535312 - The "more" indicator in the email message reading header shows too few addressees

Status: RESOLVED DUPLICATE of bug 456596

(Thunderbird :: Message Reader UI, enhancement)

Description

[Matt Cooper]

User-Agent:       Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.6; en-US; rv:1.9.1.3) Gecko/20090824 Firefox/3.5.3 GTB6
Build Identifier: Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.6; en-US; rv:1.9.1.5) Gecko/20091204 Thunderbird/3.0

The "more" indicator in the email message reading header shows too few addressees.  There are only 2 shown and if more are present, you must click the "more" text to show them.  Especially with the extremely large displays that come with computers these days, the use of real estate in this header is not optimal.  Either the default should be to show 5 addressees or at least let the number be configurable or even optional to show all by default and have a "less" button if you don't want to see them.

Reproducible: Always

Steps to Reproduce:
1. Send yourself an email that has more than 2 "to" (or "cc") addressees.
2. When the email arrives, view it in the message pane
Actual Results:  
1. Notice that the "to" (or "cc") line shows only 2 people and a bold "more" button
2. Notice that there is an enormous amount of unused space even though there would be a sufficient amount of space to show the hidden "to" (or "cc") addressees
3. User must click the "more" to see them displayed

Expected Results:  
One of the following:
a. A user preference where you can change the default of 2 shown addressees to something that matches your screen size.
b. A user preference to disable the "more" altogether and show everything
c. A user preference to show all by default and have a "less" button if you want to reclaim the real estate
d. Automatically show as many addressees that can fit on one line which means it will vary based on how wide the mail window is

Even if the number were just an about:config setting, I would be happy--extension developers could write Thunderbird extensions what would expose a way to modify it.