Save overhead of operation when polling doesn't find a change
Save overhead of operation when polling doesn't find a change

femhub/CodeMirror2,filonb/CodeMirror2,femhub/CodeMirror2,leoshine/CodeMirror,filonb/CodeMirror2,femhub/CodeMirror2,filonb/CodeMirror2,leoshine/CodeMirror