diff --git a/regression-tests/pure2-bugfix-for-unbraced-function-expression.cpp2 b/regression-tests/pure2-bugfix-for-unbraced-function-expression.cpp2
index e3789105b..6fb1d13a1 100644
--- a/regression-tests/pure2-bugfix-for-unbraced-function-expression.cpp2
+++ b/regression-tests/pure2-bugfix-for-unbraced-function-expression.cpp2
@@ -1,12 +1,12 @@
 t: type = {
-  operator[]: (this, f) = { }
+  operator[]: (this, _) = { }
 }
 
 main: () -> int = {
   (x := t()) { x[:() -> _ = 0]; }
   (x := t()) { x[:() -> _ = 0;]; }
 
-  assert(!(:() = 0; is int));
+  assert(!(:() 0; is int));
 
   return :i32 = 0;
 }
diff --git a/regression-tests/test-results/clang-12/pure2-bugfix-for-unbraced-function-expression.cpp.execution b/regression-tests/test-results/clang-12/pure2-bugfix-for-unbraced-function-expression.cpp.execution
new file mode 100644
index 000000000..e69de29bb
diff --git a/regression-tests/test-results/clang-12/pure2-bugfix-for-unbraced-function-expression.cpp.output b/regression-tests/test-results/clang-12/pure2-bugfix-for-unbraced-function-expression.cpp.output
new file mode 100644
index 000000000..04047528c
--- /dev/null
+++ b/regression-tests/test-results/clang-12/pure2-bugfix-for-unbraced-function-expression.cpp.output
@@ -0,0 +1,7 @@
+pure2-bugfix-for-unbraced-function-expression.cpp2:2:34: warning: unused parameter 'f' [-Wunused-parameter]
+  auto t::operator[](auto const& f) const& -> void{}
+                                 ^
+pure2-bugfix-for-unbraced-function-expression.cpp2:9:65: warning: expression result unused [-Wunused-value]
+  cpp2::Default.expects(!((cpp2::is<int>([]() mutable -> void { 0;  }))), "");
+                                                                ^
+2 warnings generated.
diff --git a/regression-tests/test-results/clang-12/pure2-for-loop-range-with-lambda.cpp.execution b/regression-tests/test-results/clang-12/pure2-for-loop-range-with-lambda.cpp.execution
new file mode 100644
index 000000000..19b3a90b2
--- /dev/null
+++ b/regression-tests/test-results/clang-12/pure2-for-loop-range-with-lambda.cpp.execution
@@ -0,0 +1 @@
+12345123451234512345
\ No newline at end of file
diff --git a/regression-tests/test-results/clang-12/pure2-for-loop-range-with-lambda.cpp.output b/regression-tests/test-results/clang-12/pure2-for-loop-range-with-lambda.cpp.output
new file mode 100644
index 000000000..e69de29bb
diff --git a/regression-tests/test-results/gcc-10/pure2-bugfix-for-unbraced-function-expression.cpp.execution b/regression-tests/test-results/gcc-10/pure2-bugfix-for-unbraced-function-expression.cpp.execution
new file mode 100644
index 000000000..e69de29bb
diff --git a/regression-tests/test-results/gcc-10/pure2-bugfix-for-unbraced-function-expression.cpp.output b/regression-tests/test-results/gcc-10/pure2-bugfix-for-unbraced-function-expression.cpp.output
new file mode 100644
index 000000000..d76ed67cc
--- /dev/null
+++ b/regression-tests/test-results/gcc-10/pure2-bugfix-for-unbraced-function-expression.cpp.output
@@ -0,0 +1,6 @@
+pure2-bugfix-for-unbraced-function-expression.cpp2: In instantiation of ‘void t::operator[](const auto:90&) const & [with auto:89 = main()::<lambda()>]’:
+pure2-bugfix-for-unbraced-function-expression.cpp2:6:4:   required from here
+pure2-bugfix-for-unbraced-function-expression.cpp2:2:34: warning: unused parameter ‘f’ [-Wunused-parameter]
+pure2-bugfix-for-unbraced-function-expression.cpp2: In instantiation of ‘void t::operator[](const auto:90&) const & [with auto:89 = main()::<lambda()>]’:
+pure2-bugfix-for-unbraced-function-expression.cpp2:7:4:   required from here
+pure2-bugfix-for-unbraced-function-expression.cpp2:2:34: warning: unused parameter ‘f’ [-Wunused-parameter]
diff --git a/regression-tests/test-results/gcc-10/pure2-for-loop-range-with-lambda.cpp.execution b/regression-tests/test-results/gcc-10/pure2-for-loop-range-with-lambda.cpp.execution
new file mode 100644
index 000000000..19b3a90b2
--- /dev/null
+++ b/regression-tests/test-results/gcc-10/pure2-for-loop-range-with-lambda.cpp.execution
@@ -0,0 +1 @@
+12345123451234512345
\ No newline at end of file
diff --git a/regression-tests/test-results/gcc-10/pure2-for-loop-range-with-lambda.cpp.output b/regression-tests/test-results/gcc-10/pure2-for-loop-range-with-lambda.cpp.output
new file mode 100644
index 000000000..e69de29bb
diff --git a/regression-tests/test-results/gcc-13/pure2-bugfix-for-unbraced-function-expression.cpp.output b/regression-tests/test-results/gcc-13/pure2-bugfix-for-unbraced-function-expression.cpp.output
index e69de29bb..46a499999 100644
--- a/regression-tests/test-results/gcc-13/pure2-bugfix-for-unbraced-function-expression.cpp.output
+++ b/regression-tests/test-results/gcc-13/pure2-bugfix-for-unbraced-function-expression.cpp.output
@@ -0,0 +1,6 @@
+pure2-bugfix-for-unbraced-function-expression.cpp2: In instantiation of ‘void t::operator[](const auto:100&) const & [with auto:99 = main()::<lambda()>]’:
+pure2-bugfix-for-unbraced-function-expression.cpp2:6:4:   required from here
+pure2-bugfix-for-unbraced-function-expression.cpp2:2:34: warning: unused parameter ‘f’ [-Wunused-parameter]
+pure2-bugfix-for-unbraced-function-expression.cpp2: In instantiation of ‘void t::operator[](const auto:100&) const & [with auto:99 = main()::<lambda()>]’:
+pure2-bugfix-for-unbraced-function-expression.cpp2:7:4:   required from here
+pure2-bugfix-for-unbraced-function-expression.cpp2:2:34: warning: unused parameter ‘f’ [-Wunused-parameter]
diff --git a/regression-tests/test-results/gcc-13/pure2-for-loop-range-with-lambda.cpp.execution b/regression-tests/test-results/gcc-13/pure2-for-loop-range-with-lambda.cpp.execution
new file mode 100644
index 000000000..19b3a90b2
--- /dev/null
+++ b/regression-tests/test-results/gcc-13/pure2-for-loop-range-with-lambda.cpp.execution
@@ -0,0 +1 @@
+12345123451234512345
\ No newline at end of file
diff --git a/regression-tests/test-results/gcc-13/pure2-for-loop-range-with-lambda.cpp.output b/regression-tests/test-results/gcc-13/pure2-for-loop-range-with-lambda.cpp.output
new file mode 100644
index 000000000..e69de29bb
diff --git a/regression-tests/test-results/msvc-2022/pure2-bugfix-for-unbraced-function-expression.cpp.execution b/regression-tests/test-results/msvc-2022/pure2-bugfix-for-unbraced-function-expression.cpp.execution
new file mode 100644
index 000000000..e69de29bb
diff --git a/regression-tests/test-results/msvc-2022/pure2-bugfix-for-unbraced-function-expression.cpp.output b/regression-tests/test-results/msvc-2022/pure2-bugfix-for-unbraced-function-expression.cpp.output
new file mode 100644
index 000000000..57e058827
--- /dev/null
+++ b/regression-tests/test-results/msvc-2022/pure2-bugfix-for-unbraced-function-expression.cpp.output
@@ -0,0 +1 @@
+pure2-bugfix-for-unbraced-function-expression.cpp
diff --git a/regression-tests/test-results/msvc-2022/pure2-for-loop-range-with-lambda.cpp.execution b/regression-tests/test-results/msvc-2022/pure2-for-loop-range-with-lambda.cpp.execution
new file mode 100644
index 000000000..19b3a90b2
--- /dev/null
+++ b/regression-tests/test-results/msvc-2022/pure2-for-loop-range-with-lambda.cpp.execution
@@ -0,0 +1 @@
+12345123451234512345
\ No newline at end of file
diff --git a/regression-tests/test-results/msvc-2022/pure2-for-loop-range-with-lambda.cpp.output b/regression-tests/test-results/msvc-2022/pure2-for-loop-range-with-lambda.cpp.output
new file mode 100644
index 000000000..d6f0513de
--- /dev/null
+++ b/regression-tests/test-results/msvc-2022/pure2-for-loop-range-with-lambda.cpp.output
@@ -0,0 +1 @@
+pure2-for-loop-range-with-lambda.cpp
diff --git a/regression-tests/test-results/version b/regression-tests/test-results/version
index 1517b23cc..21015bed3 100644
--- a/regression-tests/test-results/version
+++ b/regression-tests/test-results/version
@@ -1,5 +1,5 @@
 
-cppfront compiler v0.3.0   Build 8C14:0739
+cppfront compiler v0.3.0   Build 8C16:2054
 Copyright(c) Herb Sutter   All rights reserved
 
 SPDX-License-Identifier: CC-BY-NC-ND-4.0
diff --git a/source/build.info b/source/build.info
index 6d4ce26b0..824799a30 100644
--- a/source/build.info
+++ b/source/build.info
@@ -1 +1 @@
-"8C14:0739"
\ No newline at end of file
+"8C16:2054"
\ No newline at end of file
diff --git a/source/to_cpp1.h b/source/to_cpp1.h
index ed32bc584..9d733b9c3 100644
--- a/source/to_cpp1.h
+++ b/source/to_cpp1.h
@@ -4533,7 +4533,7 @@ class cppfront
 
         //  "Axiom"s are for static analysis only, and are never evaluated, so just skip them
         //  (The only requirement for an Axiom condition is that it parses; and even that's
-        //  easy to relax if we feel like allowing arbitrary tokens in an Axiom condition)
+        //  easy to relax if we ever want to allow arbitrary tokens in an Axiom condition)
         if (n.group && n.group->to_string() == "Axiom") {
             return;
         }