#72 Call moji.Squeeze() to remove redundant space characters

Author: azumakuniyuki

lhost/order.go

@@ -8,6 +8,7 @@
 
 package lhost
 import "strings"
+import "libsisimai.org/sisimai/moji"
 
 var defaultorder = []string{
 	// There are another patterns in the value of "Subject:" header of a bounce mail generated by
@@ -67,10 +68,7 @@ func OrderBySubject(title string) []string {
 	// The following order is decided by the first 2 words of Subject: header
 	for _, e := range []string{"[", "]", "_"} { title = strings.Replace(title, e, " ", -1) }
 
-	// Squeeze duplicated space characters
-	for strings.Contains(title, "  ") { title = strings.ReplaceAll(title, "  ", " ") }
-
-	title  = strings.TrimSpace(title) // Remove leading space characters
+	if strings.Contains(title, "  ") { title = moji.Squeeze(title, ' ') }
 	words := strings.SplitN(strings.ToLower(title), " ", 3)
 	first := ""