047d94d505
Today I found yet another way for the "Stage Hunk" and "Unstage Hunk" context menu actions to leave the wrong state enabled in the UI. The problem this time was that I connected the state determination to the value of $::current_diff_side (the side the diff is from). When the user was last looking at a diff from the index side and unstages everything the diff panel goes empty, but the action stayed enabled as we always assumed unstaging was a valid action. This change moves the logic for determining when the action is enabled away from the individual side selection, as they really are two unrelated concepts. Signed-off-by: Shawn O. Pearce <spearce@spearce.org>