Mv(coeffs, 'odd') is nonsensical

[eric-wieser]

I believe the intent of 'odd' is for usage like:

>>> g, *a = Ga.build('e*1|2|3|4')
>>> g.mv('A', 'odd')
A__1*e_1 + A__2*e_2 + A__3*e_3 + A__4*e_4 + A__5*e_5 + A__123*e_1^e_2^e_3 + A__124*e_1^e_2^e_4 + A__125*e_1^e_2^e_5 + A__134*e_1^e_3^e_4 + A__135*e_1^e_3^e_5 + A__145*e_1^e_4^e_5 + A__234*e_2^e_3^e_4 + A__235*e_2^e_3^e_5 + A__245*e_2^e_4^e_5 + A__345*e_3^e_4^e_5 + A__12345*e_1^e_2^e_3^e_4^e_5

However, it can be also use as

>>> g, *a = Ga.build('e*1|2|3|4')
>>> g.mv([2], 'odd')
2*e_1 + 2*e_1^e_2^e_3 + 2*e_1^e_2^e_3^e_4^e_5
>>> g.mv([2, 3], 'odd')
ValueError: Too many coefficients

This doesn't seem remotely useful - I'd propose we deprecate or outright remove it. 'even' already forbids this usage.

[utensil]

Is this fixed?

[eric-wieser]

Not fixed, but easy to fix