X-Git-Url: https://jxself.org/git/?p=8sync.git;a=blobdiff_plain;f=eightsync%2Fagenda.scm;h=edade135c09499e7b08beaf86c573c01d5fb3e1e;hp=68db42eceee7bdb981612f594eacc0b4792c3568;hb=fbb1776a35db50db19fc158381e74361d6e9b789;hpb=a9e932ba04d488a5492afe0dd6d88337f4b01686

diff --git a/eightsync/agenda.scm b/eightsync/agenda.scm
index 68db42e..edade13 100644
--- a/eightsync/agenda.scm
+++ b/eightsync/agenda.scm
@@ -65,6 +65,8 @@
 
             %port-request %run %run-at %run-delay
             
+            catch-8sync catch-%8sync
+
             print-error-and-continue
 
             %current-agenda
@@ -543,6 +545,22 @@ return the wrong thing via (%8sync) and trip themselves up."
        (lambda ()
          body ...)))))
 
+(define-syntax-rule (catch-8sync exp (handler-key handler) ...)
+  (catch '%8sync-caught-error
+    (lambda ()
+      exp)
+    (lambda (_ orig-key orig-args orig-stacks)
+      (cond
+       ((or (eq? handler-key #t)
+            (eq? orig-key handler-key))
+        (apply handler orig-stacks orig-args)) ...
+       (else (raise '%8sync-caught-error
+                    orig-key orig-args orig-stacks))))))
+
+;; Alias...?
+(define-syntax-rule (catch-%8sync rest ...)
+  (catch-8sync rest ...))
+
 
 
 ;;; Execution of agenda, and current agenda