xcode 10 复制一行

sudo chmod 666 /Applications/Xcode.app/Contents/Frameworks/IDEKit.framework/Resources/IDETextKeyBindingSet.plist

sudo chmod 777 /Applications/Xcode.app/Contents/Frameworks/IDEKit.framework/Resources/

open /Applications/Xcode.app/Contents/Frameworks/IDEKit.framework/Resources/IDETextKeyBindingSet.plist

复制一行

在Insertions and Indentations下面增加：Duplicate Current Line，String类型 值为：
##失效
selectLine:, copy:, moveToEndOfLine:, insertNewline:, paste:, deleteBackward:
##有效
moveToBeginningOfLine:, deleteToEndOfLine:, yank:, insertNewline:, moveToBeginningOfLine:, yank:

删除一行

在Deletions下面增加：“Delete Current Line” String类型值：
deleteToBeginningOfLine:, moveToEndOfLine:, deleteToBeginningOfLine:, deleteBackward:, moveDown:, moveToBeginningOfLine: