trim both prefix and suffix without using intermediate variable

[Peng Yu]

https://stackoverflow.com/questions/40055221/is-there-a-way-to-remove-both-the-prefix-and-suffix-in-one-shot-in-bash-using

I see that it says impossible to trim both a prefix and a suffix from
a string without using an intermediate variable. Is it so?

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Regards,
Peng