++ b/src/testdir/test_edit.vim
@@ -324,6 +324,16 @@
   set cinkeys&vim indentkeys&vim
   set nocindent indentexpr=
   delfu Do_Indent
+
+  " Using a script-local function
+  func s:NewIndentExpr()
+  endfunc
+  set indentexpr=s:NewIndentExpr()
+  call assert_equal(expand('<SID>') .. 'NewIndentExpr()', &indentexpr)
+  set indentexpr=<SID>NewIndentExpr()
+  call assert_equal(expand('<SID>') .. 'NewIndentExpr()', &indentexpr)
+  set indentexpr&
+
   bw!
 endfunc
 
diff --git a/src/testdir/test_fold.vim b/src/testdir/test_fold.vim
index 85fa43d..d35b7c8 100644
--- a/src/testdir/test_fold.vim
+++ b/src/testdir/test_fold.vim
@@ -1382,4 +1382,30 @@
   bw!
 endfunc
 
+" Test for using a script-local function for 'foldexpr'
+func Test_foldexpr_scriptlocal_func()
+  func! s:FoldFunc()
+    let g:FoldLnum = v:lnum
+  endfunc
+  new | only
+  call setline(1, 'abc')
+  let g:FoldLnum = 0
+  set foldmethod=expr foldexpr=s:FoldFunc()
+  redraw!
+  call assert_equal(expand('<SID>') .. 'FoldFunc()', &foldexpr)
+  call assert_equal(1, g:FoldLnum)
+  set foldmethod& foldexpr=
+  bw!
+  new | only
+  call setline(1, 'abc')
+  let g:FoldLnum = 0
+  set foldmethod=expr foldexpr=<SID>FoldFunc()
+  redraw!
+  call assert_equal(expand('<SID>') .. 'FoldFunc()', &foldexpr)
+  call assert_equal(1, g:FoldLnum)
+  set foldmethod& foldexpr=
+  delfunc s:FoldFunc
+  bw!
+endfunc
+
 " vim: shiftwidth=2 sts=2 expandtab
diff --git a/src/testdir/test_gf.vim b/src/testdir/test_gf.vim
index 5e5de41..1b13c42 100644
--- a/src/testdir/test_gf.vim
+++ b/src/testdir/test_gf.vim
@@ -217,4 +217,30 @@
   delfunc IncFunc
 endfunc
 
+" Test for using a script-local function for 'includeexpr'
+func Test_includeexpr_scriptlocal_func()
+  func! s:IncludeFunc()
+    let g:IncludeFname = v:fname
+    return ''
+  endfunc
+  set includeexpr=s:IncludeFunc()
+  call assert_equal(expand('<SID>') .. 'IncludeFunc()', &includeexpr)
+  new | only
+  call setline(1, 'TestFile1')
+  let g:IncludeFname = ''
+  call assert_fails('normal! gf', 'E447:')
+  call assert_equal('TestFile1', g:IncludeFname)
+  bw!
+  set includeexpr=<SID>IncludeFunc()
+  call assert_equal(expand('<SID>') .. 'IncludeFunc()', &includeexpr)
+  new | only
+  call setline(1, 'TestFile2')
+  let g:IncludeFname = ''
+  call assert_fails('normal! gf', 'E447:')
+  call assert_equal('TestFile2', g:IncludeFname)
+  set includeexpr&
+  delfunc s:IncludeFunc
+  bw!
+endfunc
+
 " vim: shiftwidth=2 sts=2 expandtab
diff --git a/src/testdir/test_gui.vim b/src/testdir/test_gui.vim
index 133298d..9055284 100644
--- a/src/testdir/test_gui.vim
+++ b/src/testdir/test_gui.vim
@@ -258,6 +258,15 @@
   setl balloonexpr&
   call assert_equal('', &balloonexpr)
   delfunc MyBalloonExpr
+
+  " Using a script-local function
+  func s:NewBalloonExpr()
+  endfunc
+  set balloonexpr=s:NewBalloonExpr()
+  call assert_equal(expand('<SID>') .. 'NewBalloonExpr()', &balloonexpr)
+  set balloonexpr=<SID>NewBalloonExpr()
+  call assert_equal(expand('<SID>') .. 'NewBalloonExpr()', &balloonexpr)
+  delfunc s:NewBalloonExpr
   bwipe!
 
   " Multiline support
diff --git a/src/testdir/test_hardcopy.vim b/src/testdir/test_hardcopy.vim
index e390bd5..be83728 100644
--- a/src/testdir/test_hardcopy.vim
+++ b/src/testdir/test_hardcopy.vim
@@ -125,6 +125,14 @@
   set printexpr=PrintFails(v:fname_in)
   call assert_fails('hardcopy', 'E365:')
 
+  " Using a script-local function
+  func s:NewPrintExpr()
+  endfunc
+  set printexpr=s:NewPrintExpr()
+  call assert_equal(expand('<SID>') .. 'NewPrintExpr()', &printexpr)
+  set printexpr=<SID>NewPrintExpr()
+  call assert_equal(expand('<SID>') .. 'NewPrintExpr()', &printexpr)
+
   set printexpr&
   bwipe
 endfunc
diff --git a/src/testdir/test_normal.vim b/src/testdir/test_normal.vim
index 57ea6d3..6458a1b 100644
--- a/src/testdir/test_normal.vim
+++ b/src/testdir/test_normal.vim
@@ -253,6 +253,45 @@
   close!
 endfunc
 
+" Test for using a script-local function for 'formatexpr'
+func Test_formatexpr_scriptlocal_func()
+  func! s:Format()
+    let g:FormatArgs = [v:lnum, v:count]
+  endfunc
+  set formatexpr=s:Format()
+  call assert_equal(expand('<SID>') .. 'Format()', &formatexpr)
+  new | only
+  call setline(1, range(1, 40))
+  let g:FormatArgs = []
+  normal! 2GVjgq
+  call assert_equal([2, 2], g:FormatArgs)
+  bw!
+  set formatexpr=<SID>Format()
+  call assert_equal(expand('<SID>') .. 'Format()', &formatexpr)
+  new | only
+  call setline(1, range(1, 40))
+  let g:FormatArgs = []
+  normal! 4GVjgq
+  call assert_equal([4, 2], g:FormatArgs)
+  bw!
+  let &formatexpr = 's:Format()'
+  new | only
+  call setline(1, range(1, 40))
+  let g:FormatArgs = []
+  normal! 6GVjgq
+  call assert_equal([6, 2], g:FormatArgs)
+  bw!
+  let &formatexpr = '<SID>Format()'
+  new | only
+  call setline(1, range(1, 40))
+  let g:FormatArgs = []
+  normal! 8GVjgq
+  call assert_equal([8, 2], g:FormatArgs)
+  setlocal formatexpr=
+  delfunc s:Format
+  bw!
+endfunc
+
 " basic test for formatprg
 func Test_normal06_formatprg()
   " only test on non windows platform
diff --git a/src/version.c b/src/version.c
index 260182b..1ada856 100644
--- a/src/version.c
+++ b/src/version.c
@@ -750,6 +750,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    3900,
+/**/
     3899,
 /**/
     3898,