473097 - too much vertical spacing around some lines with Unicode math characters

Status: RESOLVED WORKSFORME

(Core :: Layout: Text and Fonts, defect)

Description

[Andrew Harrington]

User-Agent:       Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.0.5) Gecko/2008120122 Firefox/3.0.5
Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.0.5) Gecko/2008120122 Firefox/3.0.5

I assume it is a feature that when a list of apparently math symbols get used, masses of vertical space are left around the line.  It does not work out consistently with other also mathematical lines like a < b

I like what IE does much better - treat them consistently.

Reproducible: Always

Steps to Reproduce:
1. go to http://www.cs.luc.edu/~anh/vertSpaceUnicodeMath.html

2.  
Actual Results:  
see vertical space around *some* lines with math on them. Not consistent - makes pages look awful.


Expected Results:  
use a consistent line spacing algorithm

not have the special case for some math symbols.

Comment 1

[Dave Garrett]

Attachment: what I get; no problems (WinXP and Linux)

I seen no whitespace problems with the given test page. (see attached) You may have some font issues on your end. Attach a screenshot to show what you're talking about.

Comment 2

[Dave Garrett]

If you haven't already, read:
http://support.mozilla.com/en-US/kb/Websites+look+wrong

You should probably also try Firefox safe mode or a new profile:
http://support.mozilla.com/en-US/kb/Safe+Mode
http://support.mozilla.com/en-US/kb/Managing+Profiles

Comment 3

[David Baron :dbaron: (⌚️UTC-5, no longer working on Mozilla)]

So you're saying the Windows screenshot is bad and the Linux screenshot is OK?

This is basically the result of CSS inline layout works, probably combined with the font that's getting picked for some of the symbols on Windows being too large.

Comment 4

[David Baron :dbaron: (⌚️UTC-5, no longer working on Mozilla)]

Er, sorry, I thought the screenshot was from the reporter.

Comment 5

[Dave Garrett]

Yeah, I just did a quick try of the testcase and posted my results. Linux one was only included because I had them both onscreen at once via a VM. (sorry for any confusion) Just wanted to show more or less what it is supposed to look like for comparison. Reporter needs to post their version.

Comment 6

[Zack Weinberg (:zwol)]

Since we haven't heard from the reporter in years, we have reports of the test case looking just fine on Windows and Linux, it does look fine for me on OSX, and this is the sort of thing that tends to get fixed without us noticing it, I'm going to go ahead and close this bug.  Andrew: if you still have the problem on your computer with a current version of Firefox, please feel free to reopen, but please then attach a screen shot of what it looks like for you.