From: Mark Wooding <mdw@distorted.org.uk>
Date: Tue, 11 Apr 2006 17:05:37 +0000 (+0100)
Subject: safely: For -without-moaning functions, just do it and catch errors.
X-Git-Url: https://git.distorted.org.uk/~mdw/lisp/commitdiff_plain/2d8bac2c972c9fc294f48df7b6afc34fab744608?hp=ad8995ca2397db9b5d9e1d3357d5e1a6730fdfe4

safely: For -without-moaning functions, just do it and catch errors.

... rather than probing first and hoping for the best.
---

diff --git a/safely.lisp b/safely.lisp
index f62420c..c78492a 100644
--- a/safely.lisp
+++ b/safely.lisp
@@ -67,14 +67,16 @@ Other OPEN-ARGS are passed to open."
 
 (defun delete-file-without-moaning (file)
   "Delete the FILE, ignoring errors."
-  (when (probe-file file)
-    (sys-unlink file)))
+  (with-errno-handlers ()
+      (sys-unlink file)
+    (ENOENT nil)))
 
 (defun rename-file-without-moaning (old new)
   "Rename OLD to NEW, ignoring errors, and without doing any stupid name
 mangling."
-  (when (probe-file old)
-    (sys-rename old new)))
+  (with-errno-handlers ()
+      (sys-rename old new)
+    (ENOENT nil)))
 
 (defun safely-unwind (trail)
   "Roll back the TRAIL of operations."