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[Matthew Paul Thomas <mpt@xxxxxxxxxxxxx>]

What is the same keybinding behavior? How do you expand/collapse a
GtkTreeView branch with the keyboard?

The keyboard navigation I specified is consistent with Nautilus. (Except
that in Nautilus, Space opens the folder. In USC expanding the branch is
the closest equivalent to that.)

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https://bugs.launchpad.net/bugs/828680

Title:
  In "History" screen, Left, Right, and Space keys don't work

Status in Ubuntu Software Center:
  Unknown
Status in “gtk+3.0” package in Ubuntu:
  New
Status in “software-center” package in Ubuntu:
  Confirmed

Bug description:
  Ubuntu Software Centre 4.1.15, Ubuntu Ocelot
  software-center-gtk3 trunk r2119, Ubuntu Ocelot

  1. Navigate to the History screen.
  2. With the keyboard, select a date branch that is not currently expanded.
  3. Press Right.
  4. Press Left.
  5. Press Space.
  6. Press Space again.

  What happens: (3, 4, 5, 6) Nothing.

  What should happen:
  3. The branch expands.
  4. The branch collapses.
  5. The branch expands.
  6. The branch collapses.

  <https://wiki.ubuntu.com/SoftwareCenter#history>: "Clicking anywhere
  on a branch — or pressing Space when it is selected — should expand it
  if it is collapsed, and collapse it if it is expanded. When a branch
  is selected, pressing Right should also expand it, and Left collapse
  it."

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