277050 - Strange behavior when textarea contains markup control characters

Status: RESOLVED DUPLICATE of bug 227358

(Core :: Layout: Form Controls, defect)

Description

[crisp]

User-Agent:       Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.7.5) Gecko/20041107 Firefox/1.0
Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.7.5) Gecko/20041107 Firefox/1.0

First of all: yes, markup-significant control characters should be represented
by their entities when used in form controls. However, there seems to be some
strange inconsistent behavior with certain combinations of characters as show on
the testpage.

For instance, this is no problem for the rendering engine; it correctely assumes
that the lower-than sign is content en not a control character:

<textarea rows="5" cols="60"><- no problem here</textarea>

however when the lower-than is followed by a question mark, or an exclamation
mark things go wrong in the sense that all following HTML is suddenly also
considered content:

<textarea rows="5" cols="60"><? question mark triggers the problem?</textarea>

Reproducible: Always

Steps to Reproduce:
1. See testpage
Actual Results:  
All markup following a combination of < followed by a ? or ! is considered
content for the textarea

Expected Results:  
It should use some form of error-correction to prevent this problem as it does
in other cases (consistent behavior when there is no ambiguity)

Comment 1

[crisp]

Attachment: Testcase

Added testpage for convenience

Comment 2

[Martijn Wargers (dead)]

This is a duplicate of bug 227358, and that bug was fixed by bug 88952.

*** This bug has been marked as a duplicate of 227358 ***