209867 - LeftArrow, RightArrow do not move caret correctly after delete

Status: RESOLVED WORKSFORME

(Core :: DOM: Selection, defect)

Description

[Brent]

User-Agent:       Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.4) Gecko/20030612
Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.4) Gecko/20030612

In an empty text area, type:

a<Enter>b<CtrlShiftHome><Delete>c<DownArrow>d<LeftArrow><LeftArrow>

Reproducible: Always

Steps to Reproduce:
In an empty text area, type:

a<Enter>b<CtrlShiftHome><Delete>c<DownArrow>d<LeftArrow><LeftArrow>
Actual Results:  
caret moves after 'd'.

Expected Results:  
caret should move before 'c'.

Comment 1

[Brent]

Also

a<Enter>b<CtrlShiftHome><Delete>c<CtrlEnd>d<Home><RightArrow><RightArrow>

Similar to bug 88164.

Comment 2

[Brent]

More ways to cause this bug in Mozilla 1.4 RC2.
Move caret to end of text area (empty or not), then

<Enter>a<ShiftUpArrow>b<DownArrow>c<LeftArrow><LeftArrow>

Another case, shows up anywhere, not just at end of text:

<Enter><Enter><Enter><UpArrow>a<ShiftUpArrow>b<DownArrow>
c<LeftArrow><LeftArrow><LeftArrow>

Comment 3

[Brent]

May need one more LeftArrow to see the bug:

<Enter><Enter><Enter><UpArrow>a<ShiftUpArrow>b<DownArrow>
c<LeftArrow><LeftArrow><LeftArrow><LeftArrow>

Can see the RightArrow problem by doing the above plus:

d<Home><RightArrow><RightArrow>

Comment 4

[Prognathous]

I can't reproduce this. Brent, do you still see this problem?

Prog.

Comment 5

[Brent]

After 1.4 I quit downloading Mozilla, since MNG support was removed and I want
to keep MNG.  The bug is present in version 1.4.  This bug is not present in
MozillaFirebird 0.7.  I just now got Mozilla 1.6b (Linux) and tried to duplicate
this bug.  The bug does not happen in 1.6b with the keystrokes given.  But, in
1.6b, I can see that it may still be possible to cause a problem with some other
sequence of keystrokes, because the carat can be put in 2 different positions
about 2 pixels apart depending on whether the carat is moved between the c and d
with the right or the left arrow key.  When the MNG guys get a 1.6 version with
MNG included, I'll give it another shot and file another bug or reopen this (no
doubt this bug is headed to the "worksforme" scrap heap) if I find a way to
cause something.