Release: 0.17.0 - Macroverse

Released Jun, 1 2025

What's Changed

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.

https://phel-lang.org/blog/release-0-17/

🥇 New features

Add doto macro (#791)
Add time macro (#792)
Add if-let and when-let macros (#795)
Add native yield support (#802)
Strings in output are wrapped with quotes (#806)
Add macroexpand functions (#810)
Add source filename:line on REPL exceptions (#812)
Implement defexception special form (#819)
Add REPL completion (#821)
Add phel->php and php->phel functions (#829)
Add public Repl completer and ApiFacade::replComplete (#830)
Add str\contains? function (#833)
Display deprecated metadata on doc (#834)
Add phel/str/repeat

🐛 Bug fixes

Fix php/echo does not work (#729)
Fix hash-map malfunction notice (#786)
Fix header injection vulnerability (#803)
Fix multibyte string case functions (#805)
Fix null checks on Analyzer forms (#807)
Fix RangeIterator rewind state reset (#808)
Fix immutable global binding (#811)
Fix private symbol refer resolution (#813)
Fix global var handling in REPL (#814)
Fix allow re-def bindings on REPL (#815)
Fix html macro when using when forms (#817)
Fix REPL multi-line string brackets (#818)
Fix REPL namespace evaluation (#820)
Resolve macros in namespaces with hyphens (#824)
Fix macroExpand to encode ns by replacing - with _ (#828)
Fix cannot reload user namespace (#832)

🏗️ Miscellaneous

Use PHPStan level 2 (#785)
Document all? returns true for empty collection (#787)
Fix workflow cache (#797)
Document internals compiler (#804)
Optimize vector iteration (#809)
Improve vector performance (#823)
Test placeholder not replaced in multiline strings (#827)
Improve DependenciesForNamespace performance

Contributors

@Chemaclass
@smeghead
@jasalt made their first contribution in https://github.com/phel-lang/phel-lang/pull/787

Full Changelog: v0.16.1...v0.17.0

View release on GitHub