336705 - Problem with newline in-between tags in <pre>formatted text in display:table

Status: NEW

(Core :: Layout: Block and Inline, defect)

Description

[Michael Staas]

User-Agent:       Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.8.0.3) Gecko/20060426 Firefox/1.5.0.3
Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.8.0.3) Gecko/20060426 Firefox/1.5.0.3

With shrink-wrapped (i.e. display: table for non ie browsers; width: 0 for ie) pre-formatted text containing tags at the end of one line and the beginning of the next, Firefox dishonours the newline in-between! The newline appears in the DOM tree (as an anonymous text node inbetween the two tags in question), it is just not rendered.

Reproducible: Always

Steps to Reproduce:
1. Create block with pre-formatted text.
   i.e. <pre> element, style="whitespace: pre"
2. Set style of pre-formatted block to include "display: table"
3. Add tag to end of one line and begining of next
   (whitespace doesn't appear to affect this issue)

Actual Results:  
 Line with a tag at the end -><- A tag at the beginning of line 


Expected Results:  
 Line with a tag at the end ->
 <- A tag at the beginning of line

Comment 1

[Michael Staas]

Attachment: Description of problem and implementation of steps to re-produce

Please see the attached file for demonstration of problem

Comment 2

[Michael Staas]

I was stepping through firefox-1.5.0.3-debug, specifically in and around nsCSSFrameConstructor.cpp in an attempt to locate the offending code, and one of the times the browser actually exhibited the expected behaviour; I have been unable to reproduce this result so-far or to locate the code involved.

Comment 3

[Régis Caspar]

Confirmed on Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9a1) Gecko/20060517 Minefield/3.0a1 ID:2006051706 [cairo]
 
 -> Trunk

Comment 4

[Boris Zbarsky [:bzbarsky]]

The display:table is key.  We skip over whitespace-only Text nodes when constructing the kids of a display:table frame so that for example:

  <table>
    <tr><td>Text</td></tr>
  </table>

Won't create three rows (two to hold the whitespace).

It's not clear what the correct behavior here is, in general; please bring this up on [e-mail].