digit-char-or-space-p

Arguments: character

Returns true if either digit-char-p returns true for the specified character or the character is a space.

character should be a character. Otherwise it is an error.

This function is handy as a predicate function in the *template-chars* association list, to allow the user to type either a numeral or a space at a certain position.

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Created 2019.8.20.