fix(svg): enable SVG by default via librsvg

build-emacs-for-macos

@@ -314,7 +314,7 @@ class Build
         configure_flags << '--with-xwidgets'
       end
       configure_flags << native_comp_configure_flag if options[:native_comp]
-      configure_flags << '--without-rsvg' unless options[:rsvg]
+      configure_flags << '--without-rsvg' if options[:rsvg] == false
 
       run_cmd './configure', *configure_flags
 
@@ -819,7 +819,7 @@ if __FILE__ == $PROGRAM_NAME
     work_dir: File.expand_path(__dir__),
     native_full_aot: false,
     parallel: Etc.nprocessors,
-    rsvg: false,
+    rsvg: true,
     xwidgets: true
   }
 
@@ -863,9 +863,10 @@ if __FILE__ == $PROGRAM_NAME
         cli_options[:native_full_aot] = v
       end
 
-      opts.on('--rsvg', 'Enable SVG image support via librsvg, ' \
-                        'can yield a unstable build (default: disabled)') do
-        cli_options[:rsvg] = true
+      opts.on('--[no-]rsvg',
+              'Enable/disable SVG image support via librsvg ' \
+              '(default: enabled)') do |v|
+        cli_options[:rsvg] = v
       end
 
       opts.on('--no-titlebar', 'Apply no-titlebar patch (default: disabled)') do