Wrong syntax of column-width, not actually implemented

[Eccenux]

MDN URL

https://developer.mozilla.org/en-US/docs/Web/CSS/column-width

What specific section or headline is this issue about?

Formal syntax

What information was incorrect, unhelpful, or incomplete?

column-width = 
  auto                                |
  <length [0,∞]>                      |
  min-content                         |
  max-content                         |
  fit-content( <length-percentage> )  

<length-percentage> = 
  <length>      |
  <percentage>  

What did you expect to see?

column-width = 
  auto                                |
  <length [0,∞]>                      |

Do you have any supporting links, references, or citations?

Here is the current syntax:
https://www.w3.org/TR/css-multicol-1/#propdef-column-width

This is an autocomplete in Chrome (similar in Firefox):

As you can see, auto | <length [0,∞]> is what's actually implemented in browsers.

Note that additions to column-width were already considered at-risk in Level 3: https://www.w3.org/TR/css-sizing-3/

Do you have anything more you want to share?

No response

MDN metadata

Page report details

• Folder: en-us/web/css/column-width
• MDN URL: https://developer.mozilla.org/en-US/docs/Web/CSS/column-width
• GitHub URL: https://github.com/mdn/content/blob/main/files/en-us/web/css/column-width/index.md
• Last commit: 9231a70
• Document last modified: 2024-07-26T14:44:17.000Z

[Josh-Cena]

We don't use the published w3 specs as source, because those are arbitrarily cut versions. Check the latest syntax at https://drafts.csswg.org/css-sizing/#column-sizing. It's a known issue that sometimes this may get too new and thus unimplemented anywhere but that's a big project to solve.

[Eccenux]

Well in that case the compat tabel is wrong (browsers clearly don't implement additional sizing):
mdn/browser-compat-data#24493

[Eccenux]

Sorry to bother you, but I also noticed that other section is wrong, assuming this is correct: min-content, max-content, fit-content( <length-percentage> ).

These values are not included in the Syntax section, either in the syntax examples or in the value descriptions.