file.
(calc-selection-cache-num, calc-selection-cache-comp)
(calc-selection-cache-offset, calc-selection-true-num)
(calc-final-point-line, calc-final-point-column)
(calc-original-buffer): Declare them.
(calc-fnp-op, calc-fnp-num): New variables.
(calc-find-nth-part, calc-find-nth-part-rec)
(calc-select-previous): Replace op and num by declared variables.
(calc-rsf-old, calc-rsf-new): New variables.
(calc-replace-sub-formula, calc-replace-sub-formula-rec):
Replace variables old and new by declared variables.
(calc-sel-reselect): New variable.
(calc-auto-selection, calc-enter-selection, calc-edit-selection)
(calc-sel-evaluate, calc-sel-expand-formula, calc-sel-expand-formula)
(calc-sel-mult-both-sides, calc-sel-add-both-sides): Replace variable
reselect with declared variable.
(calc-edit-disp-trail): Declare it.
(calc-finish-selection-edit): Replace variable disp-trail by declared
variable.
(syms_of_search): Defvar it.
(compile_pattern_1): Call re_set_whitespace_regexp with it.
(search_buffer): No regexp is trivial if Vsearch_whitespace_regexp is non-nil.
Replaced argument expr in all calls of math-defsimplify by
math-simplify-expr.
(math-simplify-units-prod): Replaced variable expr by declared
variable math-simplify-expr.
(math-eval-rules-cache, math-eval-rules-cache-other): Declared them.
(math-top-only): New variable
(math-simplify, math-simplify-step): Replace variable top-only by
declared variable math-top-only.
(math-simplify-expr): Declared it.
Replaced argument expr in all calls of math-defsimplify by
math-simplify-expr.
(math-simplify-plus, math-simplify-times, math-simplify-divide)
(math-simplify-divisor, math-simplify-one-divisor)
(math-simplify-mod, math-simplify-ineq, math-simplify-sqrt)
(math-simplify-pow): Replaced variable expr by declared variable
math-simplify-expr.
(math-simplify-divisor): Removed local variables temp and op.
(math-simplify-one-divisor): Made temp and op local variables.
(math-simplify-divisor-nover, math-simplify-divisor-dover): New
variables.
(math-simplify-divisor, math-simplify-one-divisor): Use declared
variables.
(math-expr-subst-new, math-expr-subst-old): New variables.
(math-expr-subst, math-expr-subst-rec): Use declared variables.
(math-is-poly-degree, math-is-poly-loose): New variables.
(math-is-polynomial, math-is-poly-rec): Use declared variables.
(math-poly-base-const-ok, math-poly-base-pred): New variables.
(math-polynomial-base, math-polynomial-base-rec): Use declared
variables.