diff --git a/features_c11.yaml b/features_c11.yaml
index df477ab..820b5f8 100644
--- a/features_c11.yaml
+++ b/features_c11.yaml
@@ -18,6 +18,7 @@ features:
       - MSVC 14.27
       - Xcode 16.1
       - TinyCC
+      - R++ 2021.3
   - desc: "Anonymous structures and unions"
     paper: N1444
     content: c-anonymous-struct-union.md
@@ -34,6 +35,7 @@ features:
       - Clang 3.3
       - MSVC 14.27
       - Xcode 16.1
+      - R++
   - desc: "Atomic operations (`_Atomic`, `<stdatomic.h>`)"
     paper: N1485
     content: c-atomic.md
diff --git a/features_c23.yaml b/features_c23.yaml
index 703eb9e..d779496 100644
--- a/features_c23.yaml
+++ b/features_c23.yaml
@@ -7,6 +7,7 @@ features:
       - Clang 9
       - MSVC
       - Xcode 11.4
+      - R++
   - desc: "`[[nodiscard]]`"
     paper: N2267
     summary: "Marks a return value that should not be ignored."
@@ -14,6 +15,7 @@ features:
       - GCC 10
       - Clang 9
       - Xcode 11.4
+      - R++
     content: c-nodiscard.md
   - desc: "`[[maybe_unused]]`"
     paper: N2270
@@ -21,12 +23,14 @@ features:
       - GCC 10
       - Clang 9
       - Xcode 11.4
+      - R++
   - desc: "`[[deprecated]]`"
     paper: N2334
     support:
       - GCC 10
       - Clang 9
       - Xcode 11.4
+      - R++
   - desc: "[Attributes](https://cppreference.com/c/language/attributes)"
     paper:
       - N2335
@@ -36,23 +40,27 @@ features:
       - GCC 10
       - Clang 9
       - Xcode 11.4
+      - R++
   - desc: "IEEE 754 decimal floating-point types"
     paper: N2341
     support:
       - GCC 4.2 (partial)
       - GCC 12
+      - R++ 2025.2
   - desc: "`[[fallthrough]]`"
     paper: N2408
     support:
       - GCC 10
       - Clang 9
       - Xcode 11.4
+      - R++
   - desc: "[u8 character constants](https://cppreference.com/c/language/character_constant)"
     paper: N2418
     support:
       - GCC 10
       - Clang 15
       - Xcode 15
+      - R++
   - desc: "Removal of [function definitions](https://cppreference.com/c/language/function_definition) without prototype"
     paper: N2432
     support:
@@ -65,12 +73,14 @@ features:
       - GCC 11
       - Clang 10
       - Xcode 14
+      - R++
   - desc: "Unnamed parameters in function definitions"
     paper: N2480
     support:
       - GCC 11
       - Clang 11
       - Xcode 13
+      - R++
   - desc: "[Labels](https://cppreference.com/c/language/statements#Labels) before declarations and end of blocks"
     paper: N2508
     support:
@@ -81,6 +91,10 @@ features:
       - Clang 18
       - MSVC (partial)
       - Xcode 15
+      - tool: R++
+        status: partial
+        issue: RSCPP-33733
+        note: "Only a label at the end of a block is confirmed."
   - desc: "[Binary integer constants](https://cppreference.com/c/language/integer_constant)"
     paper: N2549
     content: c-binary-literals.md
@@ -98,18 +112,21 @@ features:
       - Xcode 16.3
       - owcc
       - TinyCC
+      - R++
   - desc: "[__has_c_attribute](https://cppreference.com/c/language/attributes#Attribute_testing) in preprocessor conditionals"
     paper: N2553
     support:
       - GCC 11
       - Clang 9
       - Xcode 11.4
+      - R++ 2024.2
   - desc: "Allow duplicate attributes"
     paper: N2557
     support:
       - GCC 11
       - Clang 13
       - Xcode 11.4
+      - R++
   - desc: "IEEE 754 interchange and extended types"
     paper: N2601
     support:
@@ -137,6 +154,7 @@ features:
       - tool: MSVC 14.0
         note: "Supported as an extension."
       - Xcode 13.4
+      - R++
   - desc: "[`#elifdef` and `#elifndef`](https://cppreference.com/c/preprocessor/conditional)"
     paper: N2645
     content: c-elifdef.md
@@ -145,11 +163,13 @@ features:
       - Clang 13
       - MSVC 14.40
       - Xcode 13.3
+      - R++ 2024.2
   - desc: "Type change of [u8 string literals](https://cppreference.com/c/language/string_literal) to `char8_t[]`"
     paper: N2653
     support:
       - GCC 13
       - Clang 19
+      - R++
   - desc: "`[[maybe_unused]]` for labels"
     paper: N2662
     support:
@@ -164,6 +184,7 @@ features:
       - Xcode 16.1
       - owcc
       - TinyCC
+      - R++ 2023.2
   - desc: "Bit-precise integer types (`_BitInt`)"
     paper: N2763
     content: c-bitint.md
@@ -173,12 +194,14 @@ features:
         note: "Only supported on IA-32, x86-64 and AArch64 LE."
       - Clang 15
       - Xcode 15
+      - R++ 2025.2
   - desc: "`[[noreturn]]`"
     paper: N2764
     support:
       - GCC 13
       - Clang 15
       - Xcode 15
+      - R++
   - desc: "Suffixes for bit-precise integer constants"
     paper: N2775
     support:
@@ -200,6 +223,7 @@ features:
       - MSVC 14.11
       - Xcode
       - TinyCC
+      - R++
   - desc: "Identifier Syntax using Unicode Standard Annex 31"
     paper: N2836
     support:
@@ -237,6 +261,7 @@ features:
       - tool: Xcode
         status: partial
         note: "Supported as an extension. Only typeof (and `__typeof__` in strict modes) supported."
+      - R++ 2024.3
   - desc: "New spelling of keywords"
     paper: N2934
     support:
@@ -275,6 +300,7 @@ features:
       - GCC 15
       - Clang 19
       - Xcode 26
+      - R++ 2026.1
   - desc: "`constexpr` objects"
     paper: N3018
     content: c-constexpr.md
@@ -306,6 +332,7 @@ features:
       - Clang 12 (partial)
       - MSVC 14.39
       - Xcode 14
+      - R++ 2023.1
   - desc: "Improved tag compatibility"
     paper: N3037
     support:
diff --git a/features_c2y.yaml b/features_c2y.yaml
index 94730cf..e39f47a 100644
--- a/features_c2y.yaml
+++ b/features_c2y.yaml
@@ -187,6 +187,7 @@ features:
       - GCC 16
       - Clang 21
       - Xcode 26.4
+      - R++ 2026.1
 
   - desc: "Restartable Functions for Efficient Character Conversions"
     paper: N3366
@@ -242,6 +243,7 @@ features:
       - Clang 22
       - tool: Xcode 16.3
         note: "Supported as a pre-existing GNU extension prior to C2y standardization."
+      - R++
 
   - desc: "Complex operators"
     paper: N3460
diff --git a/features_c99.yaml b/features_c99.yaml
index eba2dfc..ba6114d 100644
--- a/features_c99.yaml
+++ b/features_c99.yaml
@@ -42,6 +42,7 @@ features:
         status: partial
         note: "`parsed with -zastd=c99 (for wcc*), but does not change the code."
       - TinyCC
+      - R++
   - desc: "Enhanced [arithmetic types](https://cppreference.com/c/language/arithmetic_types)"
     paper:
       - N815
@@ -55,6 +56,7 @@ features:
       - GCC
       - Clang (partial)
       - Xcode (partial)
+      - R++
   - desc: "Flexible array members"
     content: c-flexible-array.md
     support:
@@ -63,6 +65,7 @@ features:
       - Xcode
       - owcc
       - TinyCC
+      - R++
   - desc: "[Variable-length array](https://cppreference.com/c/language/array#Variable-length_arrays) (VLA) types"
     paper: N683
     content: c-vla.md
@@ -124,6 +127,7 @@ features:
       - Xcode
       - owcc
       - TinyCC
+      - R++
   - desc: "[Compound literals](https://cppreference.com/c/language/compound_literal)"
     paper: N716
     content: c-compound-literals.md
@@ -132,6 +136,7 @@ features:
       - Clang
       - MSVC
       - Xcode 14
+      - R++
   - desc: "Floating-point environment"
     summary: "Runtime access to the floating-point environment."
     support:
@@ -198,12 +203,14 @@ features:
       - Xcode 14
       - owcc 1.2
       - TinyCC
+      - R++
   - desc: "Cvr-qualifiers and `static` in `[]` within function declarations"
     summary: "Qualifiers and `static` array sizes in function parameters."
     support:
       - GCC 3.1
       - Clang
       - Xcode
+      - R++ 2024.1
     content: c-array-parameter-qualifiers.md
   - desc: "[Variadic macros](https://cppreference.com/c/preprocessor/replace)"
     paper: N707
@@ -215,6 +222,7 @@ features:
       - Xcode 14
       - owcc
       - TinyCC
+      - R++
   - desc: "`_Pragma` preprocessor operator"
     summary: "Emits a pragma from within a macro expansion."
     paper: N634
@@ -226,6 +234,7 @@ features:
         note: "Requires /std:c11 or later."
       - Xcode 14
       - owcc
+      - R++
     content: c-pragma-operator.md
   - desc: "Standard pragmas for floating-point evaluation"
     summary: "Standard `STDC` pragmas controlling floating-point code generation."
diff --git a/features_cpp11.yaml b/features_cpp11.yaml
index fe67984..7026358 100644
--- a/features_cpp11.yaml
+++ b/features_cpp11.yaml
@@ -10,6 +10,7 @@ features:
         note: "Buggy variadic macros."
       - MSVC 14.26
       - Xcode
+      - R++
 
   - desc: "`static_assert`"
     paper: N1720
@@ -18,6 +19,7 @@ features:
       - Clang 2.9
       - MSVC 10.0
       - Xcode
+      - R++
     ftm:
       - name: __cpp_static_assert
         value: 200410L
@@ -29,6 +31,7 @@ features:
       - Clang
       - MSVC 8.0
       - Xcode
+      - R++
 
   - desc: "Extended `friend` declarations"
     paper: N1791
@@ -37,6 +40,7 @@ features:
       - Clang 2.9
       - MSVC 10.0
       - Xcode
+      - R++
 
   - desc: "[`long long`](https://cppreference.com/cpp/language/types#long_long)"
     paper: N1811
@@ -45,6 +49,7 @@ features:
       - Clang
       - MSVC 8.0
       - Xcode
+      - R++
 
   - desc: "[`auto`](https://cppreference.com/cpp/language/auto)"
     paper: N1984
@@ -54,6 +59,7 @@ features:
       - Clang
       - MSVC 10.0
       - Xcode
+      - R++
 
   - desc: "[Delegating constructors](https://cppreference.com/cpp/language/initializer_list#Delegating_constructor)"
     paper: N1986
@@ -62,6 +68,7 @@ features:
       - Clang 3
       - MSVC 12.0
       - Xcode
+      - R++
     ftm:
       - name: __cpp_delegating_constructors
         value: 200604L
@@ -73,6 +80,7 @@ features:
       - Clang
       - MSVC 6.0
       - Xcode
+      - R++
 
   - desc: "`constexpr`"
     paper: N2235
@@ -82,6 +90,7 @@ features:
       - Clang 3.1
       - MSVC 14.0
       - Xcode
+      - R++
     ftm:
       - name: __cpp_constexpr
         value: 200704L
@@ -93,6 +102,7 @@ features:
       - Clang 2.9
       - MSVC 14.0
       - Xcode
+      - R++
     ftm:
       - name: __cpp_unicode_characters
         value: 200704L
@@ -111,6 +121,7 @@ features:
       - MSVC 8.0 (partial)
       - MSVC 14.0
       - Xcode
+      - R++
 
   - desc: "[Template aliases](https://cppreference.com/cpp/language/type_alias)"
     paper: N2258
@@ -120,6 +131,7 @@ features:
       - Clang 3
       - MSVC 12.0
       - Xcode
+      - R++
     ftm:
       - name: __cpp_alias_templates
         value: 200704L
@@ -131,6 +143,7 @@ features:
       - Clang 3
       - MSVC 14.0
       - Xcode
+      - R++
 
   - desc: "`alignof`"
     paper: N2341
@@ -139,6 +152,7 @@ features:
       - Clang 2.9
       - MSVC 14.0
       - Xcode
+      - R++
 
   - desc: "Defaulted and deleted functions"
     paper: N2346
@@ -147,6 +161,7 @@ features:
       - Clang 3
       - MSVC 12.0
       - Xcode
+      - R++
 
   - desc: "[Strongly-typed `enum`](https://cppreference.com/cpp/language/enum#Scoped_enumerations)"
     paper: N2347
@@ -156,6 +171,7 @@ features:
       - Clang 2.9
       - MSVC 11.0
       - Xcode
+      - R++
 
   - desc: "[Atomic operations](https://cppreference.com/cpp/atomic#Atomic_operations)"
     paper: N2427
@@ -164,6 +180,7 @@ features:
       - Clang 3.1
       - MSVC 11.0
       - Xcode
+      - R++
 
   - desc: "`nullptr`"
     paper: N2431
@@ -173,6 +190,7 @@ features:
       - Clang 2.9
       - MSVC 10.0
       - Xcode
+      - R++
 
   - desc: "Explicit [conversion operators](https://cppreference.com/cpp/language/cast_operator)"
     paper: N2437
@@ -181,6 +199,7 @@ features:
       - Clang 3
       - MSVC 12.0
       - Xcode
+      - R++
 
   - desc: "Ref-qualifiers"
     paper: N2439
@@ -189,6 +208,7 @@ features:
       - Clang 2.9
       - MSVC 14.0
       - Xcode
+      - R++
     ftm:
       - name: __cpp_ref_qualifiers
         value: 200710L
@@ -200,6 +220,7 @@ features:
       - Clang 3
       - MSVC 14.0
       - Xcode
+      - R++
     ftm:
       - name: __cpp_unicode_literals
         value: 200710L
@@ -211,6 +232,7 @@ features:
       - Clang
       - MSVC 12.0
       - Xcode
+      - R++
     ftm:
       - name: __cpp_raw_strings
         value: 200710L
@@ -222,6 +244,7 @@ features:
       - Clang 2.9
       - MSVC 14.0
       - Xcode
+      - R++
 
   - desc: "[Inheriting constructors](https://cppreference.com/cpp/language/using_declaration#Inheriting_constructors)"
     paper: N2540
@@ -230,6 +253,7 @@ features:
       - Clang 3.3
       - MSVC 14.0
       - Xcode
+      - R++
     ftm:
       - name: __cpp_inheriting_constructors
         value: 200802L
@@ -241,6 +265,7 @@ features:
       - Clang 2.9
       - MSVC 10.0
       - Xcode
+      - R++
 
   - desc: "Unrestricted [unions](https://cppreference.com/cpp/language/union)"
     paper: N2544
@@ -249,6 +274,7 @@ features:
       - Clang 3
       - MSVC 14.0
       - Xcode
+      - R++
 
   - desc: "[Variadic templates](https://cppreference.com/cpp/language/parameter_pack)"
     paper: [N2242, N2555]
@@ -258,6 +284,7 @@ features:
       - Clang 2.9
       - MSVC 12.0
       - Xcode
+      - R++
     ftm:
       - name: __cpp_variadic_templates
         value: 200704L
@@ -269,6 +296,7 @@ features:
       - Clang 2.9
       - MSVC 14.14
       - Xcode
+      - R++
 
   - desc: "Local and unnamed types as template parameters"
     paper: N2657
@@ -277,6 +305,7 @@ features:
       - Clang 2.9
       - MSVC 10.0
       - Xcode
+      - R++
 
   - desc: "[Thread-local storage](https://cppreference.com/cpp/language/storage_duration)"
     paper: N2659
@@ -288,6 +317,7 @@ features:
       - MSVC 10.0 (partial)
       - MSVC 14.0
       - Xcode
+      - R++
     ftm:
       - name: __cpp_threadsafe_static_init
         value: 200806L
@@ -299,6 +329,7 @@ features:
       - Clang 2.9
       - MSVC 14.0
       - Xcode
+      - R++
     ftm:
       - name: __cpp_threadsafe_static_init
         value: 200806L
@@ -311,6 +342,7 @@ features:
       - Clang 3.1
       - MSVC 12.0
       - Xcode
+      - R++
     ftm:
       - name: __cpp_initializer_lists
         value: 200806L
@@ -322,6 +354,7 @@ features:
       - Clang 3
       - MSVC 12.0
       - Xcode
+      - R++
     ftm:
       - name: __cpp_nsdmi
         value: 200809L
@@ -333,6 +366,7 @@ features:
       - Clang 3.3
       - MSVC 14.0
       - Xcode
+      - R++
     ftm:
       - name: __cpp_attributes
         value: 200809L
@@ -341,7 +375,11 @@ features:
 
   - desc: "`[[carries_dependency]]`"
     paper: [N2556, N2643]
-    support: [Clang 3.3, Xcode]
+    support:
+      - Clang 3.3
+      - Xcode
+      - tool: R++
+        status: unsupported
     ftm:
       - name: __has_cpp_attribute(carries_dependency)
         value: 200809L
@@ -353,6 +391,7 @@ features:
       - Clang 3.1
       - MSVC 11.0
       - Xcode
+      - R++
 
   - desc: "[User-defined literals](https://cppreference.com/cpp/language/user_literal)"
     paper: N2765
@@ -361,6 +400,7 @@ features:
       - Clang 3.1
       - MSVC 14.0
       - Xcode
+      - R++
     ftm:
       - name: __cpp_user_defined_literals
         value: 200809L
@@ -375,6 +415,7 @@ features:
       - MSVC 10.0 (partial)
       - MSVC 11.0
       - Xcode
+      - R++
     ftm:
       - name: __cpp_rvalue_references
         value: 200610L
@@ -388,6 +429,7 @@ features:
       - MSVC 10.0 (partial)
       - MSVC 11.0
       - Xcode
+      - R++
     ftm:
       - name: __cpp_lambdas
         value: 200907L
@@ -400,6 +442,7 @@ features:
       - Clang 3
       - MSVC 11.0
       - Xcode
+      - R++
     ftm:
       - name: __cpp_range_based_for
         value: 200907L
@@ -412,6 +455,7 @@ features:
       - Clang 3
       - MSVC 14.0
       - Xcode
+      - R++
 
   - desc: "Defaulted move [special member functions](https://cppreference.com/cpp/language/member_functions#Special_member_functions)"
     paper: N3053
@@ -421,6 +465,7 @@ features:
       - Clang 3
       - MSVC 14.0
       - Xcode
+      - R++
 
   - desc: "`override` and `final`"
     paper: [N2928, N3206, N3272]
@@ -431,6 +476,7 @@ features:
       - MSVC 8.0 (partial)
       - MSVC 11.0
       - Xcode
+      - R++
 
   - desc: "`decltype`"
     paper: [N2343, N3276]
@@ -442,6 +488,7 @@ features:
       - MSVC 10.0 (partial)
       - MSVC 11.0
       - Xcode
+      - R++
     ftm:
       - name: __cpp_decltype
         value: 200707L
diff --git a/features_cpp14.yaml b/features_cpp14.yaml
index b99c7a0..18de3b6 100644
--- a/features_cpp14.yaml
+++ b/features_cpp14.yaml
@@ -7,6 +7,7 @@ features:
       - Clang 3.4
       - MSVC 12.0
       - Xcode
+      - R++
 
   - desc: "[Binary literals](https://cppreference.com/cpp/language/integer_literal)"
     paper: N3472
@@ -16,6 +17,7 @@ features:
       - Clang 2.9
       - MSVC 14.0
       - Xcode
+      - R++
     ftm:
       - name: __cpp_binary_literals
         value: 201304L
@@ -33,6 +35,7 @@ features:
       - Clang 3.4
       - MSVC 14.0
       - Xcode
+      - R++
     ftm:
       - name: __cpp_decltype_auto
         value: 201304L
@@ -47,6 +50,7 @@ features:
       - Clang 3.4
       - MSVC 14.0
       - Xcode
+      - R++
     ftm:
       - name: __cpp_init_captures
         value: 201304L
@@ -59,6 +63,7 @@ features:
       - Clang 3.4
       - MSVC 14.0
       - Xcode
+      - R++
     ftm:
       - name: __cpp_generic_lambdas
         value: 201304L
@@ -71,6 +76,7 @@ features:
       - Clang 3.4
       - MSVC 14.0
       - Xcode
+      - R++
     ftm:
       - name: __cpp_variable_templates
         value: 201304L
@@ -83,6 +89,7 @@ features:
       - Clang 3.4
       - MSVC 14.10
       - Xcode
+      - R++
     ftm:
       - name: __cpp_constexpr
         value: 201304L
@@ -94,13 +101,14 @@ features:
       - Clang 3.3
       - MSVC 14.10
       - Xcode
+      - R++
     ftm:
       - name: __cpp_aggregate_nsdmi
         value: 201304L
 
   - desc: "Omitting/extending [memory allocations](https://cppreference.com/cpp/language/new#Allocation)"
     paper: N3664
-    support: [Clang 3.4, Xcode]
+    support: [Clang 3.4, Xcode, R++]
 
   - desc: "`[[deprecated]]` attribute"
     paper: N3760
@@ -109,6 +117,7 @@ features:
       - Clang 3.4
       - MSVC 14.0
       - Xcode
+      - R++
     ftm:
       - name: __has_cpp_attribute(deprecated)
         value: 201309L
@@ -120,6 +129,7 @@ features:
       - Clang 3.4
       - MSVC 14.0
       - Xcode
+      - R++
     ftm:
       - name: __cpp_sized_deallocation
         value: 201309L
@@ -131,6 +141,7 @@ features:
       - Clang 3.4
       - MSVC 14.0
       - Xcode
+      - R++
     ftm:
       - name: __cpp_digit_separators
         value: 201309L
diff --git a/features_cpp17.yaml b/features_cpp17.yaml
index 21dcb77..74613bc 100644
--- a/features_cpp17.yaml
+++ b/features_cpp17.yaml
@@ -7,6 +7,7 @@ features:
       - Clang 3.8
       - MSVC 14.0
       - Xcode
+      - R++
 
   - desc: "Allow `typename` in a template template parameter"
     paper: N4051
@@ -15,6 +16,7 @@ features:
       - Clang 3.5
       - MSVC 14.0
       - Xcode
+      - R++
 
   - desc: "Removing trigraphs??!"
     paper: N4086
@@ -23,6 +25,7 @@ features:
       - Clang 3.5
       - MSVC 10.0
       - Xcode
+      - R++
 
   - desc: "Nested `namespace` definition"
     paper: N4230
@@ -32,6 +35,7 @@ features:
       - Clang 3.6
       - MSVC 14.0
       - Xcode
+      - R++
     content: nested-namespaces.md
 
   - desc: "Extending `static_assert`, v2"
@@ -41,6 +45,7 @@ features:
       - Clang 2.5
       - MSVC 14.10
       - Xcode
+      - R++
     ftm:
       - name: __cpp_static_assert
         value: 201411L
@@ -56,6 +61,7 @@ features:
       - Clang 3.6
       - MSVC 14.0
       - Xcode
+      - R++
     ftm:
       - name: __cpp_enumerator_attributes
         value: 201411L
@@ -71,6 +77,7 @@ features:
       - Clang 3.6
       - MSVC 14.0
       - Xcode
+      - R++
     ftm:
       - name: __cpp_nontype_template_args
         value: 201411L
@@ -99,6 +106,7 @@ features:
       - Clang 3.8
       - MSVC 14.11
       - Xcode
+      - R++
 
   - desc: "Remove deprecated `operator++(bool)`"
     paper: P0002
@@ -107,6 +115,7 @@ features:
       - Clang 3.8
       - MSVC 14.11
       - Xcode
+      - R++
 
   - desc: "Make exception specifications be part of the type system"
     paper: P0012
@@ -115,6 +124,7 @@ features:
       - Clang 4
       - MSVC 14.12
       - Xcode
+      - R++
     ftm:
       - name: __cpp_noexcept_function_type
         value: 201510L
@@ -127,6 +137,7 @@ features:
       - Clang
       - MSVC 14.11
       - Xcode
+      - R++
 
   - desc: "Rewording inheriting constructors"
     paper: P0136
@@ -136,6 +147,8 @@ features:
       - tool: MSVC 14.14
         note: "Not supported in C++14 mode."
       - Xcode
+      - tool: R++
+        status: unsupported
     ftm:
       - name: __cpp_inheriting_constructors
         value: 201511L
@@ -147,6 +160,7 @@ features:
       - Clang 3.9
       - MSVC 14.14
       - Xcode
+      - R++
     ftm:
       - name: __cpp_aggregate_bases
         value: 201603L
@@ -160,6 +174,7 @@ features:
       - Clang 3.6
       - MSVC 14.12
       - Xcode
+      - R++
     ftm:
       - name: __cpp_fold_expressions
         value: 201603L
@@ -172,6 +187,7 @@ features:
       - Clang 3.9
       - MSVC 14.11
       - Xcode
+      - R++
 
   - desc: "Construction rules for `enum class` values"
     paper: P0138
@@ -180,6 +196,7 @@ features:
       - Clang 3.9
       - MSVC 14.11
       - Xcode
+      - R++
 
   - desc: "`constexpr` lambdas"
     paper: P0170
@@ -189,6 +206,7 @@ features:
       - Clang 5
       - MSVC 14.11
       - Xcode
+      - R++
     ftm:
       - name: __cpp_constexpr
         value: 201603L
@@ -200,6 +218,7 @@ features:
       - Clang 3.9
       - MSVC 14.10
       - Xcode
+      - R++
     ftm:
       - name: __cpp_range_based_for
         value: 201603L
@@ -212,6 +231,7 @@ features:
       - Clang 3.9
       - MSVC 14.10
       - Xcode
+      - R++
 
   - desc: "Attribute `[[nodiscard]]`"
     paper: P0189
@@ -221,6 +241,7 @@ features:
       - Clang 3.9
       - MSVC 14.11
       - Xcode
+      - R++
 
   - desc: "Attribute `[[maybe_unused]]`"
     paper: P0212
@@ -230,6 +251,7 @@ features:
       - Clang 3.9
       - MSVC 14.11
       - Xcode
+      - R++
 
   - desc: "Hexadecimal floating literals"
     paper: P0245
@@ -238,6 +260,7 @@ features:
       - Clang
       - MSVC 14.11
       - Xcode
+      - R++
     ftm:
       - name: __cpp_hex_float
         value: 201603L
@@ -249,6 +272,7 @@ features:
       - Clang 3.9
       - MSVC 14.11
       - Xcode
+      - R++
 
   - desc: "Dynamic memory allocation for over-aligned data"
     paper: P0035
@@ -257,6 +281,7 @@ features:
       - Clang 4
       - MSVC 14.12
       - Xcode 10
+      - R++
     ftm:
       - name: __cpp_aligned_new
         value: 201606L
@@ -269,6 +294,7 @@ features:
       - Clang 4
       - MSVC 14.14
       - Xcode
+      - R++
     ftm:
       - name: __cpp_nontype_template_parameter_auto
         value: 201606L
@@ -282,6 +308,7 @@ features:
       - Clang 4
       - MSVC 14.13
       - Xcode
+      - R++
     ftm:
       - name: __cpp_guaranteed_copy_elision
         value: 201606L
@@ -293,6 +320,7 @@ features:
       - Clang 6
       - MSVC 14.14
       - Xcode
+      - R++
 
   - desc: "Refining expression evaluation order for idiomatic C++"
     paper: P0145
@@ -301,6 +329,7 @@ features:
       - Clang 4
       - MSVC 14.14
       - Xcode
+      - R++
 
   - desc: "Proposed wording for structured bindings"
     paper: P0217
@@ -311,6 +340,7 @@ features:
       - Clang 4
       - MSVC 14.11
       - Xcode
+      - R++
     ftm:
       - name: __cpp_structured_bindings
         value: 201606L
@@ -322,6 +352,7 @@ features:
       - Clang 3.9
       - MSVC 14.0
       - Xcode
+      - R++
 
   - desc: "`constexpr if` statements"
     paper: P0292
@@ -332,6 +363,7 @@ features:
       - Clang 3.9
       - MSVC 14.11
       - Xcode
+      - R++
     ftm:
       - name: __cpp_if_constexpr
         value: 201606L
@@ -344,6 +376,7 @@ features:
       - Clang 3.9
       - MSVC 14.11
       - Xcode
+      - R++
 
   - desc: "`inline` variables"
     paper: P0386
@@ -354,6 +387,7 @@ features:
       - Clang 3.9
       - MSVC 14.12
       - Xcode
+      - R++
     ftm:
       - name: __cpp_inline_variables
         value: 201606L
@@ -365,6 +399,7 @@ features:
       - Clang 4
       - MSVC 14.12
       - Xcode
+      - R++
 
   - desc: "Pack expansions in `using`-declarations"
     paper: P0195
@@ -373,6 +408,7 @@ features:
       - Clang 4
       - MSVC 14.14
       - Xcode
+      - R++
     ftm:
       - name: __cpp_variadic_using
         value: 201611L
@@ -384,6 +420,9 @@ features:
       - Clang 4
       - MSVC 14.12
       - Xcode
+      - tool: R++
+        status: unsupported
+        issue: RSCPP-25151
     ftm:
       - name: __cpp_template_template_args
         value: 201611L
@@ -397,6 +436,7 @@ features:
       - Clang 5
       - MSVC 14.14
       - Xcode
+      - R++
     ftm:
       - name: __cpp_deduction_guides
         value: 201703L
diff --git a/features_cpp20.yaml b/features_cpp20.yaml
index 7788154..bf691c6 100644
--- a/features_cpp20.yaml
+++ b/features_cpp20.yaml
@@ -7,6 +7,7 @@ features:
       - Clang 6
       - MSVC 14.25
       - Xcode 10
+      - R++
 
   - desc: "`const&`-qualified pointers to members"
     paper: P0704
@@ -15,6 +16,7 @@ features:
       - Clang 6
       - MSVC 14.0
       - Xcode 10
+      - R++
 
   - desc: "Allow lambda capture `[=, this]`"
     paper: P0409
@@ -23,6 +25,7 @@ features:
       - Clang 6
       - MSVC 14.22
       - Xcode 10
+      - R++
 
   - desc: "`__VA_OPT__`"
     paper: [P0306, P1042]
@@ -38,6 +41,7 @@ features:
       - Clang 9
       - MSVC 14.25
       - Xcode 12
+      - R++ 2023.1
     content: va-opt.md
 
   - desc: "Designated initializers"
@@ -55,6 +59,7 @@ features:
       - Clang 10
       - MSVC 14.21
       - Xcode 12
+      - R++
     ftm:
       - name: __cpp_designated_initializers
         value: 201707L
@@ -67,6 +72,7 @@ features:
       - Clang 9
       - MSVC 14.22
       - Xcode 11
+      - R++
     ftm:
       - name: __cpp_generic_lambdas
         value: 201707L
@@ -78,6 +84,7 @@ features:
       - Clang 6
       - MSVC 14.14
       - Xcode
+      - R++
 
   - desc: "Concepts"
     paper: P0734
@@ -93,6 +100,7 @@ features:
       - tool: Xcode 12
         status: partial
         note: "The following papers are not implemented: [P2103](https://www.open-std.org/jtc1/sc22/wg21/docs/papers/2020/p2103r0.html), DR1496, DR1734 and [P0848](https://wg21.link/P0848)."
+      - R++
     ftm:
       - name: __cpp_concepts
         value: 201907L
@@ -129,10 +137,16 @@ features:
       - Clang 8
       - MSVC 14.25
       - Xcode 11
+      - R++
 
   - desc: "Simplifying implicit lambda capture"
     paper: P0588
-    support: [GCC 8, MSVC 14.24]
+    support:
+      - GCC 8
+      - MSVC 14.24
+      - tool: R++
+        status: unsupported
+        issue: RSCPP-31582
 
   - desc: "ADL and function templates that are not visible"
     paper: P0846
@@ -141,6 +155,7 @@ features:
       - Clang 9
       - MSVC 14.21
       - Xcode 11.4
+      - R++
 
   - desc: "`const` mismatch with defaulted copy constructor"
     paper: P0641
@@ -149,6 +164,7 @@ features:
       - Clang 8
       - MSVC 14.0
       - Xcode 10.2
+      - R++
 
   - desc: "Specify when `constexpr` function definitions are needed for constant evaluation"
     paper: P0859
@@ -173,6 +189,7 @@ features:
       - Clang 10
       - MSVC 14.20
       - Xcode 12
+      - R++
     ftm:
       - name: __cpp_impl_three_way_comparison
         value: 201907L
@@ -199,6 +216,7 @@ features:
       - MSVC 14.23
       - Clang 16
       - Xcode 12
+      - R++
 
   - desc: "Access checking on specializations"
     paper: P0692
@@ -208,6 +226,7 @@ features:
       - Clang 14
       - MSVC 14.26
       - Xcode 14
+      - R++
 
   - desc: "Default constructible and assignable stateless lambdas"
     paper: P0624
@@ -216,6 +235,7 @@ features:
       - Clang 8
       - MSVC 14.22
       - Xcode 10.2
+      - R++
 
   - desc: "Wording for lambdas in unevaluated contexts"
     paper: P0315
@@ -232,6 +252,7 @@ features:
       - tool: Xcode 13.4.1
         status: partial
         note: "Not supported: [temp.deduct/9]"
+      - R++
 
   - desc: "Transformation trait `std::remove_cvref`"
     paper: P0550
@@ -363,6 +384,7 @@ features:
       - Clang 9
       - MSVC 14.28
       - Xcode 11.4
+      - R++ 2023.2
 
   - desc: "Relaxing the range-`for` loop customization point finding rules"
     paper: P0962
@@ -371,6 +393,7 @@ features:
       - Clang 8
       - MSVC 14.25
       - Xcode 11
+      - R++
 
   - desc: "Allow structured bindings to accessible members"
     paper: P0969
@@ -379,6 +402,7 @@ features:
       - Clang 8
       - MSVC 14.20
       - Xcode 10.2
+      - R++
 
   - desc: "Relaxing the structured bindings customization point finding rules"
     paper: P0961
@@ -387,6 +411,7 @@ features:
       - Clang 8
       - MSVC 14.20
       - Xcode 10.2
+      - R++
 
   - desc: "Down with `typename`!"
     paper: P0634
@@ -395,6 +420,7 @@ features:
       - Clang 16
       - MSVC 14.29
       - Xcode 16
+      - R++ 2025.2
 
   - desc: "Pack-expansions in lambda init-captures"
     paper: P0780
@@ -404,6 +430,7 @@ features:
       - Clang 9
       - MSVC 14.22
       - Xcode 11.4
+      - R++
     ftm:
       - name: __cpp_init_captures
         value: 201803L
@@ -417,6 +444,7 @@ features:
       - Clang 12
       - MSVC 14.26
       - Xcode 13
+      - R++
 
   - desc: "Symmetry for spaceship"
     paper: P0905
@@ -506,6 +534,9 @@ features:
       - Clang 7
       - MSVC 14.22
       - Xcode 10.2
+      - tool: R++
+        status: unsupported
+        issue: RSCPP-31582
     keywords:
       - lambda
 
@@ -518,6 +549,7 @@ features:
       - MSVC 14.28
       - Xcode 13 (partial)
       - Xcode 16.3
+      - R++ 2021.3
 
   - desc: "Atomic compare-and-exchange with padding bits"
     paper: P0528
@@ -532,6 +564,8 @@ features:
       - Clang 6
       - MSVC 14.27
       - Xcode 10
+      - tool: R++
+        status: unsupported
     ftm:
       - name: __cpp_impl_destroying_delete
         value: 201806L
@@ -557,6 +591,7 @@ features:
       - Clang 9
       - MSVC 14.28
       - Xcode 11.4
+      - R++ 2021.3
     ftm:
       - name: __cpp_constexpr
         value: 201907L
@@ -570,6 +605,7 @@ features:
       - Clang 8
       - MSVC 14.20
       - Xcode 10.2
+      - R++
 
   - desc: "Consistency improvements for comparisons"
     paper: P1120
@@ -579,6 +615,8 @@ features:
       - Clang 10
       - MSVC 14.22
       - Xcode 12
+      - tool: R++
+        status: unsupported
 
   - desc: "Integrating feature-test macros"
     paper: P0941
@@ -588,6 +626,7 @@ features:
       - MSVC 14.15 (partial)
       - MSVC 14.20
       - Xcode
+      - R++
 
   - desc: "`explicit(bool)`"
     paper: P0892
@@ -597,6 +636,7 @@ features:
       - Clang 9
       - MSVC 14.24
       - Xcode 11.4
+      - R++
     ftm:
       - name: __cpp_conditional_explicit
         value: 201806L
@@ -758,6 +798,7 @@ features:
       - Clang 8
       - MSVC 14.25
       - Xcode 10.2
+      - R++ 2026.2
 
   - desc: "`dynamic_cast` and polymorphic `typeid` in constant expressions"
     paper: P1327
@@ -766,6 +807,8 @@ features:
       - Clang 9
       - MSVC 14.28
       - Xcode 11.4
+      - tool: R++
+        status: unsupported
 
   - desc: "Signed integers are two's complement"
     paper: P1236
@@ -775,6 +818,7 @@ features:
       - Clang 9
       - MSVC
       - Xcode 11.4
+      - R++
 
   - desc: "`char8_t`: A type for UTF-8 characters and strings"
     paper: P0482
@@ -785,6 +829,7 @@ features:
       - Clang 7
       - MSVC 14.22
       - Xcode 10
+      - R++
     ftm:
       - name: __cpp_char8_t
         value: 201811L
@@ -811,6 +856,7 @@ features:
       - Clang 9
       - MSVC 14.29
       - Xcode
+      - R++
 
   - desc: "Immediate functions (`consteval`)"
     paper: P1073
@@ -825,6 +871,7 @@ features:
       - MSVC 14.28 (partial)
       - MSVC 14.29
       - Xcode 15
+      - R++
     ftm:
       - name: __cpp_consteval
         value: 201811L
@@ -850,6 +897,7 @@ features:
       - MSVC 14.26 (partial)
       - MSVC 14.28
       - Xcode 12.5
+      - R++
 
   - desc: "Nested inline namespaces"
     paper: P1094
@@ -858,6 +906,7 @@ features:
       - Clang 8
       - MSVC 14.27
       - Xcode 10.2
+      - R++
 
   - desc: "Changing the active member of a `union` inside `constexpr`"
     paper: P1330
@@ -866,6 +915,7 @@ features:
       - Clang 9
       - MSVC 14.10
       - Xcode 10.3
+      - R++
     ftm:
       - name: __cpp_constexpr
         value: 202002L
@@ -1096,6 +1146,7 @@ features:
       - MSVC 14.11
       - MSVC 14.24
       - Xcode 16
+      - R++
 
   - desc: "Stronger Unicode requirements"
     paper: [P1041, P1139]
@@ -1112,6 +1163,7 @@ features:
       - Clang 16
       - MSVC 14.28
       - Xcode 16
+      - R++
     ftm:
       - name: __cpp_aggregate_paren_init
         value: 201902L
@@ -1123,6 +1175,7 @@ features:
       - Clang 9
       - MSVC 14.27
       - Xcode 11.4
+      - R++
 
   - desc: "Modules"
     paper: [P1103, P1703, P1766, P1779, P1811, P1815, P1857, P1874, P1979, P2115, P2615, P2788]
@@ -1151,6 +1204,7 @@ features:
       - MSVC 14.28
       - tool: Xcode 26
         note: "Apple Clang requires the `-fcxx-modules` flag **in addition to** `-fmodules`.<br/><br/> Xcode 26 does not ship the `clang-scan-deps` utility that is required by certain build system generators like CMake, in order to scan module dependencies.<br/> This means that C++ modules cannot be used in conjunction with CMake's Xcode generator (`-G Xcode`).\n"
+      - R++
     ftm:
       - name: __cpp_modules
         value: 201907L
@@ -1162,6 +1216,7 @@ features:
       - Clang 10
       - MSVC 14.22
       - Xcode 12
+      - R++
 
   - desc: "Coroutines"
     paper: [P0912, LWG3393]
@@ -1179,6 +1234,7 @@ features:
       - MSVC 14.28
       - Xcode 10.2 (partial)
       - Xcode 16.3
+      - R++
     ftm:
       - name: __cpp_impl_coroutine
         value: 201902L
@@ -1272,6 +1328,9 @@ features:
       - Clang 9
       - MSVC 14.25
       - Xcode 11.4
+      - tool: R++
+        status: unsupported
+        issue: RSCPP-31583
 
   - desc: "Permitting trivial default initialization in `constexpr` contexts"
     paper: P1331
@@ -1280,6 +1339,7 @@ features:
       - Clang 10
       - MSVC 14.27
       - Xcode 12
+      - R++ 2025.1
 
   - desc: "Conditionally trivial special member functions"
     paper: P0848
@@ -1288,6 +1348,7 @@ features:
       - Clang 16
       - MSVC 14.28
       - Xcode 16.3
+      - R++
     ftm:
       - name: __cpp_concepts
         value: 202002L
@@ -1308,6 +1369,7 @@ features:
       - Clang 9
       - MSVC 14.25
       - Xcode 11.4
+      - R++ 2022.3
 
   - desc: "`using` enum"
     paper: P1099
@@ -1318,6 +1380,7 @@ features:
       - Clang 13
       - MSVC 14.24
       - Xcode 13.4.1
+      - R++
     ftm:
       - name: __cpp_using_enum
         value: 201907L
@@ -1329,6 +1392,7 @@ features:
       - GCC 11
       - Clang 17
       - MSVC 14.27
+      - R++ 2021.3
     ftm:
       - name: __cpp_deduction_guides
         value: 201907L
@@ -1340,6 +1404,7 @@ features:
       - Clang 10
       - MSVC 14.28
       - Xcode 12
+      - R++
 
   - desc: "Permit conversions to arrays of unknown bound"
     paper: P0388
@@ -1348,6 +1413,8 @@ features:
       - Clang 14
       - MSVC 14.27
       - Xcode 14
+      - tool: R++
+        status: unsupported
 
   - desc: "`constinit`"
     paper: P1143
@@ -1358,6 +1425,7 @@ features:
       - Clang 10
       - MSVC 14.29
       - Xcode 12
+      - R++
     ftm:
       - name: __cpp_constinit
         value: 201907L
@@ -1378,6 +1446,7 @@ features:
       - Clang 9
       - MSVC 14.24
       - Xcode 11.4
+      - R++
 
   - desc: "Class template argument deduction for alias templates"
     paper: P1814
@@ -1387,6 +1456,7 @@ features:
         status: partial
         note: "This feature has been initially completed, but the feature macro `__cpp_deduction_guides` has not been updated."
       - MSVC 14.27
+      - R++
     ftm:
       - name: __cpp_deduction_guides
         value: 201907L
@@ -1398,6 +1468,10 @@ features:
       - Clang 13
       - MSVC 14.24
       - Xcode 13.4.1
+      - tool: R++
+        status: partial
+        issue: RSCPP-37266
+        note: "The implicit move from an rvalue reference is not implemented."
 
   - desc: "`constexpr` container operations"
     paper: P0784
@@ -1406,6 +1480,7 @@ features:
       - Clang 10
       - MSVC 14.28
       - Xcode 12
+      - R++
     ftm:
       - name: __cpp_constexpr_dynamic_alloc
         value: 201907L
@@ -1649,6 +1724,7 @@ features:
       - Clang 10
       - MSVC 14.25
       - Xcode 12
+      - R++
 
   - desc: "Inconsistencies with constant template parameters"
     paper: P1907
@@ -1658,6 +1734,7 @@ features:
       - Clang 18 (partial)
       - MSVC 14.26
       - Xcode 13.4.1 (partial)
+      - R++
     ftm:
       - name: __cpp_nontype_template_args
         value: 201911L
@@ -1709,6 +1786,7 @@ features:
       - Clang 10
       - MSVC 14.25
       - Xcode 12
+      - R++
 
   - desc: "`constexpr` for numeric algorithms"
     paper: P1645
@@ -1729,6 +1807,7 @@ features:
       - Clang 11
       - MSVC
       - Xcode 12.5
+      - R++
 
   - desc: "Converting from `T*` to `bool` should be considered narrowing"
     paper: P1957
@@ -1739,6 +1818,7 @@ features:
       - Clang 18
       - MSVC 14.27
       - Xcode 13
+      - R++
 
   - desc: "`ranges::elements_view` needs its own sentinel"
     paper: P1994
diff --git a/features_cpp23.yaml b/features_cpp23.yaml
index 2378608..5192ef4 100644
--- a/features_cpp23.yaml
+++ b/features_cpp23.yaml
@@ -8,6 +8,7 @@ features:
       - Clang 13
       - MSVC 14.43
       - Xcode 13.4.1
+      - R++ 2024.3
     ftm:
       - name: __cpp_size_t_suffix
         value: 202011L
@@ -74,6 +75,7 @@ features:
       - Clang 13
       - MSVC 14.44
       - Xcode 13.4.1
+      - R++ 2023.1
     content: lambda-omit-parens.md
 
   - desc: "Repairing input range adaptors and `std::counted_iterator`"
@@ -138,6 +140,7 @@ features:
       - Clang 14
       - MSVC 14.44
       - Xcode 14
+      - R++ 2023.2
     ftm:
       - name: __cpp_if_consteval
         value: 202106L
@@ -157,6 +160,7 @@ features:
       - Clang 13
       - Xcode 13.4.1
       - MSVC 14.50
+      - R++
 
   - desc: "Narrowing contextual conversions to `bool` (in `static_assert` and `constexpr if`)"
     paper: P1401
@@ -186,6 +190,7 @@ features:
       - Clang
       - MSVC 14.30
       - Xcode
+      - R++
 
   - desc: "Remove mixed wide string literal concatenation"
     paper: P2201
@@ -194,6 +199,8 @@ features:
       - Clang
       - MSVC 14.44
       - Xcode
+      - tool: R++
+        status: unsupported
 
   - desc: "`std::out_ptr()` and `std::inout_ptr()`"
     paper: P1132
@@ -401,6 +408,7 @@ features:
       - Clang 15
       - MSVC 14.43
       - Xcode 14.3
+      - R++
     ftm:
       - name: __cpp_constexpr
         value: 202110L
@@ -421,6 +429,7 @@ features:
       - MSVC 14.32
       - MSVC 14.43
       - Xcode 16.3
+      - R++ 2023.1
     ftm:
       - name: __cpp_explicit_this_parameter
         value: 202110L
@@ -432,6 +441,7 @@ features:
       - Clang
       - MSVC 14.30
       - Xcode
+      - R++
 
   - desc: "Add support for preprocessing directives `#elifdef` and `#elifndef`"
     paper: P2334
@@ -441,6 +451,7 @@ features:
       - Clang 13
       - MSVC 14.40
       - Xcode 13.4.1
+      - R++ 2024.2
 
   - desc: "Extend init-statement (of `for` loop) to allow alias-declaration"
     paper: P2360
@@ -451,6 +462,7 @@ features:
       - tool: MSVC 14.50
         note: "Compiles, but no IntelliSense support yet."
       - Xcode 14
+      - R++ 2023.1
 
   - desc: "Change scope of lambda trailing-return-type"
     paper: [P2036, P2579]
@@ -469,6 +481,7 @@ features:
       - Clang 15
       - MSVC 14.42
       - Xcode 14.3
+      - R++ 2024.2
     ftm:
       - name: __cpp_multidimensional_subscript
         value: 202110L
@@ -555,6 +568,7 @@ features:
       - Clang 15
       - MSVC 14.50
       - Xcode 14.3
+      - R++ 2023.1
     ftm:
       - name: __cpp_auto_cast
         value: 202110L
@@ -663,6 +677,7 @@ features:
       - Clang 13
       - MSVC 14.44
       - Xcode 13.4.1
+      - R++ 2024.3
 
   - desc: "`std::expected` (`<expected>`)"
     paper: [P0323, P2549]
@@ -845,6 +860,7 @@ features:
       - Clang
       - MSVC 14.50
       - Xcode 15
+      - R++
 
   - desc: "Remove non-encodable wide character literals and multicharacter wide character literals"
     paper: P2362
@@ -853,6 +869,7 @@ features:
       - Clang 14
       - Xcode 15
       - MSVC 14.51
+      - R++ 2023.3
 
   - desc: "Labels at the end of compound statements"
     paper: P2324
@@ -862,6 +879,7 @@ features:
       - Clang 16
       - Xcode 16
       - MSVC 14.51
+      - R++ 2023.1
 
   - desc: "Delimited escape sequences"
     paper: P2290
@@ -880,6 +898,7 @@ features:
       - Clang 19
       - MSVC 14.51
       - Xcode 16.3
+      - R++
     ftm:
       - name: __cpp_constexpr
         value: 202207L
@@ -917,6 +936,7 @@ features:
       - Clang 16
       - MSVC 14.44
       - Xcode 16
+      - R++ 2023.2
     ftm:
       - name: __cpp_static_call_operator
         value: 202207L
@@ -936,6 +956,7 @@ features:
       - GCC 14
       - Clang 20
       - MSVC 14.50
+      - R++
     keywords: ["constexpr"]
 
   - desc: "Requirements for optional extended floating-point types"
@@ -944,6 +965,7 @@ features:
       - GCC 13
       - tool: MSVC
         note: "Not applicable to MSVC."
+      - R++ 2026.1
 
   - desc: "Standard names and library support for extended floating-point types"
     paper: P1467
@@ -957,11 +979,17 @@ features:
       - Clang 19
       - MSVC 14.50
       - Xcode 16.4
+      - R++
 
   - desc: "Class template argument deduction from inherited constructors"
     paper: P2582
     summary: "Class template argument deduction works with inherited constructors."
-    support: [GCC 14, MSVC 14.51]
+    support:
+      - GCC 14
+      - MSVC 14.51
+      - tool: R++
+        status: unsupported
+        issue: RSCPP-37818
 
   - desc: "Attribute `[[assume]]`"
     paper: P1774
@@ -971,6 +999,7 @@ features:
       - Clang 19
       - Xcode 16.3
       - MSVC 14.51
+      - R++
 
   - desc: "Support for UTF-8 as a portable source file encoding"
     paper: P2295
@@ -988,6 +1017,7 @@ features:
       - Clang 16
       - MSVC 14.34
       - Xcode 16
+      - R++ 2023.2
     ftm:
       - name: __cpp_char8_t
         value: 202207L
@@ -999,6 +1029,7 @@ features:
       - Clang
       - MSVC 14.44
       - Xcode 15
+      - R++
 
   - desc: "`std::mdspan`: a non-owning multidimensional array reference (`<mdspan>`)"
     paper: [P0009, P2599, P2604, P2613, P2763]
@@ -1408,6 +1439,7 @@ features:
       - Clang 16
       - MSVC 14.44
       - Xcode 16
+      - R++ 2023.2
     ftm:
       - name: __cpp_multidimensional_subscript
         value: 202211L
@@ -1419,6 +1451,7 @@ features:
       - Clang 16
       - MSVC 14.51
       - Xcode 16
+      - R++ 2024.2
     ftm:
       - name: __cpp_constexpr
         value: 202211L
@@ -1431,6 +1464,7 @@ features:
       - Clang 17
       - Xcode 16
       - MSVC 14.52
+      - R++
     ftm:
       - name: __cpp_consteval
         value: 202211L
@@ -1441,6 +1475,7 @@ features:
       - GCC 15
       - Clang 17
       - MSVC 14.28
+      - R++
 
   - desc: "Extending the lifetime of temporaries in range-based `for` loop initializer"
     paper: [P2644, P2718]
@@ -1497,6 +1532,8 @@ features:
       - Clang 19
       - MSVC 14.50
       - Xcode 16.3
+      - tool: R++
+        status: unsupported
 
   - desc: "Stashing stashing iterators for proper flattening"
     paper: P2770
diff --git a/features_cpp26.yaml b/features_cpp26.yaml
index d2b4169..47a04e5 100644
--- a/features_cpp26.yaml
+++ b/features_cpp26.yaml
@@ -38,6 +38,7 @@ features:
       - GCC 14
       - Clang 17
       - Xcode 16.3
+      - R++
     ftm:
       - name: __cpp_constexpr
         value: 202306L
@@ -52,7 +53,7 @@ features:
 
   - desc: "Static storage for braced initializers"
     paper: P2752
-    support: [GCC 14]
+    support: [GCC 14, R++]
 
   - desc: "User-generated `static_assert` messages"
     paper: P2741
@@ -62,6 +63,9 @@ features:
       - GCC 14
       - Clang 17
       - Xcode 16.3
+      - tool: R++
+        status: unsupported
+        issue: RSCPP-35928
     ftm:
       - name: __cpp_static_assert
         value: 202306L
@@ -73,6 +77,7 @@ features:
       - GCC 14
       - Clang 18
       - Xcode 16.3
+      - R++ 2025.2
     ftm:
       - name: __cpp_placeholder_variables
         value: 202306L
@@ -376,6 +381,7 @@ features:
       - GCC 9
       - Clang 18
       - Xcode 16.3
+      - R++
 
   - desc: "[Pack indexing](https://cppreference.com/cpp/language/pack_indexing)"
     paper: P2662
@@ -385,6 +391,7 @@ features:
       - GCC 15
       - Clang 19
       - Xcode 16.3
+      - R++ 2025.3
     ftm:
       - name: __cpp_pack_indexing
         value: 202311L
@@ -395,6 +402,8 @@ features:
       - GCC 14
       - Clang 18
       - Xcode 16.3
+      - tool: R++
+        status: unsupported
 
   - desc: "Saturation arithmetic"
     paper: [P0543, P4052]
@@ -579,6 +588,8 @@ features:
       - GCC 14
       - Clang 19
       - Xcode 16.3
+      - tool: R++
+        status: unsupported
 
   - desc: "Clarifying rules for brace elision in [aggregate initialization](https://cppreference.com/cpp/language/aggregate_initialization)"
     paper: P3106
@@ -586,6 +597,7 @@ features:
       - GCC
       - Clang 17
       - Xcode 16.3
+      - R++
 
   - desc: "Attributes for [structured bindings](https://cppreference.com/cpp/language/structured_binding)"
     paper: P0609
@@ -593,6 +605,7 @@ features:
       - GCC 15
       - Clang 19
       - Xcode 16.3
+      - R++ 2025.2
     ftm:
       - name: __cpp_structured_bindings
         value: 202403L
@@ -607,6 +620,7 @@ features:
       - GCC 14
       - Clang 19
       - Xcode 16.3
+      - R++
     content: trivial-infinite-loops.md
     keywords: ["safety"]
 
@@ -623,6 +637,7 @@ features:
       - GCC 15
       - Clang 19
       - Xcode 16.3
+      - R++ 2025.2
     ftm:
       - name: __cpp_deleted_function
         value: 202403L
@@ -630,7 +645,7 @@ features:
   - desc: "Variadic friends"
     paper: P2893
     summary: "Class templates can now declare all types in a parameter pack as friends."
-    support: [GCC 15, Clang 20, Xcode 26.4]
+    support: [GCC 15, Clang 20, Xcode 26.4, R++ 2025.2]
     ftm:
       - name: __cpp_variadic_friend
         value: 202403L
@@ -770,10 +785,15 @@ features:
       - GCC 15
       - Clang 19
       - Xcode 16.3
+      - R++
 
   - desc: "Ordering of constraints involving fold expressions"
     paper: P2963
-    support: [Clang 19, Xcode 16.3]
+    support:
+      - Clang 19
+      - Xcode 16.3
+      - tool: R++
+        status: unsupported
     ftm:
       - name: __cpp_fold_expressions
         value: 202406L
@@ -788,6 +808,7 @@ features:
         note: "Supported as an extension, not fully conforming to standardized version."
       - Clang 21
       - Xcode 26.4
+      - R++
     ftm:
       - name: __cpp_structured_bindings
         value: 202406L
@@ -874,12 +895,13 @@ features:
       - tool: Clang 22
         status: partial
         note: "References to `constexpr` and decomposition of tuple-like types are not supported (only arrays and aggregates are)."
+      - R++
 
   - desc: "Allowing exception throwing in constant-evaluation (`constexpr` exceptions)"
     paper: P3068
     summary: "Exceptions can now be thrown and caught during constant evaluation."
     content: constexpr-exceptions.md
-    support: [GCC 16]
+    support: [GCC 16, R++ 2026.2]
     ftm:
       - name: __cpp_constexpr_exceptions
         value: 202411L
@@ -895,19 +917,26 @@ features:
       - GCC 15
       - Clang 20
       - Xcode 16
+      - tool: R++
+        status: unsupported
     keywords: ["safety"]
 
   - desc: "[Structured bindings](https://cppreference.com/cpp/language/structured_binding) can introduce a pack"
     paper: P1061
     summary: "Structured bindings can now capture remaining elements into a parameter pack."
-    support: [GCC 16, Clang 21, Xcode 26.4]
+    support: [GCC 16, Clang 21, Xcode 26.4, R++ 2025.3]
     ftm:
       - name: __cpp_structured_bindings
         value: 202411L
 
   - desc: "The Oxford variadic comma"
     paper: P3176
-    support: [GCC 15, Clang 20, Xcode 26.4]
+    support:
+      - GCC 15
+      - Clang 20
+      - Xcode 26.4
+      - tool: R++
+        status: unsupported
     summary: "Variadic ellipsis parameters (`...`) without a separating comma are deprecated, such as `int...`."
     content: oxford-variadic-comma.md
 
@@ -1015,6 +1044,8 @@ features:
 
   - desc: "Trivial unions (was `std::uninitialized<T>`)"
     paper: P3074
+    support:
+      - R++
     content: trivial-unions.md
     ftm:
       - name: __cpp_trivial_union
@@ -1029,13 +1060,13 @@ features:
 
   - desc: "Partial program correctness (`std::observable()`)"
     paper: P1494
-    support: [GCC 16]
+    support: [GCC 16, R++]
     keywords: ["safety"]
 
   - desc: "Contracts for C++ (`<contracts>`)"
     paper: P2900
     summary: "Contracts let you specify preconditions, postconditions, and assertions that document and enforce function requirements."
-    support: [GCC 16]
+    support: [GCC 16, R++ 2025.3]
     ftm:
       - name: __cpp_contracts
         value: 202502L
@@ -1052,6 +1083,8 @@ features:
 
   - desc: "Concept and variable-template template-parameters"
     paper: P2841
+    support:
+      - R++ 2025.3
     ftm:
       - name: __cpp_template_parameters
         value: 202502L
@@ -1066,6 +1099,7 @@ features:
         note: "Supported as an extension.<br> Use the flag `-Wno-c23-extensions` to suppress warnings related to `#embed`.<br> Although this is a C++26 feature, this is available in Clang starting with C++20 (`-std=c++20`).<br> Clang does not define the `__cpp_pp_embed` feature-testing macro yet.\n"
       - tool: Xcode 16.3
         note: "Supported as an extension.<br> Use the flag `-Wno-c23-extensions` to suppress warnings related to `#embed`.<br> Although this is a C++26 feature, this is available in Apple Clang starting with C++20 (`-std=c++20`).<br> Apple Clang does not define the `__cpp_pp_embed` feature-testing macro yet.\n"
+      - R++ 2026.1
     ftm:
       - name: __cpp_pp_embed
         value: 202502L
@@ -1287,6 +1321,8 @@ features:
     support:
       - tool: GCC 16
         note: "Requires `-freflection`"
+      - tool: R++ 2026.2
+        note: "The language part only. R++ implements no standard library."
     ftm:
       - name: __cpp_impl_reflection
         value: 202506L
@@ -1295,12 +1331,12 @@ features:
   - desc: "Annotations for Reflection"
     paper: P3394
     summary: "Attach compile-time values to declarations for reflection to read back."
-    support: [GCC 16]
+    support: [GCC 16, R++ 2026.2]
     content: reflection-annotations.md
 
   - desc: "Splicing a base class subobject"
     paper: P3293
-    support: [GCC 16]
+    support: [GCC 16, R++ 2026.2]
     keywords: ["reflection"]
 
   - desc: "`define_static_{string,object,array}`"
@@ -1316,7 +1352,7 @@ features:
     paper: P1306
     summary: "`template for` iterates over compile-time ranges like tuples and reflection results."
     content: expansion-statements.md
-    support: [GCC 16]
+    support: [GCC 16, R++ 2025.3]
     ftm:
       - name: __cpp_expansion_statements
         value: 202506L
@@ -1330,7 +1366,11 @@ features:
   - desc: "`constexpr` virtual inheritance"
     paper: P3533
     content: constexpr-virtual-inheritance.md
-    support: [GCC 16, Clang 24]
+    support:
+      - GCC 16
+      - Clang 24
+      - tool: R++
+        status: unsupported
     ftm:
       - name: __cpp_constexpr_virtual_inheritance
         value: 202506L
diff --git a/features_cpp29.yaml b/features_cpp29.yaml
index ee4c1ea..f36a34e 100644
--- a/features_cpp29.yaml
+++ b/features_cpp29.yaml
@@ -2,7 +2,10 @@
 features:
   - desc: "Designated-initializers for Base Classes"
     paper: P2287
-    support: [GCC 17]
+    support:
+      - GCC 17
+      - tool: R++
+        status: unsupported
     ftm:
       - name: __cpp_designated_initializers
         value: 202606L
@@ -13,10 +16,16 @@ features:
 
   - desc: "Defaulting Postfix Increment and Decrement Operations"
     paper: P3668
+    support:
+      - tool: R++
+        status: unsupported
 
   - desc: "Adding restrictions to defaulted assignment operator functions"
     paper: P2953
-    support: [GCC 17]
+    support:
+      - GCC 17
+      - tool: R++
+        status: unsupported
 
   - desc: "Nondeterministic pointer provenance"
     paper: P2434
@@ -26,7 +35,7 @@ features:
 
   - desc: "Adjust identifier following new Unicode recommendations"
     paper: P3658
-    support: [GCC 17, Clang 24]
+    support: [GCC 17, Clang 24, R++]
 
   - desc: "return_value & return_void Are Not Mutually Exclusive"
     paper: P3950
@@ -51,7 +60,10 @@ features:
 
   - desc: "Conditional noexcept specifiers in compound requirements"
     paper: P3822
-    support: [GCC 17]
+    support:
+      - GCC 17
+      - tool: R++
+        status: unsupported
     ftm:
       - name: __cpp_concepts
         value: 202606L
diff --git a/frontend_rscpp.yaml b/frontend_rscpp.yaml
new file mode 100644
index 0000000..80515d0
--- /dev/null
+++ b/frontend_rscpp.yaml
@@ -0,0 +1,91 @@
+---
+frontend:
+  id: rscpp
+  name: R++
+  full_name: ReSharper C++
+  vendor: JetBrains
+  description: >-
+    R++ is the JetBrains C and C++ language engine. It powers the code analysis and
+    the language support in CLion, Rider, and ReSharper C++ for Visual Studio.
+  kind: frontend
+  standard_library: false
+  products:
+    - CLion
+    - Rider
+    - ReSharper C++ for Visual Studio
+  refs:
+    - title: ReSharper C++
+      url: "https://www.jetbrains.com/resharper-cpp/"
+    - title: CLion
+      url: "https://www.jetbrains.com/clion/"
+issue_tracker:
+  name: JetBrains YouTrack
+  url_template: "https://youtrack.jetbrains.com/issue/{id}"
+releases:
+  - version: "2026.2"
+    released: July 22, 2026
+    refs:
+      - title: Release notes
+        url: "https://blog.jetbrains.com/rscpp/2026/07/22/resharper-cpp-2026-2-cpp-26-reflection-ispc-language-support-and-more/"
+  - version: "2026.1"
+    released: March 30, 2026
+    refs:
+      - title: Release notes
+        url: "https://blog.jetbrains.com/rscpp/2026/03/30/resharper-cpp-2026-1-released/"
+  - version: "2025.3"
+    released: November 11, 2025
+    refs:
+      - title: Release notes
+        url: "https://blog.jetbrains.com/rscpp/2025/11/11/resharper-cpp-2025-3/"
+  - version: "2025.2"
+    released: August 14, 2025
+    refs: []
+  - version: "2025.1"
+    released: April 16, 2025
+    refs: []
+  - version: "2024.3"
+    released: November 13, 2024
+    refs: []
+  - version: "2024.2"
+    released: August 15, 2024
+    refs: []
+  - version: "2024.1"
+    released: April 9, 2024
+    refs:
+      - title: Release notes
+        url: "https://blog.jetbrains.com/rscpp/2024/04/09/resharper-cpp-2024-1/"
+  - version: "2023.3"
+    released: December 6, 2023
+    refs:
+      - title: Release notes
+        url: "https://blog.jetbrains.com/rscpp/2023/12/07/resharper-cpp-2023-3/"
+  - version: "2023.2"
+    released: August 2, 2023
+    refs:
+      - title: Release notes
+        url: "https://blog.jetbrains.com/rscpp/2023/08/02/resharper-cpp-2023-2/"
+  - version: "2023.1"
+    released: April 5, 2023
+    refs:
+      - title: Release notes
+        url: "https://blog.jetbrains.com/rscpp/2023/04/05/resharper-cpp-2023-1/"
+  - version: "2022.3"
+    released: December 7, 2022
+    refs:
+      - title: Release notes
+        url: "https://blog.jetbrains.com/rscpp/2022/12/07/resharper-cpp-2022-3/"
+  - version: "2022.2"
+    released: August 2, 2022
+    refs:
+      - title: Release notes
+        url: "https://blog.jetbrains.com/rscpp/2022/08/02/resharper-cpp-2022-2/"
+  - version: "2022.1"
+    released: April 19, 2022
+    refs:
+      - title: Release notes
+        url: "https://blog.jetbrains.com/rscpp/2022/04/19/resharper-cpp-2022-1/"
+  - version: "2021.3"
+    released: December 8, 2021
+    refs:
+      - title: Release notes
+        url: "https://blog.jetbrains.com/rscpp/2021/12/08/resharper-cpp-2021-3/"