explain variants

examples/regular-expressions/regular-expressions.go

@@ -46,6 +46,11 @@ func main() {
     // example to find all matches for a regexp.
     fmt.Println(r.FindAllString("peach punch pinch", -1))
 
+    // These `All` variants are available for the other
+    // functions we saw above as well.
+    fmt.Println(r.FindAllStringSubmatchIndex(
+        "peach punch pinch", -1))
+
     // Providing a non-negative integer as the second
     // argument to these functions will limit the number
     // of matches.

examples/regular-expressions/regular-expressions.sh

@@ -6,6 +6,7 @@ peach
 [peach ea]
 [0 5 1 3]
 [peach punch pinch]
+[[0 5 1 3] [6 11 7 9] [12 17 13 15]]
 [peach punch]
 true
 p([a-z]+)ch