Only evaluate `fexpr` in `fexpr(kw=...)` once#21519

Merged

JeffBezanson merged 2 commits intomasterfrom mh/fix_21518

Apr 27, 2017

+17-4

Commits on Apr 25, 2017

Only evaluate fexpr in fexpr(kw=...) once
martinholters
committed

Commits on Apr 26, 2017

update according to reviews
martinholters
committed