rubocops/text: Enforce bin/"formula" instead of "#{bin}/formula"

Library/Homebrew/rubocops/text.rb

@@ -137,6 +137,11 @@ module RuboCop
             problem "Use `\#{pkgshare}` instead of `\#{share}/#{@formula_name}`"
           end
 
+          interpolated_bin_path_starts_with(body_node, "/#{@formula_name}") do |bin_node|
+            offending_node(bin_node)
+            problem "Use `bin/\"#{@formula_name}\"` instead of `\"\#{bin}/#{@formula_name}\"`"
+          end
+
           return if formula_tap != "homebrew-core"
 
           find_method_with_args(body_node, :env, :std) do
@@ -154,6 +159,11 @@ module RuboCop
           $(dstr (begin (send nil? :share)) (str #path_starts_with?(%1)))
         EOS
 
+        # Find "#{bin}/foo"
+        def_node_search :interpolated_bin_path_starts_with, <<~EOS
+          $(dstr (begin (send nil? :bin)) (str #path_starts_with?(%1)))
+        EOS
+
         # Find share/"foo"
         def_node_search :share_path_starts_with, <<~EOS
           $(send (send nil? :share) :/ (str #path_starts_with?(%1)))

Library/Homebrew/sorbet/rbi/dsl/rubo_cop/cop/formula_audit_strict/text.rbi

@@ -6,6 +6,16 @@
 
 
 class RuboCop::Cop::FormulaAuditStrict::Text
+  sig do
+    params(
+      node: RuboCop::AST::Node,
+      pattern: T.any(String, Symbol),
+      kwargs: T.untyped,
+      block: T.untyped
+    ).returns(T.untyped)
+  end
+  def interpolated_bin_path_starts_with(node, *pattern, **kwargs, &block); end
+
   sig do
     params(
       node: RuboCop::AST::Node,

Library/Homebrew/test/rubocops/text/strict_spec.rb

@@ -131,5 +131,16 @@ RSpec.describe RuboCop::Cop::FormulaAuditStrict::Text do
         end
       RUBY
     end
+
+    it 'reports an offense if "\#{bin}/<formula name>" is present' do
+      expect_offense(<<~RUBY, "/homebrew-core/Formula/foo.rb")
+        class Foo < Formula
+          test do
+            ohai "\#{bin}/foo", "-v"
+                 ^^^^^^^^^^^^ FormulaAuditStrict/Text: Use `bin/"foo"` instead of `"\#{bin}/foo"`
+          end
+        end
+      RUBY
+    end
   end
 end