Strip IRC colors sent to Mattermost

bridge/mattermost/mattermost.go

@@ -3,6 +3,7 @@ package bmattermost
 import (
 	"errors"
 	"fmt"
+	"regexp"
 
 	"github.com/42wim/matterbridge/bridge"
 	"github.com/42wim/matterbridge/bridge/config"
@@ -98,6 +99,10 @@ func (b *Bmattermost) Send(msg config.Message) (string, error) {
 	}
 	b.Log.Debugf("=> Receiving %#v", msg)
 
+	// Strip IRC colors sent to Mattermost
+	re := regexp.MustCompile(`\x03(?:\d{1,2}(?:,\d{1,2})?)?|[[:cntrl:]]`)
+	msg.Text = re.ReplaceAllString(msg.Text, "")
+
 	// Make a action /me of the message
 	if msg.Event == config.EventUserAction {
 		msg.Text = "*" + msg.Text + "*"