org-manual: Improve an example

* doc/org-manual.org (Computed tag filtering): Do not suggest using
one-armed `if' constructs.  Remove misleading "org" prefix, and source
block indentation.
This commit is contained in:
Nicolas Goaziou 2019-12-11 21:51:20 +01:00
parent a8da497261
commit 2e6853e798
1 changed files with 9 additions and 10 deletions

View File

@ -9178,17 +9178,16 @@ calls. You could auto-exclude these tags based on the availability of
the Internet, and outside of business hours, with something like this:
#+begin_src emacs-lisp
(defun org-my-auto-exclude-fn (tag)
(if (cond
((string= tag "net")
(/= 0 (call-process "/sbin/ping" nil nil nil
"-c1" "-q" "-t1" "mail.gnu.org")))
((member tag '("errand" "call"))
(let ((hr (nth 2 (decode-time))))
(or (< hr 8) (> hr 21)))))
(concat "-" tag)))
(defun my-auto-exclude-fn (tag)
(when (cond ((string= tag "net")
(/= 0 (call-process "/sbin/ping" nil nil nil
"-c1" "-q" "-t1" "mail.gnu.org")))
((member tag '("errand" "call"))
(let ((hr (nth 2 (decode-time))))
(or (< hr 8) (> hr 21)))))
(concat "-" tag)))
(setq org-agenda-auto-exclude-function 'org-my-auto-exclude-fn)
(setq org-agenda-auto-exclude-function #'my-auto-exclude-fn)
#+end_src
You can apply this self-adapting filter by using a triple prefix