822554 - CSS: {hyphens:auto;} no longer works in FF17

Status: RESOLVED INVALID

(Core :: CSS Parsing and Computation, defect)

Description

[Cindy]

User Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:17.0) Gecko/20100101 Firefox/17.0
Build ID: 20121128204232

Steps to reproduce:

Added CSS rule
p{
       word-wrap: break-word;
       -webkit-hyphens: auto;
        -moz-hyphens: auto;
	hyphens: auto;
}


Actual results:

Added very long word in html, load html in FF17.
No hyphens are added when shrink down browser width.


Expected results:

In FF10, when shrink down browser width hyphens are added, long word breaks by hyphens and wraps correctly.

Comment 1

[Matthias Versen [:Matti]]

Could you please attach a complete testcase ?

Comment 2

[Cindy]

Attachment: load chatarea.html and narrow the borrow to see that auto hypen does not kick in

Comment 3

[:Ms2ger (he/him; ⌚ UTC+1/+2)]

You need an explicit 'lang' attribute.

Comment 4

[David Baron :dbaron: (⌚️UTC-4, no longer working on Mozilla)]

... because http://dev.w3.org/csswg/css3-text/#hyphens says:

Correct automatic hyphenation requires a hyphenation resource appropriate to the language of the text being broken. The UA is therefore only required to automatically hyphenate text for which the author has declared a language (e.g. via HTML lang or XML xml:lang) and for which it has an appropriate hyphenation resource.

Comment 5

[Jean-Yves Perrier [:teoli]]

Added a sentence on https://developer.mozilla.org/en-US/docs/CSS/hyphens to make this clear.