13159 2007-03-22 10:13:13 -0700 Form Feed should be collapsed rather than turned into zero-width 2013-09-01 03:00:54 -0700 1 1 1 Unclassified WebKit Layout and Rendering 523.x (Safari 3) All All REOPENED https://bugzilla.mozilla.org/attachment.cgi?id=257902 P2 Normal --- 1 jshin webkit-unassigned ap giecrilj mitz playmobil robert oldest_to_newest 17668 0 jshin 2007-03-22 10:13:13 -0700 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 17676 1 jshin 2007-03-22 11:58:12 -0700 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. 66964 2 eric 2008-01-11 15:19:43 -0800 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. 544739 3 giecrilj 2012-01-29 08:41:16 -0800 Also reported as Bug KDE 292103. 845860 4 robert 2013-03-02 13:10:15 -0800 jshin, is there anything to do here still? 912228 5 robert 2013-07-27 02:14:46 -0700 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. 923312 6 giecrilj 2013-08-31 10:47:59 -0700 (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. 923438 7 robert 2013-09-01 03:00:54 -0700 (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.