1 files changed, 30 insertions, 2 deletions
diff --git a/src/pkg/strings/example_test.go b/src/pkg/strings/example_test.go
index 36e0a42fb..7243e16b1 100644
--- a/src/pkg/strings/example_test.go
+++ b/src/pkg/strings/example_test.go
@@ -7,6 +7,7 @@ package strings_test
 import (
 	"fmt"
 	"strings"
+	"unicode"
 )
 
 func ExampleFields() {
@@ -14,6 +15,14 @@ func ExampleFields() {
 	// Output: Fields are: ["foo" "bar" "baz"]
 }
 
+func ExampleFieldsFunc() {
+	f := func(c rune) bool {
+		return !unicode.IsLetter(c) && !unicode.IsNumber(c)
+	}
+	fmt.Printf("Fields are: %q", strings.FieldsFunc("  foo1;bar2,baz3...", f))
+	// Output: Fields are: ["foo1" "bar2" "baz3"]
+}
+
 func ExampleContains() {
 	fmt.Println(strings.Contains("seafood", "foo"))
 	fmt.Println(strings.Contains("seafood", "bar"))
@@ -59,6 +68,25 @@ func ExampleIndex() {
 	// -1
 }
 
+func ExampleIndexFunc() {
+	f := func(c rune) bool {
+		return unicode.Is(unicode.Han, c)
+	}
+	fmt.Println(strings.IndexFunc("Hello, 世界", f))
+	fmt.Println(strings.IndexFunc("Hello, world", f))
+	// Output:
+	// 7
+	// -1
+}
+
+func ExampleIndexAny() {
+	fmt.Println(strings.IndexAny("chicken", "aeiouy"))
+	fmt.Println(strings.IndexAny("crwth", "aeiouy"))
+	// Output:
+	// 2
+	// -1
+}
+
 func ExampleIndexRune() {
 	fmt.Println(strings.IndexRune("chicken", 'k'))
 	fmt.Println(strings.IndexRune("chicken", 'd'))
@@ -141,8 +169,8 @@ func ExampleToTitle() {
 }
 
 func ExampleTrim() {
-	fmt.Printf("[%q]", strings.Trim(" !!! Achtung !!! ", "! "))
-	// Output: ["Achtung"]
+	fmt.Printf("[%q]", strings.Trim(" !!! Achtung! Achtung! !!! ", "! "))
+	// Output: ["Achtung! Achtung"]
 }
 
 func ExampleMap() {