* man.el (Man-completion-table): default-directory "/" in case

doesn't otherwise exist.  process-environment COLUMNS=999 so as
not to truncate long names.  process-connection-type pipe to avoid
any chance of hitting the pseudo-tty TIOCGWINSZ.  (Further to
Bug#3717.)

diff --git a/lisp/man.el b/lisp/man.el
index 25ba3eb0638c8606c14830616f2f0f3294fc0a90..cbec29f125014e085f9f19a8d808acb04f8a4b5b 100644 (file)
--- a/lisp/man.el
+++ b/lisp/man.el
@@ -761,14 +761,18 @@ POS defaults to `point'."
       (unless (and Man-completion-cache
                    (string-prefix-p (car Man-completion-cache) string))
       (with-temp-buffer
+       (setq default-directory "/") ;; in case inherited doesn't exist
         ;; Actually for my `man' the arg is a regexp.  Don't know how
         ;; standard that is.  Also, it's not clear what kind of
         ;; regexp are accepted: under GNU/Linux it seems it's ERE-style,
         ;; whereas under MacOSX it seems to be BRE-style and
         ;; doesn't accept backslashes at all.  Let's not bother to
         ;; quote anything.
+       (let ((process-connection-type nil) ;; pipe
+             (process-environment (copy-sequence process-environment)))
+         (setenv "COLUMNS" "999") ;; don't truncate long names
           (call-process manual-program nil '(t nil) nil
-                        "-k" (concat "^" string))
+                        "-k" (concat "^" string)))
         (goto-char (point-min))
         (while (re-search-forward "^[^ \t\n]+\\(?: (.+?)\\)?" nil t)
           (push (match-string 0) table)))