FilteringSelect: problem with \(backslash)

[fms]

When selecting an item that contains a '\'(backslash) from FilteringSelect?, 'The value entered is not valid' is shown even though it is valid.

In 1.1.1, the problem occurs with FilteringSelect?, and a data store other than dijit.form._ComboBoxDataStore(default), such as dojo.data.ItemFileReadStore?.
dijit.form._ComboBoxDataStore escapes meta characters of RegExp?() on its own, whereas other data stores use dojo.data.util.filter.patternToRegExp() instead.

In trunk(r14389), the problem occurs with FilteringSelect? and any data store, including dijit.form._ComboBoxDataStore.
In the changeset r14220, dijit.form._ComboBoxDataStore has been fixed to escape meta characters using dojo.data.util.filter.patternToRegExp() just like other data stores, making the same problem to occur in dijit.form._ComboBoxDataStore as well.

Since '\' is a meta character of dojo.data.util.filter.patternToRegExp(), '\'s in the label of FilteringSelect? must be escaped.

Sample patches to both revisions are attached.

Regards,

[fms]

I inadvertently created a duplicate ticket. This defect is the same as the ticket #7151, so please delete this defect (#7150).