diff --git a/Library/Homebrew/test/dev-cmd/bottle_spec.rb b/Library/Homebrew/test/dev-cmd/bottle_spec.rb
index b8a6835a60..01f8e53d26 100644
--- a/Library/Homebrew/test/dev-cmd/bottle_spec.rb
+++ b/Library/Homebrew/test/dev-cmd/bottle_spec.rb
@@ -511,11 +511,11 @@ describe "brew bottle" do
         bottle.sha256(catalina: "109c0cb581a7b5d84da36d84b221fb9dd0f8a927b3044d82611791c9907e202e")
 
         expect(homebrew.bottle_output(bottle, nil)).to eq(
-          <<~RUBY.indent(2),
-            bottle do
-              root_url "https://example.com"
-              sha256 catalina: "109c0cb581a7b5d84da36d84b221fb9dd0f8a927b3044d82611791c9907e202e"
-            end
+          <<-RUBY,
+  bottle do
+    root_url "https://example.com"
+    sha256 catalina: "109c0cb581a7b5d84da36d84b221fb9dd0f8a927b3044d82611791c9907e202e"
+  end
           RUBY
         )
       end
@@ -526,12 +526,12 @@ describe "brew bottle" do
         bottle.sha256(catalina: "109c0cb581a7b5d84da36d84b221fb9dd0f8a927b3044d82611791c9907e202e")
 
         expect(homebrew.bottle_output(bottle, "ExampleStrategy")).to eq(
-          <<~RUBY.indent(2),
-            bottle do
-              root_url "https://example.com",
-                using: ExampleStrategy
-              sha256 catalina: "109c0cb581a7b5d84da36d84b221fb9dd0f8a927b3044d82611791c9907e202e"
-            end
+          <<-RUBY,
+  bottle do
+    root_url "https://example.com",
+      using: ExampleStrategy
+    sha256 catalina: "109c0cb581a7b5d84da36d84b221fb9dd0f8a927b3044d82611791c9907e202e"
+  end
           RUBY
         )
       end
diff --git a/Library/Homebrew/test/support/helper/spec/shared_context/integration_test.rb b/Library/Homebrew/test/support/helper/spec/shared_context/integration_test.rb
index 1d24822506..9bbb0d1cba 100644
--- a/Library/Homebrew/test/support/helper/spec/shared_context/integration_test.rb
+++ b/Library/Homebrew/test/support/helper/spec/shared_context/integration_test.rb
@@ -177,7 +177,7 @@ RSpec.shared_context "integration test" do # rubocop:disable RSpec/ContextWordin
     Formulary.core_path(name).tap do |formula_path|
       formula_path.write <<~RUBY
         class #{Formulary.class_s(name)} < Formula
-        #{content.indent(2)}
+        #{content.gsub(/^(?!$)/, "  ")}
         end
       RUBY
     end
diff --git a/Library/Homebrew/test/utils/ast/ast_spec.rb b/Library/Homebrew/test/utils/ast/ast_spec.rb
index 6eaf5f94f7..38fb349b69 100644
--- a/Library/Homebrew/test/utils/ast/ast_spec.rb
+++ b/Library/Homebrew/test/utils/ast/ast_spec.rb
@@ -5,12 +5,12 @@ require "utils/ast"
 describe Utils::AST do
   describe ".stanza_text" do
     let(:compound_license) do
-      <<~RUBY.chomp
-        license all_of: [
-          :public_domain,
-          "MIT",
-          "GPL-3.0-or-later" => { with: "Autoconf-exception-3.0" },
-        ]
+      <<-RUBY
+  license all_of: [
+    :public_domain,
+    "MIT",
+    "GPL-3.0-or-later" => { with: "Autoconf-exception-3.0" },
+  ]
       RUBY
     end
 
@@ -36,14 +36,14 @@ describe Utils::AST do
     it "adds indent to stanza text if specified" do
       expect(described_class.stanza_text(:revision, "revision 1", indent: 2)).to eq("  revision 1")
       expect(described_class.stanza_text(:license, 'license "MIT"', indent: 2)).to eq('  license "MIT"')
-      expect(described_class.stanza_text(:license, compound_license, indent: 2)).to eq(compound_license.indent(2))
+      expect(described_class.stanza_text(:license, compound_license, indent: 2)).to eq(compound_license)
     end
 
     it "does not add indent if already indented" do
       expect(described_class.stanza_text(:revision, "  revision 1", indent: 2)).to eq("  revision 1")
       expect(
-        described_class.stanza_text(:license, compound_license.indent(2), indent: 2),
-      ).to eq(compound_license.indent(2))
+        described_class.stanza_text(:license, compound_license, indent: 2),
+      ).to eq(compound_license)
     end
   end
 end
diff --git a/Library/Homebrew/test/utils/ast/formula_ast_spec.rb b/Library/Homebrew/test/utils/ast/formula_ast_spec.rb
index 386729b2c5..643b874f60 100644
--- a/Library/Homebrew/test/utils/ast/formula_ast_spec.rb
+++ b/Library/Homebrew/test/utils/ast/formula_ast_spec.rb
@@ -248,10 +248,10 @@ describe Utils::AST::FormulaAST do
 
   describe "#add_bottle_block" do
     let(:bottle_output) do
-      <<~RUBY.chomp.indent(2)
-        bottle do
-          sha256 "f7b1fc772c79c20fddf621ccc791090bc1085fcef4da6cca03399424c66e06ca" => :sierra
-        end
+      <<-RUBY
+  bottle do
+    sha256 "f7b1fc772c79c20fddf621ccc791090bc1085fcef4da6cca03399424c66e06ca" => :sierra
+  end
       RUBY
     end
 
diff --git a/Library/Homebrew/utils/ast.rb b/Library/Homebrew/utils/ast.rb
index 116853d0f7..77ad0687b6 100644
--- a/Library/Homebrew/utils/ast.rb
+++ b/Library/Homebrew/utils/ast.rb
@@ -35,7 +35,7 @@ module Utils
         value if (node.is_a?(SendNode) || node.is_a?(BlockNode)) && node.method_name == name
       end
       text ||= "#{name} #{value.inspect}"
-      text = text.indent(indent) if indent && !text.match?(/\A\n* +/)
+      text = text.gsub(/^(?!$)/, " " * indent) if indent && !text.match?(/\A\n* +/)
       text
     end