Fix opening font panel for font setting

CHANGELOG.md

@@ -39,6 +39,7 @@ unreleased
 ### Fixes
 
 - Fix a possible crash with continuous find/replacement.
+- Fix an issue where the font settings cannot be changed on macOS 10.12.
 - Fix an issue where the find result in the input field of the find panel did not clear when a new find string was set from the find history menu.
 
 

CotEditor/CotEditor.help/Contents/Resources/en.lproj/pgs/releasenotes.html

@@ -72,6 +72,7 @@
 
 <ul>
 	<li>Fix a possible crash with continuous find/replacement.</li>
+	<li>Fix an issue where the font settings cannot be changed on macOS 10.12.</li>
 	<li>Fix an issue where the find result in the input field of the find panel did not clear when a new find string was set from the find history menu.</li>
 </ul>
 </section>

CotEditor/CotEditor.help/Contents/Resources/ja.lproj/pgs/releasenotes.html

@@ -72,6 +72,7 @@
 
 <ul>
 	<li>検索/置換を連続で繰り返したときにクラッシュしえた潜在的な不具合を修正</li>
+	<li>macOS 10.12でフォント設定が変更できなかった不具合を修正</li>
 	<li>検索パネルにおいて、検索文字が履歴メニューから入力されたときに過去の検索結果がクリアされなかった不具合を修正</li>
 </ul>
 </section>

CotEditor/Sources/AppearancePaneController.swift

@@ -576,8 +576,9 @@ extension AppearancePaneController {
     /// show font panel
     @IBAction func showFonts(_ sender: Any?) {
         
-        guard let font = NSFont(name: UserDefaults.standard[.fontName]!,
-                                size: UserDefaults.standard[.fontSize]) else { return }
+        let name = UserDefaults.standard[.fontName]
+        let size = UserDefaults.standard[.fontSize]
+        let font = NSFont(name: name ?? "", size: size) ?? NSFont.userFont(ofSize: size)!
         
         NSFontManager.shared.setSelectedFont(font, isMultiple: false)
         NSFontManager.shared.orderFrontFontPanel(sender)

CotEditor/Sources/PrintPaneController.swift

@@ -125,8 +125,9 @@ extension PrintPaneController {
     /// show font panel
     @IBAction func showFonts(_ sender: Any?) {
         
-        guard let font = NSFont(name: UserDefaults.standard[.printFontName]!,
-                                size: UserDefaults.standard[.printFontSize]) else { return }
+        let name = UserDefaults.standard[.printFontName]
+        let size = UserDefaults.standard[.printFontSize]
+        let font = NSFont(name: name ?? "", size: size) ?? NSFont.userFont(ofSize: size)!
         
         NSFontManager.shared.setSelectedFont(font, isMultiple: false)
         NSFontManager.shared.orderFrontFontPanel(sender)