Change the clang condition to not detect clang-cl

References:
- cursey/safetyhook#18
- https://discourse.cmake.org/t/clang-on-windows-detected-with-msvc-interface/3470

Author: mrexodia

docs/cmake-toml.md

@@ -72,7 +72,7 @@ unix = "UNIX"
 bsd = "CMAKE_SYSTEM_NAME MATCHES \"BSD\""
 linux = "CMAKE_SYSTEM_NAME MATCHES \"Linux\""
 gcc = "CMAKE_CXX_COMPILER_ID STREQUAL \"GNU\" OR CMAKE_C_COMPILER_ID STREQUAL \"GNU\""
-clang = "CMAKE_CXX_COMPILER_ID MATCHES \"Clang\" OR CMAKE_C_COMPILER_ID MATCHES \"Clang\""
+clang = "(CMAKE_CXX_COMPILER_ID MATCHES \"Clang\" AND NOT CMAKE_CXX_COMPILER_FRONTEND_VARIANT MATCHES \"^MSVC$\") OR (CMAKE_C_COMPILER_ID MATCHES \"Clang\" AND NOT CMAKE_C_COMPILER_FRONTEND_VARIANT MATCHES \"^MSVC$\")"
 msvc = "MSVC"
 root = "CMKR_ROOT_PROJECT"
 x64 = "CMAKE_SIZEOF_VOID_P EQUAL 8"

src/project_parser.cpp

@@ -265,7 +265,8 @@ Project::Project(const Project *parent, const std::string &path, bool build) : p
         conditions["bsd"] = R"cmake(CMAKE_SYSTEM_NAME MATCHES "BSD")cmake";
         conditions["linux"] = conditions["lunix"] = R"cmake(CMAKE_SYSTEM_NAME MATCHES "Linux")cmake";
         conditions["gcc"] = R"cmake(CMAKE_CXX_COMPILER_ID STREQUAL "GNU" OR CMAKE_C_COMPILER_ID STREQUAL "GNU")cmake";
-        conditions["clang"] = R"cmake(CMAKE_CXX_COMPILER_ID MATCHES "Clang" OR CMAKE_C_COMPILER_ID MATCHES "Clang")cmake";
+        conditions["clang"] =
+            R"cmake((CMAKE_CXX_COMPILER_ID MATCHES "Clang" AND NOT CMAKE_CXX_COMPILER_FRONTEND_VARIANT MATCHES "^MSVC$") OR (CMAKE_C_COMPILER_ID MATCHES "Clang" AND NOT CMAKE_C_COMPILER_FRONTEND_VARIANT MATCHES "^MSVC$"))cmake";
         conditions["msvc"] = R"cmake(MSVC)cmake";
         conditions["root"] = R"cmake(CMKR_ROOT_PROJECT)cmake";
         conditions["x64"] = R"cmake(CMAKE_SIZEOF_VOID_P EQUAL 8)cmake";