Sword 0.2.4 — Fold

2026-10-21. A patch to Fold for programs that talk to C: C's types by their
C names, and the errno a failing C function leaves behind.

Standard library

• std/c names C's types the way a header does — c.Int, c.Long,
  c.SizeT, c.SSizeT, c.Double, c.Bool, c.String for a
  const char *, c.Ptr for a void *, and the rest — so a declaration
  copied from a header reads like the original. Each is an alias, so a c.Int
  is an i32 and passes for one. c.Char is u8, for text; a plain char
  passed by value takes c.SChar or c.UChar, since whether it is signed is
  the platform's choice.
• os.Errno reads the errno a C function just left, and
  os.ClearErrno zeroes it for strtol and its family, which say they
  failed only through errno. errno belongs to the thread, so it is read
  straight after the call, before anything that could wait.

Documentation

• The Neovim section of the editors' README, with a fix for installing
  swordls under Lua's conventions.

Nothing that compiled before stops compiling.