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Ruby Haml.tmLanguage inside the Rails folder
depois cole este código,
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple Computer//DTD PLIST 1.0//EN"
"http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
<key>fileTypes</key>
<array>
<string>haml</string>
</array>
<key>foldingStartMarker</key>
<string>^\s*([-%#\:\.\w\=].*)\s$</string>
<key>foldingStopMarker</key>
<string>^\s*$</string>
...