1169267 - Directionality of dir=auto element is not always updated correctly when adding strong RTL characters to an element previously containing all neutrals

Status: RESOLVED FIXED

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

Description

[Jonathan Kew [:jfkthame]]

+++ This bug was initially created as a clone of Bug #1103348 +++

Modified STR to demonstrate bad behavior even after bug 1103348:

(1) In a new tab, load a simple dir=auto testcase:

  data:text/html,<div dir="ltr"><div contenteditable dir="auto"
    style="border:1px solid;padding:2px;width:200px;height:2em"></div></div>

(2) Click in the contenteditable <div>, and type some Western digits (e.g. "123"). The text is displayed with LTR directionality, as expected.

(3) Switch to an Arabic keyboard and append a few letters. Directionality correctly becomes RTL.

(4) Backspace to remove the RTL letters just added; when the last one is removed, the directionality correctly reverts to LTR.

(5) Now type the Arabic letters again. This time, the directionality incorrectly remains LTR.

Comment 1

[Jonathan Kew [:jfkthame]]

(Removing 'regression' keyword, as I'm not sure this has ever worked properly.)

Comment 2

[Simon Montagu :smontagu]

Attachment: Patch

Comment 3

[Simon Montagu :smontagu]

Attachment: Reftests

Comment 4

[Pulsebot]

https://hg.mozilla.org/integration/mozilla-inbound/rev/b89b70fcd8f2
https://hg.mozilla.org/integration/mozilla-inbound/rev/fc7d84d79430

Comment 5

[Carsten Book [:Tomcat]]

https://hg.mozilla.org/mozilla-central/rev/b89b70fcd8f2
https://hg.mozilla.org/mozilla-central/rev/fc7d84d79430