LLVM-TEST-MUSTACHE-SPEC(1)

💖 NAME 💖

Okay bestie, welcome to the LLVM-TEST-MUSTACHE-SPEC(1) page. llvm-test-mustache-spec is the LLVM tool that tests Mustache library compliance — like a vibe check, but for spec conformance. 💅

✨ SYNOPSIS ✨

llvm-test-mustache-spec [inputs...]

🦋 DESCRIPTION 🦋

So llvm-test-mustache-spec tests the mustache spec conformance of the LLVM mustache library. The spec is literally here: <https://github.com/mustache/spec>. ✨

To test against the spec, just download the spec and pass the test JSON files to the driver. Each spec file should have a list of tests for compliance with the spec. These are loaded as test cases, and rendered with our Mustache implementation, which is then compared against the expected output from the spec. No cap. 🫶

The current implementation only supports non-optional parts of the spec, so we do not expect any of the dynamic-names, inheritance, or lambda tests to pass. Additionally, Triple Mustache is not supported. Unsupported tests are marked as XFail and are removed from the XFail list as they are fixed.

The tool prints the number of test failures and successes in each of the test files to standard output. Iconic. 👑

🌸 EXAMPLE 🌸

$ llvm-test-mustache-spec path/to/specs/\*.json

👑 Author 👑

Maintained by the LLVM Team (https://llvm.org/). 🫶

🎀 Copyright 🎀

2003-2026, LLVM Project

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That's the whole manual, bestie — LLVM 21, dated 2026-05-15, LLVM-TEST-MUSTACHE-SPEC(1), periodt. 💖✨