[GR-18163] Use a more portable way to check if code is parseable in t…

…he `rdoc` default gem PullRequest: truffleruby/3917
Shopify · Jul 26, 2023 · 099ae3f · 099ae3f
2 parents 069a9ef + d87bfbd
commit 099ae3f
Showing 1 changed file with 4 additions and 1 deletion.
diff --git a/lib/mri/rdoc/markup/to_html.rb b/lib/mri/rdoc/markup/to_html.rb
@@ -426,7 +426,10 @@ def list_end_for(list_type)
 
   def parseable? text
     verbose, $VERBOSE = $VERBOSE, nil
-    eval("BEGIN {return true}\n#{text}")
+    catch(:valid) do
+      eval("BEGIN { throw :valid, true }\n#{text}")
+      false
+    end
   rescue SyntaxError
     false
   ensure