Bootstrap Reboot 4.x CSS contains duplicate text-decoration style for abbr[title]

[matosconsulting]

The generated reboot css file contains a duplicate property:

bootstrap/scss/_reboot.scss

Lines 145 to 146 in 056216a

	text-decoration: underline; // 2
	text-decoration: underline dotted; // 2

CSS allows duplicate property names but only the last instance of a duplicated name determines the actual value that will be used for it. Therefore, changing values of other occurrences of a duplicated name will have no effect and may cause misunderstandings and bugs.

• Operating system and version: All/Unrelated
• Browser and version: All/Unrelated
• Suggested Fix: Remove the duplicate that doesn't align with the vision of the product

[ffoodd]

Hi there, thanks for reporting!

It was done on purpose, since text-decoration as a shorthand had very poor support back in the days: the first declaration was a fallback value for non-supporting browsers (which is a very common pattern for progressively enhance some properties allowing modern values).

However after checking support on MDN, it appears that our current targets all support the shorthand value. I think it's now safe to drop the first one in v5 then.

Feel free to suggest a patch, or we'll take of it when possible.