Fix for page in multiple menus

Fixes #1934

hugolib/menu_test.go

@@ -344,6 +344,38 @@ func TestMenuURL(t *testing.T) {
 
 }
 
+// Issue #1934
+func TestYAMLMenuWithMultipleEntries(t *testing.T) {
+	viper.Reset()
+	defer viper.Reset()
+
+	ps1 := []byte(`---
+title: "Yaml 1"
+weight: 5
+menu: ["p_one", "p_two"]
+---
+Yaml Front Matter with Menu Pages`)
+
+	ps2 := []byte(`---
+title: "Yaml 2"
+weight: 5
+menu:
+    p_three:
+    p_four:
+---
+Yaml Front Matter with Menu Pages`)
+
+	s := setupMenuTests(t, []source.ByteSource{
+		{filepath.FromSlash("sect/yaml1.md"), ps1},
+		{filepath.FromSlash("sect/yaml2.md"), ps2}})
+
+	p1 := s.Pages[0]
+	assert.Len(t, p1.Menus(), 2, "List YAML")
+	p2 := s.Pages[1]
+	assert.Len(t, p2.Menus(), 2, "Map YAML")
+
+}
+
 // issue #719
 func TestMenuWithUnicodeURLs(t *testing.T) {
 

hugolib/page.go

@@ -759,8 +759,8 @@ func (p *Page) Menus() PageMenus {
 				for _, mname := range mnames {
 					me.Menu = mname
 					p.pageMenus[mname] = &me
-					return
 				}
+				return
 			}
 
 			// Could be a structured menu entry
@@ -772,14 +772,15 @@ func (p *Page) Menus() PageMenus {
 
 			for name, menu := range menus {
 				menuEntry := MenuEntry{Name: p.LinkTitle(), URL: link, Weight: p.Weight, Menu: name}
+				if menu != nil {
 					jww.DEBUG.Printf("found menu: %q, in %q\n", name, p.Title)
-
 					ime, err := cast.ToStringMapE(menu)
 					if err != nil {
-					jww.ERROR.Printf("unable to process menus for %q\n", p.Title)
+						jww.ERROR.Printf("unable to process menus for %q: %s", p.Title, err)
 					}
 
 					menuEntry.MarshallMap(ime)
+				}
 				p.pageMenus[name] = &menuEntry
 			}
 		}