mirror of https://github.com/rust-lang/book
Remove redundant words
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@ -113,7 +113,7 @@ function, as shown in Listing 12-22. This still won’t compile yet.
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Finally, we need to check for the environment variable. The functions for
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working with environment variables are in the `env` module in the standard
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library, so we bring that module into scope at the top of *src/lib.rs*. Then
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we’ll use the `var` function from the `env` module to check to see if any value
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we’ll use the `var` function from the `env` module to check if any value
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has been set for an environment variable named `IGNORE_CASE`, as shown in
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Listing 12-23.
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