As per JIRA documentation http://www.atlassian.com/software/jira/docs/latest
The following filter will show the issues opned by me (Current User).
repor
The new scriptrunner can do lots of things e.g. find issues with comments issueFunction in hasComments(), find issues with comments that are not older than 7 days issueFunction in commented("after -7d") and also issue comments from users or groups.
Details can be found here: https://jamieechlin.atlassian.net/wiki/display/GRV/Scripted+JQL+Functions#ScriptedJQLFunctions-commented(commentquery)