add middle out compression, I mean babbles

plugins/babbler/babbler.go

@@ -119,7 +119,14 @@ func (p *BabblerPlugin) Message(message msg.Message) bool {
 		saidWhat, saidSomething = p.getBabble(tokens)
 	} else if numTokens > 2 && tokens[1] == "says-tail" {
 		saidWhat, saidSomething = p.getBabbleWithSuffix(tokens)
-	}else if len(tokens) == 4 && strings.Index(lowercase, "initialize babbler for ") == 0 {
+	} else if numTokens >= 2 && tokens[1] == "says-middle-out" {
+			saidWhatStart, saidSomethingStart := p.getBabbleWithSuffix(tokens)
+			saidWhatEnd, saidSomethingEnd := p.getBabble(tokens)
+			saidSomething = saidSomethingStart && saidSomethingEnd
+			if saidSomething {
+				saidWhat = saidWhatStart + " " + strings.Join(strings.Fields(saidWhatEnd)[len(tokens)-2:], " ")
+			}
+	} else if len(tokens) == 4 && strings.Index(lowercase, "initialize babbler for ") == 0 {
 		saidWhat, saidSomething = p.initializeBabbler(tokens)
 	} else if strings.Index(lowercase, "batch learn for ") == 0 {
 		saidWhat, saidSomething = p.batchLearn(tokens)
@@ -142,6 +149,7 @@ func (p *BabblerPlugin) Help(channel string, parts []string) {
 		"merge babbler drseabass into seabass",
 		"seabass says ...",
 		"seabass says-tail ...",
+		"seabass says-middle-out ...",
 		"seabass says-bridge ... | ...",
 	}
 	p.Bot.SendMessage(channel, strings.Join(commands, "\n\n"))

plugins/babbler/babbler_test.go

@@ -237,6 +237,20 @@ func TestBabblerBadBookendSeed(t *testing.T) {
 	assert.Contains(t, mb.Messages[0], "seabass never said 'it's easier ... not unique messages'")
 }
 
+func TestBabblerMiddleOutSeed(t *testing.T) {
+	mb := bot.NewMockBot()
+	c := New(mb)
+	c.config.Babbler.DefaultUsers = []string{"seabass"}
+	assert.NotNil(t, c)
+	seabass := makeMessage("It's easier to test with unique messages")
+	seabass.User = &user.User{Name: "seabass"}
+	res := c.Message(seabass)
+	res = c.Message(makeMessage("!seabass says-middle-out test with"))
+	assert.Len(t, mb.Messages, 1)
+	assert.True(t, res)
+	assert.Contains(t, mb.Messages[0], "it's easier to test with unique messages")
+}
+
 func TestBabblerBatch(t *testing.T) {
 	mb := bot.NewMockBot()
 	c := New(mb)