User-Agent: Mozilla/5.0 (Windows NT 6.1; rv:2.0b8pre) Gecko/20101012 Firefox/4.0b8pre Build Identifier: Mozilla/5.0 (Windows NT 6.1; rv:2.0b8pre) Gecko/20101012 Firefox/4.0b8pre The web console autocomplete wants to complete to identifiers that shouldn't be unique based on the characters I have typed so far. Reproducible: Always Steps to Reproduce: 1. Open the Web Console on a blank page. 2. Type "var a = 1" and press Enter. 3. Type "a" and press Enter, as if you wanted to check the value of 'a'. Actual Results: The autocompleter substituted "addEventListener" for "a", so I instead evaluated that. Expected Results: It should not have completed "a" to "addEventListener".