Subsets element construction is broken

[hivert]

sage: S2 = Subsets(2)
sage: S2([])
<type 'sage.structure.parent.Set_generic'>
sage: S2([1])
<type 'sage.structure.parent.Set_generic'>

The attached patch fixes this.

CC: @sagetrac-sage-combinat

Component: combinatorics

Keywords: Subsets constructor

Author: Florent Hivert

Reviewer: Nicolas M. Thiéry

Merged: sage-4.4.4.alpha0

Issue created by migration from https://trac.sagemath.org/ticket/8902

[hivert]

comment:1

Note: This is a temporary fixes before the cleanup of combinat (categorification of the combinatorial classes is done).

[hivert]

Author: Florent Hivert

[hivert]

Attachment: trac_8902-subsets_call_fix-fh.patch.gz

[hivert]

Reviewer: Nicolas M. Thiéry

[hivert]

comment:3

Nicolas on sage-combinat series file:

trac_8902-subsets_call_fix-fh.patch               # Positive review, assuming tests pass (NT)

I got a all test passes on massena.

Note: the category related problem we discussed on the phone is postponed until #8910 in the patch trac_8910-subsets_an_element-fh.patch.

If you are ok with that can you put a positive review ?

[mwhansen]

Merged: sage-4.4.4.alpha0