My little document

• there is emulation for common lisp in emacs
• it is too hard to maintain universal interpretator for scripting it is better to enhance elisp and add support for other languages

• instrumenting - inserts additional code into it, to invoke Edebug at the proper places.

cursor at the end of expression:

• C-x C-e eval-last-sexp Evaluate the expression to the left of cursor.
• C-M-x eval-defun Evaluate top level expression to left and to right of cursor
• C-u C-x C-e eval and insert result to buffer
• C-u C-M-x Instrument and execute current func

other eval

• M-: (eval-expression) type expression in ()

To remove instrumentation from a definition, simply re-evaluate its definition in a way that does not instrument. (‘M-:’) or edebug-remove-instrumentation

source-level debugger - displays the source of the code you are debugging, with an arrow at the left

• can not see variables, but can evaluate any expression (print val)

Instrumenting:

• C-u C-M-x (‘eval-defun’ with a prefix argument) point into the definition of a function

• https://www.gnu.org/software/emacs/manual/html_node/elisp/Debugging.html#Debugging
• https://www.gnu.org/software/emacs/manual/html_node/eintr/Debugging.html
• https://caiorss.github.io/Emacs-Elisp-Programming/Elisp_Programming.html

i Search for a topic in this manual’s Index and go to index entry. c Get current Info path

1. wget https://ftp.gnu.org/gnu/emacs/elisp-manual-21-2.8.tar.gz
2. tar xpf elisp-manual-21-2.8.tar.gz
3. cd elisp-manual-21-2.8
4. ./configure
5. make elisp
6. make install (as root or change prefix)
7. ~/.emacs: (add-to-list 'Info-directory-list "/usr/local/info")

or

bzip -d /usr/share/info/emacs-28/elisp.info.bz2

C-h = F1 C-h ? i manuals a shutcommands r tutorial C-h l история c-h f lisp function (keyboard-translate ?\C-o ?\C-h) C-h b keys bindings C-h e message buffer C-h F help for command: org-mode C-h i info page

M-x shortdoc-display-group

M-x or Esc x - eval-defun - evaluate lisp funcion

C-x C-=(-) enter zoom mode -out =in

M-x recover-file <RET> foo.c <RET> C-h t tutorial for Emacs C-h r read Emacs manual

Modes

• M+x text-mode auto-fill-mode enriched-mode org-mode
• C+x C+q read only/switch mode

C-\ сменить раскладку input-method - default-input-method: russian-computer; -*-

• M-x set-input-method
• F1 C-\ describe current input method

C-x RET r сменить windows-1251

C-g or C-q or C-] or q Cancel (exit from command line, close other window, Esc, )

C+u repeat

deletion:

• C+d delete char
• C+k del to the end of the line
• C+h backspace not working (keyboard-translate ?\C-h ?\C-?)

C-o (open-line) - dont move cursor C-j (newline-and-indent) C-m (newline)

• as

C-x n d Narrow the buffer to the contents of the current function (narrow-to-defun). This will narrow to the function as identified to the current function, even if it is nested in an object or another function. The logic to narrow the function is the same as the beginning-of-defun and end-of-defun commands – see Motion, and the mark-defun command – see above. C-x n w Undo any narrowing by widening the buffer again by making the rest of the buffer available (widen).

C-s C-i search and highlight for Tabs C-s space search for highlight for spaces

• C-M-o Split the current line at point
• M-^ Merge the previous and the current line
• M-i Indent whitespace at point
• C-M-\ Indent all the lines in the region
• C-x TAB used to change the indentation of all lines that begin in the region
• indent-sexp (C-M-q)

• lisp-indent-line (tab key)

  http://community.schemewiki.org/?emacs-indentation https://dougie.io/emacs/indentation/

• C+SPC start of selecton
• C+q cancel, close other window
• C+x C+x swap mark
• C+x h mark all
• M-h Mark the current function (c-mark-function). Puts the mark at the end and of the function and the point at the beginning. Useful if you want to kill the region with C-w or M-w, or indent the region with C-M-\ or C-x TAB (See Indentation.).
• S-M-f select and go by word forward - special for Emacs
• C+w copy
• M+w cut
• C+y paste (yank)
• M+y scrooll paste
• C+/ undo and redo
• File
• C+x C+f open file
• C+x C+s save
• C+x s save all buffers
• EDE Emcas Development Environment
• M+x global-ede-mode
• new project1)visit file in folder 2)M+x ede-new
• target - файл в который строим может состоять из нескольких файлов
  • C-c . t создать С-с . a add file C-c . c compile target C-c . C compile all targets
• ETC.:
• C+d delete character

• C+f b n p cursor nav
• C+a beg of line
• C+e end
• M+m to the indentation the begining of text
• M-a Move back to the beginning of the sentence (backward-sentence).
• M-e Move forward to the end of the sentence (forward-sentence).
• M+Shift+{} backward-paragraph forward-paragraph
• C+v M+v PageDown, PageUp
• C+l scrool
• M+m to the indentation
• C+s search C+r
• C-x C-@ return back after search ( pop-to-mark-command)
• M-x replace-string search and replace
• M-% advanced search and replace
• M+g+g go to line
• C+Home or M+Shift+< start of the page
• C+End or M+Shift+> end of the page
• Scroll Lock - fixate cursor

• C-x is prefix key for general commands
• C-c is prefix key of current major mode's commands.
• Esc (global-set-key (kbd "\e\el") 'goto-line)

• A-S-m set mark

• C-x ( start definition
• C-x ) end definition
• C-x e Execute
• C-u 20 C-x e 20 times
• C-x C-k n RET my M-x insert-kbd-macro RET my Insert in the buffer a keyboard macro’s definition, as Lisp code.

M-x auto-fill-mode M-q refill paragraph С-u C-x f set column to cursor

C+x f set fill column (margin)

https://github.com/jmorag/.emacs.d/blob/master/colemak/colemak-mode.el

https://ftp.gnu.org/old-gnu/Manuals/emacs-20.7/html_node/emacs_457.html https://www.gnu.org/software/emacs/manual/html_node/elisp/General-Escape-Syntax.html https://ftp.gnu.org/old-gnu/Manuals/elisp-manual-21-2.8/html_node/elisp_693.html https://www.gnu.org/software/emacs/manual/html_node/elisp/Classifying-Events.html Emacs contains numerous keymaps that apply in different situations, but there is only one set of keyboard translations, and it applies to every character that Emacs reads from the terminal. Keyboard translations take place at the lowest level of input processing; the keys that are looked up in keymaps contain the characters that result from keyboard translation. (keyboard-translate ?\C-h ?\C-?)

(keyboard-translate ?\C-b ?c) - character

Why not work with M key?

• keyboard-translate works with char tables, hence the characterp error. Modified keys are not necessarily valid as characters.
• (elisp) Char-Tables tells us: "A char-table is much like a vector, except that it is indexed by character codes. Any valid character code, without modifiers, can be used as an index in a char-table."
• The control modifier is a bit special, as typical control characters are still plain ASCII values, and hence valid for characterp.

https://www.gnu.org/software/emacs/manual/html_node/elisp/Function-Keys.html

• ‘A-’ The alt modifier.
• ‘C-’ The control modifier.
• ‘H-’ The hyper modifier.
• ‘M-’ The meta modifier.
• ‘S-’ The shift modifier.
• ‘s-’ The super modifier.

• C-c followed by a control character or a digit are reserved for major modes.
• C-c followed by {, }, <, >, : or ; are also reserved for major modes.
• C-c followed by any other ASCII punctuation or symbol character are allocated for minor modes.
• C-c and a letter (either upper or lower case; ASCII or non-ASCII) are reserved for users;
• F5 - F9 without modifier keys are also reserved for users to define.

• order doesn’t matter: ab is the same chord as ba
• two keys pressed simultaneously, or a single key quickly pressed twice

• define modes like in vi with keys

for window size and zoom

(defhydra hydra-windowsize (global-map "C-x")
    ("{" shrink-window-horizontally)
    ("}" enlarge-window-horizontally))

(defhydra hydra-zoom (global-map "<f2>")
      "zoom"
      ("g" text-scale-increase "in")
   ("l" text-scale-decrease "out"))

F1 s - syntax table

treat '. / . // aw' as a different Word and a./fg.s will be single word also

(modify-syntax-entry ?. "w")
(modify-syntax-entry ?/ "w")

C-? v fill-column - help and get current C-x f - set-fill-column

• M-x package-menu-mark-obsolete-for-deletion
• M-x package-menu-execute

M-x package-list-packages

to mark all upgradable and update all:

1. U package-menu-mark-upgrades
2. x package-menu-execute

to filter all upgradable and update individual:

1. / u package-menu-filter-upgradable
2. manually install and remove obsolate

https://melpa.org/#/getting-started

to ensure that Emacs has fetched the MELPA package list before you can install packages with M-x package-install or similar.

• M-x package-refresh-contents or M-x package-list-packages

Updating Packages:

1. package-list-packages
2. type U (mark Upgradable packages)
3. x (eXecute the installs and deletions).

(require 'package)
(add-to-list 'package-archives '("melpa" . "https://melpa.org/packages/") t)
;; Comment/uncomment this line to enable MELPA Stable if desired.  See `package-archive-priorities`
;; and `package-pinned-packages`. Most users will not need or want to do this.
;;(add-to-list 'package-archives '("melpa-stable" . "https://stable.melpa.org/packages/") t)
(package-initialize)

OR

;; MELPA
(setq url-proxy-services
   '(("no_proxy" . "^\\(localhost\\|10\\..*\\|192\\.168\\..*\\)")
     ("http" . "srv-proxy:8080")
     ("https" . "srv-proxy:8080")))

(require 'package)
(add-to-list 'package-archives '("melpa" . "https://melpa.org/packages/"))
(package-initialize)

The default behavior is to load the first file found. This command prefers .elc files over .el files because compiled files load and run faster.

• load-prefer-newer to a non-nil value, loads whichever version of the file is newest
• load-path. list of directories (strings). These directories are searched, in the specified order
• (require 'my-shining-package) ;; Loads my-shining-package.elc unconditionally.
• (autoload 'my-func "my-shining-package") ;; Will load my-shining-package.elc when my-func is invoked.

Evaluate a complete file. you can leave out the extension and it will automatically load the "elc" or "el" file as appropriate. It also looks into the load-path directories.

Note that you have to add the lisp subdirectory to the load-path, not the top-level of the repository, and that elements of load-path should not end with a slash, while those of Info-directory-list should.

• (add-to-list 'load-path "~/.emacs.d/site-lisp/dash")

Example:

• (load "foo") (if "foo.el" is in the current directory or in the load-path").

load foo.el and require (provide 'foo) in file.

require is similar to load, except it prevents the file from being loaded more than once

initializes Emacs’ internal record of which packages are installed, and then calls package-activate-all.

(package-activate-all) This function makes the packages available to the current session. The user option package-load-list specifies which packages to make available; by default, all installed packages are made available.

• have to explicitly call (require 'package-name) in your init.el before you could do any configuration.
• any configuration of the package may need to be wrapped in a (with-eval-after-load 'package-name …) block, to avoid running into undefined variables and functions before your package is fully loaded - to run code after a package is loaded,

• M-x package-list
• U
• x
• M-x package-autoremove

1. .emacs: (add-to-list 'load-path "~/.emacs.d/contrib/lisp/")
2. git clone https://github.com/magit/magit.git ~/.emacs.d/contrib/lisp/magit
3. .emacs: (require 'magit) or (package-initialize)

Each register has a name that consists of a single character

• C-x r s ? - copy-to-register
• C-x r i ? - insert-register
• C-x r SPC ? - point-to-register
• C-x r j ? - jump-to-register

Bookmarks - persistent registers with long names

• C-x r l List all bookmarks (list-bookmarks).

• C-x r m RET

  Set the bookmark for the visited file, at point.

C-x r m bookmark RET

Set the bookmark named bookmark at point (bookmark-set). C-x r M bookmark RET

Like C-x r m, but don’t overwrite an existing bookmark. C-x r b bookmark RET Jump to the bookmark named bookmark (bookmark-jump).

https://github.com/jrosdahl/iflipb

https://emacs.stackexchange.com/questions/3458/how-to-switch-between-windows-quickly

• arrays - up, down, left, righ: (windmove-default-keybindings 'none)
• https://www.emacswiki.org/emacs/NumberedWindows
  • (global-set-key (kbd "s-1") (lambda() (interactive) (window-number-select 1)))

U:@— - saved

U:@**- - modified

cs:ch-fr  buf      pos line   (major minor)

• cs string and the colon character after it describe the character set and newline convention used for the current buffer.

  • '-', that indicates no special character set handling (with the possible exception of end-of-line conventions,

  described in the next paragraph).

  • '=' means no conversion whatsoever, and is usually used for files containing non-textual data
  • ‘1’ represents ISO Latin-1.
  • two additional characters that describe the coding systems for keyboard input and terminal output.
• ':' - end-of-line convention.
  • ‘\’ or ‘(DOS)’ - MS-DOS convention uses a carriage return character followed by a linefeed character;
  • (‘/’) or ‘(Mac)’ - older Macintosh systems, uses a carriage return character instead of a newline
  • ‘(Unix)’ - On some systems
  • '@' - This indication is typical for frames of an Emacs process running as a daemon

• ch

  • ‘–’ - if the buffer displayed in the window has the same contents as the corresponding file on the disk; i.e., if

  the buffer is unmodified

  • ‘**’ - the buffer is modified
  • ‘%*’ - the buffer is modified for a read-only buffer
  • ‘%%’ - the buffer is not modified for a read-only buffer
• ‘-’ -
  • ‘@’ if default-directory for the current buffer is on a remote machine, ‘@’ is displayed instead.
• fr - It appears only on text terminals. The initial frame’s name is ‘F1’. gives the selected frame name
• buf - is the name of the buffer displayed in the window.
• pos - tells you whether there is additional text above the top of the window, or below the bottom
• line - is the character ‘L’ followed by the line number at point.
• major - is the name of the major mode used in the buffer.
• minor - a list of some of the enabled minor modes
  • ‘Def’- means that a keyboard macro is currently being defined
  • ‘Narrow’ means that the buffer being displayed has editing restricted to only a portion of its text

• Every major mode is associated with a major mode command, whose name should end in ‘-mode’
• unlike minor modes there is no way to “turn off” a major mode, instead the buffer must be switched to a different one

types:

• buffer-local, and can be turned on (enabled) in certain buffers and off (disabled) in others.
• global: while enabled, they affect everything you do in the Emacs session, in all buffers. Most minor modes are disabled by default, but a few are enabled by default.

modes:

fundamental-mode

has no mode-specific definitions or variable settings.

(no term)

see 9.3.6.1

• https://www.gnu.org/software/emacs/manual/html_node/elisp/Completion-in-Buffers.html
• https://oremacs.com/2017/10/04/completion-at-point/

(add-hook), (setq)

• is a Lisp variable which holds a list of functions
• You can set a hook variable with setq like any other Lisp variable, but the recommended way to add a function with add-hook
• two types: normal hooks
  • Every variable whose name ends in ‘-hook’ is a normal hook.
  • abnormal hooks - names end in ‘-functions’, instead of ‘-hook’
• Major mode hooks also apply to other major modes derived from the original mode
• M-x eval-last-sexp RET - to test

C-u C-h a run-hook C-h i g (elisp)Running Hooks

Listing all the Mode Hooks: M-x apropos-variable RET -mode-hook$ RET

lets you add to the existing definition of a function,

• defadvice - old
• advice-add/advice-remove

add-function where place function &optional props
remove-function place function

Enter at empty line execute "Nonincremental search"

• M-c Toggle search case-sensitivity.
• C-w appends more words from text to the search string.
• M-r Toggle between regular-expression searching and literal-string searching.
• M-e Pause to edit the search string. Searching is disabled until you explicitly resume it with ‘C-j’ (or ‘C-s’ or ‘C-r’). reset search.

• isearch-mode forward &optional regexp op-fun recursive-edit regexp-function
  • forward = t
  • regexp = nil
  • op-fun = nil

(setq search-exit-option 'edit)

when you type new key isearch hook it with 'pre-command-hook = isearch-pre-command-hook

• isearch-edit-string
• with-isearch-suspended
• save variables like 'isearch-string'
• (isearch-done t t) - terminate isearching until editing is done
• (isearch-mode …) - Always resume isearching by restarting it
• (setq isearch-string isearch-new-string) - Copy new local values to isearch globals
• (isearch-post-command-hook) -> isearch-search-and-update

global:

• F10 -> 'options' -> 'customize emacs' -> 'custom-themes'.

https://www.gnu.org/software/emacs/manual/html_node/emacs/Fill-Commands.html https://www.gnu.org/software/emacs/manual/html_node/emacs/Displaying-Boundaries.html

C-x f Set the fill column

minor modes:

• M-x display-fill-column-indicator-mode locally
• M-x global-display-fill-column-indicator-mode globally

a VC backend that uses "Emacs backup files" for single-file version control.

• https://git.sr.ht/~pkal/vc-backup

Сохранять #файлы# автосохранения в (setq auto-save-file-name-transforms `((".*" "~/.emacs-saves/" t)))

auto-save-default default is t config:

• auto-save-interval, default 300 - specifies how many characters there are between auto-saves
• auto-save-timeout, default 30 seconds

https://www.gnu.org/software/emacs/manual/html_node/emacs/Backup.html

• C-q C-l insert ^L  - page delimiter
• M-x what-page
• C-x [ backward-page
• C-x ] forward-page
• C-x C-p mark-page
• C-x l count-lines-page
• C-x n p narrow-to-page

• C-x = Display the character code of character after point, character position of point, and column of point
• M-x what-line
• M-= count-words-region
• M-x hl-line-mode - Enable or disable highlighting of the current line

• C-M-x eval-defun - at any postion
• C-x C-e eval-last-sexp - only after line
• M-x eval-region
• M-x eval-buffer
• F1 e message buffer
• F1 f describe function
• F1 v describe global variable
• C-M-v/C-M-S-v scroll another window

• highlight syntax
• find includes
• find where used

https://www.emacswiki.org/emacs/CategoryProject

M-x speedbar - fast navigate between files

• C-j new line and indent
• C-M-q indent C-M-\ indent region or all
• C-i switch indenation for line
• M-x speedbar
• M-/ expand previous word
• C-M-a|e begining|end of function
• M-x delete-trailing-whitespace
• M-x whitespace-newline-mode
• M-; add comment or un/comment region
• M-j continue comment at new line
• C-x C-; un/comment line
• M-s h . highlight all occurance

indentation кол-во пробелов: tab-width (default 8)

• F1 e messages
• C-x d dired
• C-x C-e debugging

C-x TAB indentation mode with arrows.

M-x toggle-truncate-lines Disable lines wrap

M+x cperl-mode help C-h f cperl-mode

https://www.monolune.com/configuring-company-mode-in-emacs/ https://readingworldmagazine.com/emacs/2020-07-27-emacs-company-mode/ https://readingworldmagazine.com/emacs/2021-09-01-emacs-company-continued-first-thing-to-do-when-developing-with-emacs/

• company
• company-jedi - company-mode completion back-end for Python JED

• emacs completion framework It comes with several back-ends: Elisp, Clang, Semantic, Ispell, CMake, BBDB,

Yasnippet, Dabbrev, Etags, Gtags, Files, Keywords

• Not Python

• https://www.emacswiki.org/emacs/PythonProgrammingInEmacs
• TODO: https://realpython.com/emacs-the-best-python-editor/

pip jedi - Python JEDI lib - autocompletion, static analysis and refactoring library for Python

pappasam/jedi-language-server - LSP server for jedi

plugins

• elpy - big
• jedi - big
• Eglot - part of Emacs since 2.9

completion by itself

• CompanyMode - become more popular
• AutoComplete

auto-completion for Python

• direct connection to Jedi: https://github.com/tkf/emacs-jedi
• language servers for Jedi:
  • https://github.com/fredcamps/lsp-jedi
    • https://github.com/pappasam/jedi-language-server
      • poetry and binary huge amount of dependencies
  • https://github.com/palantir/python-language-server
    • idk where is Emacs interface and how to install from sources

Code generation

• yasnippet

Code checker

• Flycheck and FlyMake can be used to wrap checkers such as pep8, pyflakes (flake8 includes both), pylint and pychecker. Both support multiple checkers per buffer.
• autopep8 - formats Python code to conform to the PEP 8 style guide using the pep8 tool.
• black

Viewing generated documentation

• pydoc
  • helm-pydoc
• elpy

• https://nilsdeppe.com/posts/emacs-c++-ide2
• https://www.youtube.com/watch?v=5FQwQ0QWBTU
• rtags irony flycheck https://martinsosic.com/development/emacs/2017/12/09/emacs-cpp-ide.html
• GGTAGS CDET SEMANTIC EDE http://tuhdo.github.io/c-ide.html
• cwarn - build in

C-M-<HOME> Move point to the beginning of the current function (beginning-of-defun). C-M-<END> Move point to the end of the current function (end-of-defun).

C-M-\ Properly indent each line of region (indent-region). C-c C-q Properly indent each line of current top-level function or top-level class (c-indent-defun).

M-; Insert comment at point (comment-dwim). If comment already exist, indent comment (comment-indent). M-j Insert a newline in a comment on the next line with the comment starting at the same column as the current line (c-indent-new-comment-line). C-c C-c Comment out the current region (comment-region). If region is already commented, the region is uncommented. C-u M-; Kill the comment on the current line (comment-kill called by comment-set-column or comment-dwim). C-u n M-; Kill the next n comments (comment-dwim).

convert the tabs to spaces:

1. C-x h
2. M-x untabify RET

M-? find usages (xref-find-references)

people usually use ctags to do two things

• Code navigation
• Auto-complete/IntelliSense

• Flymake is build-in

Flycheck uses backend check program https://www.flycheck.org/en/latest/languages.html#flycheck-languages

• integrated with etags
• build in
• supported tools are GNU Global, GNU Idutils, CScope, and Grep (the fallback method). For best results, use GNU Global.

usage:

• right mouse button
• C-c , j semantic-complete-jump-local defined in the current file
• C-c , J semantic-complete-jump defined in any file Emacs has parsed, and move point there
• C-c , SPC Display a list of possible completions for the symbol at point (semantic-complete-analyze-inline)
• C-c , l Display a list of the possible completions of the symbol at point, in another window

(semantic-add-system-include "/usr/include/boost" 'c++-mode) (semantic-add-system-include "~/linux/kernel") (semantic-add-system-include "~/linux/include")

https://tuhdo.github.io/c-ide.html (setq ;; use gdb-many-windows by default gdb-many-windows t

;; Non-nil means display source file containing the main routine at startup gdb-show-main t )

M-x gdb

run gdb (like this):gdb -i=mi source_file

To use gdb-many-windows, you must always supply the -i=mi argument to gdb, otherwise gdb-many-windows won't work.

• M-q fill-paragraph

You can control such indentation using options lisp-indent-offset and lisp-body-indent, option lisp-indent-function, or symbol property lisp-indent-function. One possible value for option lisp-indent-function is the value of common-lisp-indent-function. http://www.gnu.org/software/emacs/manual/html_node/emacs/Lisp-Indent.html http://www.gnu.org/software/emacs/manual/html_node/emacs/Program-Indent.html

M-x sql-sqlite

SQL mode is used to edit SQLite source code blocks.

two variants: sql and sqlite

there is package in MELPA: ob-sql-mode - SQL code blocks evaluated by sql-mode

sql-mode

• (yaml . t) ;; llhotka/ob-yaml
• flymake-yamllint ;; require dev-util/yamllint (based on python dev-python/pyyaml
• flymake-yaml ;; require Psych or Syck (Ruby 1.8/1.9 standard library) dev-ruby/psych and flymake-easy emacs package.

flymake-goto-next-error’ and ‘flymake-goto-prev-error

https://github.com/susam/emacs4cl - tiny .emacs file to set up Emacs quickly

• emerge app-text/aspell - English and flycheck-aspell Emacs package
• C-M-i Complete the word before point based on the spelling dictionary (ispell-complete-word).
• M-x ispell-change-dictionary RET dict RET

USE="l10n_en l10n_ru" emerge app-text/aspell

aspell dicts # available dictionaries

(add-to-list 'ispell-skip-region-alist '(":\\(PROPERTIES\\|LOGBOOK\\):" . ":END:"))
(add-to-list 'ispell-skip-region-alist '("#\\+BEGIN_SRC" . "#\\+END_SRC"))
(require 'flyspell)
(add-hook 'text-mode-hook 'flyspell-mode)
(add-hook 'org-mode-hook 'flyspell-mode)
(define-key flyspell-mode-map (kbd "C-.") 'helm-flyspell-correct)
(setq-default ispell-program-name "aspell")

• emerge app-text/hunspell

link https://hunspell.github.io/

• https://emacs.readthedocs.io/en/latest/writing_in_emacs.html
• https://www.gnu.org/software/emacs/manual/html_node/emacs/Spelling.html

http://xahlee.info/emacs/emacs/xmsi-math-symbols-input.html

install:

• copy https://github.com/DiamondBond/xah-math-input to "~/.emacs.d/contrib/lisp/"
• .emacs: (add-to-list 'load-path "~/.emacs.d/contrib/lisp/")

• http://ergoemacs.org/emacs/xmsi-math-symbols-input.html
• ;-- mode: Org; mode: xah-math-input; fill-column: 100;--

Type “inf”, then press 【Shift+Space】 `xah-math-input-change-to-symbol', then it becomes “∞”.

For the complete up-to-date list: Alt+x xah-math-input-list-math-symbols

inf ∞ empty,es ∅ +- ± forall ∀ exist ∃ isin ∈ notin ∉ ni ∋ sum ∑ int ∫ cap ∩ union,cup ∪ sim ∼ asymp ≈ equiv ≡ ne ≠ nsub ⊄ sube ⊆ supe ⊇ sub ⊂ sup ⊃ D Δ O Ω q θ nabla ∇ part ∂ rt √ rp ∘ cp ⊕ ct ⊗

Ancient Greek:

• a - α; b-β; g-γ; d-δ; e-ε; z-ζ; h-η; q-θ; i-ι; k-κ; l-λ; m-μ; n-ν; x-ξ; p-π; r-ρ; s-σ; t-τ; v-υ; f-φ; c-χ; y-ψ; o-ω
• A-Α; B-Β; G-Γ; D-Δ; E-Ε; Z-Ζ; H-Η; Q-Θ; I-Ι; K-Κ; L-Λ; M-Μ; N-Ν; X-Ξ; P-Π; R-Ρ; S-Σ; T-Τ; V-Υ; F-Φ; C-Χ; Y-Ψ; O-Ω;

and https://github.com/xahlee/xah-math-input/blob/master/xah-math-input.el

install from MELPA: Alt+x list-packages

Start math completion by typing the prefix \ key.

• math latex tags company-math-symbols-latex
• math unicode symbols company-math-symbols-unicode
• latex commands company-latex-commands

• C-x d M-x dired
• C-x C-j M-x dired-jump - Jump to Dired buffer corresponding to current buffer.

C-x C-f - ?

Mark:

• h help
• m dired-mark
• % m mark with regex
• u/U unmark/Unmark all marked
• * Mark all executable file
• @ Mark all symbolic links
• / Mark with `*' all files which are actually directories
• % d regexp RET - mark with regex by name
• t invert selection

Delete:

• d mark for deletion
• x Delete the files that are flagged for deletion.

Visit:

• e/f/RET dired-find-file
• v view-mode and q to close
• f/o/C-o visit in other window/dont switch
• a visit and kill current buffer
• & open in any program
• W open in default program

Navigation:

• ^ dired-up-directory
• > next directory
• < preview directory
• SPC moves the cursor down one item.
• ( dired-hide-details-mode

Commands:

• c compress to (TODO)
• shift+c copy file - dired-do-copy
• shift+r rename/move - dired-do-rename
• shuft+d delete - dired-do-delete
• + dired-create-directory
• shift+z Compress/decompress the file by gzip
• ! shell command on file
• g Update the entire contents of the Dired buffer
• l Update the specified files

Submodes:

• C-x C-q (dired-toggle-read-only) - wdired
  • SPC - change permission

not defined:

• b z F K @ [ { ; \ | , / `
• r E J V ) ] } ' "

Open:

BKSP moves the cursor up one item.

g rereads the directory. RET opens the item in the current window. o (small O) opens the item in the other window.

Use C-h m or M-x describe-mode to get some help.

Mark the files with m or unmark with u. Press R. Enter the destination directory. Press RET.

1. in .emacs: (setq dired-dwim-target t)
2. C-x 3 - to open other window
3. m - mark files
4. shift+c - copy; shift+r - move

TRAMP stands for “Transparent Remote (file) Access, Multiple Protocol”.

• /ssh:user@host:/path/to/file
• /sudo:localhost:/path/to/file # as root
• /sftp:user@host:/path/to/file
• /sshfs:user@host:/path/to/file.
• /adb::/path/to/file # android
• /ssh:bird@bastion|ssh:you@remotehost:/path RET
• /ssh:daniel@melancholia#42:.emacs # port 42
• /ssh:[::1]:.emacs # ipv6

steps:

1. C-x C-f to initiate find-file, enter part of the TRAMP file name, then hit TAB for completion.
2. TRAMP invokes connection to remote host
3. Upon successful login, if TRAMP recognizes the shell prompt from the remote host, invokes /bin/sh.
4. executes cd and ls commands to find which files exist on the remote host. TRAMP checks if a file or directory is writable with test.
5. TRAMP transfers the file contents from the remote host.
6. Edit, modify, change the buffer contents as normal, and then save the buffer with C-x C-s.

/:/tmp/foo*bar # ‘/:’ can also prevent ‘~’ and '*' from being treated as a special character

I use dired in a "two pane" style (two windows with dired buffers and (setq dired-dwim-target t)) in a separate frame on it's own workspace. I use arrow-keys for navigation (see key-bindings below) this way dired buffers accumulate quickly, I use helm to switch between them. Never felt the need for something like bookmarks.

I also use:

dired-async.el

trashed

dired-subtree

dired-du

dired-filter

dired-rifle

Here is the dired related part of my .emacs

(defun always-t-p (args) "always returns true" (interactive "P") t ) (setq dired-isearch-filenames 'dwim dired-listing-switches "-alhv –time-style=+%F –group-directories-first" dired-no-confirm t ;don't list marked files when performing action, still asks for confirmation dired-deletion-confirmer 'always-t-p ;don't ask for confirmation trashed-action-confirmer 'always-t-p dired-clean-confirm-killing-deleted-buffers nil ;kill dired-buffer when corresponding dir is deleted delete-by-moving-to-trash t ;use systems trash dired-recursive-deletes 'always ;delete dirs even if non-empty dired-dwim-target t ;copy/move to other side dired-filter-revert 'always wdired-allow-to-change-permissions t dired-du-size-format t )

(add-hook 'dired-mode-hook (setq display-line-numbers 'relative)))

;; some function-definitions and keybindings for dired (defun dired-toggle-details-and-du-mode () (interactive) """toggles dired-du-mode together with dired-hide-details-mode""" (if dired-hide-details-mode (progn (dired-hide-details-mode 0) (dired-du-mode 1)) (progn (dired-hide-details-mode 1) (dired-du-mode -1)))) (define-key dired-mode-map (kbd ".") 'dired-hide-dotfiles-mode) (define-key dired-mode-map (kbd "r") 'dired-rifle) (define-key dired-mode-map (kbd "b") 'dired-subtree-toggle) (define-key dired-mode-map (kbd "i") 'dired-subtree-toggle) (define-key dired-mode-map (kbd ";") 'dired-subtree-down) (define-key dired-mode-map (kbd "'") 'dired-subtree-up) (define-key dired-mode-map (kbd "\"") 'dired-subtree-narrow) (define-key dired-mode-map (kbd "f") 'dired-filter-mode) (define-key dired-mode-map (kbd "z") 'dired-du-mode) (define-key dired-mode-map (kbd ",") 'trashed) (define-key dired-mode-map (kbd "l") 'dired) (define-key dired-mode-map (kbd "\\") dired-filter-mark-map) (define-key dired-mode-map (kbd "]") 'dired-rsync) (define-key dired-mode-map (kbd "<tab>") 'other-window) (define-key dired-mode-map (kbd "<right>") 'dired-find-alternate-file) (define-key dired-mode-map (kbd "<left>") 'dired-up-directory) (define-key dired-mode-map (kbd ")") 'dired-toggle-details-and-du-mode) (define-key trashed-mode-map (kbd "<tab>") 'other-window)

M-x image-dired - show image thumbnails

• dired-hide-dotfiles https://github.com/mattiasb/dired-hide-dotfiles
• Dirvish https://github.com/alexluigit/dirvish
• https://gitlab.com/xuhdev/dired-icon

Filemanager not based on Dired

• neotree -
• https://github.com/emacs-eaf/eaf-file-manager

• mark files with #'dired-mark
• for sync call: press ! #'dired-do-shell-command and for async call: & '#dired-do-async-shell-command
• type name of command to execute command for each file separately.
• if you want to execute file by concatenating them to one command type: "command *"

https://lucidmanager.org/productivity/manage-files-with-emacs/

• C-c C-n/p next prev heading
• C-c C-f/b next prev same level heading
• C-c C-u Backward to higher level heading.
• C-c C-j search in headers!
• M-{ org-backward-element
• M-} org-forward-element

• C-c ' special editor: src block, tables, LaTeX, footnote, timestamp
• C-c Tab narrow header
• C-u Tab harrow all headers
• C-u C-u Tab startup headers visibility

C-c C-a

C-q TAB insert TAB C-u 4 C-q insert 4 TABs

• asd
• asd
• asd
• asd
• asd
• df

:VISIBILITY: all

• property, may be: folded, children, content, and all
• (custom-set-variables '(org-startup-folded t) - every headers will start folded

• TAB S-TAB hide show
• C-c Tab hide current header
• C-c C-npfbu navigate by headers

M-S-Left/Right PROMOTE SUBTREE

C-RET inser HEADER after all text C-c * text to header M-RET new list item M-S-RET TODO S-righ, left or C-c C-t TODO, DONE M(-S)-right lieft up down move and indentation

C-x n s/w редактировать только один уровень

C-c / C-c C-c. sparse tree

ordered lists: 1.1) unordired -,+,* description list

asd

asd

[ ] (no term)

sss

M-RET insert new S-left,right cycle bullets -,+,*,1 (C-c -) M-left,right Increase the indentation of an item M-S-RIGHT Increase the indentation of an item with children C-C Toggle check box

C-c ^ sort

C-c - Convert lines to lists

C-x r N and C-u C-x r N - emacs list

• M-S-RET create at list - cursor at the end of the end of the list item
• C-c C-c togle
• C-c C-x C-r toggle-radio-button - switch others ff

[/]		add parts
[%]		add percents

ex:

• [-] percet [1/2] [50%]
  • [X] 1
  • [ ] 2

C-c C-x p Set a property. C-c C-c d Remove

see headers.

• C-c . ins. for agenda
• C-c ! ins. inactive
• S-left/right by one day
• M-S-LEFT / M-S-RIGHT move selection 1 month backward/forward
• < / > scroll calendar by 1 month
• C-v / M-v scroll calendar by 3 months
• M-S-UP / M-S-DOWN scroll calendar by 1 year
• S-up/down change at cursor

http://orgmode.org/manual/Built_002din-table-editor.html

C-c | create table 5x2 C-c autoaligh all table

M-a/e move back forward at cells M-arrays move line or row in table Tab - autocomplition

• C-c C-l edit link
• C-c C-x C-v show hide image inline
• C-c C-o open link
• C-u C-u C-c C-o open not in emacs
• M-x org-toggle-link-display

[[LINK][DESCRIPTION] ] [[ ./a.img - inline image ends with \]\]

Local links (same buffer) :

1. [[Target local link to header
2. [[My Target local link to just string #+NAME: My Target
3. [[./papers/last.pdf’]

external links(sepparate buffer)

1. projects.html:: name - go had "* name" OR to <<name >>
2. papers/last.pdf
3. sometextfile:: NNN (jump to line number)
4. ‘projects.html:: *task title’ (headline search)
5. ‘projects.html:: #custom-id’ (headline search)
6. ls
7. org-store-link
8. org#External
9. https://orgmode.org/
10. java:Active

org#External links

Internal links.

• coderef:
• custom-id:
• fuzzy:
• radio:

example Mylink to TragetEx

STARTUP(org-startup-with-inline-images) - inlineimages or noinlineimages

• C-c C-x C-v (org-toggle-inline-images)

example:

[[path to image]

configuration:

• (setq org-startup-with-inline-images "inlineimages")
• (setq org-mode-actual-width)
  • t - When non-nil, use the actual width of images when inlining them
  • 300 - When set to a number, use imagemagick (when available) to set the image’s width to this value.
  • '(300 200) - use #+ATTR.* keyword if it matches a width specification like #+ATTR_HTML: :width 300px or this number
  • nil - use #+ATTR.* or dont resize

M-x

• org-redisplay-inline-images
• org-display-inline-images
• org-toggle-inline-images
• org-remove-inline-images

Exclude tree and its subtrees:

• C-c C-q set tag "noexport"

exclude tags: EXCLUDE_TAGS - default value "noexport"

• C-c C-, (org-insert-structure-template) - #+ ….

https://orgmode.org/org.html#LaTeX-header-and-sectioning https://en.wikibooks.org/wiki/LaTeX/Internationalization для русского:

статья:

статья: [10pt,a4paper,twocolumn]{article} широко:

очень широко:

\[ a=+\sqrt{2} \] or \[ a=-\sqrt{2} \]

C-c C-x C-a archive subtree.

(setq org-startup-with-inline-images t) or:

[[]

• C-c ? learn about field
• |- start pattern
• :=vmean($2..$3) calculate the mean for fields from the second ($2) to the third ($3) field in this row
• C-c C-c calc table
• #+TBLFM line contains all the formulas for the table above, and you should be careful while editing it manually.
• C-u C-c * (or C-c C-c if you're on the #+TBLFM) reapplying all formulas
• C-c = editing column formulas
• C-u C-c = field formulas
• C-c ' edit formulas more interactively in a dedicated buffer
• S-arrows swap columns
• C-c { Turn the formulas debugger on

• M-x org-indent-mode
• (setq org-startup-indented t)

use '(org-hide-leading-stars t) inside

Diagrams https://orgmode.org/worg/org-tutorials/org-dot-diagrams.html mind map 3yo https://github.com/the-ted/org-mind-map

• ! add timestemp without asking
• @ ask whether to add timestamp or not
• /! when switching back from it add timestamp to TODO word staying before
• computer @phone - at most one of them should be selected

keys

• C-c C-q (org-set-tags-command)
• C-c C-c (org-set-tags-command)

#-- org-todo-keyword-faces: (("TODO" . org-warning) ("FAILED" . "red") ("DONE" . "green")); --

-- org-todo-keyword-faces: (("TODO" . "red") ("WAIT" . "orange") ("DONE" . "green")); --

Colours for TODO:

(setq org-todo-keyword-faces
  '(("TODO" . org-warning)
     ("STARTED" . "red")
     ("WAITING" . "yellow")
     ;; ("CANCELED" . (:foreground "cyan" :weight bold))
     ("CANCELED" . "cyan")
     ))

https://orgmode.org/manual/Tracking-TODO-state-changes.html

• C-c C-e # - inserts a template containing all the options:

Disabling underscore-to-subscript

• #+OPTIONS: ^:nil
• (setq org-export-with-sub-superscripts nil)

to activate:

• M-x customize-variable <Ret> org-export-backends <Ret>
• C-c C-e m m (org-md-export-to-markdown) Export to a text file with Markdown syntax
• C-c C-e m M (org-md-export-as-markdown) Export to a temporary buffer. Does not create a file.
• C-c C-e m o Export as a text file with Markdown syntax, then open it.
• supported export formats: https://orgmode.org/worg/exporters/ox-overview.html

#!/bin/sh

for filename in $(find . -maxdepth 1 -type f \
                       -not -name '*.html' -not -name '.nojekyll' \
                       -not -name '*.md' -not -name '*.png' -not -name 'export.sh' \
                       -not -name '.*.sh'); do
    echo "put ${filename}";
    emacs "${filename}" --eval "(progn (org-md-export-to-markdown) (save-buffers-kill-emacs))"
done

1. sudo apt install texlive-full
2. Ctrl+C, Ctrl+E, #
3. add lines at the end:
   • #+LaTeX_CLASS: beamer
   • #+LaTeX_CLASS_OPTIONS: [bigger]
4. export your slide as a Beamer presentation(pdf):
   • Ctrl+C, Ctrle+E, Shift+O

will not be exported:

• C-x ; - org-toggle-comment
• any lines strted with #

• date: <YYYY-MM-DD DAY>
• timestamp: <YYYY-MM-DD DAY HH:MM>
  • 2022-08-02 Tue 12:05
• time range: <YYYY-MM-DD DAY HH:MM-HH:MM>
• <2005-10-01 Sat +1w> - every Wednesday
• <2005-10-01 Sat +1m -3d> - repeater and a special warning period
• ​ <%%(diary-float t 4 2)> Diary-style sexp entries
• <2004-08-23 Mon>–<2004-08-26 Thu> - Time/Date range
• [2004-08-23 Mon] - inactive timestamp
• DEADLINE: <2008-02-10 Sun ++1w> - Marking this DONE shifts the date by at least one week, but also by as many weeks as it takes to get this date into the future.
• DEADLINE: <2005-11-01 Tue .+1m> - Marking this DONE will shift the date to one month after today.

• C-c < org-date-from-calendar insert current <>
• C-c . org-time-stamp select date <>
• C-c ! org-time-stamp-inactive select date []
• C-c C-c fix timestamp

timer:

• C-c C-x , org-timer-pause-or-continue
• C-c C-x - org-timer-item
• C-c C-x . org-timer Insert current timer value after start
• C-c C-x 0 org-timer-start Start or reset the relative timer.
• C-c C-x ; org-timer-set-timer how much timer set? when time left it try to use dbus
• C-c C-x _ org-timer-stop
• C-c C-y org-evaluate-time-range

https://orgmode.org/manual/Timers.html

https://github.com/grafov/russian-holidays

• https://orgmode.org/guide/Agenda-Commands.html
• https://orgmode.org/worg/org-configs/org-customization-guide.html
• http://www.emacslife.com/baby-steps-org.html
• http://pragmaticemacs.com/emacs/org-mode-basics-vii-a-todo-list-with-schedules-and-deadlines/
• http://www.cachestocaches.com/2016/9/my-workflow-org-agenda/
• https://www.gnu.org/software/emacs/manual/html_node/emacs/Holiday-Customizing.html
• https://orgmode.org/worg/org-faq.html
• https://alphaalgorithms.github.io/2019/05/18/date-and-time-in-emacs/

export

• iCalendar export https://orgmode.org/manual/Exporting-Agenda-Views.html
• perl https://orgmode.org/manual/Extracting-Agenda-Information.html

• M-x appt-activate
• M-x appt-add add reminder without diary and todo files
• appt-check - internal func which checks diary and decide show message or not

• start time = appt-message-warning-time or "warntime" in diary
• interval = appt-display-interval

;; -- time
;; appt-display-message interval - minutes
(setq appt-display-interval 3)
;; before an appointment that the warning begins - minutes
;; can be overriden in diary with "wanrntime 30" - minutes
(setq appt-message-warning-time 12)
;; display window appointment text after time record duration - seconds
(setq appt-display-duration 10
;; enable audio
(setq appt-audible nil)
;; emacs print diary , I guess controlled by appt-display-interval
(setq appt-display-diary t)
;; echo, nil
(setq appt-display-format 'window)

navigation

• C-a/e - begin/end of week
• C-b/f - day
• C-n/p - next/previous week
• . today
• g d go to date
• o go to month

mark

• m/u mark/unmark

diary .emacs.d/diary

• s show all entries
• i d insert entry
• i b insert block
• i c insert cycle
• i m/w/y insert monthly/weekly/yearly
• D other diary file

other

• M-= calendar-count-days-region
• M-x appt-activate reminder

it sets up `font-lock-add-keywords'

option curl example

• :proxy -x :proxy localhost:8118
• :noproxy –noproxy * N/A
• :cookie-jar –cookie-jar :cookie-jar username
• :cookie –cookie :cookie username
• :max-time –max-time default is 10
• :user –user :user admin:passwd
• :pretty N/A :pretty use Content-Type, to overwrite :pretty json
• :select N/A :select path path will be passed to jq for json or pup for html or xmlstarlet for xml
• :get-header N/A :get-header X-Subject-Token
• :curl N/A :curl –insecure –compressed additional arguments for curl
• :resolve –resolve :resolve example.com:80:127.0.0.1,example.com:443:127.0.0.1

1. select file listed in the "Unstaged changes" and/or "Staged changes" sections. They are prefixed with the word "unmerged", which in this context essentially is a synonym for "unresolved".
2. smerge-mode -
   • C-c ^ C-h for keys
   • C-c ^ n smerge-next
   • C-c ^ m choose head
   • C-c ^ o keep the version that follows "|||||||"
   • C-c ^ n smerge-next - to move to the next conflicting area in the same file.
   • C-c ^ p smerge-prev
   • C-c ^ RET smerge-keep-current
   • C-c ^ l smerge-keep-lower
   • C-c ^ m smerge-keep-upper
   • C-c ^ a smerge-keep-all

To resolve conflicts in a file using Ediff press e while point is on such a file in the status buffer.

• Magit really is “Git at the speed of thought” https://www.youtube.com/watch?v=INTu30BHZGk
• https://www.masteringemacs.org/article/introduction-magit-emacs-mode-git

Requirement already satisfied: Flask>=0.10.1 in ./.local/lib/python3.8/site-packages (from grip==4.6.1->-r req_grip.txt (line 1)) (1.1.4) Requirement already satisfied: Markdown>=2.5.1 in ./.local/lib/python3.8/site-packages (from grip==4.6.1->-r req_grip.txt (line 1)) (3.3.4) Requirement already satisfied: Pygments>=1.6 in ./.local/lib/python3.8/site-packages (from grip==4.6.1->-r req_grip.txt (line 1)) (2.8.1) Requirement already satisfied: Werkzeug>=0.7 in ./.local/lib/python3.8/site-packages (from grip==4.6.1->-r req_grip.txt (line 1)) (1.0.1) Requirement already satisfied: docopt>=0.4.0 in usr/lib/python3/dist-packages (from grip==4.6.1->-r req_grip.txt (line 1)) (0.6.2) Requirement already satisfied: requests>=2.4.1 in ..local/lib/python3.8/site-packages (from grip==4.6.1->-r req_grip.txt (line 1)) (2.25.1) Requirement already satisfied: Jinja2<3.0,>=2.10.1 in ./.local/lib/python3.8/site-packages (from Flask>=0.10.1->grip==4.6.1->-r req_grip.txt (line 1)) (2.11.3) Requirement already satisfied: click<8.0,>=5.1 in ./.local/lib/python3.8/site-packages (from Flask>=0.10.1->grip==4.6.1->-r req_grip.txt (line 1)) (7.1.2) Requirement already satisfied: itsdangerous<2.0,>=0.24 in ./.local/lib/python3.8/site-packages (from Flask>=0.10.1->grip==4.6.1->-r req_grip.txt (line 1)) (1.1.0) Requirement already satisfied: idna<3,>=2.5 in ./.local/lib/python3.8/site-packages (from requests>=2.4.1->grip==4.6.1->-r req_grip.txt (line 1)) (2.10) Requirement already satisfied: urllib3<1.27,>=1.21.1 in ./.local/lib/python3.8/site-packages (from requests>=2.4.1->grip==4.6.1->-r req_grip.txt (line 1)) (1.25.11) Requirement already satisfied: chardet<5,>=3.0.2 in usr/lib/python3/dist-packages (from requests>=2.4.1->grip==4.6.1->-r req_grip.txt (line 1)) (3.0.4) Requirement already satisfied: certifi>=2017.4.17 in ..local/lib/python3.8/site-packages (from requests>=2.4.1->grip==4.6.1->-r req_grip.txt (line 1)) (2020.12.5) Requirement already satisfied: MarkupSafe>=0.23 in ./.local/lib/python3.8/site-packages (from Jinja2<3.0,>=2.10.1->Flask>=0.10.1->grip==4.6.1->-r req_grip.txt (line 1)) (1.1.1)

ditta to convert to image from org src blocks

• C-c C-c artist-mode-off Exit artist mode.
• C-c C-r draw rectangle
• M-x describe-mode - to get help for artistic mode

narrowing is usefull:

• C-x n e # narrow to an element
• C-x n w # widen back to the whole page

steps:

1. narrow to
   • C-x n b org-narrow-to-block
   • C-x n e org-narrow-to-element
   • C-x n s org-narrow-to-subtree
2. select type of line: M-x artistic-select-op-line
3. type RET(enter) to start or select direction of line
4. type RET(enter) to finish or chararter to insert in direction
5. C-u RET to stop drawing
6. < or > to toggle arrows for last line
7. C-x n w widen

useful:

• artist-select-op-poly-line (C-c C-a p) - several peaces line
• artist-select-op-straight-poly-line (C-c C-a P) - more beautiful several peaces line
• artist-select-op-rectangle (C-c C-a r)
• artist-select-op-ellipse (C-c C-a e)

                     C-c `
                      \   C-c ^ C-c '
                       \   |    /
                        \  |   /
                         \ |  /
                          \| /
           C-c < ----------/-------------C-c >
                          /|\
                         / | \
                        /  |  \
                       /   |   \
                      /    |    C-c \
                     /   C-c .
                 C-c /

• C-c C-a f artist-select-op-flood-fill Select flood fill as the operation.
• C-c C-a C-k artist-select-op-cut-rectangle Draw a rectangle around an area, then cut.
• C-c C-a M-w artist-select-op-copy-rectangle Draw a rectangle around an area, then copy.
• C-c C-a C-y artist-select-op-paste Paste what you copied wherever you click the mouse.
• C-c C-a v artist-select-op-vaporize-line Erase a line you select (literal line; not a line in the file).
• C-c C-a C-d artist-select-op-erase-char Set operation to erase (use the mouse as your eraser).
• C-c C-a S artist-select-op-spray-can Set operation to spray can.
• C-c C-a e artist-select-op-ellipse Draw ellipses.
• C-c C-a p artist-select-op-poly-line Draws poly-lines
• C-c C-a r artist-select-op-rectangle Draw rectangles.
• C-c C-a l artist-select-op-line Draw lines.
• C-c C-a C-r artist-toggle-rubber-banding If on (the default), show shape while stretching; if not, mark end-points.
• C-c C-a C-l artist-select-line-char Select character to use when drawing lines (- is the default).
• C-c C-a C-f artist-select-fill-char Select character to fill shapes with (Space is the default).

• create testing function that open new buffer and write lines
• replace - with _ in artist-select-op-line

• https://www.lysator.liu.se/~tab/artist/
• http://dinasis.com/oliver/Learning_GNU_Emacs/gnu3-CHP-7-SECT-6.html

• Strings are inserted in the buffer.
• The n symbol causes the insertion of a new line character
• The > symbol tells Emacs to indent the current line according to the rules of the major mode of the buffer.
• The p forms cause Tempo to ask the user for values to insert. Note that you need to set tempo-interative to t.

https://www.n16f.net/blog/templating-in-emacs-with-tempo/

Skeletons are feature, where various atoms directly perform either actions on the current buffer or rudimentary flow control mechanisms.

two ways:

• use a key binding for every skeleton command
• define an abbreviation that will expand into the skeleton (abbrev-mode must be activated)

steps:

1. define skeleton - (difine-skeleton ) lisp atom
2. define abbreviation
3. activate abbreviation (idk why but they work with disabled mode)
4. type abbreviation and expand it with key C-x '

Yasnippet - another third-party library for templates

may be saved to ~/.emacs.d/abbrev_defs

Abbrevs expansion only works for last word unles you set mark with M-'. So you should insert space before abbrev.

Dynamic Abbrev – zero relation to Abbrevs.

Hippie Expand - looks at the word before point and tries expand-abbrev, dabbrev-expand or fixed list.

C-h v hippie-expand-try-functions-list

• https://www.maketecheasier.com/use-email-within-emacs/
  • Offlineimap is a helper program that fetches your email from a remote server and saves it
  • Notmuch, application that tags and displays mail.

• mu and mu4e

  • mu is a simple command line tool for searching through emails

  search features within mu. .

  • mu4e, which offers an emacs interface to the mu
  • http://cachestocaches.com/2017/3/complete-guide-email-emacs-using-mu-and-/
  • https://blog.leonardotamiano.xyz/posts/mu4e-setup/

• mbsync and offlineimap, review https://skeptric.com/emacs-email/

  isync + notmuch + emacs https://haluk.github.io/posts-output/2020-09-11-emacs/

• https://www.tomica.net/blog/2020/03/replacing-offlineimap-with-mbsync-isync/
• https://jonathanchu.is/posts/emacs-notmuch-isync-msmtp-setup/

offlineimap deps:

• https://github.com/jazzband/imaplib2/

notmuch - indexer and also emacs-based interfece to notmuch indexer

fetchmail, offlineimap, or mbsync, to receive the messages

1. emerge net-mail/isync
2. USE="emacs doc" emerge net-mail/notmuchk
3. useradd -m email
4. /etc/sudoers.d/email see 58.2
5. chown email:current_user /home/email
6. chmod g+rwxs /home/email see ref::sudoers.d/email
7. configure isync .mbsyncrc. see nix#MissingReference
8. # mkdir -P home/email.mail/yourmaildir
9. # chown -R email:user home/email.mail
10. # find home/email.mail/ -type d -exec chmod -R g+rxs {} \;
11. # find home/email.mail/ -type f -exec chmod g+rw {} \;
12. mbsync gmail or mbsync -aV
13. notmuch setup # create home/email.notmuch-config
14. notmuch new # create a database that indexes all of your mail
15. cp home/email.notmuch-config home/user
16. M-x package-install smtpmail-multi
17. configure smtpmail-multi in .emacs, create "~/.authinfo" or "~/.authinfo.gpg" or "~/.netrc"
18. $ emacs ; M-x notmuch
19. email retriving: # mbsync -aV && notmuch new && notmuch tag –input=my.notmuch && find .mail/ -type f -exec chmod g+rw {} \;

download new emails:

• proxychains mbsync -aV ; notmuch new ; notmuch tag –input=my.notmuch
• find home/email.mail/ -type f -exec chmod g+rw {} \;

#!/bin/sh
# sudo -u email
# proxychains mbsync -aV
cd /home/email/
echo sudo -u email mbsync -c /home/email/.mbsyncrc -aV
sudo -u email mbsync -c /home/email/.mbsyncrc -aV
echo #--------------------------------------------------------
echo sudo /usr/local/bin/email_notmuch_perm.sh
sudo /usr/local/bin/email_notmuch_perm.sh
echo sudo -u email notmuch new
sudo -u email notmuch new
echo #--------------------------------------------------------
echo sudo -u email notmuch tag --input=/home/email/my.notmuch
sudo -u email notmuch tag --input=/home/email/my.notmuch
echo #--------------------------------------------------------
# . prev.sh # root required

+saved -- folder:SAVED
+sent -- folder:Sent
+spam -- folder:Spam
+bks -- folder:bks
+book -- folder:book
+pol -- folder:pol
# bks move from inbox to bks
+bks -inbox -- 'from:"/.*@bcs[.]ru/"'
# remove spam,draft,deleted,sent from inbox
-inbox -- tag:spam or tag:draft or tag:deleted or tag:sent
# remove spam,draft,deleted,sent from unread
-unread -- tag:spam or tag:draft or tag:deleted or tag:sent

#!/bin/sh
chown -R email:u /home/email/.mail
find /home/email/.mail/ -type d -exec chmod g+rxs {} \;
# not working if group is not owned
find /home/email/.mail/ -type f -exec chmod g+rw {} \; # root required

u ALL=(email) NOPASSWD: ALL
email ALL=(root) NOPASSWD: /usr/local/bin/email_notmuch_perm.sh
u ALL=(root) NOPASSWD: /usr/local/bin/email_notmuch_perm.sh

1. default C-x m compose-mail Message.el mode
2. Message[Notmuch] mode defined in notmuch-mua.el

remplace default message mode with notmuch message mode:

(setq mail-user-agent 'notmuch-user-agent)

(add-hook 'message-mode-hook #'turn-on-orgtbl)
(global-set-key (kbd "C-c f") 'org-footnote-action)

additional packages

• M-x package-install RET orgalist RET - Org-like lists in non-Org buffers
• M-x package-install RET outshine RET - bring the look & feel of Org-mode to the (GNUEmacs) world outside of the Org major-mode.

Two variables to choose method:

1. setq send-mail-function
   • 'mailclient-send-it - external client
   • 'smtpmail-send-it - smtp emacs
   • 'sendmail-query-once - ask which to use
2. message-send-mail-function
   • MH Mail System
   • Gmail

smtpmail-multi

• (setq message-send-mail-function 'smtpmail-multi-send-it)
• https://firminmartin.com/en/posts/2020/10/read_email_in_emacs_with_notmuch/

• set-input-method("chinese-sisheng" t)
• activate-input-method("chinese-sisheng")
• (quail-use-package "chinese-sisheng" nil)
  • (quail-select-package "chinese-sisheng")
  • quail-activate()

• rectangles:
  1. select lines 'C-x space'
  2. copy lines C/M-w
  3. M-x yank-rectangle or ‘C-x r y’
• https://www.gnu.org/software/emacs/manual/html_node/emacs/Text-Based-Tables.html

Kill a rectangle: kill-rectangle ‘C-x r k’ Yank the last killed rectangle: yank-rectangle ‘C-x r y’ Toggle Rectangle Mark mode C-x SPC

M-x scroll-all-mode

• (setq linum-format " %d ")
• (global-linum-mode t)

1. M-x occur that select line by regex
2. rectangles C-x r
3. M-% search and replace

chat

• M-g ! telega-chatbuf-next-unread-reaction
• M-g m/@ telega-chatbuf-next-unread-mention
• i get info at pointer
• > telega-chatbuf-read-all
• < telega-chatbuf-history-beginning
• M-g r telega-chatbuf-read-all
• M-g P/^ telega-chatbuf-goto-pinned-message
• p/n - preview/next message
• C-c C-f telega-chatbuf-attach-media
• C-c C-a telega-chatbuf-attach
• C-c /") 'telega-chatbuf-filter
• M-p M-k telega-chatbuf-edit-prev
• M-n 'telega-chatbuf-edit-next
• telega-chatbuf-cancel-aux
  • C-c C-k C-c C-p
  • C-M-c
• C-c /") 'telega-chatbuf-filter
• C-x 4 0 kill-buffer-and-window

• telega.el - (defun telega (&optional arg) - entry
• telega-core.el - Variables and runtime goodies for telega
• telega-root.el
• telega-chat.el
• telega-server.el - Interface to `telega-server' process

Message format: telega-chat.el:

• (defun telega-chatbuf–insert-messages (messages how)

is fully open source, all code is available on GitHub. https://github.com/tdlib/td

• https://core.telegram.org/tdlib

Full dependencies: https://github.com/tdlib/td#dependencies

For stable version of Telega.el you should do 'git checkout v1.8.0' after 'git clone' https://github.com/tdlib/td

Steps:

• # mkdir build
• # cd build
• # cmake -DCMAKE_BUILD_TYPE=Release ..
• # cmake –build . (for newest version cmake –build . –target tdjson)
• # make install
• # xargs rm < install_manifest.txt # to remove

It should install itself to usr/local/include and library itself into /usr/local/lib and *.pc files to /usr/local/lib/pkgconfig

Zaicev: Do $ make install in the telega.el/server/ dir, it will install telega-server into ~/.telega/ dir, telega will be able to find it there

Main dependency for server is 65.3 (Full dependencies: https://zevlg.github.io/telega.el/#dependencies)

Steps:

• # ldconfig # it will update symlinks for TDLib
• # export PKG_CONFIG_PATH=/usr/local/lib/pkgconfig/ # path to *.pc installed files of TDLib
• # make
• # make install # just copy "telega-server" to ~/.telega/

Telega looks for "telega-server" executable in PATH environmental variable or in ~/.telega/

Let's configure MELPA repository in Emacs configuration file. (from https://zevlg.github.io/telega.el/#installing-telega-from-melpa)

(add-to-list 'package-archives
           '("melpa-stable" . "https://stable.melpa.org/packages/"))
(add-to-list 'package-pinned-packages '(telega . "melpa-stable"))

Install 'telega' from MELPA repository:

• M-x package-refresh-contents
• M-x package-install telega

You need to specify folders and account names:

(setq telega-accounts
      '(("t1" telega-database-dir "/home/telega/.telega/t1")
        ("t2" telega-database-dir "/home/telega/.telega/t2")))

I have "t1" and "t2" named accounts and created "home/telega.telega/t1" and "home/telega.telega/t1" folders for them.

Now in Emacs: M-x telega RET. It should magically ask you which account to use "t1" or "t2", phone number and activation code for it.

telega-server error: Valid api_id must be provided. Can be obtained at https://my.telegram.org

• Zaicev: Старая телега и новая TDLib. update telega
• check version with: M-x telega-version RET

Perhaps you should add the directory containing `tdjson.pc' to the PKG_CONFIG_PATH environment variable Package 'tdjson', required by 'virtual:world', not found

• export PKG_CONFIG_PATH=/usr/local/lib/pkgconfig/
• or as Zaicev said: "If you intall TDLib into custom prefix (non system-wide), then specify this prefix via LIBS_PREFIX make variable, otherwise pkg-config will be used to detect the prefix."

telega-server: error while loading shared libraries: libtdjson.so.1.8.0: cannot open shared object file: No such file or directory

• Zaicev: $ sudo ldconfig не забудь запустить перед линковкой telega-server, после того как задаунгрейдил TDLib

YouTube Front End | Interface for yt-dlp | mpv control |

Project's Page: https://thanosapollo.org/projects/yeetube Upstream: https://git.thanosapollo.org/yeetube

Dependencies:

• (require 'compat)
• (require 'url)
• (require 'tabulated-list)
• (require 'cl-lib)
• (require 'socks)
• (require 'iimage)
• (require 'yeetube-mpv) - own

'(url-proxy-services '(("socks" . "127.0.0.1:9050")))

• State "TODO" from [2023-04-24 Mon 01:07]

(setq socks-override-functions 1) ;;  Set this before loading the library to make Emacs use Socks for all networking functions.
(setq socks-noproxy '("localhost")) ;; A list of domains to exclude from the proxy
(require 'socks) ;; Finally, load the socks library.
(setq socks-server '("Default server" "127.0.0.1" 1081 5))
(setq socks-noproxy '("127.0.0.1"))
(setq url-gateway-method 'socks)


(setq url-proxy-services
      '(("http"     . "http://proxy.example.com:8080")
        ("https"    . "http://proxy.example.com:8080")
            ("ftp"      . "proxy.example.com:8080")
            ("no_proxy" . "^.*example.com")))

-- test proxy:
(with-current-buffer
    (url-retrieve-synchronously "http://api.ipify.org/")
  (goto-char (point-min))
  (re-search-forward "^$")
  (delete-region (point) (point-min))
  (buffer-string))

(package-refresh-contents)