(math-svo-c, math-svo-wid, math-svo-off): New variables.

(math-svo-c, math-svo-wid, math-svo-off): New variables.
(math-stack-value-offset-fancy): Replace variables c, wid and off
by declared variables.

(math-comp-just, math-comp-comma-spc): New variables.
(math-compose-expr, math-compose-matrix): Replace variable just by
declared variable.

(math-comp-vector-prec): New variable.
(math-compose-expr, math-compose-matrix, math-compose-rows): Replace
variable vector-prec by declared variable.

(math-comp-left-bracket, math-comp-right-bracket, math-comp-comma): New variables.
(math-compose-expr, math-compose-rows): Replace variables left-bracket,
right-bracket and comma by declared variables.

(math-comp-full-width): New variable.
(math-comp-to-string-flat, math-comp-to-string-flat-term): Replace
variable full-width by declared variable.

(math-comp-sel-tag): Declared it.

(math-comp-highlight, math-comp-word, math-comp-level)
(math-comp-margin, math-comp-pos, math-comp-buf, math-comp-base)
(math-comp-hgt, math-comp-tag, math-comp-hpos, math-comp-vpos):
New variables.

(math-comp-to-string-flat, math-comp-to-string-flat-term)
(math-comp-sel-flat-term): Replace variables comp-highlight, comp-word,
comp-level, comp-margin, comp-pos and comp-buf by declared variables.

(math-comp-simplify, math-comp-simplify-term, math-comp-add-string)
(math-comp-add-string-sel): Replace variables comp-highlight,
comp-buf, comp-base, comp-height, comp-tag, comp-hpos and comp-vpos
by declared variables.