PLT: Ignoring errors during argument name scanning for autodoc.

1 files changed, 23 insertions, 22 deletions

diff --git a/scheme/plt/geiser/autodoc.ss b/scheme/plt/geiser/autodoc.ss
index 7fbdb0c..1bec9fd 100644
--- a/scheme/plt/geiser/autodoc.ss
+++ b/scheme/plt/geiser/autodoc.ss
@@ -74,28 +74,29 @@
     result))
 
 (define (parse-datum! datum store)
-  (match datum
-    ((list 'module name lang forms ...)
-     (for-each (lambda (f) (parse-datum! f store)) forms))
-    ((list 'define (list (list name formals ...) other ...) body ...)
-     (add-signature! name formals store))
-    ((list 'define (list name formals ...) body ...)
-     (add-signature! name formals store))
-    ((list 'define name (list 'lambda formals body ...))
-     (add-signature! name formals store))
-    ((list 'define name (list 'case-lambda clauses ...))
-     (for-each (lambda (c) (add-signature! name (car c) store)) (reverse clauses)))
-    ((list 'define-for-syntax (list name formals ...) body ...)
-     (add-signature! name formals store))
-    ((list 'define-for-syntax name (list 'lambda formals body ...))
-     (add-signature! name formals store))
-    ((list 'define-syntax-rule (list name formals ...) body ...)
-     (add-signature! name formals store))
-    ((list 'define-syntax name (list 'syntax-rules specials clauses ...))
-     (for-each (lambda (c)
-                 (add-signature! name (cdar c) store))
-               (reverse clauses)))
-    (_ void)))
+  (with-handlers ((exn? (lambda (_) void)))
+    (match datum
+      ((list 'module name lang forms ...)
+       (for-each (lambda (f) (parse-datum! f store)) forms))
+      ((list 'define (list (list name formals ...) other ...) body ...)
+       (add-signature! name formals store))
+      ((list 'define (list name formals ...) body ...)
+       (add-signature! name formals store))
+      ((list 'define name (list 'lambda formals body ...))
+       (add-signature! name formals store))
+      ((list 'define name (list 'case-lambda clauses ...))
+       (for-each (lambda (c) (add-signature! name (car c) store)) (reverse clauses)))
+      ((list 'define-for-syntax (list name formals ...) body ...)
+       (add-signature! name formals store))
+      ((list 'define-for-syntax name (list 'lambda formals body ...))
+       (add-signature! name formals store))
+      ((list 'define-syntax-rule (list name formals ...) body ...)
+       (add-signature! name formals store))
+      ((list 'define-syntax name (list 'syntax-rules specials clauses ...))
+       (for-each (lambda (c)
+                   (add-signature! name (cdar c) store))
+                 (reverse clauses)))
+      (_ void))))
 
 (define (add-signature! name formals store)
   (when (symbol? name)