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-rw-r--r--lisp/subr.el2
1 files changed, 1 insertions, 1 deletions
diff --git a/lisp/subr.el b/lisp/subr.el
index a8e3df14cd3..28ba30f584e 100644
--- a/lisp/subr.el
+++ b/lisp/subr.el
@@ -4481,7 +4481,7 @@ Otherwise, return nil."
"Return the SHA-1 (Secure Hash Algorithm) of an OBJECT.
OBJECT is either a string or a buffer. Optional arguments START and
END are character positions specifying which portion of OBJECT for
-computing the hash. If BINARY is non-nil, return a 40-byte unibyte
+computing the hash. If BINARY is non-nil, return a 20-byte unibyte
string; otherwise return a 40-character string.
Note that SHA-1 is not collision resistant and should not be used