The first application of custom searches is the definition of keyboard shortcuts for frequently used searches, either creating an agenda buffer, or a sparse tree (the latter covering of course only the current buffer).
Custom commands are configured in the variable
org-agenda-custom-commands. You can customize this variable, for
example by pressing C from the agenda dispatcher (see Agenda Dispatcher). You can also directly set it with Emacs Lisp in
the Emacs init file. The following example contains all valid agenda
(setq org-agenda-custom-commands '(("x" agenda) ("y" agenda*) ("w" todo "WAITING") ("W" todo-tree "WAITING") ("u" tags "+boss-urgent") ("v" tags-todo "+boss-urgent") ("U" tags-tree "+boss-urgent") ("f" occur-tree "\\<FIXME\\>") ("h" . "HOME+Name tags searches") ;description for "h" prefix ("hl" tags "+home+Lisa") ("hp" tags "+home+Peter") ("hk" tags "+home+Kim")))
The initial string in each entry defines the keys you have to press after the dispatcher command in order to access the command. Usually this will be just a single character, but if you have many similar commands, you can also define two-letter combinations where the first character is the same in several combinations and serves as a prefix key101. The second parameter is the search type, followed by the string or regular expression to be used for the matching. The example above will therefore define:
as a global search for agenda entries planned102 this week/day.
as the same search, but only for entries with an hour specification like ‘[h]h:mm’—think of them as appointments.
as a global search for TODO entries with ‘WAITING’ as the TODO keyword.
as the same search, but only in the current buffer and displaying the results as a sparse tree.
as a global tags search for headlines tagged ‘boss’ but not ‘urgent’.
The same search, but limiting it to headlines that are also TODO items.
as the same search, but only in the current buffer and displaying the result as a sparse tree.
to create a sparse tree (again, current buffer only) with all entries containing the word ‘FIXME’.
as a prefix command for a ‘HOME’ tags search where you have to press an additional key (l, p or k) to select a name (Lisa, Peter, or Kim) as additional tag to match.
*-tree agenda views need to be called from an Org buffer
as they operate on the current buffer only.
You can provide a description for a prefix key by inserting a cons cell with the prefix and the description.
Planned means here that these entries have some planning
information attached to them, like a time-stamp, a scheduled or
a deadline string. See
org-agenda-entry-types on how to set what
planning information is taken into account.