- PDF Link: cheatsheet-emacs-A4.pdf, Category: languages
- Blog URL: https://cheatsheet.dennyzhang.com/cheatsheet-emacs-A4
- Related posts: Vim CheatSheet, #denny-cheatsheets
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See more CheatSheets from Denny: #denny-cheatsheets
_____________________________________________ | | | Sequence | | ______ ________________________________ | | | | | | | | | List | | Array | | | | | | ________ ________ | | | |______| | | | | | | | | | | Vector | | String | | | | | |________| |________| | | | | ____________ _____________ | | | | | | | | | | | | | Char-table | | Bool-vector | | | | | |____________| |_____________| | | | |________________________________| | |_____________________________________________|
| Name | Comment |
|---|---|
| Move forward across one balanced expression | forward-sexp C-M-f |
| Move backward across one balanced expression | backward-sexp C-M-b |
| Name | Comment |
|---|---|
| Make page size bigger | #+LATEX_HEADER: \usepackage[margin=0.5in]{geometry} Link: stackexchange |
| Change document class | #+LaTeX_CLASS_OPTIONS: [a4paper] Link: stackexchange |
| Add the date of today | #+LATEX_HEADER: \rhead{Updated: \today} Link: stackexchange |
| Add page number with total pages | #+LATEX_HEADER: \rfoot{\thepage\ of \pageref{LastPage}} |
| Name | Comment |
|---|---|
| Move to top | (goto-char (point-min)) |
| Replace string by regexp | buffer-replace.el |
| Delete region | (delete-region start-pos end-pos) |
| Buffer string with plain text | (buffer-substring-no-properties start-pos end-pos) |
(get-buffer-create BUFFER-OR-NAME) | |
(current-buffer) | |
(set-buffer BUFFER-OR-NAME) | |
(kill-buffer) | |
(set-buffer-modified-p nil) |
| Name | Comment |
|---|---|
| Create delayed email | gnus-delay-article C-c C-j |
| Save mail’s attachment | gnus-summary-save-parts |
| Forward mail | gnus-summary-mail-forward |
| Send gnus drafts | gnus-draft-send-message |
| Send all the sendable drafts | gnus-draft-send-all-messages |
| Add attachment | mml-attach-file(C-c C-m f) |
| Create group | gnus-group-make-group (G m) |
#+NAME: supplies | Date | Category | Amount | |------------+------------------+--------| | 2014/01/14 | Supplies | 43.97 | | 2014/02/15 | Supplies | 56.48 | | 2014/02/11 | Book | 17.99 | | 2014/06/10 | Kinesis Keyboard | 289.16 | | 2014/08/23 | Printer | 99.96 | | 2014/08/30 | Supplies | 58.26 | | 2014/08/22 | Books | 18.99 | | 2014/08/25 | Books | 7.50 | | 2014/09/15 | Books | 21.49 | | 2014/12/31 | Toner Service | :=24.95*4 | |------------+------------------+--------| | | Total: | | #+TBLFM: @>$3=vsum(@2..@-1);%.2f
| Name | Comment |
|---|---|
| Debug a function | edebug-defun |
| Change function via advice | defadvice ;; Super inspiring feature! |
| Set default value | (setq-default indent-tabs-mode nil) |
| Name | Comment |
|---|---|
| string1 contains string2 | (string-match ".*README.org" buffer-file-truename) |
| Replace by regexp | (setq ret (replace-regexp-in-string "<hr/>" "" ret)) |
| Format string | (format "%s/%s" mywordpress-server-url blog-uri) |
| String replace | (replace-string from-string to-string &optional start end) |
| Replace by regexp | (replace-regexp REGEXP TO-STRING &optional DELIMITED START END) |
| replace-match | (while (search-forward-regexp "myRegexPattern" nil t) (replace-match "myRepStr")) |
| The second captured string | (match-string 2) |
| Get the position of the 2nd captured string | (match-beginning 2) (match-end 2) |
| List matched count | (setq myStr (replace-regexp-in-string "myRegex1" "myRep1" myStr)) (count-matches "\n") |
| Grab the start and end positions of a word | (setq myBoundaries (bounds-of-thing-at-point 'word)) |
(setq myStr (buffer-substring myStartPos myEndPos)) | |
(setq myStr (buffer-substring-no-properties myStartPos myEndPos)) |
| Name | Comment |
|---|---|
| Regexp In Emacs | regexp-string-match.el |
| Change a given string using regex | (replace-regexp-in-string "^ +" "" url) |
| Seach regexp in some string | (string-match myRegex myStr) |
| Get captured match | (match-string 1 myStr) |
| Escape special characters | (regexp-quote "^") |
(regexp-opt '=("hello" "world"))= |
| Name | Comment |
|---|---|
| String to int | (string-to-number STRING &optional BASE) |
| Check whether it’s int | (integerp 23) |
| decimal to hex | (format "%x" 10) |
| hex to decimal | (format "%d" #xa) |
| Name | Comment |
|---|---|
| Get the first element | (car mylist) |
| Get the nth element | (nth n mylist) |
| Get the last element | (car (last mylist)) |
| Get the 2nd to the last elements | (cdr mylist) |
| Get the nth to the last elements | (nthcdr n mylist) |
| Similar to (car (car value)) | (caar value) |
| Similar to (cdr (car value)) | (cdar value) |
| Return the cdr of the cdr of X. | (cddr X) |
| Name | Comment |
|---|---|
| Create a list | (defvar my-list (list "item1, item2")) |
| Add item to list | (add-to-list 'my-list "item3") |
| Head of a list | (car '(a b c)) |
| Tail of a list | (cdr '(a b c)) |
| Loop a list | (dolist (item my-list) (message item)) |
| Concat two lists | (nconc '("a" "b" "c") '("d" "e" "f")) link |
| Return a newly created list | (list x) |
| Append x to the head of a list | (cons x mylist) |
| Append without duplication | (add-to-list 'auto-mode-alist '("\\.gp$" . gnuplot-mode)) |
| Add ELEMENT if missing | (add-to-list LIST-VAR ELEMENT &optional APPEND COMPARE-FN) |
| Name | Comment |
|---|---|
| Return character at position | (char-after (point)) |
| Return character preceding position | (char-before (point)) |
(setq myStr (thing-at-point 'word)) | |
(setq myStr (thing-at-point 'symbol)) | |
(setq myStr (thing-at-point 'line)) |
| Name | Comment |
|---|---|
| Insert string | (insert "hello world") |
(insert-buffer-substring buffer &optional start end) | |
(insert-buffer-substring-no-properties buffer &optional start end) | |
(insert-file-contents myPath) | |
(insert-file-contents-literally filename &optional visit beg end replace) |
| Name | Comment |
|---|---|
(delete-char 9) | |
(delete-region myStartPos myEndPos) | |
(erase-buffer) | |
(upcase obj) | |
(upcase-word n) | |
(upcase-region beg end) | |
(upcase-initials obj) | |
(upcase-initials-region beg end) | |
(capitalize obj) | |
(capitalize-word n) | |
(capitalize-region beg end) | |
(downcase) | |
(downcase-word n) | |
(downcase-region beg end) |
| Name | Comment |
|---|---|
| Convert time to string | (format-time-string "<%Y-%m-%d %H:%M UTC +8>" (current-time)) |
| Get current time | (current-time) |
| Add some offset for a time | (time-add time (seconds-to-time seconds)) |
| Subtract two time values | (time-subtract after-init-time before-init-time) |
| Get second count | (float-time (time-subtract after-init-time before-init-time)) |
| Return date as a list (mm/dd/yyyy) | calendar-current-date |
(calendar-extract-month date) | |
| m1 will be changed | (calendar-increment-month m1 y1 -1) |
(calendar-date-compare '((12 27 2012)) '((12 26 2012))) | |
(calendar-holiday-list) |
| Name | Comment |
|---|---|
| Add hook | (add-hook 'myhook '(lambda () (insert "fun1 was called "))) |
| Run each hook in myhook | (run-hooks 'myhook) |
| Name | Comment |
|---|---|
| Open file | (find-file html-file) |
| Save file | (write-file html-file nil) |
| Get short filename | (file-name-nondirectory somefilename) |
| Get the directory name from filename | (file-name-directory FILENAME) |
| Check file/directories existence | (file-exists-p bfilename) |
| Insert contents of file FILENAME after point | (insert-file-contents somefilename) |
| Return FILENAME’s final “extension” | (file-name-extension "test.erl") |
| Return FILENAME sans final “extension” | (file-name-sans-extension "test.erl") |
| Return a list of names of files in DIRECTORY | (directory-files DIRECTORY &optional FULL MATCH NOSORT) |
| Insert contents of file FILENAME after point | (insert-file-contents FILENAME &optional VISIT BEG END REPLACE) |
| Confirm directory exists | (file-directory-p FILENAME) |
| Create directory | (make-directory "~/.emacs.d/autosaves/" t) |
| Find files by name | (find-dired "../" "-name defined.hrl") |
| read file content into a string | (setq dddstring (with-temp-buffer (insert-file-contents "dd.txt")=(buffer-string))) |
License: Code is licensed under MIT License.