Scheme controllable text spanner padding

[dtsmarin]

Hello,

How can I create a function such as: \Rpad #2 which will control the padding
of a text spanner?

 It's only for reducing my code's size since using the \override blah blah
takes a lot of space if used many times!
To be absolutely clear this will not used for common things that work well
but for a custom spanner that needs tweaking every time I use it so having a
shorter command made sense to me.

Here is a template:
Rpad = #(define-music-function (parser location %??% ) (number?)
#{
..... %%%%
#})
triggered by: 

\Rpad #2 

I hope this can be achieved relatively easy.

Thanks 



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