Release: v0.17.0

    Published

    Macroverse

    ✨ TL;DR

    This release supercharges the REPL with completions and precise error traces, introduces powerful new macros (doto, time, if-let, when-let), adds macroexpand support, enables native yield, improves string handling, and delivers broad performance gains and critical bug fixes.

    Highlights

    🧠 Language Features

    • New macros: doto, time, if-let, when-let
    • defexception special form for custom exception types
    • Native yield support
    • Strings in output are now wrapped in quotes
    • Added str\contains? and str\repeat functions
    • New conversion functions: phel->php and php->phel

    🛠 Macro & Meta Programming

    • macroexpand functions for inspecting macros
    • Deprecated metadata is now visible in doc output
    • Macros now resolve correctly in namespaces with hyphens
    • Namespace encoding improved (hyphens converted to underscores)

    💻 REPL Improvements

    • REPL completion (auto-suggest)
    • REPL exceptions now show filename:line for better traceability
    • Namespace evaluation and re-definition fixes
    • Proper handling of global variables and re-definable bindings

    Bug Fixes

    🧩 Core Language Fixes

    • Fixed php/echo not working
    • Fixed malfunctioning hash-map
    • Corrected behavior of multibyte string case functions
    • Resolved analyzer null checks and symbol resolution issues
    • Fixed private symbol resolution

    🧷 REPL Stability

    • Fixed global var handling
    • Allowed re-definitions in REPL
    • Fixed issues with html macro when used with when
    • Corrected bracket handling in multiline REPL strings
    • Fixed evaluation bugs in REPL namespaces
    • Fixed the inability to reload the user namespace

    🔐 Security

    • Patched header injection vulnerability

    Performance & Internals

    • Optimized vector iteration and overall performance
    • Fixed test placeholders not being replaced in multiline strings
    • Clarified behavior of all? returning true for empty collections
    • Documented internals of the compiler
    • Fixed workflow cache usage in CI
    • Upgraded static analysis to PHPStan level 2

    Full list

    For a full list of changes, have a look at the release notes.