Function: rng-blank-p
rng-blank-p is a function alias for string-blank-p, defined in
subr-x.el.gz.
This function is obsolete since 29.1; use string-blank-p instead.
Signature
(rng-blank-p STRING)
Documentation
Check whether STRING is either empty or only whitespace.
The following characters count as whitespace here: space, tab, newline and carriage return.
Aliases
rng-blank-p (obsolete since 29.1)