D29418: Strip trailing binary operators

[Yuri Chornoivan]

yurchor created this revision.
yurchor added reviewers: cfeck, davidhurka.
Herald added a project: KDE Edu.
Herald added a subscriber: kde-edu.
yurchor requested review of this revision.

REVISION SUMMARY
  Adopt Mathematica way to translate even erroneous commands
  
  BUG: 420671

TEST PLAN
  Create Cartesian plot with 'f(x)=x+', 'f(x)=x*', 'f(x)=x/', 'f(x)=x^'

REPOSITORY
  R334 KmPlot

BRANCH
  master

REVISION DETAIL
  https://phabricator.kde.org/D29418

AFFECTED FILES
  kmplot/parser.cpp

To: yurchor, cfeck, davidhurka
Cc: kde-edu, narvaez, apol
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