REOPENED 13159
Form Feed should be collapsed rather than turned into zero-width 
https://bugs.webkit.org/show_bug.cgi?id=13159
Summary Form Feed should be collapsed rather than turned into zero-width
Jungshik Shin
Reported 2007-03-22 10:13:13 PDT
Currently, 'Form Feed' (U+000C) is turned to zero-width glyph. However, they should be collapsed like space. See http://www.w3.org/TR/html401/struct/text.html#didx-white_space-1 Gecko currently renders them as whitespace *without* collapsing them. https://bugzilla.mozilla.org/show_bug.cgi?id=373268
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Jungshik Shin
Comment 1 2007-03-22 11:58:12 PDT
Related to this bug is bug 13136. In the page given at the URL, there should be just a single space between 'XXX' and 'XXX'. Currently, there's no space at all because all control characters are turned to a zero-width glyph.
Eric Seidel (no email)
Comment 2 2008-01-11 15:19:43 PST
It looks like Mozilla closed their bug as "invalid" citing the CSS spec saying that these should be rendered as spaces but not collapsed. To best understand this bug, we'll need a test case which demonstrates how we behave differently from Gecko or IE.
Christopher Yeleighton
Comment 3 2012-01-29 08:41:16 PST
Also reported as Bug KDE 292103.
Robert Hogan
Comment 4 2013-03-02 13:10:15 PST
jshin, is there anything to do here still?
Robert Hogan
Comment 5 2013-07-27 02:14:46 PDT
http://www.w3.org/TR/css3-text/#white-space-rules http://www.w3.org/TR/CSS21/text.html#white-space-prop Neither of the specs for whitespace processing treat form feeds as in scope. So IE and Opera are wrong and there's nothing to do here.
Christopher Yeleighton
Comment 6 2013-08-31 10:47:59 PDT
(In reply to comment #5) > http://www.w3.org/TR/css3-text/#white-space-rules > http://www.w3.org/TR/CSS21/text.html#white-space-prop > > Neither of the specs for whitespace processing treat form feeds as in scope. So IE and Opera are wrong and there's nothing to do here. Quoting <URL: http://www.w3.org/TR/CSS21/text.html#white-space-prop >: UAs must recognize line feeds (U+000A) as newline characters. UAs may additionally treat other forced break characters as newline characters per UAX14. Please reopen.
Robert Hogan
Comment 7 2013-09-01 03:00:54 PDT
(In reply to comment #6) > (In reply to comment #5) > > http://www.w3.org/TR/css3-text/#white-space-rules > > http://www.w3.org/TR/CSS21/text.html#white-space-prop > > > > Neither of the specs for whitespace processing treat form feeds as in scope. So IE and Opera are wrong and there's nothing to do here. > > Quoting <URL: http://www.w3.org/TR/CSS21/text.html#white-space-prop >: > > UAs must recognize line feeds (U+000A) as newline characters. UAs may additionally treat other forced break characters as newline characters per UAX14. > > Please reopen. Please raise this with www-style so we can resolve this properly.
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