Emacs Shortcuts

A list of handy Emacs and SML REPL keyboard shortcuts:

Basics

• C-x C-c Quit Emacs
• C-g Cancel the current action
• C-x C-f Find and open a file (whether or not it already exists)
• C-x C-s Save a file
• C-x C-w Write a file (probably more familiar to you as Save as...)

Moving

• C-e go to end of line
• C-a go to begin of line

Cut, copy, paste

• C-space Set a mark and then move the cursor to highlight a region
• C-w Cut a highlighted region
• M-w Copy a highlighted region
• C-k Cut (kill) from the cursor to the end of the line
• C-y Paste (yank)

Editing

• C-x u Undo
• M-; line comment - region or goes to end of line
• C-u M-; removes line comment
• C-M-\ indent region

Buffers

• C-x b Switch to another buffer by entering its name
• C-x C-b See a list of all current buffers
• C-x 1 Get rid of buffer list
• C-x k kill a buffer

Splits

• C-x 0 Undo window-splitting so there is only 1 buffer; dismiss this split
• C-x 1 Dismiss all other windows
• C-x 2 Split the window horizontally into 2 buffers, one above the other
• C-x o Switch between windows

See Manage Split Windows tutorial.

Commands

• M-p previous command
• M-n next command

SML mode from http://www.smlnj.org/doc/Emacs/sml-mode.html

• C-c C-s SML REPL command
• M-<TAB> Indentation
• <TAB> Indentation
• C-c C-b Send the contents of the current buffer to ML.
• C-c C-l Send a `use file' command to the current ML process.