All the documentation I can find says this should be returning the index of the first of the three x's but instead it returns nil:

(string-match "x\{3\}" "string with 3 x's repeating: xxx")

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update: I had to escape the backslashes:

(string-match "x\\{3\\}" "string with 3 x's repeating: xxx")
  • Need another backslash to escape.
    – Dan
    Mar 18, 2016 at 1:38
  • 2
    Please write up the answer as an answer, and accept it. (It's fine to accept your own answer.)
    – Drew
    Mar 18, 2016 at 4:43

1 Answer 1


Backslashes need to be escaped in strings:

(string-match "x\\{3\\}" "string with 3 x's repeating: xxx")

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