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autoFillAfterMatch Obsolete since Gecko 1.9.1
Type: boolean
If set to true, the entire text of the best match will be displayed at the end of the input. If false, only the text that hasn't been entered yet will be filled in. The textbox.autoFill attribute must be set to true to use this feature. As of Gecko 1.9.1, this attribute is superseded by the completedefaultindex attribute.

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