Output style attribute "override" by regular expression is ignored

[pomu0325]

For example, following override setting unintendedly matches all <font> element whatever attribute it has.

config.fontSize_style =
{
	element		: 'span',
	attributes	: { 'class' : '#(size)' },
	overrides	: [ { element : 'font', attributes : { 'class' : /^foo/ } } ]
};

'CKEDITOR.tools.clone()' seems not to clone RegExp object properly at line.89 of styles/plugin.js

styleDefinition = CKEDITOR.tools.clone( styleDefinition );

After this line, regular expression is turned into , therefore it matches anything.

[pomu0325]

It seems to be a side-effect of [3704], 'clone' method now doesn't clone RegExp properly.

reproduce

• Add above settings to config.js
• Open any CKEditor sample.
• Paste following html in source mode.

  <font class="foo"><font class="bar">test</font></font>
  

• Select text and choose font-size dropdown in WYSIWYG mode

expected result

Only the <font> element which matches the regular expression should be overrided.

<span class="16px"><font class="bar">test</font></span>

actual result

Although 'class="bar"' doesn't match the regular expression, it is also overrided.

<span class="16px">test</span>

This problem is simply avoided by just cloning RegExp object. Is there any reason RegExp should not be cloned??

[Frederico Caldeira Knabben]

The patch should be good for it.

[Garry Yao]

Beside the RegExp fix there, the array clone could be further simplified - Array is simply first class Object in JavaScript.

[Alfonso Martínez de Lizarrondo]

The RegExp part has been merged in [4774] from the 3.1.x branch, so that part isn't needed.

I've done a quick test and it seems that the behavior remains the same if the code for the Array object is removed. Maybe it was added due to problems with some browser? If no one finds problems with that I guess that it could be removed.

[Garry Yao]

Replying to alfonsoml:

The RegExp part has been merged in [4774] from the 3.1.x branch, so that part isn't needed.

The problem described at this ticket was fixed already by [4774].

...Maybe it was added due to problems with some browser?

It's not targeting a specific browser, just to make the array clone codes simpler.