doc: Document default delimiter of string-join.
* doc/ref/api-data.texi (String Constructors): Document default delimiter of the string-join function. * libguile/srfi-13.c (scm_string_join): Adjust docstring accordingly. Signed-off-by: Ludovic Courtès <ludo@gnu.org>
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@ -3183,9 +3183,10 @@ produce the corresponding string element. The order in which
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@deffnx {C Function} scm_string_join (ls, delimiter, grammar)
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Append the string in the string list @var{ls}, using the string
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@var{delimiter} as a delimiter between the elements of @var{ls}.
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@var{grammar} is a symbol which specifies how the delimiter is
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placed between the strings, and defaults to the symbol
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@code{infix}.
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@var{delimiter} defaults to @w{@samp{ }}, that is, strings in @var{ls}
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are appended with the space character in between them. @var{grammar} is
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a symbol which specifies how the delimiter is placed between the
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strings, and defaults to the symbol @code{infix}.
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@table @code
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@item infix
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