cat-ruby

Cloned the cat command using Ruby

Usage

$ bin/cat [options] [file ...]
$ bin/cat tests/example.txt
$ bin/cat -n tests/example.txt
$ bin/cat -b tests/example.txt
$ bin/cat -s tests/example.txt

Supported options

• -n: number all output lines
• -b: number non-blank output lines (-n より優先)
• -s: squeeze multiple adjacent blank lines into one

Not yet supported

• -E / --show-ends
• -T / --show-tabs
• -v (display non-printing)
• -u (disable output buffering)

Tests

$ ruby tests/cat.rb

Type check (RBS/Steep)

$ bundle install
$ bundle exec steep check