Elixir Script for Identifying Mix Test Failures

The content is an Elixir script shared by a user named Dkendal on GitHub Gists. This script appears to be designed for parsing specific files generated by the mix test framework within the Elixir programming ecosystem. More precisely, it searches for files containing test failures (`.mix_test_failures`) and uses pattern matching and stream processing to extract and list the test failures in a human-readable format. The script utilizes functionalities such as 'Path.wildcard' to find the relevant files, and applies transformations using functions like 'Enum.join' and 'String.split' to process the data. It then invokes the 'rg' command-line tool to grep the text for matches. The output is presented in a way that shows the relative path to the failed test, alongside the module and test name.