Add partial prefixes in some places to regular-expressions

See #394 for details.

This closes #288 by providing a lighter-weight approach.

examples/regular-expressions/regular-expressions.go

@@ -31,7 +31,7 @@ func main() {
 	// This also finds the first match but returns the
 	// start and end indexes for the match instead of the
 	// matching text.
-	fmt.Println(r.FindStringIndex("peach punch"))
+	fmt.Println("idx:", r.FindStringIndex("peach punch"))
 
 	// The `Submatch` variants include information about
 	// both the whole-pattern matches and the submatches
@@ -50,7 +50,7 @@ func main() {
 
 	// These `All` variants are available for the other
 	// functions we saw above as well.
-	fmt.Println(r.FindAllStringSubmatchIndex(
+	fmt.Println("all:", r.FindAllStringSubmatchIndex(
 		"peach punch pinch", -1))
 
 	// Providing a non-negative integer as the second
@@ -70,7 +70,7 @@ func main() {
 	// returning an error, which makes it safer to use for
 	// global variables.
 	r = regexp.MustCompile("p([a-z]+)ch")
-	fmt.Println(r)
+	fmt.Println("regexp:", r)
 
 	// The `regexp` package can also be used to replace
 	// subsets of strings with other values.

examples/regular-expressions/regular-expressions.hash

@@ -1,2 +1,2 @@
-c0dd720036ac70269ce233bf47c5d6aefd43161f
-LEKGY_d3Nu_P
+5c3bcf9f8c61fc074143f766c4517e445a6d9b0f
+htCqJrLdh9Q

examples/regular-expressions/regular-expressions.sh

@@ -1,15 +1,15 @@
-$ go run regular-expressions.go 
+$ go run regular-expressions.go
 true
 true
 peach
-[0 5]
+idx: [0 5]
 [peach ea]
 [0 5 1 3]
 [peach punch pinch]
-[[0 5 1 3] [6 11 7 9] [12 17 13 15]]
+all: [[0 5 1 3] [6 11 7 9] [12 17 13 15]]
 [peach punch]
 true
-p([a-z]+)ch
+regexp: p([a-z]+)ch
 a <fruit>
 a PEACH