I want to extract a list of all tags which are wrapped in {{ }} from 
following string and work on them i.e check db if they exist or not and 
than replace them as markdown link . i didnt find any String.scan function 
which returns substrings as a list. if you know how to do it than please 
let me know.

*string*

Lorem ipsum {{dolor}} sit {{amet}}, consectetur adipisicing {{elit}},


Thanks in advance for your effort and time :)

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