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Predicates for Strings (GNU Emacs Lisp Reference Manual)

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For more information about general sequence and array predicates, see Sequences, Arrays, and Vectors, and Arrays.

Function: stringp object ¶

This function returns t if object is a string, nil otherwise.

Function: string-or-null-p object ¶

This function returns t if object is a string or nil. It returns nil otherwise.

Function: char-or-string-p object ¶

This function returns t if object is a string or a character (i.e., an integer), nil otherwise.

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