What should I do to give ' ' to all variable name in ( ) at once?

For example, let me suppose I wanna code like this :

select("a", "b" ..., " z")
but typing all "" at every single moment when I type each letters.
As I know, there is a way to give "" to all variables in ( ), just with blocking "select(a, b, ..., z)" first, and typing certain hotkey after that, but I cannot remember. So please someone tell me how to do that...
Thank you

As far as I know, there is no shortcut for that (but I could be wrong).
But you can use the function Cs() from the package Hmisc:


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