KRename is a nice and handy tool but when it comes to regular expressions, it fails me often.

The latest thing is a filename like this

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bla.bla.foo{{jkh7845kjhfv98}}

I want to remove the curly brackets and its contents.

On either https://regexr.com/3bvel and https://regex101.com/ the following expression does it like a charm

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\{.*\}

At first I thought I got it wrong but even grep in the console returns proper results with this expression, only KRename doesn't do a thing. I suspected I got it wrong on escaping but a term like

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\d

correctly removes all the digits.

Alas, I cannot find the curly bracket

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\{

Does anyone know why the curly bracket remains undetected? Who is wrong, me or KRename?

PS: Just found a solution with using it as class

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[{]

but it still eludes me why the escaping does not work as expected