This is not a function that I use, but it seems to work fine. Create a snippet like this:
<snippet> <content><![CDATA["$SELECTION"$0]]></content> </snippet>
$0 indicates the exit point of the cursor. Paste it into your /Packages/User/Default (Linux).sublime-keymap file:
{ "keys": ["\""], "command": "insert_snippet", "args": {"name": "Packages/User/quotes.sublime-snippet"}}
fraxel
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