These shortcut keys are common in all modes:
Q
Quit speedbar, and kill the frame.
q
Quit speedbar, and hide the frame. This makes it faster to restore the speedbar frame, than if you press Q.
g
Refresh whatever contents are in speedbar.
t
Toggle speedbar to and from slowbar mode. In slowbar mode, frame tracking is not done.
n
p
Move, respectively, to the next or previous item. A summary of that item will be displayed in the attached frame's minibuffer.
M-n
M-p
同级间移动，跳过同级的子菜单。
Move to the next or previous item in a restricted fashion. If a list is open, the cursor will skip over it. If the cursor is in an open list, it will not leave it.
C-M-n
C-M-p
Move forwards and backwards across extended groups. This lets you quickly skip over all files、directories、or other common sub-items at the same current depth.
C-x b
Switch buffers in the attached frame.
Mode switch
Speedbar can handle multiple modes. There are two modes by default: "File mode" and "Buffer mode". The following shortcut keys can quickly switch between the two modes:
b
Switch into Quick Buffers mode (see Buffer Mode). After one use, the previous display mode is restored.
f
Switch into File mode.
r
Switch back to the previous mode.
Shortcut keys for special functions
Some modes provide groups, lists, and tags (refer to Basic Visuals ). When groups, lists, and tags exist, there are several additional shortcut keys available:
RET, e
Edit/Open the current group or tag. This behavior is dependent on the mode. In general, files or buffers are opened in the attached frame, and directories or group nodes are expanded locally.
+, =
Expand the current group, displaying sub items. When used with a prefix argument, any data that may have been cached is flushed. This is similar to a power click. See Mouse Bindings.
-
Contract the current group, hiding sub items.