check parantheses at the end of sentences

Change-Id: Ifa051a59b8a7de88e031a850d11ca95432a0b32e

Author: Akron

matrix_test.go

@@ -376,6 +376,13 @@ Innstetten!`
 	assert.Equal("»\nNun\n,\ngib\ndich\nzufrieden\n,\nich\nfange\nschon\nan\n...", sentences[0])
 	assert.Equal("Also\nBaron\nInnstetten\n!", sentences[1])
 
+	// Check paranthesis at the end of sentences.
+	w.Reset()
+	assert.True(mat.Transduce(strings.NewReader("(Er ging.) Und kam (später)."), w))
+	sentences = strings.Split(w.String(), "\n\n")
+	assert.Equal(len(sentences), 3)
+	assert.Equal("(\nEr\nging\n.\n)", sentences[0])
+	assert.Equal("Und\nkam\n(\nspäter\n)\n.", sentences[1])
 }
 
 func TestMatrixFullTokenizerMatrixSentenceSplitterBug1(t *testing.T) {

src/tokenizer.xfst

@@ -225,9 +225,9 @@ define DQuotes ["”"|%"|"»"|"«"];
 define NotSmallCaps [? - a - b - c - d - e - f - g - h - i - j - k - l - m - n - o - p - q - r - s - t - u - v - w - x - y - z - ü - ö - ä];
 
 read regex Token .o. [
-  SP NLout [DQuotes | "›" (NLout DQuotes) | %‹ (NLout DQuotes) | %’ (NLout DQuotes) | "'" (NLout DQuotes)] (NLout SP) @-> ... NLout \/ _ NLout \%,
+  SP NLout [DQuotes | "›" (NLout DQuotes) | %‹ (NLout DQuotes) | %’ (NLout DQuotes) | "'" (NLout DQuotes) | ")" ] (NLout SP) @-> ... NLout \/ _ NLout \%,
 ] .o. [
-  SP @-> ... NLout \/ NLout _ NLout [? - "”" - %" - "»" - "«" - "›" - %‹ - %’ - "'" - NLout]
+  SP @-> ... NLout \/ NLout _ NLout [? - "”" - %" - "»" - "«" - "›" - %‹ - %’ - "'" - ")" - NLout]
 ] .o. [
   [%. %. %.] @-> ... NLout \/ _ NLout WS+ NotSmallCaps
 ] .o. [