Move to previous lyric when pressing backspace and current lyric is empty

Author: miiizen

src/app/configs/data/shortcuts.xml

@@ -946,11 +946,9 @@
   <SC>
     <key>prev-text-element</key>
     <seq>Shift+Space</seq>
-    </SC>
-  <SC>
-    <key>prev-text-element</key>
     <seq>Left</seq>
-  </SC>
+    <seq>Backspace</seq>
+    </SC>
   <SC>
     <key>next-syllable</key>
     <seq>-</seq>

src/app/configs/data/shortcuts_azerty.xml

@@ -983,6 +983,8 @@
   <SC>
     <key>prev-text-element</key>
     <seq>Shift+Space</seq>
+    <seq>Left</seq>
+    <seq>Backspace</seq>
     </SC>
   <SC>
     <key>toggle-visible</key>

src/app/configs/data/shortcuts_mac.xml

@@ -947,11 +947,9 @@
   <SC>
     <key>prev-text-element</key>
     <seq>Shift+Space</seq>
-    </SC>
-  <SC>
-    <key>prev-text-element</key>
     <seq>Left</seq>
-  </SC>
+    <seq>Backspace</seq>
+    </SC>
   <SC>
     <key>next-syllable</key>
     <seq>-</seq>

src/engraving/dom/lyrics.cpp

@@ -280,7 +280,7 @@ bool Lyrics::isEditAllowed(EditData& ed) const
         }
     }
 
-    if (ed.key == Key_Left) {
+    if (ed.key == Key_Left || ed.key == Key_Backspace) {
         return cursor()->column() != 0 || cursor()->hasSelection();
     }