Chore: Allow setting of multiple message tags via plus addresses (#253)

Author: axllent

Diff for: internal/storage/tags.go

@@ -13,7 +13,7 @@ import (
 )
 
 var (
-	addressPlusRe = regexp.MustCompile(`^(.*){1,}\+(.*)@`)
+	addressPlusRe = regexp.MustCompile(`(?U)^(.*){1,}\+(.*)@`)
 )
 
 // SetMessageTags will set the tags for a given database ID
@@ -246,25 +246,25 @@ func (d DBMailSummary) tagsFromPlusAddresses() string {
 	tags := []string{}
 	for _, c := range d.To {
 		matches := addressPlusRe.FindAllStringSubmatch(c.String(), 1)
-		if len(matches) == 1 && config.ValidTagRegexp.MatchString(matches[0][2]) {
-			tags = append(tags, matches[0][2])
+		if len(matches) == 1 {
+			tags = append(tags, strings.Split(matches[0][2], "+")...)
 		}
 	}
 	for _, c := range d.Cc {
 		matches := addressPlusRe.FindAllStringSubmatch(c.String(), 1)
-		if len(matches) == 1 && config.ValidTagRegexp.MatchString(matches[0][2]) {
-			tags = append(tags, matches[0][2])
+		if len(matches) == 1 {
+			tags = append(tags, strings.Split(matches[0][2], "+")...)
 		}
 	}
 	for _, c := range d.Bcc {
 		matches := addressPlusRe.FindAllStringSubmatch(c.String(), 1)
-		if len(matches) == 1 && config.ValidTagRegexp.MatchString(matches[0][2]) {
-			tags = append(tags, matches[0][2])
+		if len(matches) == 1 {
+			tags = append(tags, strings.Split(matches[0][2], "+")...)
 		}
 	}
 	matches := addressPlusRe.FindAllStringSubmatch(d.From.String(), 1)
-	if len(matches) == 1 && config.ValidTagRegexp.MatchString(matches[0][2]) {
-		tags = append(tags, matches[0][2])
+	if len(matches) == 1 {
+		tags = append(tags, strings.Split(matches[0][2], "+")...)
 	}
 
 	return strings.Join(tags, ",")