patch 7.4.1271

Problem:    assert_false(v:false) reports an error. (Nikolai Pavlov)
Solution:   Recognize v:true and v:false. (Closes #625)

src/eval.c

@@ -9216,6 +9216,9 @@ assert_bool(typval_T *argvars, int isTrue)
     int		error = FALSE;
     garray_T	ga;
 
+    if (argvars[0].v_type == VAR_SPECIAL
+	    && argvars[0].vval.v_number == (isTrue ? VVAL_TRUE : VV_FALSE))
+	return;
     if (argvars[0].v_type != VAR_NUMBER
 	    || (get_tv_number_chk(&argvars[0], &error) == 0) == isTrue
 	    || error)

src/testdir/test_assert.vim

@@ -2,11 +2,13 @@
 
 func Test_assert_false()
   call assert_false(0)
+  call assert_false(v:false)
 endfunc
 
 func Test_assert_true()
   call assert_true(1)
   call assert_true(123)
+  call assert_true(v:true)
 endfunc
 
 func Test_assert_equal()

src/version.c

@@ -742,6 +742,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    1271,
 /**/
     1270,
 /**/