patch 8.2.2016: swap file test is a little flaky

Problem:    Swap file test is a little flaky.
Solution:   Don't set a byte to a fixed value, increment it.

runtime/doc/vim9.txt

@@ -112,8 +112,7 @@ In Vi # is a command to list text with numbers.  In Vim9 script you can use
 	101 number
 
 To improve readability there must be a space between a command and the #
-that starts a comment.  Note that #{ is the start of a dictionary, therefore
-it does not start a comment.
+that starts a comment.
 
 
 Vim9 functions ~
@@ -303,8 +302,7 @@ identifier or can't be an Ex command.  Examples: >
 	myList->add(123)
 	g:myList->add(123)
 	[1, 2, 3]->Process()
-	#{a: 1, b: 2}->Process()
-	{'a': 1, 'b': 2}->Process()
+	{a: 1, b: 2}->Process()
 	"foobar"->Process()
 	("foobar")->Process()
 	'foobar'->Process()
@@ -346,7 +344,7 @@ those cases there is no need to prefix the line with a backslash
 		'two',
 		]
 And when a dict spans multiple lines: >
-	var mydict = #{
+	var mydict = {
 		one: 1,
 		two: 2,
 		}
@@ -430,6 +428,27 @@ No curly braces expansion ~
 |curly-braces-names| cannot be used.
 
 
+Dictionary literals ~
+
+Traditionally Vim has supported dictionary literals with a {} syntax: >
+	let dict = {'key': value}
+
+Later it became clear that using a simple key name is very common, thus
+literally dictionaries were introduced in a backwards compatible way: >
+	let dict = #{key: value}
+
+However, this #{} syntax is unlike any existing language.  As it appears that
+using a literaly key is much more common than using an expression, and
+considering that JavaScript uses this syntax, using the {} form for dictionary
+literals was considered a much more useful syntax.  In Vim9 script the {} form
+uses literal keys: >
+	let dict = {key: value}
+
+In case an expression needs to be used for the key, square brackets can be
+used, just like in JavaScript: >
+	let dict = {["key" .. nr]: value}
+
+
 No :xit, :t, :append, :change or :insert ~
 
 These commands are too easily confused with local variable names.

src/GvimExt/gvimext.cpp

@@ -161,7 +161,6 @@ static char *null_libintl_bindtextdomain(const char *, const char *);
 static int dyn_libintl_init(char *dir);
 static void dyn_libintl_end(void);
 
-static wchar_t *oldenv = NULL;
 static HINSTANCE hLibintlDLL = 0;
 static char *(*dyn_libintl_gettext)(const char *) = null_libintl_gettext;
 static char *(*dyn_libintl_textdomain)(const char *) = null_libintl_textdomain;
@@ -205,17 +204,17 @@ dyn_libintl_init(char *dir)
     if (buf != NULL && buf2 != NULL)
     {
 	GetEnvironmentVariableW(L"PATH", buf, len);
-#ifdef _WIN64
+# ifdef _WIN64
 	_snwprintf(buf2, len2, L"%S\\GvimExt64;%s", dir, buf);
-#else
+# else
 	_snwprintf(buf2, len2, L"%S\\GvimExt32;%s", dir, buf);
-#endif
+# endif
 	SetEnvironmentVariableW(L"PATH", buf2);
 	hLibintlDLL = LoadLibrary(GETTEXT_DLL);
-#ifdef GETTEXT_DLL_ALT
+# ifdef GETTEXT_DLL_ALT
 	if (!hLibintlDLL)
 	    hLibintlDLL = LoadLibrary(GETTEXT_DLL_ALT);
-#endif
+# endif
 	SetEnvironmentVariableW(L"PATH", buf);
     }
     free(buf);
@@ -273,56 +272,7 @@ null_libintl_textdomain(const char*  /* domainname */)
 dyn_gettext_load(void)
 {
     char    szBuff[BUFSIZE];
-    char    szLang[BUFSIZE];
     DWORD   len;
-    HKEY    keyhandle;
-    int	    gotlang = 0;
-
-    strcpy(szLang, "LANG=");
-
-    // First try getting the language from the registry, this can be
-    // used to overrule the system language.
-    if (RegOpenKeyEx(HKEY_LOCAL_MACHINE, "Software\\Vim\\Gvim", 0,
-				       KEY_READ, &keyhandle) == ERROR_SUCCESS)
-    {
-	len = BUFSIZE;
-	if (RegQueryValueEx(keyhandle, "lang", 0, NULL, (BYTE*)szBuff, &len)
-							     == ERROR_SUCCESS)
-	{
-	    szBuff[len] = 0;
-	    strcat(szLang, szBuff);
-	    gotlang = 1;
-	}
-	RegCloseKey(keyhandle);
-    }
-
-    if (!gotlang && getenv("LANG") == NULL)
-    {
-	// Get the language from the system.
-	// Could use LOCALE_SISO639LANGNAME, but it's not in Win95.
-	// LOCALE_SABBREVLANGNAME gives us three letters, like "enu", we use
-	// only the first two.
-	len = GetLocaleInfo(LOCALE_USER_DEFAULT, LOCALE_SABBREVLANGNAME,
-						    (LPTSTR)szBuff, BUFSIZE);
-	if (len >= 2 && _strnicmp(szBuff, "en", 2) != 0)
-	{
-	    // There are a few exceptions (probably more)
-	    if (_strnicmp(szBuff, "cht", 3) == 0
-					  || _strnicmp(szBuff, "zht", 3) == 0)
-		strcpy(szBuff, "zh_TW");
-	    else if (_strnicmp(szBuff, "chs", 3) == 0
-					  || _strnicmp(szBuff, "zhc", 3) == 0)
-		strcpy(szBuff, "zh_CN");
-	    else if (_strnicmp(szBuff, "jp", 2) == 0)
-		strcpy(szBuff, "ja");
-	    else
-		szBuff[2] = 0;	// truncate to two-letter code
-	    strcat(szLang, szBuff);
-	    gotlang = 1;
-	}
-    }
-    if (gotlang)
-	putenv(szLang);
 
     // Try to locate the runtime files.  The path is used to find libintl.dll
     // and the vim.mo files.
@@ -378,10 +328,8 @@ DllMain(HINSTANCE hInstance, DWORD dwReason, LPVOID  /* lpReserved */)
 inc_cRefThisDLL()
 {
 #ifdef FEAT_GETTEXT
-    if (g_cRefThisDll == 0) {
+    if (g_cRefThisDll == 0)
 	dyn_gettext_load();
-	oldenv = GetEnvironmentStringsW();
-    }
 #endif
     InterlockedIncrement((LPLONG)&g_cRefThisDll);
 }
@@ -390,13 +338,8 @@ inc_cRefThisDLL()
 dec_cRefThisDLL()
 {
 #ifdef FEAT_GETTEXT
-    if (InterlockedDecrement((LPLONG)&g_cRefThisDll) == 0) {
+    if (InterlockedDecrement((LPLONG)&g_cRefThisDll) == 0)
 	dyn_gettext_free();
-	if (oldenv != NULL) {
-	    FreeEnvironmentStringsW(oldenv);
-	    oldenv = NULL;
-	}
-    }
 #else
     InterlockedDecrement((LPLONG)&g_cRefThisDll);
 #endif
@@ -967,8 +910,8 @@ STDMETHODIMP CShellExt::InvokeGvim(HWND hParent,
 			NULL,		// Process handle not inheritable.
 			NULL,		// Thread handle not inheritable.
 			FALSE,		// Set handle inheritance to FALSE.
-			oldenv == NULL ? 0 : CREATE_UNICODE_ENVIRONMENT,
-			oldenv,		// Use unmodified environment block.
+			0,		// No creation flags.
+			NULL,		// Use parent's environment block.
 			NULL,		// Use parent's starting directory.
 			&si,		// Pointer to STARTUPINFO structure.
 			&pi)		// Pointer to PROCESS_INFORMATION structure.
@@ -1057,8 +1000,8 @@ STDMETHODIMP CShellExt::InvokeSingleGvim(HWND hParent,
 		NULL,		// Process handle not inheritable.
 		NULL,		// Thread handle not inheritable.
 		FALSE,		// Set handle inheritance to FALSE.
-		oldenv == NULL ? 0 : CREATE_UNICODE_ENVIRONMENT,
-		oldenv,		// Use unmodified environment block.
+		0,		// No creation flags.
+		NULL,		// Use parent's environment block.
 		NULL,		// Use parent's starting directory.
 		&si,		// Pointer to STARTUPINFO structure.
 		&pi)		// Pointer to PROCESS_INFORMATION structure.

src/errors.h

@@ -301,3 +301,7 @@ EXTERN char e_cmd_mapping_must_end_with_cr_before_second_cmd[]
 	INIT(=N_("E1136: <Cmd> mapping must end with <CR> before second <Cmd>"));
 EXTERN char e_cmd_maping_must_not_include_str_key[]
 	INIT(= N_("E1137: <Cmd> mapping must not include %s key"));
+EXTERN char e_using_bool_as_number[]
+	INIT(= N_("E1138: Using a Bool as a Number"));
+EXTERN char e_missing_matching_bracket_after_dict_key[]
+	INIT(= N_("E1139: Missing matching bracket after dict key"));

src/gui_w32.c

@@ -2134,7 +2134,10 @@ gui_mch_wait_for_chars(int wtime)
 		break;
 	    }
 	    else if (input_available()
-		    || MsgWaitForMultipleObjects(0, NULL, FALSE, 100,
+		    // TODO: The 10 msec is a compromise between laggy response
+		    // and consuming more CPU time.  Better would be to handle
+		    // channel messages when they arrive.
+		    || MsgWaitForMultipleObjects(0, NULL, FALSE, 10,
 						  QS_ALLINPUT) != WAIT_TIMEOUT)
 		break;
 	}
@@ -8458,7 +8461,7 @@ make_tooltip(BalloonEval *beval, char *text, POINT pt)
     TOOLINFOW	*pti;
     int		ToolInfoSize;
 
-    if (multiline_balloon_available() == TRUE)
+    if (multiline_balloon_available())
 	ToolInfoSize = sizeof(TOOLINFOW_NEW);
     else
 	ToolInfoSize = sizeof(TOOLINFOW);
@@ -8481,7 +8484,7 @@ make_tooltip(BalloonEval *beval, char *text, POINT pt)
     pti->hinst = 0; // Don't use string resources
     pti->uId = ID_BEVAL_TOOLTIP;
 
-    if (multiline_balloon_available() == TRUE)
+    if (multiline_balloon_available())
     {
 	RECT rect;
 	TOOLINFOW_NEW *ptin = (TOOLINFOW_NEW *)pti;

src/job.c

@@ -1628,7 +1628,7 @@ init_prompt(int cmdchar_todo)
 
     if (cmdchar_todo == 'A')
 	coladvance((colnr_T)MAXCOL);
-    if (cmdchar_todo == 'I' || curwin->w_cursor.col <= (int)STRLEN(prompt))
+    if (curwin->w_cursor.col < (int)STRLEN(prompt))
 	curwin->w_cursor.col = (int)STRLEN(prompt);
     // Make sure the cursor is in a valid position.
     check_cursor();

src/proto/vim9compile.pro

@@ -8,6 +8,7 @@ imported_T *find_imported_in_script(char_u *name, size_t len, int sid);
 int vim9_comment_start(char_u *p);
 char_u *peek_next_line_from_context(cctx_T *cctx);
 char_u *next_line_from_context(cctx_T *cctx, int skip_comment);
+char_u *to_name_end(char_u *arg, int namespace);
 char_u *to_name_const_end(char_u *arg);
 exptype_T get_compare_type(char_u *p, int *len, int *type_is);
 void error_white_both(char_u *op, int len);

src/syntax.c

@@ -3869,9 +3869,14 @@ syn_cmd_list(
 		msg_puts(_("no syncing"));
 	    else
 	    {
-		msg_puts(_("syncing starts "));
-		msg_outnum(curwin->w_s->b_syn_sync_minlines);
-		msg_puts(_(" lines before top line"));
+		if (curwin->w_s->b_syn_sync_minlines == MAXLNUM)
+		    msg_puts(_("syncing starts at the first line"));
+		else
+		{
+		    msg_puts(_("syncing starts "));
+		    msg_outnum(curwin->w_s->b_syn_sync_minlines);
+		    msg_puts(_(" lines before top line"));
+		}
 		syn_match_msg();
 	    }
 	    return;
@@ -3935,19 +3940,24 @@ syn_lines_msg(void)
 				      || curwin->w_s->b_syn_sync_minlines > 0)
     {
 	msg_puts("; ");
-	if (curwin->w_s->b_syn_sync_minlines > 0)
+	if (curwin->w_s->b_syn_sync_minlines == MAXLNUM)
+	    msg_puts(_("from the first line"));
+	else
 	{
-	    msg_puts(_("minimal "));
-	    msg_outnum(curwin->w_s->b_syn_sync_minlines);
-	    if (curwin->w_s->b_syn_sync_maxlines)
-		msg_puts(", ");
+	    if (curwin->w_s->b_syn_sync_minlines > 0)
+	    {
+		msg_puts(_("minimal "));
+		msg_outnum(curwin->w_s->b_syn_sync_minlines);
+		if (curwin->w_s->b_syn_sync_maxlines)
+		    msg_puts(", ");
+	    }
+	    if (curwin->w_s->b_syn_sync_maxlines > 0)
+	    {
+		msg_puts(_("maximal "));
+		msg_outnum(curwin->w_s->b_syn_sync_maxlines);
+	    }
+	    msg_puts(_(" lines before top line"));
 	}
-	if (curwin->w_s->b_syn_sync_maxlines > 0)
-	{
-	    msg_puts(_("maximal "));
-	    msg_outnum(curwin->w_s->b_syn_sync_maxlines);
-	}
-	msg_puts(_(" lines before top line"));
     }
 }
 

src/testdir/test_prompt_buffer.vim

@@ -85,9 +85,12 @@ func Test_prompt_editing()
   call term_sendkeys(buf, left . left . left . bs . '-')
   call WaitForAssert({-> assert_equal('cmd: -hel', term_getline(buf, 1))})
 
+  call term_sendkeys(buf, "\<C-O>lz")
+  call WaitForAssert({-> assert_equal('cmd: -hzel', term_getline(buf, 1))})
+
   let end = "\<End>"
   call term_sendkeys(buf, end . "x")
-  call WaitForAssert({-> assert_equal('cmd: -helx', term_getline(buf, 1))})
+  call WaitForAssert({-> assert_equal('cmd: -hzelx', term_getline(buf, 1))})
 
   call term_sendkeys(buf, "\<C-U>exit\<CR>")
   call WaitForAssert({-> assert_equal('other buffer', term_getline(buf, 1))})

src/testdir/test_swap.vim

@@ -417,7 +417,7 @@ func Test_swap_auto_delete()
   " swap file should be automatically deleted.
   bwipe!
   " change the process ID to avoid the "still running" warning
-  let swapfile_bytes[24] = 0x99
+  let swapfile_bytes[24] = swapfile_bytes[24] + 1
   call writefile(swapfile_bytes, swapfile_name)
   edit Xtest.scr
   " will end up using the same swap file after deleting the existing one
@@ -433,7 +433,7 @@ func Test_swap_auto_delete()
   augroup END
 
   " change the host name
-  let swapfile_bytes[28 + 40] = 0x89
+  let swapfile_bytes[28 + 40] = swapfile_bytes[28 + 40] + 2
   call writefile(swapfile_bytes, swapfile_name)
   edit Xtest.scr
   call assert_equal(1, filereadable(swapfile_name))

src/testdir/test_syntax.vim

@@ -316,6 +316,8 @@ func Test_syntax_arg_skipped()
     syn sync ccomment
   endif
   call assert_notmatch('on C-style comments', execute('syntax sync'))
+  syn sync fromstart
+  call assert_match('syncing starts at the first line', execute('syntax sync'))
 
   syn clear
 endfunc
@@ -735,6 +737,7 @@ func Test_syntax_foldlevel()
   redir END
   call assert_equal("\nsyntax foldlevel start", @c)
   syn sync fromstart
+  call assert_match('from the first line$', execute('syn sync'))
   let a = map(range(3,9), 'foldclosed(v:val)')
   call assert_equal([3,3,3,3,3,3,3], a) " attached cascade folds together
   let a = map(range(10,15), 'foldclosed(v:val)')

src/testdir/test_terminal.vim

@@ -1266,7 +1266,7 @@ func Test_terminal_popup_insert_cmd()
   call assert_equal('n', mode())
 
   call feedkeys("\<C-D>", 'xt')
-  sleep 50m
+  call WaitFor({-> popup_list() == []})
   delfunc StartTermInPopup
   iunmap <F3>
 endfunc

src/testdir/test_vim9_builtin.vim

@@ -226,7 +226,7 @@ enddef
 
 
 def Wrong_dict_key_type(items: list<number>): list<number>
-  return filter(items, {_, val -> get({val: 1}, 'x')})
+  return filter(items, {_, val -> get({[val]: 1}, 'x')})
 enddef
 
 def Test_filter_wrong_dict_key_type()

src/testdir/test_vim9_disassemble.vim

@@ -749,6 +749,9 @@ def Test_disassemble_const_expr()
 enddef
 
 def ReturnInIf(): string
+  if 1 < 0
+    return "maybe"
+  endif
   if g:cond
     return "yes"
   else
@@ -759,6 +762,9 @@ enddef
 def Test_disassemble_return_in_if()
   var instr = execute('disassemble ReturnInIf')
   assert_match('ReturnInIf\_s*' ..
+        'if 1 < 0\_s*' ..
+        '  return "maybe"\_s*' ..
+        'endif\_s*' ..
         'if g:cond\_s*' ..
         '0 LOADG g:cond\_s*' ..
         '1 COND2BOOL\_s*' ..

src/testdir/test_vim9_expr.vim

@@ -1292,6 +1292,13 @@ func Test_expr5_fails()
   call CheckDefFailure(["var x = 'a' .. 0z32"], 'E1105:', 1)
   call CheckDefFailure(["var x = 'a' .. function('len')"], 'E1105:', 1)
   call CheckDefFailure(["var x = 'a' .. function('len', ['a'])"], 'E1105:', 1)
+
+  call CheckScriptFailure(['vim9script', 'var x = 1 + v:none'], 'E611:', 2)
+  call CheckScriptFailure(['vim9script', 'var x = 1 + v:null'], 'E611:', 2)
+  call CheckScriptFailure(['vim9script', 'var x = 1 + v:true'], 'E1138:', 2)
+  call CheckScriptFailure(['vim9script', 'var x = 1 + v:false'], 'E1138:', 2)
+  call CheckScriptFailure(['vim9script', 'var x = 1 + true'], 'E1138:', 2)
+  call CheckScriptFailure(['vim9script', 'var x = 1 + false'], 'E1138:', 2)
 endfunc
 
 func Test_expr5_fails_channel()
@@ -1876,6 +1883,9 @@ def Test_epxr7_funcref()
   CheckDefAndScriptSuccess(lines)
 enddef
 
+let g:test_space_dict = {'': 'empty', ' ': 'space'}
+let g:test_hash_dict = #{one: 1, two: 2}
+
 def Test_expr7_dict()
   # dictionary
   var lines =<< trim END
@@ -1884,17 +1894,17 @@ def Test_expr7_dict()
       assert_equal(g:dict_one, {'one': 1})
       var key = 'one'
       var val = 1
-      assert_equal(g:dict_one, {key: val})
+      assert_equal(g:dict_one, {[key]: val})
 
-      var numbers: dict<number> = #{a: 1, b: 2, c: 3}
+      var numbers: dict<number> = {a: 1, b: 2, c: 3}
       numbers = #{a: 1}
       numbers = #{}
 
-      var strings: dict<string> = #{a: 'a', b: 'b', c: 'c'}
+      var strings: dict<string> = {a: 'a', b: 'b', c: 'c'}
       strings = #{a: 'x'}
       strings = #{}
 
-      var mixed: dict<any> = #{a: 'a', b: 42}
+      var mixed: dict<any> = {a: 'a', b: 42}
       mixed = #{a: 'x'}
       mixed = #{a: 234}
       mixed = #{}
@@ -1908,6 +1918,9 @@ def Test_expr7_dict()
       dictdict = #{one: #{}, two: #{}}
 
       assert_equal({'': 0}, {matchstr('string', 'wont match'): 0})
+
+      assert_equal(g:test_space_dict, {['']: 'empty', [' ']: 'space'})
+      assert_equal(g:test_hash_dict, {one: 1, two: 2})
   END
   CheckDefAndScriptSuccess(lines)
  
@@ -1922,7 +1935,7 @@ def Test_expr7_dict()
   CheckDefFailure(["var x = #{xxx: 1", "var y = 2"], 'E722:', 2)
   CheckDefFailure(["var x = #{xxx: 1,"], 'E723:', 2)
   CheckDefFailure(["var x = {'a': xxx}"], 'E1001:', 1)
-  CheckDefFailure(["var x = {xxx: 8}"], 'E1001:', 1)
+  CheckDefFailure(["var x = {xx-x: 8}"], 'E1001:', 1)
   CheckDefFailure(["var x = #{a: 1, a: 2}"], 'E721:', 1)
   CheckDefFailure(["var x = #"], 'E1015:', 1)
   CheckDefExecFailure(["var x = g:anint.member"], 'E715:', 1)
@@ -2293,12 +2306,29 @@ def Test_expr7_parens_vim9script()
   CheckScriptSuccess(lines)
 enddef
 
-def Test_expr7_negate()
+def Test_expr7_negate_add()
   assert_equal(-99, -99)
+  assert_equal(-99, - 99)
   assert_equal(99, --99)
+  assert_equal(99, -- 99)
+  assert_equal(99, - - 99)
+  assert_equal(99, +99)
+  assert_equal(-99, -+99)
+  assert_equal(-99, -+ 99)
+  assert_equal(-99, - +99)
+  assert_equal(-99, - + 99)
+  assert_equal(-99, +-99)
+  assert_equal(-99, + -99)
+  assert_equal(-99, + - 99)
+
   var nr = 88
   assert_equal(-88, -nr)
-  assert_equal(88, --nr)
+  assert_equal(-88, - nr)
+  assert_equal(-88, - +nr)
+  assert_equal(88, -- nr)
+  assert_equal(88, + nr)
+  assert_equal(88, --+ nr)
+  assert_equal(88, - - nr)
 enddef
 
 def Echo(arg: any): string

src/testdir/test_vim9_func.vim

@@ -1569,7 +1569,7 @@ enddef
 def TreeWalk(dir: string): list<any>
   return readdir(dir)->map({_, val ->
             fnamemodify(dir .. '/' .. val, ':p')->isdirectory()
-               ? {val: TreeWalk(dir .. '/' .. val)}
+               ? {[val]: TreeWalk(dir .. '/' .. val)}
                : val
              })
 enddef

src/testdir/test_vim9_script.vim

@@ -416,7 +416,7 @@ def Test_try_catch()
 
   var nd: dict<any>
   try
-    nd = {g:anumber: 1}
+    nd = {[g:anumber]: 1}
   catch /E1012:/
     n = 266
   endtry
@@ -459,7 +459,7 @@ def Test_try_catch()
   assert_equal(322, n)
 
   try
-    d = {'text': 1, g:astring: 2}
+    d = {text: 1, [g:astring]: 2}
   catch /E721:/
     n = 333
   endtry

src/typval.c

@@ -213,7 +213,10 @@ tv_get_bool_or_number_chk(typval_T *varp, int *denote, int want_bool)
 	case VAR_SPECIAL:
 	    if (!want_bool && in_vim9script())
 	    {
-		emsg(_("E611: Using a Special as a Number"));
+		if (varp->v_type == VAR_BOOL)
+		    emsg(_(e_using_bool_as_number));
+		else
+		    emsg(_("E611: Using a Special as a Number"));
 		break;
 	    }
 	    return varp->vval.v_number == VVAL_TRUE ? 1 : 0;

src/version.c

@@ -750,6 +750,26 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    2016,
+/**/
+    2015,
+/**/
+    2014,
+/**/
+    2013,
+/**/
+    2012,
+/**/
+    2011,
+/**/
+    2010,
+/**/
+    2009,
+/**/
+    2008,
+/**/
+    2007,
 /**/
     2006,
 /**/

src/vim9compile.c

@@ -2771,7 +2771,7 @@ theend:
  * Return a pointer to just after the name.  Equal to "arg" if there is no
  * valid name.
  */
-    static char_u *
+    char_u *
 to_name_end(char_u *arg, int namespace)
 {
     char_u	*p;
@@ -2988,7 +2988,8 @@ compile_dict(char_u **arg, cctx_T *cctx, int literal, ppconst_T *ppconst)
     *arg = skipwhite(*arg + 1);
     for (;;)
     {
-	char_u *key = NULL;
+	char_u	    *key = NULL;
+	char_u	    *end;
 
 	if (may_get_next_line(whitep, arg, cctx) == FAIL)
 	{
@@ -2999,10 +3000,14 @@ compile_dict(char_u **arg, cctx_T *cctx, int literal, ppconst_T *ppconst)
 	if (**arg == '}')
 	    break;
 
-	if (literal)
+	// Eventually {name: value} will use "name" as a literal key and
+	// {[expr]: value} for an evaluated key.
+	// Temporarily: if "name" is indeed a valid key, or "[expr]" is
+	// used, use the new method, like JavaScript.  Otherwise fall back
+	// to the old method.
+	end = to_name_end(*arg, FALSE);
+	if (literal || *end == ':')
 	{
-	    char_u *end = to_name_end(*arg, !literal);
-
 	    if (end == *arg)
 	    {
 		semsg(_(e_invalid_key_str), *arg);
@@ -3015,8 +3020,11 @@ compile_dict(char_u **arg, cctx_T *cctx, int literal, ppconst_T *ppconst)
 	}
 	else
 	{
-	    isn_T		*isn;
+	    isn_T	*isn;
+	    int		has_bracket = **arg == '[';
 
+	    if (has_bracket)
+		*arg = skipwhite(*arg + 1);
 	    if (compile_expr0(arg, cctx) == FAIL)
 		return FAIL;
 	    isn = ((isn_T *)instr->ga_data) + instr->ga_len - 1;
@@ -3025,11 +3033,21 @@ compile_dict(char_u **arg, cctx_T *cctx, int literal, ppconst_T *ppconst)
 	    else
 	    {
 		type_T *keytype = ((type_T **)stack->ga_data)
-							   [stack->ga_len - 1];
+						       [stack->ga_len - 1];
 		if (need_type(keytype, &t_string, -1, cctx,
-							 FALSE, FALSE) == FAIL)
+						     FALSE, FALSE) == FAIL)
 		    return FAIL;
 	    }
+	    if (has_bracket)
+	    {
+		*arg = skipwhite(*arg);
+		if (**arg != ']')
+		{
+		    emsg(_(e_missing_matching_bracket_after_dict_key));
+		    return FAIL;
+		}
+		++*arg;
+	    }
 	}
 
 	// Check for duplicate keys, if using string keys.
@@ -3362,6 +3380,8 @@ compile_leader(cctx_T *cctx, int numeric_only, char_u *start, char_u **end)
     while (p > start)
     {
 	--p;
+	while (VIM_ISWHITE(*p))
+	    --p;
 	if (*p == '-' || *p == '+')
 	{
 	    int	    negate = *p == '-';
@@ -4694,21 +4714,24 @@ compile_return(char_u *arg, int set_return_type, cctx_T *cctx)
 	if (compile_expr0(&p, cctx) == FAIL)
 	    return NULL;
 
-	stack_type = ((type_T **)stack->ga_data)[stack->ga_len - 1];
-	if (set_return_type)
-	    cctx->ctx_ufunc->uf_ret_type = stack_type;
-	else
+	if (cctx->ctx_skip != SKIP_YES)
 	{
-	    if (cctx->ctx_ufunc->uf_ret_type->tt_type == VAR_VOID
-		    && stack_type->tt_type != VAR_VOID
-		    && stack_type->tt_type != VAR_UNKNOWN)
+	    stack_type = ((type_T **)stack->ga_data)[stack->ga_len - 1];
+	    if (set_return_type)
+		cctx->ctx_ufunc->uf_ret_type = stack_type;
+	    else
 	    {
-		emsg(_(e_returning_value_in_function_without_return_type));
-		return NULL;
-	    }
-	    if (need_type(stack_type, cctx->ctx_ufunc->uf_ret_type, -1,
+		if (cctx->ctx_ufunc->uf_ret_type->tt_type == VAR_VOID
+			&& stack_type->tt_type != VAR_VOID
+			&& stack_type->tt_type != VAR_UNKNOWN)
+		{
+		    emsg(_(e_returning_value_in_function_without_return_type));
+		    return NULL;
+		}
+		if (need_type(stack_type, cctx->ctx_ufunc->uf_ret_type, -1,
 						   cctx, FALSE, FALSE) == FAIL)
-		return NULL;
+		    return NULL;
+	    }
 	}
     }
     else
@@ -4725,8 +4748,7 @@ compile_return(char_u *arg, int set_return_type, cctx_T *cctx)
 	// No argument, return zero.
 	generate_PUSHNR(cctx, 0);
     }
-
-    if (generate_instr(cctx, ISN_RETURN) == NULL)
+    if (cctx->ctx_skip != SKIP_YES && generate_instr(cctx, ISN_RETURN) == NULL)
 	return NULL;
 
     // "return val | endif" is possible