299529 - BiDi: Backspace is ignored if pressed after Delete in a line that ends with a character in the opposite direction

Status: VERIFIED FIXED

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

Description

[Prognathous]

To reproduce:

1. Type an English character at the beginning of an RTL textarea, or a Hebrew
character at the beginning of an LTR textarea (the attached testcase includes
two such textareas).
2. Press Delete.
3. Press Backspace

Actual Results:  
Backspace is ignored.

Expected Results:
Backspace should delete the character typed in step #1

Tested with Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8b2)
Gecko/20050702 Firefox/1.0+

First reported in Bug 207186, comment #9

Prog.

Comment 1

[Prognathous]

Attachment: Testcase D (blank textareas)

Comment 2

[Uri Bernstein]

The regression from the behavior described in bug 207186 comment 9 to the
behavior described here is due to the patch on bug 254278. I'll post a detailed
note on that bug.

The original behavior is arguably correct. See bug 80550 comment #5.

Comment 3

[Uri Bernstein]

Following the check-in of the second patch on bug 254278, the caret no longer
behaves as described in the summary and in comment #0.

Currently, pressing "delete" moves the caret to the other side of the text (left
in RTL textarea, right in LTR), and the pressing "backspace" movess it back to
the original location.

I think this behaviour is correct (certainly its second part, involving the
backspace, is), so I'm marking this bug as fixed.

Prog (or anybody else) - if you disagree with me, please open a separate bug,
describing the current behaviour, and we'll have someone (Simon?) decide whether
it's a bug or not.