[command] Print environment info for easier debugging

Author: viteinfinite

lib/slather/coverage_service/cobertura_xml_output.rb

@@ -27,7 +27,7 @@ def store_report(report)
         File.write(output_file, report.to_s)
       end
 
-      def grouped_coverage_files
+      def grouped_coverage_files(coverage_files)
         groups = Hash.new
         coverage_files.each do |coverage_file|
           next if coverage_file == nil
@@ -55,7 +55,7 @@ def create_xml_report(coverage_files)
         packages_node = @doc.at_css "packages"
 
         # group files by path
-        grouped_coverage_files.each do |path , package_coverage_files|
+          grouped_coverage_files(coverage_files).each do |path , package_coverage_files|
           package_node = Nokogiri::XML::Node.new "package", @doc
           package_node.parent = packages_node
           classes_node = Nokogiri::XML::Node.new "classes", @doc

lib/slather/project.rb

@@ -165,8 +165,8 @@ def profdata_llvm_cov_output
         raise StandardError, "No binary file found. Please help slather by adding the \"scheme\" argument"
       end
 
-      puts "Processing coverage file: #{profdata_file_arg}"
-      puts "Against binary file: #{binary_file_arg}"
+      puts "\nProcessing coverage file: #{profdata_file_arg}"
+      puts "Against binary file: #{binary_file_arg}\n\n"
 
       llvm_cov_args = %W(show -instr-profile #{profdata_file_arg} #{binary_file_arg})
       `xcrun llvm-cov #{llvm_cov_args.shelljoin}`