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%-Constructs in the Mode Line, Up: Mode Line Format [Contents][Index]
Certain text properties are meaningful in the
mode line. The
face property affects the appearance of text; the
help-echo property associates help strings with the text, and
keymap can make the text mouse-sensitive.
There are four ways to specify text properties for text in the mode line:
(:propertize elt props…)construct to give elt a text property specified by props.
:eval formin the mode line data structure, and make form evaluate to a string that has a text property.
You can use the
keymap property to specify a keymap. This
keymap only takes real effect for mouse clicks; binding character keys
and function keys to it has no effect, since it is impossible to move
point into the mode line.
When the mode line refers to a variable which does not have a
risky-local-variable property, any text
properties given or specified within that variable’s values are
ignored. This is because such properties could otherwise specify
functions to be called, and those functions could come from file