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-rw-r--r--lisp/calc/calc-alg.el12
1 files changed, 8 insertions, 4 deletions
diff --git a/lisp/calc/calc-alg.el b/lisp/calc/calc-alg.el
index d64e7d7aac1..cbf1dfbe79b 100644
--- a/lisp/calc/calc-alg.el
+++ b/lisp/calc/calc-alg.el
@@ -1587,14 +1587,18 @@
(defvar math-poly-base-const-ok)
(defvar math-poly-base-pred)
-(defun math-polynomial-base (mpb-top-expr &optional math-poly-base-pred)
+;; The variable math-poly-base-top-expr is local to math-polynomial-base,
+;; but is used by math-polynomial-p1 in calc-poly.el, which is called
+;; by math-polynomial-base.
+
+(defun math-polynomial-base (math-poly-base-top-expr &optional math-poly-base-pred)
(or math-poly-base-pred
(setq math-poly-base-pred (function (lambda (base) (math-polynomial-p
- mpb-top-expr base)))))
+ math-poly-base-top-expr base)))))
(or (let ((math-poly-base-const-ok nil))
- (math-polynomial-base-rec mpb-top-expr))
+ (math-polynomial-base-rec math-poly-base-top-expr))
(let ((math-poly-base-const-ok t))
- (math-polynomial-base-rec mpb-top-expr))))
+ (math-polynomial-base-rec math-poly-base-top-expr))))
(defun math-polynomial-base-rec (mpb-expr)
(and (not (Math-objvecp mpb-expr))