Update userMentionRE to play nice with punctuation.

Reviewed-on: #5

bridge/discord/helpers.go

@@ -160,7 +160,7 @@ func (b *Bdiscord) getCategoryChannelName(name, parentID string) string {
 var (
 	// See https://discordapp.com/developers/docs/reference#message-formatting.
 	channelMentionRE = regexp.MustCompile("<#[0-9]+>")
-	userMentionRE    = regexp.MustCompile("@[^@\n]{1,32}")
+	userMentionRE    = regexp.MustCompile("\(*@[^@\n]{1,32}(\,|\:|;\))*")
 	emoteRE          = regexp.MustCompile(`<a?(:\w+:)\d+>`)
 )
 

bridge/xmpp/xmpp.go

@@ -14,6 +14,7 @@ import (
 	"github.com/42wim/matterbridge/bridge"
 	"github.com/42wim/matterbridge/bridge/config"
 	"github.com/42wim/matterbridge/bridge/helper"
+	lru "github.com/hashicorp/golang-lru"
 	"github.com/jpillora/backoff"
 	"github.com/matterbridge/go-xmpp"
 	"github.com/rs/xid"
@@ -28,13 +29,20 @@ type Bxmpp struct {
 	connected bool
 	sync.RWMutex
 
+	StanzaIDs          *lru.Cache
+	OriginIDs          *lru.Cache
+
 	avatarAvailability map[string]bool
 	avatarMap          map[string]string
 }
 
 func New(cfg *bridge.Config) bridge.Bridger {
+	stanzaIDs, _ := lru.New(5000)
+	originIDs, _ := lru.New(5000)
 	return &Bxmpp{
 		Config:             cfg,
+		StanzaIDs:          stanzaIDs,
+		OriginIDs:          originIDs,
 		xmppMap:            make(map[string]string),
 		avatarAvailability: make(map[string]bool),
 		avatarMap:          make(map[string]string),
@@ -124,12 +132,20 @@ func (b *Bxmpp) Send(msg config.Message) (string, error) {
 		return "", nil
 	}
 
+	if msg.ParentNotFound() {
+		msg.ParentID = ""
+	}
+
 	// Post normal message.
 	var msgReplaceID string
 	msgID := xid.New().String()
 	if msg.ID != "" {
 		msgReplaceID = msg.ID
 	}
+	var replyID string
+	if res, ok := b.StanzaIDs.Get(msg.ParentID); ok {
+		replyID, _ = res.(string)
+	}
 	b.Log.Debugf("=> Sending message %#v", msg)
 	if _, err := b.xc.Send(xmpp.Chat{
 		Type:      "groupchat",
@@ -137,6 +153,7 @@ func (b *Bxmpp) Send(msg config.Message) (string, error) {
 		Text:      msg.Username + msg.Text,
 		ID:        msgID,
 		ReplaceID: msgReplaceID,
+		ReplyID:   replyID,
 	}); err != nil {
 		return "", err
 	}
@@ -297,6 +314,11 @@ func (b *Bxmpp) handleXMPP() error {
 			if v.Type == "groupchat" {
 				b.Log.Debugf("== Receiving %#v", v)
 
+				if v.ID != "" && v.StanzaID != "" {
+					b.StanzaIDs.Add(v.ID, v.StanzaID)
+					b.OriginIDs.Add(v.StanzaID, v.ID)
+				}
+
 				// Skip invalid messages.
 				if b.skipMessage(v) {
 					continue
@@ -321,6 +343,12 @@ func (b *Bxmpp) handleXMPP() error {
 				if v.ReplaceID != "" {
 					msgID = v.ReplaceID
 				}
+
+				var parentID string
+				if res, ok := b.OriginIDs.Get(v.ReplyID); ok {
+					parentID, _ = res.(string)
+				}
+
 				rmsg := config.Message{
 					Username: b.parseNick(v.Remote),
 					Text:     v.Text,
@@ -328,6 +356,7 @@ func (b *Bxmpp) handleXMPP() error {
 					Account:  b.Account,
 					Avatar:   avatar,
 					UserID:   v.Remote,
+					ParentID: parentID,
 					ID:       msgID,
 					Event:    event,
 				}