Added luautf8 library

Fixed #8606 (Add support for unicode gsub, gmatch, find, match and reverse)
Fixed #8600 (Using gsub on certain chars causes a graphical glich)

See https://github.com/starwing/luautf8 for more details about the library

Author: sbx320

mak.vs2008/lua5.1c_dll.vcproj

@@ -393,6 +393,10 @@
 				RelativePath="..\src\lundump.c"
 				>
 			</File>
+			<File
+				RelativePath="..\src\lutf8lib.c"
+				>
+			</File>
 			<File
 				RelativePath="..\src\lvm.c"
 				>
@@ -501,6 +505,10 @@
 				RelativePath="..\src\lzio.h"
 				>
 			</File>
+			<File
+				RelativePath="..\src\unidata.h"
+				>
+			</File>
 		</Filter>
 	</Files>
 	<Globals>

mak.vs2008/lua5.1c_dll.vcxproj

@@ -205,6 +205,7 @@
     <ClCompile Include="..\src\ltablib.c" />
     <ClCompile Include="..\src\ltm.c" />
     <ClCompile Include="..\src\lundump.c" />
+    <ClCompile Include="..\src\lutf8lib.c" />
     <ClCompile Include="..\src\lvm.c" />
     <ClCompile Include="..\src\lzio.c" />
     <ClCompile Include="..\src\print.c" />
@@ -233,6 +234,7 @@
     <ClInclude Include="..\src\lundump.h" />
     <ClInclude Include="..\src\lvm.h" />
     <ClInclude Include="..\src\lzio.h" />
+    <ClInclude Include="..\src\unidata.h" />
   </ItemGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
   <ImportGroup Label="ExtensionTargets">

mak.vs2008/lua5.1c_dll.vcxproj.filters

@@ -99,6 +99,9 @@
     <ClCompile Include="..\src\print.c">
       <Filter>src</Filter>
     </ClCompile>
+    <ClCompile Include="..\src\lutf8lib.c">
+      <Filter>src</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\src\lapi.h">
@@ -170,5 +173,8 @@
     <ClInclude Include="..\src\lzio.h">
       <Filter>inc</Filter>
     </ClInclude>
+    <ClInclude Include="..\src\unidata.h">
+      <Filter>inc</Filter>
+    </ClInclude>
   </ItemGroup>
 </Project>

mak.vs2008/lua5.1s_dll.vcproj

@@ -661,6 +661,10 @@
 				RelativePath="..\src\lundump.c"
 				>
 			</File>
+			<File
+				RelativePath="..\src\lutf8lib.c"
+				>
+			</File>
 			<File
 				RelativePath="..\src\lvm.c"
 				>
@@ -769,6 +773,10 @@
 				RelativePath="..\src\lzio.h"
 				>
 			</File>
+			<File
+				RelativePath="..\src\unidata.h"
+				>
+			</File>
 		</Filter>
 	</Files>
 	<Globals>

mak.vs2008/lua5.1s_dll.vcxproj

@@ -376,6 +376,7 @@
     <ClCompile Include="..\src\ltablib.c" />
     <ClCompile Include="..\src\ltm.c" />
     <ClCompile Include="..\src\lundump.c" />
+    <ClCompile Include="..\src\lutf8lib.c" />
     <ClCompile Include="..\src\lvm.c" />
     <ClCompile Include="..\src\lzio.c" />
     <ClCompile Include="..\src\print.c" />
@@ -404,6 +405,7 @@
     <ClInclude Include="..\src\lundump.h" />
     <ClInclude Include="..\src\lvm.h" />
     <ClInclude Include="..\src\lzio.h" />
+    <ClInclude Include="..\src\unidata.h" />
   </ItemGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
   <ImportGroup Label="ExtensionTargets">

mak.vs2008/lua5.1s_dll.vcxproj.filters

@@ -99,6 +99,9 @@
     <ClCompile Include="..\src\print.c">
       <Filter>src</Filter>
     </ClCompile>
+    <ClCompile Include="..\src\lutf8lib.c">
+      <Filter>src</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\src\lapi.h">
@@ -170,5 +173,8 @@
     <ClInclude Include="..\src\lzio.h">
       <Filter>inc</Filter>
     </ClInclude>
+    <ClInclude Include="..\src\unidata.h">
+      <Filter>inc</Filter>
+    </ClInclude>
   </ItemGroup>
 </Project>

src/Makefile.am

@@ -10,7 +10,8 @@ liblua_la_SOURCES = \
 	lstrlib.c loadlib.c linit.c \
 	lapi.h ldebug.h lgc.h lmem.h lparser.h ltable.h lzio.h ldo.h llex.h \
 	lobject.h lstate.h ltm.h lundump.h lcode.h lfunc.h llimits.h lopcodes.h \
-	lstring.h lvm.h
+	lstring.h lvm.h \
+	unidata.h lutf8lib.c
 
 EXTRA_DIST = luaconf.h.template.in
 BUILT_SOURCES = luaconf.h

src/lualib.h

@@ -43,7 +43,8 @@ LUALIB_API int (luaopen_package) (lua_State *L);
 /* open all previous libraries */
 LUALIB_API void (luaL_openlibs) (lua_State *L); 
 
-
+/* Additional luautf8 library */
+LUALIB_API int luaopen_utf8(lua_State *L);
 
 #ifndef lua_assert
 #define lua_assert(x)	((void)0)