How to traverse code completion list?
Answered

When we use code completion, there are two kinds of methods to insert: enter to insert and tab to replace. Actually, in most situations we replace the word rather than insert.
Now I want to go to next completion through pressing tab, and go to last completion through pressing shift+tab. For example, press tab to "abstarct" like pic, then press shift+tab to return to "class". How to implement this way?
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In the context of opened completion lists, TAB and Enter are reserved for replacing and inserting selected items.
You can use UP/DOWN arrows to navigate the list.
Then I have to let my hand leave the main keyboard area, and press the arrow keys 8km away.
Feel free to submit a new feature request to our issue tracking system to have this behavior changed.
See this article if you are not familiar with YouTrack.