--- !ditz.rubyforge.org,2008-03-06/issue 
title: Derivatives of sums do not always display correctly in notebook
desc: |-
  While expressions of the type \nabla_{f}{a_{c} d+b_{c}} print correctly,
  the ones without explicit derivative index, \nabla{a_{c} d+b_{c}}, fail
  to print brackets.
type: :bugfix
component: cadabra
release: "1.17"
reporter: Kasper Peeters <kasper.peeters@aei.mpg.de>
status: :closed
disposition: :fixed
creation_time: 2009-09-02 19:08:55.722106 Z
references: []

id: 9c8f132023a13bdea10ef87e26d37d681705a8d1
log_events: 
- - 2009-09-02 19:09:00.449753 Z
  - Kasper Peeters <kasper.peeters@aei.mpg.de>
  - created
  - ""
- - 2010-01-20 21:26:58.387547 Z
  - Kasper Peeters <kasper.peeters@aei.mpg.de>
  - closed with disposition fixed
  - Hopefully finally fixed now, brackets remain somewhat of a hack...
