Changelog

0.2.1 / 2025-06-06

Signature help support.
Provide human readable code actions titles.
Add --help and --version command line flags.
Support providing improved completion kinds to clients.
Support highlighting references to the symbol under the cursor in the current file.
Support loading external docsets from disk.
Extract TIC-80 docs to external docset.
Support :lua-version settings like "lua5.4" rather than requiring "lua54".
Support "union" in :lua-version for globals present in any Lua version.
Support "intersection" in :lua-version for globals present in every Lua version.
Show the kind of thing being completed better.
Add lints for unnecessary tset and do.
Add lint for replacing match with case when possible.
Ignore unused locals if they end in underscore.
Settings file: flsproject.fnl. Settings are now editor agnostic.
Support better completions. The eglot client is no longer a special case.

Packaging scripts for nix and luarocks have been removed so they can be kept in downstream repositories.

(set (. x y) z) wasn't being analyzed properly.
(local {: unknown-field} (require :module)) lint warns about the unknown field when accessed via destructuring.

To be honest, this isn't even Eglot's fault; the LSP specification leaves it ambiguous Eglot's issue LSP's issue fennel-mode can't fix it on their end

Switch json libraries from rxi/json.lua to dkjson
Lots of refactoring and renaming things
You can now build fennel-ls with no vendored dependencies if you want
Building is more reproducible now! tools/get-deps.fnl will reproducibly get all the deps, instead of you needing to trust me
faith updated to 0.2.0

Completions and docs for coroutine, debug, io, math, os, string, table, utf8 and their fields.
Global metadata can follow locals: With (local p print), looking up p will show print's information.
New lint for erroneous calls to (values) that are in a position that would get truncated immediately.
Upgrade to Fennel 1.4.2

(-?> x) and similar macros no longer give a warning (even in fennel 1.4.1 before my -?> patch landed)
Fixed off-by-one when measuring the cursor position on a multisym. For example, table|.insert (where | is the cursor) will correctly give information about table instead of insert.
Can give completions in the contexts "(let [x " and "(if ", which previously failed to compile.
Fields added to a table via (fn t.field [] ...) now properly appear in completions
(include) is now treated like (require)

Switched testing framework to faith
Tests abstract out the filesystem
Tests use the "|" character to mark the cursor, instead of manually specifying coordinates

Add Nix(OS) support
Add LuaRocks build support
Upgrade to Fennel 1.4.1, the first release of fennel that is compatible with fennel-ls without patches.
Added a lint for operators with no arguments, such as (+)
textEdit field is present in completions

Uses bundled fennel 1.4.0-dev
executes macro code in the macro sandbox
- infinite loop macros will freeze fennel-ls
- fennel-ls will have trouble working with macros that require disabled sandbox
There was a security issue in previous versions of fennel-ls regarding macro sandboxing