Microsoft Word : Assigning a KEYBOARD shortcut for deleting one line of text

Macro-based shortcut

1. Create a new Macro with the following code (Alt+F8, specify the name, click Create):

   Selection.HomeKey Unit:=wdLine 
   Selection.EndKey Unit:=wdLine, Extend:=wdExtend 
   Selection.Delete Unit:=wdCharacter, Count:=1
   

2. Assign a keyboard shortcut to it:
   • File > Option > Customize Ribbon
   • Click on Keyboard shortcuts: Customize (bottom left)
   • Scroll down the Categories list and select Macros, choose your new macro
   • Press the shortcut key combination (e.g. Ctrl+D)
   • Click Assign
   • Close > OK