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Epsilon User's Manual and Reference
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Epsilon User's Manual and Reference > Variable Reference >

expire-message: system variable

Default value: -1

An EEL function sometimes needs to display some text in the echo area that is only valid until the user performs some action. For instance, a command that displays the number of characters in the buffer might wish to clear that count if the user inserts or deletes some characters. After displaying text with primitives like say( ), note( ), or show_text( ), an EEL function may set this variable to 1 to tell Epsilon to clear that text on the next user key.

More info:

Displaying Status Messages (Primitives)



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