(Man-init-defvars, Man-build-man-command):

Bind default-directory to "/" to avoid possible error in call-process.

1 files changed, 15 insertions, 11 deletions

diff --git a/lisp/man.el b/lisp/man.el
index a05e2462e4b..51cca38250e 100644
--- a/lisp/man.el
+++ b/lisp/man.el
@@ -362,16 +362,18 @@ This is necessary if one wants to dump man.el with emacs."
   (setq Man-fontify-manpage-flag (and Man-fontify-manpage-flag
                                       window-system))
 
-  (setq Man-sed-script
-        (cond
-         (Man-fontify-manpage-flag
-          nil)
-         ((= 0 (call-process Man-sed-command nil nil nil Man-sysv-sed-script))
-          Man-sysv-sed-script)
-         ((= 0 (call-process Man-sed-command nil nil nil Man-berkeley-sed-script))
-          Man-berkeley-sed-script)
-         (t
-          nil)))
+  ;; Avoid possible error in call-process by using a directory that must exist.
+  (let ((default-directory "/"))
+    (setq Man-sed-script
+          (cond
+           (Man-fontify-manpage-flag
+            nil)
+           ((= 0 (call-process Man-sed-command nil nil nil Man-sysv-sed-script))
+            Man-sysv-sed-script)
+           ((= 0 (call-process Man-sed-command nil nil nil Man-berkeley-sed-script))
+            Man-berkeley-sed-script)
+           (t
+            nil))))
 
   (setq Man-filter-list
         (list
@@ -575,7 +577,9 @@ If a buffer already exists for this man page, it will display immediately."
         (set-buffer buffer)
         (setq Man-original-frame (selected-frame))
         (setq Man-arguments man-args))
-      (let ((process-environment (copy-sequence process-environment)))
+      (let ((process-environment (copy-sequence process-environment))
+            ;; Avoid possible error by using a directory that always exists.
+            (default-directory "/"))
         ;; Prevent any attempt to use display terminal fanciness.
         (setenv "TERM" "dumb")
         (if (fboundp 'start-process)