Jacket 0.18.0

The project has a new name: Jacket ("Jai kit"). This release also lets editors open code you don't trust safely, and makes jailint faster and easier to extend.

Note

The standard library has been rewritten, this release may be a bit unstable.

Highlights

• New name, same tools. The repository is now matteopolak/jacket. jaic, jailsp, jaifmt and jailint keep their names, and so do the crates.
• Workspace trust. In an untrusted folder, jailsp checks your code without running any of its compile-time code (#run, #insert, build metaprograms). VS Code follows its own workspace trust setting; in Neovim, pass trusted = false to setup(). See workspace trust.
• jailint is several times faster on large trees. It lints each file once and compiles programs in parallel (-j). --allow-incomplete lets you lint a tree where some modules only build on another OS.
• Better switch completion. The "add missing cases" action now works on every kind of if x == { case ...; }, and its error covers the switch's header instead of the whole block.
• Native console colours on Windows. Print_Color sets console colours through the Windows API, so they also work in consoles that don't understand ANSI escapes.

Breaking changes

What	Was	Now
VS Code extension	matteopolak.jai-toolchain (and matteopolak.jai before that)	matteopolak.jacket. It offers to uninstall the old one, and your jai.* settings carry over.
Neovim plugin	matteopolak/jai.nvim	matteopolak/jacket.nvim. The jai Lua module and the :Jai command are unchanged.
Homebrew	matteopolak/tap/jai	matteopolak/tap/jacket. brew upgrade moves you over.
Release archives	jai-<platform>.tar.gz	jacket-<platform>.tar.gz (.zip on Windows), unpacking to jacket-<platform>/.
How jailint recognises procedures	by name (trim, min, free, ...)	by a note on the declaration: @UseResult, @Minimum, @Maximum, @RemovesElements, @Releases. The standard library already has them; add them to your own procedures if you want the rules to apply. See declaration notes.
ImGui and Curl printf-style procedures (Text, TreeNode, curl_msnprintf, ...)	a Jai string format, forwarded through a libffi bridge that releases never shipped	the C functions themselves: the format is a C string and the arguments are C varargs. Pass text arguments as *u8 (cast(*u8) "ok", name.data), and TextColored takes *ImVec4. The _CFormat names are gone.

Earlier releases have been removed. Install 0.18.0 or later.

Fixes

• A *void converts to a procedure type without a cast, as it should.
• #no_reset is accepted alongside other declaration modifiers.
• A variable is never treated as a constant, even when its initializer is one.
• The interpreter runs memcpy, memset and memcmp without extra system calls, so memory-heavy programs under -interp run faster, especially on Linux.
• On Linux, a shared library marked link_always is no longer dropped by --as-needed.
• On X11, an empty clipboard reads as empty text instead of failing, and fullscreen works without a window manager.