[frederikvs]

I just have vim-angry installed. It gives me "cia" and friends, though without the count you mention.

Sounds like treesitter will have more flexibility, but for now the vim-angry plugin does what I need it to :-)

[staticshock]

Seconded. vim-angry is an excellent plugin that exposes args as text objects.

In an expression such as (foo, ba|r, baz), where | is the cursor, it does the following:

via - (foo, |bar|, baz)

vaa - (foo|, bar|, baz)

vaA - (foo, |bar, |baz)