| **Keys** | **Description** |
| --- | --- |
| **C** | Ctrl |
| **M** | Alt |
| | **Helper functions:** |
| **C-h k key-binding** | Describe the function bound to the key binding. To get this to work, you actually perform the key sequence after typing *C-h k*. |
| **C-h f** | Describe function. |
| | **Cider/REPL bindings:** |
| **M-x cider-jack-in** | Jack into the REPL |
| | **Window key bindings:** |
**C-x o** | Switch cursor to another window. Try this now to switch between your Clojure file and the REPL. |
**C-x 1** | Delete all other windows, leaving only the current window in the frame. This doesn’t close your buffers, and it won’t cause you to lose any work. |
**C-x 2** | Split frame above and below. |
**C-x 3** | Split frame side by side. |
**C-x 0** | Delete current window. In Emacs, editing takes place in buffers. |
| | **Buffer key bindings** |
| **C-x b** | To switch to a buffer, use **C-x b** and enter the buffer name in the minibuffer. |
| ... | To create a new buffer, use **C-x b** and enter a new buffer name. |
| **C-x C-f** | To open a file, use **C-x C-f** and navigate to the file. |
| ... | To create a new file, use **C-x C-f** and enter the new file’s path. When you save the buffer, Emacs will create the file on the filesystem. |
| **C-x C-s** | To save a buffer to a file. |
| | **Navigation:** |
| **C-a** | Move to beginning of line. |
| **M-m** | Move to first non-whitespace character on the line. |
| **C-e** | Move to end of line. |
| **C-f** | Move forward one character. |
| **C-b** | Move backward one character. |
| **M-f** | Move forward one word (I use this a lot). |
| **M-b** | Move backward one word (I use this a lot, too). |
| **C-s** | Regex search for text in current buffer and move to it. Press **C-s** again to move to next match. |
| **C-r** | Same as **C-s**, but search in reverse. |
| **M-<** | Move to beginning of buffer. |
| **M->** | Move to end of buffer. |
| **M-g g** | Go to line. |
| | **Kill/yank key bindings:** |
| **C-spc** | Selection of regions |
| **C-w** | Kill region. |
| **M-w** | Copy region to kill ring. |
| **C-y** | Yank. |
| **M-y** | Cycle through kill ring after yanking. |
| **M-d** | Kill word. |
| **C-k** | Kill line. |
| | **Editing / Helping:** |
| **Tab** | Indent line. |
| **C-j** | New line and indent, equivalent to enter followed by tab. |
| **M-/** | Hippie expand; cycles through possible expansions of the text before point. |
| **M-\\** | Delete all spaces and tabs around point. (I use this one a lot.) |
| | **Clojure Buffer Key Bindings:** |
| **C-c M-n** | Switch to namespace of current buffer. |
| **C-x C-e** | Evaluate expression immediately preceding point. |
| **C-c C-k** | Compile current buffer. |
| **C-c C-d C-d** | Display documentation for symbol under point. |
| **M-.** and **M-,** | Navigate to source code for symbol under point and return to your original buffer. |
| **C-c C-d C-a** | Apropros search; find arbitrary text across function names and documentation. |
| | **CIDER Buffer Key Bindings** |
| **C-↑, C-↓** | Cycle through REPL history. |
| **C-enter** | Close parentheses and evaluate. |