[11.x] Add precision to Number::currency()

[benjibee]

This pull request adds support for specifying precision when formatting currency with the Number helper.

The most common use-case for this is showing larger prices (e.g. $299 or $1000) where the numbers after the decimal place aren't desired in certain contexts. Because different locales use different symbols for decimal places this can't be done properly after the fact.

[shaedrich]

#54360 and #54163 may be interesting to you

[benjibee]

#54360 and #54163 may be interesting to you

I hadn't seen these, thanks for pointing them out. The use-case and implementation here is a bit more limited in scope as I'm not trying to adjust the way anything is calculated or how the data is passed into the helper.

If there was a good workaround I would use it. But because of the way locales and NumberFormatter work, this really needs to be a parameter passed to the helper to work properly.

[shaedrich]

I hadn't seen these, thanks for pointing them out.

You're welcome.

But because of the way locales and NumberFormatter work, this really needs to be a parameter passed to the helper to work properly.

However, precision is usually associated with number formatting, not so much with money. That's why we discussed a currency-based approach in #54163 as they can be three decimal places for some currencies and two for others, which you would overwrite with a static precision.