Option to combine symbolic fractions recursively

[rwst]

Maxima combines fractions only on the top level, not recursively:

sage: 1/x + 1/x^2 + (x+1)/x
(x + 1)/x + 1/x + 1/x^2
sage: (1/x + 1/x^2 + (x+1)/x).combine()
(x + 2)/x + 1/x^2
sage: (1/x + (1/x+1/x^2+(x+1)/x)/x^2 + (x+1)/x).combine()
(x + 2)/x + ((x + 1)/x + 1/x + 1/x^2)/x^2

Upstream: Fixed upstream, but not in a stable release.

Component: symbolics

Issue created by migration from https://trac.sagemath.org/ticket/20858

[rwst]

comment:1

This is implemented in Pynac master. Corresponding Sage Python and doctests are in the pynac/sage github branch.

[rwst]

Upstream: Fixed upstream, but not in a stable release.

[embray]

comment:3

Determined to be invalid/duplicate/wontfix (closing as "wontfix" as a catch-all resolution).