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; Document creation of strings from copies of other strings

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* doc/lispref/strings.texi (Creating Strings): Document how to
create a string from N copies of another string.  (Bug#80256)
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Eli Zaretskii 2026-02-07 14:22:12 +02:00
parent 04bb557d7e
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doc/lispref/strings.texi
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@ -281,6 +281,17 @@ another string, alter a constant string in the program, or even raise
an error. To obtain a string that you can safely mutate, use
@code{copy-sequence} on the result.
If you need to create a string made from @var{n} copies of a given
source string @var{source}, you can use @code{concat} as follows:
@lisp
(apply #'concat (make-list @var{n} @var{source}))
@end lisp
@noindent
This uses the fact that @code{concat} can take any kind of sequence as
its arguments.
For information about other concatenation functions, see the
description of @code{mapconcat} in @ref{Mapping Functions},
@code{vconcat} in @ref{Vector Functions}, and @code{append} in @ref{Building