diff options
Diffstat (limited to 'src/fns.c')
| -rw-r--r-- | src/fns.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/src/fns.c b/src/fns.c index 6f358dd1ba4..76c76c92ba9 100644 --- a/src/fns.c +++ b/src/fns.c @@ -2855,12 +2855,16 @@ mapcar1 (EMACS_INT leni, Lisp_Object *vals, Lisp_Object fn, Lisp_Object seq) return leni; } -DEFUN ("mapconcat", Fmapconcat, Smapconcat, 3, 3, 0, +DEFUN ("mapconcat", Fmapconcat, Smapconcat, 2, 3, 0, doc: /* Apply FUNCTION to each element of SEQUENCE, and concat the results as strings. In between each pair of results, stick in SEPARATOR. Thus, " " as SEPARATOR results in spaces between the values returned by FUNCTION. + SEQUENCE may be a list, a vector, a bool-vector, or a string. -SEPARATOR must be a string, a vector, or a list of characters. + +Optional argument SEPARATOR must be a string, a vector, or a list of +characters; nil stands for the empty string. + FUNCTION must be a function of one argument, and must return a value that is a sequence of characters: either a string, or a vector or list of numbers that are valid character codepoints. */) |