Add Preserve Color Output For Task Command as a Mise TIL

mise/preserve-color-output-for-task-command.md

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+# Preserve Color Output For Task Command
+
+I decided to wrap a couple test running commands for a project into a single
+`test:all` mise task. It looked something like this:
+
+```toml
+[tasks."test:all"]
+run = """
+bundle exec rspec
+yarn test run
+"""
+description = "Run all tests (RSpec and Vitest)"
+depends = ["bundle-install", "node-install"]
+```
+
+I can run this with `mise run test:all` and it works. However, there is a
+glaring issue that immediately juts out. All of the test runner output is
+uncolored text. I'm used to and strongly prefer greens (passes), reds (fails),
+and yellows (skips) of test runner output.
+
+The test runners lose the text coloring when run through `mise` because they
+believe they are not running in _interactive_ mode.
+
+The [`expect`](https://linux.die.net/man/1/expect) tools (`brew install
+expect`) install with another binary called
+[`unbuffer`](https://linux.die.net/man/1/unbuffer). `unbuffer` can coerce a
+command to run in interactive mode. Prepending these test runner commands with
+`unbuffer` will preserve the colors as the results are output to the terminal.
+
+Here is the update `test:all` task:
+
+```toml
+[tasks."test:all"]
+run = """
+unbuffer bundle exec rspec
+unbuffer yarn test run
+"""
+description = "Run all tests (RSpec and Vitest)"
+depends = ["bundle-install", "node-install"]
+```
+
+For some commands, it seems able to stream out (rather than _buffer_) the
+results (e.g. with `vitest`). Whereas with `rspec`, the test suite runs to
+completion and is then output to the terminal. I'm still investigating
+streaming the `rspec` results.