.mustache File — Mustache Template

Mustache is a logic-less template language available in virtually every programming language. MUSTACHE files use double curly braces ({{ }}) — resembling a mustache sideways — for variable interpolation, with sections ({{#section}}...{{/section}}) for conditional rendering and iteration, inverted sections ({{^section}}) for empty/false conditions, and partials ({{> partial}}) for template composition. Mustache's "logic-less" philosophy means templates contain no if/else statements, loops, or other programming constructs — the data structure drives the rendering, encouraging clean separation between presentation and business logic. This constraint makes Mustache templates portable across languages — the same template works with implementations in JavaScript, Ruby, Python, Java, PHP, Go, Rust, and 40+ other languages. Mustache is used for email templates, configuration file generation, code generation, and any scenario where templates need to be shared across different platform implementations. Handlebars extended Mustache with helpers and block expressions while maintaining backward compatibility. The specification is maintained at mustache.github.io and is intentionally minimal, ensuring consistent behavior across all implementations.