the new Lua directors feature uses lua_setuservalue, added in Lua 5.2.
Removing the LUA_VERSION_NUM-guarded compatibility defines for lua_rawlen,
lua_pushglobaltable and lua_rawsetp/lua_rawgetp from Lib/lua/luarun.swg.
LuaJIT implements the Lua 5.1 API and, per its own documentation, is
"API+ABI-compatible with Lua 5.1, which prevents implementing features
that would otherwise break the Lua/C API and ABI" (https://luajit.org/extensions.html,
"Extensions from Lua 5.2" section) - so it never defines these Lua 5.2 additions.
Noticed when rebuilding obs-studio's LuaJIT-based Lua bindings against SWIG master.
Restore those compatibility defines, scoped to 5.1 and later only (the old
Lua 5.0-only shims are not restored).
Also revert an incidental ok!=LUA_OK comparison introduced by #3394
back to ok!=0, since LUA_OK isn't defined pre-5.2 either and luaL_dostring()
already returns 0 on success on every Lua version.
Fix the examples and test-suite where they themselves used Lua 5.2 only
features: LUA_OK in Examples/lua/embed/embed.c, _ENV in helpers.lua, and
string.format("%c", ...) in li_cdata_bytes, which yields an empty string for a
NUL byte in Lua 5.1 as strlen() is applied to the formatted result, so
string.char() is used instead.
Directors continue to require Lua 5.2 or later and are unaffected by this
change; the Lua 5.1 director test failures are addressed separately.
Assisted-by: Claude Code (Sonnet 5)
And move it to helpers.
Although Lua uses C floating math.
The actual used C floating functions in Lua
might be different from the actual floating functions
used in the original C code, which may lead to a slightly
different floating number.
So for calculated floating numbers we should use the cmp_flt function in the assert.
Signed-off-by: Erez Geva <ErezGeva2@gmail.com>
- configure.ac
- Use minimum version 5.2 for Lua
- Add lua 5.5, it was released in dec 2025
- Syntax improvements
- GHA CI
- Remove 'default' Lua version, it is confusing.
Just select the version explicitly.
- Add Lua 5.4 test, we need to test all supported versions 5.2, 5.3 and 5.4
Lua 5.5 is not available on Ubuntu yet.
- Lua documentation Doc/Manual/Lua.html
- Update version to 5.2
- Remove mention to older SWIG version,
whom wishes to go to the very old history can look on CHANGES.
- Add references on missing operators in Lua.
- _ENV exist from Lua 5.2.
- Remove old compatibility code from Lib/lua/luarun.swg.
- Remove LUA_VERSION_NUM from Lua C wrapping code.
It was used for old Lua 5.0 and Lua 5.1.
- Remove _VERSION from Lua tests.
Note: _VERSION remains a keyword and developers may use it in interface files!
- Remove Example/lua/import.lua and Examples/test-suite/lua/import.lua
as they are not used or needed any longer.
- Remove old Lua import.
- Add Examples/test-suite/lua/helpers.lua
- include it in all tests in test-suite.
- Add catch "undefined" global variables enable function.
- Add import_to_globs function.
To add module functions, variables and classes to global scope.
- Remove the -squash-bases option as it is broken
The der.new_func from the example
in the document, "29.3.18.3 Inheritance",
pass from base object to derived object
regardless of using the flag or not.
- Remove -no-old-metatable-bindings as it is deprecated in the last 12 years
Signed-off-by: Erez Geva <ErezGeva2@gmail.com>
William S Fulton