From:  Dick and Jill Miller <TheMillers@millermicro.com>
Date:  03 Jan 2005 00:39:20 Hong Kong Time
Newsgroup:  news.mozilla.org/netscape.public.mozilla.editor
Subject:  

Launch an alternate editor from Mozilla

NNTP-Posting-Host:  209.6.180.144

Can an alernate editor be launched by Mozilla?  Say, Nvu instead of 
Composer?

An apparent way to do it is described in this Dec. 2003 webpage:
http://preferential.mozdev.org/preferences.html

In it, I find these two new command lines should be added to Mozilla's 
pref.js (or user.js) file:
editor.html_editor - Location of outside HTML editor (blank for none)
and
editor.use_html_editor
Use an outside HTML editor (defined in editor.html_editor)
     * 0 : No
     * 1 : Yes

One of my various attempts (using WinXP Home, Moz 1.8.a5 and NVu 0.60) 
inserts these lines (and comment lines) into my user.js file, like this:
// editor.html_editor = Location of alt. HTML editor (blank for none):
user_pref("editor.html_editor",	"C:\\Progra~1\\Nvu\\nvu.exe");
// AND, editor.use_html_editor = Use an outside HTML editor (defined in
// editor.html_editor), where 0 = No or 1 = Yes;
user_pref("editor.use_html_editor",	1);

But when I try this, a click on Edit, Page Edit still launches Mozilla's 
Composer, not Nvu.  Has anyone had better luck, or can anyone offer 
useful tips?

--Dick