Show repeats about arguing off and on (5)

I believe the answer is:

rerun

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'show' is the definition.
(rerun is a kind of show)

'about arguing off and on' is the wordplay.
'about' becomes 're' (regarding).
'off and on' indicates alternate letters (letters used at regular intervals).
The alternating letters of 'arguing' are 'run'.
're'+'run'='RERUN'

'repeats' acts as a link.
This may not be correct. It may belong to another bit of the clue.

Can you help me to learn more?

(Other definitions for rerun that I've seen before include "Extra showing" , "Repeat of, say, a film" , "second showing" , "Programme shown again" , "Repeat (of race etc)" .)

I've seen this clue in The Independent.

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