I recently I ran into a problem in Erlang project and I had to find a way to Remove multiple spaces in string and leave only one one space.

Some string with     extra        spaces.

Solution:

Here is solution how to remove it with simple re:replace

re:replace("Some string with     extra        spaces.", "(\\s+\\s+)", " ", [global,{return,list}]).

and the returned output is:

Some string with extra spaces.

Useful links:

http://stackoverflow.com/questions/12794358/how-to-strip-all-blank-characters-in-a-string-in-erlang

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