Emacs Maintainers,

It appears that a menu item in the ‘calc’ package attempts

to invoke a function that does not exist.

Recipe for producing the error, starting with "emacs -Q"

(Emacs version 27.1)

1. Start the ‘calc’ programmable calculator in Emacs with

the keystrokes: C-x * c

2. Enter two three-element vectors onto calc’s stack with

the following keystrokes, separating each character with a

space or comma:

[ 1 2 3 ]

[ 4 5 6 ]

3. Attempting to calculate the dot product of the two

vectors using the Calc menu item: Calc -> Matrices/Vectors

-> Vectors -> (2:) dot (:1)

Emacs responds with the following error message in the

echo area: "Wrong type argument: commandp, calc-mult".

Note that the menu item also documents the keystroke

alternative, ‘*’. C-h k * reports that ‘*’ invokes the

function ‘calc-times’. Likewise, the alternative menu

item Calc -> Matrices/Vectors -> Matrices -> (2:) dot (:1)

also invokes the function ‘calc-times’. This menu item

and ‘*’ produce the same result.

The Calc -> Matrices/Vectors -> Vectors sub-menu is

defined in the file calc-menu.el (in the lisp/calc

sub-directory): (defvar calc-vectors-menu ...).

The entry that lists the non-existent ‘calc-mult’ function

reads:

["(2:) dot (1:)"

calc-mult

:keys "*"

:active (>= (calc-stack-size) 2)

:help "The dot product"]