Only use fmt.Sprint() when necessary

cmd/frontend/articles.go

@@ -547,7 +547,7 @@ func UploadArticleImage(c *b.Config, s *b.CookieStore) http.HandlerFunc {
 			return
 		}
 
-		url := fmt.Sprint(c.Domain, "/image/serve/", filename)
+		url := c.Domain + "/image/serve/" + filename
 		w.Header().Set("Content-Type", "application/json")
 		json.NewEncoder(w).Encode(url)
 	}

cmd/frontend/issues.go

@@ -61,7 +61,7 @@ func PublishLatestIssue(c *b.Config, db *b.DB, s *b.CookieStore) http.HandlerFun
 
 		article := &b.Article{
 			Title:         title,
-			EncURL:        fmt.Sprint(c.Domain, "/image/serve/", imgFileName),
+			EncURL:        c.Domain + "/image/serve/" + imgFileName,
 			EncLength:     int(imgInfo.Size()),
 			EncType:       mime.TypeByExtension(filepath.Ext(imgAbsName)),
 			Published:     true,

cmd/frontend/pdf.go

@@ -51,7 +51,7 @@ func UploadPDF(c *b.Config, s *b.CookieStore) http.HandlerFunc {
 		}
 
 		filename := fmt.Sprint(uuid.New(), ".pdf")
-		absFilepath, err := filepath.Abs(fmt.Sprint(c.PDFDir, "/", filename))
+		absFilepath, err := filepath.Abs(c.PDFDir + "/" + filename)
 		if err != nil {
 			log.Println(err)
 			http.Error(w, err.Error(), http.StatusInternalServerError)