Features

• terse field selection syntax similar to Python's list slices
• negative indexing from end of line
• optional start/end index
• zero-indexed
• reverse ranges
• slightly faster than cut for sufficiently long inputs, much faster than awk
• regular expression field separators using Rust's regex syntax

$ choose --help
choose 1.2.0
`choose` sections from each line of files

USAGE:
    choose [FLAGS] [OPTIONS] <choices>...

FLAGS:
    -c, --character-wise    Choose fields by character number
    -d, --debug             Activate debug mode
    -x, --exclusive         Use exclusive ranges, similar to array indexing in many programming languages
    -h, --help              Prints help information
    -n, --non-greedy        Use non-greedy field separators
    -V, --version           Prints version information

OPTIONS:
    -f, --field-separator <field-separator>
            Specify field separator other than whitespace, using Rust `regex` syntax

    -i, --input <input>                                      Input file
    -o, --output-field-separator <output-field-separator>    Specify output field separator

ARGS:
    <choices>...    Fields to print. Either a, a:b, a..b, or a..=b, where a and b are integers. The beginning or end
                    of a range can be omitted, resulting in including the beginning or end of the line,
                    respectively. a:b is inclusive of b (unless overridden by -x). a..b is exclusive of b and a..=b
                    is inclusive of b