T.P.Error: Improve reporting of unsupported extensions errors.

Amend the error message with instructions on how to list all supported extensions. Closes: #9247
jgm · Apr 30, 2024 · 509cc3a · 509cc3a
1 parent c18fd22
commit 509cc3a
Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/src/Text/Pandoc/Error.hs b/src/Text/Pandoc/Error.hs
@@ -136,7 +136,8 @@ renderError e =
          _     -> ""
     PandocUnsupportedExtensionError ext f ->
       "The extension " <> ext <> " is not supported " <>
-      "for " <> f
+      "for " <> f <> ".\nUse --list-extensions=" <> f <> " to " <>
+      "list supported extensions."
     PandocCiteprocError e' ->
       prettyCiteprocError e'
     PandocBibliographyError fp msg ->