Info Catalog elisp: Logging Messages elisp: The Echo Area

elisp: Echo Area Customization

 
 37.4.4 Echo Area Customization
 ------------------------------
 
 These variables control details of how the echo area works.
 
  -- Variable: cursor-in-echo-area
      This variable controls where the cursor appears when a message is
      displayed in the echo area.  If it is non-‘nil’, then the cursor
      appears at the end of the message.  Otherwise, the cursor appears
      at point—not in the echo area at all.
 
      The value is normally ‘nil’; Lisp programs bind it to ‘t’ for brief
      periods of time.
 
  -- Variable: echo-area-clear-hook
      This normal hook is run whenever the echo area is cleared—either by
      ‘(message nil)’ or for any other reason.
 
  -- User Option: echo-keystrokes
      This variable determines how much time should elapse before command
      characters echo.  Its value must be a number, and specifies the
      number of seconds to wait before echoing.  If the user types a
      prefix key (such as ‘C-x’) and then delays this many seconds before
      continuing, the prefix key is echoed in the echo area.  (Once
      echoing begins in a key sequence, all subsequent characters in the
      same key sequence are echoed immediately.)
 
      If the value is zero, then command input is not echoed.
 
  -- Variable: message-truncate-lines
      Normally, displaying a long message resizes the echo area to
      display the entire message.  But if the variable
      ‘message-truncate-lines’ is non-‘nil’, the echo area does not
      resize, and the message is truncated to fit it.
 
    The variable ‘max-mini-window-height’, which specifies the maximum
 height for resizing minibuffer windows, also applies to the echo area
 (which is really a special use of the minibuffer window; 
 Minibuffer Misc).
 

Info Catalog elisp: Logging Messages elisp: The Echo Area