Hadn’t or hadn’t have- are both correct?

[JoxerGoesToStuttgart]

I’m not sure if it’s just that I’m noticing it more, or people are using it more but I’m seeing and hearing “hadn’t have” a lot more frequently and it just doesn’t sound right to my ear. E.g. “if you hadn’t have told me about that shop, I wouldn’t have found these shoes”

Is it correct? To me the first “have” in that example is unnecessary.

I agree with you OP.

It is correct afaik, but uncommon. I would have expected to see it in things written in the early-mid C20.
At least it's better than 'you should of told me'

Yes Rift it is!

I’ve just seen “hadn’t have” printed on a novelty card and it looked all wrong so I thought I’d check.

You’ve just reminded me of my favourite demonstration of the importance of punctuation!

James while John had had had had had had had had had had had a better effect on the teacher

Or, with punctuation
James, while John had had "had", had had "had had"; "had had" had had a better effect on the teacher

Judas.

It's nonstandard. The ‘have' in the subordinate clause: 'if you hadn’t have told me about that shop ' is redundant because the clause already conveys the 'past perfect' aspect with: 'if you hadn’t told me about that shop'.

If you were to cast the clause into the 'present perfect' it would be: 'if you haven't have told me about that shop', and that looks more like a typing error rather than a tense in the English language. Two sensible constructions are possible: 'if you hadn’t told me about that shop’ and 'Had you not told me about that shop', ....

In this type of negative conditional sentence, the past perfect is the only tense necessary to convey the intended meaning; "hadn't have told" is a sort of past perfect perfect or past super-perfect tense which I don't believe exists in English nor in other languages that I'm aquainted with.

The tense required in the subordinate clause of this negative conditional sentence is the 'past perfect' which is constructed using the following elements:

The past tense of have i.e. had;
The past participle of the the main verb 'to tell', which is told.

All the foregoing seems a bit prescriptive and technical, I know, but in these complex sentences ecomomy is the best strategy, and if that means that the unfashionable subjunctive mood be employed, then so be it.

'The space between fish and and and and and and chips is too narrow'

@iklboo

Have not heard that one since school when dinosaurs roamed the land

Yep @Thelittleweasel - I was walking God's dog at the time

Isn’t that one too many “and”s?

It's 'The space between "fish" and "and" and "and" and "chips" is too small'

It's about someone painting a sign.

Just dialect. It's not 'correct' in written form but it's common in spoken form. At least you're not seeing it written as 'hadn't of'