#7421: Weaker precondition for registering a new coercion.
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Reporter: nthiery | Owner: robertwb
Type: enhancement | Status: needs_review
Priority: blocker | Milestone: sage-4.2.1
Component: coercion | Keywords: coercion
Work_issues: | Author: Nicolas M. Thiéry
Reviewer: Robert Bradshaw | Merged:
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Comment(by nthiery):
With the updated patch register_coercion also does not bark if
_coercions_used is false.
Otherwise, this triggered to failing doctests in
sage/modules/fg_pid/fgp_module.py
and sage/modules/fg_pid/fgp_morphism.py. An expert should investigate why
a coercion gets registered twice in those modules, and whether this is not
a bug. But I vote for postponing that for later.
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Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/7421#comment:6>
Sage <http://www.sagemath.org>
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