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authorJeremy Allison <jra@samba.org>2009-10-17 10:36:33 -0700
committerJeremy Allison <jra@samba.org>2009-10-17 10:36:33 -0700
commit7c51fa6d699a653cafa90df8e44911b576118ebd (patch)
tree543bf9ca698e03eff81104898b33e77f1abed319 /source3/lua-5.1.4/HISTORY
parentcc3a6770c77ec8fe1cd63bf4c682853c56201f0c (diff)
parent3e3214fd91471bca5b6c4d3782e922d252d588fb (diff)
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Merge branch 'master' of ssh://jra@git.samba.org/data/git/samba
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-HISTORY for Lua 5.1
-
-* Changes from version 5.0 to 5.1
- -------------------------------
- Language:
- + new module system.
- + new semantics for control variables of fors.
- + new semantics for setn/getn.
- + new syntax/semantics for varargs.
- + new long strings and comments.
- + new `mod' operator (`%')
- + new length operator #t
- + metatables for all types
- API:
- + new functions: lua_createtable, lua_get(set)field, lua_push(to)integer.
- + user supplies memory allocator (lua_open becomes lua_newstate).
- + luaopen_* functions must be called through Lua.
- Implementation:
- + new configuration scheme via luaconf.h.
- + incremental garbage collection.
- + better handling of end-of-line in the lexer.
- + fully reentrant parser (new Lua function `load')
- + better support for 64-bit machines.
- + native loadlib support for Mac OS X.
- + standard distribution in only one library (lualib.a merged into lua.a)
-
-* Changes from version 4.0 to 5.0
- -------------------------------
- Language:
- + lexical scoping.
- + Lua coroutines.
- + standard libraries now packaged in tables.
- + tags replaced by metatables and tag methods replaced by metamethods,
- stored in metatables.
- + proper tail calls.
- + each function can have its own global table, which can be shared.
- + new __newindex metamethod, called when we insert a new key into a table.
- + new block comments: --[[ ... ]].
- + new generic for.
- + new weak tables.
- + new boolean type.
- + new syntax "local function".
- + (f()) returns the first value returned by f.
- + {f()} fills a table with all values returned by f.
- + \n ignored in [[\n .
- + fixed and-or priorities.
- + more general syntax for function definition (e.g. function a.x.y:f()...end).
- + more general syntax for function calls (e.g. (print or write)(9)).
- + new functions (time/date, tmpfile, unpack, require, load*, etc.).
- API:
- + chunks are loaded by using lua_load; new luaL_loadfile and luaL_loadbuffer.
- + introduced lightweight userdata, a simple "void*" without a metatable.
- + new error handling protocol: the core no longer prints error messages;
- all errors are reported to the caller on the stack.
- + new lua_atpanic for host cleanup.
- + new, signal-safe, hook scheme.
- Implementation:
- + new license: MIT.
- + new, faster, register-based virtual machine.
- + support for external multithreading and coroutines.
- + new and consistent error message format.
- + the core no longer needs "stdio.h" for anything (except for a single
- use of sprintf to convert numbers to strings).
- + lua.c now runs the environment variable LUA_INIT, if present. It can
- be "@filename", to run a file, or the chunk itself.
- + support for user extensions in lua.c.
- sample implementation given for command line editing.
- + new dynamic loading library, active by default on several platforms.
- + safe garbage-collector metamethods.
- + precompiled bytecodes checked for integrity (secure binary dostring).
- + strings are fully aligned.
- + position capture in string.find.
- + read('*l') can read lines with embedded zeros.
-
-* Changes from version 3.2 to 4.0
- -------------------------------
- Language:
- + new "break" and "for" statements (both numerical and for tables).
- + uniform treatment of globals: globals are now stored in a Lua table.
- + improved error messages.
- + no more '$debug': full speed *and* full debug information.
- + new read form: read(N) for next N bytes.
- + general read patterns now deprecated.
- (still available with -DCOMPAT_READPATTERNS.)
- + all return values are passed as arguments for the last function
- (old semantics still available with -DLUA_COMPAT_ARGRET)
- + garbage collection tag methods for tables now deprecated.
- + there is now only one tag method for order.
- API:
- + New API: fully re-entrant, simpler, and more efficient.
- + New debug API.
- Implementation:
- + faster than ever: cleaner virtual machine and new hashing algorithm.
- + non-recursive garbage-collector algorithm.
- + reduced memory usage for programs with many strings.
- + improved treatment for memory allocation errors.
- + improved support for 16-bit machines (we hope).
- + code now compiles unmodified as both ANSI C and C++.
- + numbers in bases other than 10 are converted using strtoul.
- + new -f option in Lua to support #! scripts.
- + luac can now combine text and binaries.
-
-* Changes from version 3.1 to 3.2
- -------------------------------
- + redirected all output in Lua's core to _ERRORMESSAGE and _ALERT.
- + increased limit on the number of constants and globals per function
- (from 2^16 to 2^24).
- + debugging info (lua_debug and hooks) moved into lua_state and new API
- functions provided to get and set this info.
- + new debug lib gives full debugging access within Lua.
- + new table functions "foreachi", "sort", "tinsert", "tremove", "getn".
- + new io functions "flush", "seek".
-
-* Changes from version 3.0 to 3.1
- -------------------------------
- + NEW FEATURE: anonymous functions with closures (via "upvalues").
- + new syntax:
- - local variables in chunks.
- - better scope control with DO block END.
- - constructors can now be also written: { record-part; list-part }.
- - more general syntax for function calls and lvalues, e.g.:
- f(x).y=1
- o:f(x,y):g(z)
- f"string" is sugar for f("string")
- + strings may now contain arbitrary binary data (e.g., embedded zeros).
- + major code re-organization and clean-up; reduced module interdependecies.
- + no arbitrary limits on the total number of constants and globals.
- + support for multiple global contexts.
- + better syntax error messages.
- + new traversal functions "foreach" and "foreachvar".
- + the default for numbers is now double.
- changing it to use floats or longs is easy.
- + complete debug information stored in pre-compiled chunks.
- + sample interpreter now prompts user when run interactively, and also
- handles control-C interruptions gracefully.
-
-* Changes from version 2.5 to 3.0
- -------------------------------
- + NEW CONCEPT: "tag methods".
- Tag methods replace fallbacks as the meta-mechanism for extending the
- semantics of Lua. Whereas fallbacks had a global nature, tag methods
- work on objects having the same tag (e.g., groups of tables).
- Existing code that uses fallbacks should work without change.
- + new, general syntax for constructors {[exp] = exp, ... }.
- + support for handling variable number of arguments in functions (varargs).
- + support for conditional compilation ($if ... $else ... $end).
- + cleaner semantics in API simplifies host code.
- + better support for writing libraries (auxlib.h).
- + better type checking and error messages in the standard library.
- + luac can now also undump.
-
-* Changes from version 2.4 to 2.5
- -------------------------------
- + io and string libraries are now based on pattern matching;
- the old libraries are still available for compatibility
- + dofile and dostring can now return values (via return statement)
- + better support for 16- and 64-bit machines
- + expanded documentation, with more examples
-
-* Changes from version 2.2 to 2.4
- -------------------------------
- + external compiler creates portable binary files that can be loaded faster
- + interface for debugging and profiling
- + new "getglobal" fallback
- + new functions for handling references to Lua objects
- + new functions in standard lib
- + only one copy of each string is stored
- + expanded documentation, with more examples
-
-* Changes from version 2.1 to 2.2
- -------------------------------
- + functions now may be declared with any "lvalue" as a name
- + garbage collection of functions
- + support for pipes
-
-* Changes from version 1.1 to 2.1
- -------------------------------
- + object-oriented support
- + fallbacks
- + simplified syntax for tables
- + many internal improvements
-
-(end of HISTORY)