如何在 Emacs 中获取以某个键(组合)开头的命令列表?
我可以使用 Ch c (describe-key-briefly
) 并输入一个组合键,它会返回绑定到它的函数。但我也想仅键入组合键的前缀,并让它列出并描述绑定到以其开头的键序列的所有函数,例如“所有以 Cx< 开头的绑定键/代码>”。
I can use C-h c
(describe-key-briefly
) and type a key combination and it will return me the function bound to it. But I'd also like to type only a prefix of a key combination and have it list and describe all functions bound to key sequences starting with it, like "all bound keys starting with C-x
".
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执行组合键,然后执行 Ch.对于 Cx 的示例,请执行 Cx Ch。这也适用于子地图,例如 Cx r Ch 可以查看 Cx r 下的所有内容
Do the key combo then C-h. For your example of C-x, do C-x C-h. This also works with sub-maps, e.g. C-x r C-h to see everything under C-x r
也不是每个前缀键都以这种方式工作(在其后面加上 Ch 以查看绑定)。
这里还有两个可以提供帮助的资源:
help-fns+.el
。但要使用它,您需要有可用的键盘映射(例如作为变量的值,例如ctl-x-map
)。与仅在键映射变量上使用 Ch v 不同,输出是人类可读的。冰柱 按键完成。只需输入前缀键,然后点击
S-TAB
。缓冲区*Completions*
显示所有可能的完成:键及其关联的命令(或...
如果它们本身就是前缀键)。对于多级前缀键(例如Cx r),候选键包括前缀键(例如前缀键r到部分完整前缀键Cx)。您可以通过这种方式在键盘映射层次结构中上下导航。您可以在候选者之间循环,并在任何候选者上点击 CM-RET 以查看他们的完整帮助。It is also not the case that every prefix key works this way (follow it with C-h to see the bindings).
Here are two additional resources that can help:
Command
describe-keymap
, inhelp-fns+.el
. But to use it you need to have the keymap available (e.g. as the value of a variable, such asctl-x-map
). Unlike just using C-h v on a keymap variable, the output is human readable.Icicles key completion. Just type the prefix key, then hit
S-TAB
. Buffer*Completions*
shows you all possible completions: the keys plus their associated commands (or...
if they are themselves prefix keys). For multiple-level prefix keys (e.g. C-x r) the candidates include prefix keys (e.g. prefix key r to partially complete prefix key C-x). You can navigate up and down the keymap hierarchy this way. And you can cycle among candidates and hit C-M-RET on any to see their complete help.