'But, no matter' Versus 'But, doesn't matter'

Hi

Are the given expressions correct and interchangeable?

1- I have nothing to eat…but, doesn’t matter!
2- I have nothing to eat…but, no matter!

Tom

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I have repaired your punctuation and supplied a necessary pronoun. They are now essentially synonymous:

1- I have nothing to eat, but it/that doesn’t matter!
2- I have nothing to eat, but no matter!
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Why did you place commas after but, Tom? I wonder. :smiley:

[b]

[/b]

I liked the collocation essentially synonymous! :smiley:

I would like to ask another question:

When in ( it is) no matter, the it part can be optional, why not in i doesn’t matter[/i]?

Tom

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I don’t see that it is optional; only it is as a unit is optional.

However, without delving too deeply, I presume that it is because matter is a noun in complement in the first form while in the second form, matter is the verb. No matter is acceptable as elision; not matter is not.
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