Fix searching for ticket references

Allow hyphen to be considered part of a search word when perfoming
a fuzzy search.

'zb' is trying to limit what it considers a search token to reduce
false positives but not allowing hyphen has stopped searching by
JIRA ticket reference and gathering notes for that ticket.

Author: msp301

notebook/search_test.go

@@ -0,0 +1,22 @@
+package notebook
+
+import (
+	"github.com/msp301/zb/graph"
+	"github.com/msp301/zb/parser"
+	"reflect"
+	"testing"
+)
+
+func TestSearch(t *testing.T) {
+	g := graph.New()
+	g.AddVertex(graph.Vertex{Id: 1, Label: "note", Properties: map[string]interface{}{"Value": parser.Note{Content: "foo bar", Start: 1}}})
+	g.AddVertex(graph.Vertex{Id: 2, Label: "note", Properties: map[string]interface{}{"Value": parser.Note{Content: "# TICKET-123 title", Start: 1}}})
+	book := &Notebook{Notes: g}
+
+	got := book.Search("ticket-123")
+	want := []Result{{Context: "# TICKET-123 title", Line: 1, Value: graph.Vertex{Id: 2, Label: "note", Properties: map[string]interface{}{"Value": parser.Note{Content: "# TICKET-123 title", Start: 1}}}}}
+
+	if !reflect.DeepEqual(got, want) {
+		t.Fatalf("Expected: %+v\nGot: %+v", want, got)
+	}
+}

util/paragraph.go

@@ -6,7 +6,7 @@ import (
 	"strings"
 )
 
-var noiseRegex = regexp.MustCompile(`[^\s\w#.]`)
+var noiseRegex = regexp.MustCompile(`[^\s\w#.-]`)
 
 func ParagraphMatches(content string, query string) bool {
 	content = noiseRegex.ReplaceAllString(content, " ")