Lightweight grep based on an exercism.io python exercise.
clj-grep.core=> (grep "ACHILLES" "-i" ["iliad.txt"])
"Achilles sing, O Goddess! Peleus' son;\nThe noble Chief Achilles from the son\n"
clj-grep.core=> cli-options
[["-x" "--entire-lines" :default false]
["-i" "--ignore-case" :default false]
["-v" "--invert" :default false]
["-n" "--line-numbers" :default false]
["-l" "--only-names" :default false]]
Copyright © 2019 Bob Follek
This program and the accompanying materials are made available under the terms of the Eclipse Public License 2.0 which is available at http://www.eclipse.org/legal/epl-2.0.
This Source Code may also be made available under the following Secondary Licenses when the conditions for such availability set forth in the Eclipse Public License, v. 2.0 are satisfied: GNU General Public License as published by the Free Software Foundation, either version 2 of the License, or (at your option) any later version, with the GNU Classpath Exception which is available at https://www.gnu.org/software/classpath/license.html.