Document --spacing

[kocv59]

Theme documentation says --spacing is used for px and max-h but not the others. A list of all utilities that use it should be somewhere on the page.

[rozsazoltan]

I don't quite understand. On every page, it's clearly visible whether it's being used or not:

When is it used? Anytime you need to calculate any kind of sizing. The spacing represents a default unit, and from there, every w-, h-, p-, m-, etc. class uses this unit for its calculations.

and many more

Source: https://tailwindcss.com/docs/theme#theme-variable-namespaces

[kocv59]

The pages that use --spacing show it like your screenshots but there's no place with a list of all those pages.

https://tailwindcss.com/docs/theme#theme-variable-namespaces says Spacing and sizing utilities like px-4, max-h-16, and many more. There could be an extra section about --spacing that links all the pages that use it like https://tailwindcss.com/docs/padding and https://tailwindcss.com/docs/min-height and the pages from your screenshots.

[philipp-spiess]

@kocv59 I understand the motivation but I'm not sure about the practicality of what you're suggesting. When we work on adding new utilities we usually only update the page of the specific utility so it I worry that it would make things a bit complex to have to remember to add all the backlinks to another page.

I'm curious why you want an exhaustive list for this, though?

[kocv59]

I'm curious why you want an exhaustive list for this, though?

If you want to change the --spacing number you know all the places to look where to see the changes.

When we work on adding new utilities we usually only update the page of the specific utility so it I worry that it would make things a bit complex to have to remember to add all the backlinks to another page.

It's more complex for all users to click on all the utility pages and see if --spacing is anywhere in the page instead of developers changing it once in rare cases new utility that uses --spacing is added.

If you add a new utility that uses --spacing you only need to make one change to the list of --spacing utilities to add link to the new page for the new utility. What more backlinks are there?

[rozsazoltan]

I think this only needs to be learned once.

Perhaps an instructional post could be published about it. In this case, I'm thinking of either:

• A) a static, non-updating post, e.g., a blog entry; or
• B) a dynamic list that can generate the necessary links to the settings based on the docs API table. (maybe by calc(var(--spacing) * <number>) expression)