Merge branch 'master' into merge

CLI/Reduce.cpp

@@ -15,7 +15,7 @@
 
 #define VERBOSE 0 // 1 - print out commandline invocations.  2 - print out stdout
 
-#ifdef _WIN32
+#if defined(_WIN32) && !defined(__MINGW32__)
 
 const auto popen = &_popen;
 const auto pclose = &_pclose;

VM/src/lmem.cpp

@@ -98,6 +98,8 @@
  */
 #if defined(__APPLE__)
 #define ABISWITCH(x64, ms32, gcc32) (sizeof(void*) == 8 ? x64 : gcc32)
+#elif defined(__i386__) && defined(__MINGW32__) && !defined(__MINGW64__)
+#define ABISWITCH(x64, ms32, gcc32) (ms32)
 #elif defined(__i386__) && !defined(_MSC_VER)
 #define ABISWITCH(x64, ms32, gcc32) (gcc32)
 #else

docs/_pages/compatibility.md

@@ -87,7 +87,7 @@ Ephemeron tables may be implemented at some point since they do have valid uses
 | bitwise operators | ❌ | `bit32` library covers this in absence of 64-bit integers |
 | basic utf-8 support | ✔️ | we include `utf8` library and other UTF8 features |
 | functions for packing and unpacking values (string.pack/unpack/packsize) | ✔️ | |
-| floor division | 🔜 | |
+| floor division | ✔️ | |
 | `ipairs` and the `table` library respect metamethods | ❌ | no strong use cases, performance implications |
 | new function `table.move` | ✔️ | |
 | `collectgarbage("count")` now returns only one result | ✔️ | |

docs/_pages/syntax.md

@@ -273,3 +273,9 @@ This restriction is made to prevent developers using other programming languages
 Luau currently does not support backtick string literals as a type annotation, so `` type Foo = `Foo` `` is invalid.
 
 Function calls with a backtick string literal without parenthesis is not supported, so `` print`hello` `` is invalid.
+
+## Floor division (`//`)
+
+Luau implements support for floor division operator (`//`) for numbers as well as support for `__idiv` metamethod. The syntax and semantics follow [Lua 5.3](https://www.lua.org/manual/5.3/manual.html#3.4.1).
+
+For numbers, `a // b` is equal to `math.floor(a / b)`; when `b` is 0, `a // b` results in infinity or NaN as appropriate.

rfcs/syntax-floor-division-operator.md

@@ -1,5 +1,7 @@
 # Floor division operator
 
+**Status**: Implemented
+
 ## Summary
 
 Add floor division operator `//` to ease computing with integers.