formula: convert license array to hash

Library/Homebrew/formula.rb

@@ -2232,7 +2232,14 @@ class Formula
     # <pre>license all_of: ["MIT", "GPL-2.0-only"]</pre>
     # <pre>license "GPL-2.0-only" => { with: "LLVM-exception" }</pre>
     # <pre>license :public_domain</pre>
-    attr_rw :license
+    def license(args = nil)
+      if args.nil?
+        @licenses
+      else
+        args = { any_of: args } if args.is_a? Array
+        @licenses = args
+      end
+    end
 
     # @!attribute [w] homepage
     # The homepage for the software. Used by users to get more information

Library/Homebrew/test/utils/spdx_spec.rb

@@ -167,10 +167,6 @@ describe SPDX do
       expect(described_class.license_expression_to_string(any_of: ["MIT", "EPL-1.0+"])).to eq "MIT or EPL-1.0+"
     end
 
-    it "treats array as any_of:" do
-      expect(described_class.license_expression_to_string(["MIT", "EPL-1.0+"])).to eq "MIT or EPL-1.0+"
-    end
-
     it "returns license and exception" do
       license_expression = { "MIT" => { with: "LLVM-exception" } }
       expect(described_class.license_expression_to_string(license_expression)).to eq "MIT with LLVM-exception"
@@ -237,7 +233,6 @@ describe SPDX do
       }
     }
     let(:any_of_license) { { any_of: ["MIT", "0BSD"] } }
-    let(:license_array) { ["MIT", "0BSD"] }
     let(:all_of_license) { { all_of: ["MIT", "0BSD"] } }
     let(:nested_licenses) {
       {
@@ -278,14 +273,6 @@ describe SPDX do
       expect(described_class.licenses_forbid_installation?(any_of_license, multiple_forbidden)).to eq true
     end
 
-    it "allows installation when one of the array licenses is allowed" do
-      expect(described_class.licenses_forbid_installation?(license_array, mit_forbidden)).to eq false
-    end
-
-    it "forbids installation when none of the array licenses are allowed" do
-      expect(described_class.licenses_forbid_installation?(license_array, multiple_forbidden)).to eq true
-    end
-
     it "forbids installation when one of the all_of licenses is allowed" do
       expect(described_class.licenses_forbid_installation?(all_of_license, mit_forbidden)).to eq true
     end

Library/Homebrew/utils/spdx.rb

@@ -83,8 +83,7 @@ module SPDX
       license_expression
     when :public_domain
       "Public Domain"
-    when Hash, Array
+    when Hash
-      license_expression = { any_of: license_expression } if license_expression.is_a? Array
       expressions = []
 
       if license_expression.keys.length == 1
@@ -135,8 +134,7 @@ module SPDX
     case license_expression
     when String, Symbol
       forbidden_licenses_include? license_expression.to_s, forbidden_licenses
-    when Hash, Array
+    when Hash
-      license_expression = { any_of: license_expression } if license_expression.is_a? Array
       key = license_expression.keys.first
       case key
       when :any_of