Re: require basic stuff from specific packages

[Udyant Wig]

Did you try an implementation like this for your functionality?


(require 'cl-lib)

(defun* string-number-sequnce (start end &optional (step 1) (separator " "))
  "Return a string of the integer sequence from START to END by an optional 
STEP.

The optional third argument STEP denotes the increment of the sequence.
The optional fourth argument SEPARATOR denotes the string to insert between 
members."
  (mapconcat #'identity (cl-loop for i from start to end by step
                                 collect (format "%d" i))
             separator))

(string-number-sequnce 1 10)
=> "1 2 3 4 5 6 7 8 9 10"
(string-number-sequnce 3 5 3)
=> "3"
(string-number-sequnce 5 15 2)
=> "5 7 9 11 13 15"
(string-number-sequnce 20 30 3 ", ")
=> "20, 23, 26, 29"


-- 
Udyant Wig