This section describes the standard functions for displaying messages in the echo area.
This function displays a message in the echo area. format-string is a format string, and arguments are the objects for its format specifications, like in the
formatfunction (see Formatting Strings). The resulting formatted string is displayed in the echo area; if it contains
facetext properties, it is displayed with the specified faces (see Faces). The string is also added to the *Messages* buffer, but without text properties (see Logging Messages).
In batch mode, the message is printed to the standard error stream, followed by a newline.
If format-string is
nilor the empty string,
messageclears the echo area; if the echo area has been expanded automatically, this brings it back to its normal size. If the minibuffer is active, this brings the minibuffer contents back onto the screen immediately.(message "Minibuffer depth is %d." (minibuffer-depth)) -| Minibuffer depth is 0. ⇒ "Minibuffer depth is 0." ---------- Echo Area ---------- Minibuffer depth is 0. ---------- Echo Area ----------
To automatically display a message in the echo area or in a pop-buffer, depending on its size, use
This construct displays a message in the echo area temporarily, during the execution of body. It displays message, executes body, then returns the value of the last body form while restoring the previous echo area contents.
This function displays a message like
message, but may display it in a dialog box instead of the echo area. If this function is called in a command that was invoked using the mouse—more precisely, if
last-nonmenu-event(see Command Loop Info) is either
nilor a list—then it uses a dialog box or pop-up menu to display the message. Otherwise, it uses the echo area. (This is the same criterion that
y-or-n-puses to make a similar decision; see Yes-or-No Queries.)
You can force use of the mouse or of the echo area by binding
last-nonmenu-eventto a suitable value around the call.
This function displays the message message, which may be either a string or a buffer. If it is shorter than the maximum height of the echo area, as defined by
max-mini-window-height, it is displayed in the echo area, using
display-bufferis used to show it in a pop-up buffer.
Returns either the string shown in the echo area, or when a pop-up buffer is used, the window used to display it.
If message is a string, then the optional argument buffer-name is the name of the buffer used to display it when a pop-up buffer is used, defaulting to *Message*. In the case where message is a string and displayed in the echo area, it is not specified whether the contents are inserted into the buffer anyway.
The optional arguments not-this-window and frame are as for
display-buffer, and only used if a buffer is displayed.