updated for version 7.3.224

Problem:    Can't pass dict to sort function.
Solution:   Add the optional {dict} argument to sort(). (ZyX)

runtime/doc/eval.txt

@@ -1919,7 +1919,8 @@ shellescape( {string} [, {special}])
 simplify( {filename})		String	simplify filename as much as possible
 sin( {expr})			Float	sine of {expr}
 sinh( {expr})			Float	hyperbolic sine of {expr}
-sort( {list} [, {func}])	List	sort {list}, using {func} to compare
+sort( {list} [, {func} [, {dict}]])
+				List	sort {list}, using {func} to compare
 soundfold( {word})		String	sound-fold {word}
 spellbadword()			String	badly spelled word at cursor
 spellsuggest( {word} [, {max} [, {capital}]])
@@ -5275,7 +5276,7 @@ sinh({expr})						*sinh()*
 		{only available when compiled with the |+float| feature}
 
 
-sort({list} [, {func}])					*sort()* *E702*
+sort({list} [, {func} [, {dict}]])			*sort()* *E702*
 		Sort the items in {list} in-place.  Returns {list}.  If you
 		want a list to remain unmodified make a copy first: >
 			:let sortedlist = sort(copy(mylist))
@@ -5283,6 +5284,8 @@ sort({list} [, {func}])					*sort()* *E702*
 		Numbers sort after Strings, |Lists| after Numbers.
 		For sorting text in the current buffer use |:sort|.
 		When {func} is given and it is one then case is ignored.
+		{dict} is for functions with the "dict" attribute.  It will be
+		used to set the local variable "self". |Dictionary-function|
 		When {func} is a |Funcref| or a function name, this function
 		is called to compare items.  The function is invoked with two
 		items as argument and must return zero if they are equal, 1 or

src/eval.c

@@ -7930,7 +7930,7 @@ static struct fst
     {"sin",		1, 1, f_sin},
     {"sinh",		1, 1, f_sinh},
 #endif
-    {"sort",		1, 2, f_sort},
+    {"sort",		1, 3, f_sort},
     {"soundfold",	1, 1, f_soundfold},
     {"spellbadword",	0, 1, f_spellbadword},
     {"spellsuggest",	1, 3, f_spellsuggest},
@@ -16366,6 +16366,7 @@ static int
 
 static int	item_compare_ic;
 static char_u	*item_compare_func;
+static dict_T	*item_compare_selfdict;
 static int	item_compare_func_err;
 #define ITEM_COMPARE_FAIL 999
 
@@ -16425,7 +16426,8 @@ item_compare2(s1, s2)
 
     rettv.v_type = VAR_UNKNOWN;		/* clear_tv() uses this */
     res = call_func(item_compare_func, (int)STRLEN(item_compare_func),
-				 &rettv, 2, argv, 0L, 0L, &dummy, TRUE, NULL);
+				 &rettv, 2, argv, 0L, 0L, &dummy, TRUE,
+				 item_compare_selfdict);
     clear_tv(&argv[0]);
     clear_tv(&argv[1]);
 
@@ -16471,8 +16473,10 @@ f_sort(argvars, rettv)
 
 	item_compare_ic = FALSE;
 	item_compare_func = NULL;
+	item_compare_selfdict = NULL;
 	if (argvars[1].v_type != VAR_UNKNOWN)
 	{
+	    /* optional second argument: {func} */
 	    if (argvars[1].v_type == VAR_FUNC)
 		item_compare_func = argvars[1].vval.v_string;
 	    else
@@ -16487,6 +16491,17 @@ f_sort(argvars, rettv)
 		else
 		    item_compare_func = get_tv_string(&argvars[1]);
 	    }
+
+	    if (argvars[2].v_type != VAR_UNKNOWN)
+	    {
+		/* optional third argument: {dict} */
+		if (argvars[2].v_type != VAR_DICT)
+		{
+		    EMSG(_(e_dictreq));
+		    return;
+		}
+		item_compare_selfdict = argvars[2].vval.v_dict;
+	    }
 	}
 
 	/* Make an array with each entry pointing to an item in the List. */

src/version.c

@@ -709,6 +709,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    224,
 /**/
     223,
 /**/