I'm using re-seq to get all the sequences that match a regex in clojure like so:
(re-seq #"(.*)\&(.*)" "((a & b) & c)")
And I'm getting the following result:
(["(a&b)&c" "(a&b)" "c"])
Whereas I expect the sequence to contain all such regex matches like so:
(["(a&b)&c" "(a&b)" "c"] ["(a&b)&c" "(a" "b)&c"])
How to fix this and what am I doing wrong?
As Jas alluded to, the star is greedy. In this case the non-greedy star should work (which java calls a "Reluctant Quantifier"): .*?
(re-seq #"(.*?)\&(.*)" "((a&b)&c)")
gives
(["((a&b)&c)" "((a" "b)&c)"])
This can be challenging to apply in more complicated situations.
Source: https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/util/regex/Pattern.html