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added 121 characters in body

edited May 31, 2017 at 21:42

Ruby, 23 18 17 bytes

->s{[*' '..?~]-s}

Uses a lambda function as per @sethrin's comments.

Previous versions:

[*' '..?~]-s.chars (' '..'~').to_a-s.chars

answered May 31, 2017 at 15:16