595296 - Spellcheck incorrectly checks css code in <style> tag

Status: RESOLVED DUPLICATE of bug 222747

(Thunderbird :: Message Compose Window, defect)

Description

[kuzbad]

User-Agent:       Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10_6_4; en-us) AppleWebKit/533.17.8 (KHTML, like Gecko) Version/5.0.1 Safari/533.17.8
Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US; rv:1.9.2.9) Gecko/20100825 Thunderbird/3.1.3

User is attaching an HTML signature. The HTML signature includes a <style> section. 

<style>
<!--
a:link
        {color:blue;
        text-decoration:underline;
        text-underline:single;}
a:visited
        {color:blue;
        text-decoration:underline;
        text-underline:single;}
.signature {
        font-family: Arial;
        color: #3366FF;
        margin: 0;
}
-->
</style>

When running spellcheck on an outgoing message (even if no content is typed other than the signature, spellcheck flags "rgb" as a misspelled words. Thunderbird seems to be sanitizing (or trying to sanitize) the html in the signature file, as when I receive a message from the user the style section looks like:

<style>a:link { color: blue; text-decoration: underline; }a:visited { color: blue; text-decoration: underline; }.signature { font-family: Arial; color: rgb(51, 102, 255); margin: 0pt; }</style>

The spellchecker appears to be flagging the "rgb" in the .signature style definition as misspelled.

I think this is a a new regression as user claims the problem started recently, and the signature file hasn't changed in years (signature file timestamp is at least 2 years old).


Reproducible: Always

Steps to Reproduce:
1. Add HTML signature with style section and color with #123456 rgb designator
2. Open compose window
3. Spellcheck
Actual Results:  
On this system, "rgb" is flagged as misspelled 

Expected Results:  
Spellcheck should ignore contents of HTML <style> tags