Fixup for #1342.

pkg/eval/builtin_fn_io.go

@@ -658,8 +658,12 @@ func fromLines(fm *Frame) error {
 // ```
 //
 // Takes bytes stdin, parses it as JSON and puts the result on structured stdout.
-// The input can contain multiple JSONs, which can, but do not have to, be
-// separated with whitespaces.
+// The input can contain multiple JSONs, and whitespace between them are ignored.
+//
+// Note that JSON's only number type corresponds to Elvish's floating-point
+// number type, and is always considered [inexact](language.html#exactness).
+// It may be necessary to coerce JSON numbers to exact numbers using
+// [exact-num](#exact-num).
 //
 // Examples:
 //
@@ -715,7 +719,6 @@ func fromJSONInterface(v interface{}) (interface{}, error) {
 	case nil, bool, string:
 		return v, nil
 	case float64:
-		// TODO: Decide if we want to normalize ints here.
 		return v, nil
 	case []interface{}:
 		vec := vals.EmptyList

pkg/eval/builtin_fn_styled_test.go

@@ -69,9 +69,9 @@ func TestStyledConcat(t *testing.T) {
 		// segment+text
 		That("print (styled-segment abc &underlined=$true)(styled abc bright-cyan)").Prints("\033[4mabc\033[m\033[96mabc\033[m"),
 		// segment+num
-		That("print (float64 99)(styled-segment abc &blink)").Prints("99.0\033[5mabc\033[m"),
+		That("print (num 99.0)(styled-segment abc &blink)").Prints("99.0\033[5mabc\033[m"),
 		That("print (num 66)(styled-segment abc &blink)").Prints("66\033[5mabc\033[m"),
-		That("print (num 33)(styled-segment abc &blink)").Prints("33\033[5mabc\033[m"),
+		That("print (num 3/2)(styled-segment abc &blink)").Prints("3/2\033[5mabc\033[m"),
 		// num+segment
 		That("print (styled-segment abc &blink)(float64 88)").Prints("\033[5mabc\033[m88.0"),
 		That("print (styled-segment abc &blink)(num 44/3)").Prints("\033[5mabc\033[m44/3"),

pkg/eval/vals/equal_test.go

@@ -27,8 +27,9 @@ func TestEqual(t *testing.T) {
 		Args("1.0", 1.0).Rets(false),
 		Args(1, 1.0).Rets(false),
 		Args(1, 1).Rets(true),
-		Args(big.NewInt(1), big.NewInt(1)).Rets(true),
-		Args(big.NewInt(1), 1).Rets(false),
+		Args(bigInt(z), bigInt(z)).Rets(true),
+		Args(bigInt(z), 1).Rets(false),
+		Args(bigInt(z), bigInt(z1)).Rets(false),
 		Args(big.NewRat(1, 2), big.NewRat(1, 2)).Rets(true),
 		Args(big.NewRat(1, 2), 0.5).Rets(false),
 

pkg/eval/vals/string.go

@@ -20,9 +20,8 @@ func ToString(v interface{}) string {
 	case int:
 		return strconv.Itoa(v)
 	case float64:
-		// Float64 is special-cased for historical reasons. The other number types are handled by
-		// the Stringer interface.
 		return formatFloat64(v)
+		// Other number types handled by "case Stringer"
 	case string:
 		return v
 	case Stringer: