+* Completion
+** company mode and company-statistics
+#+BEGIN_SRC emacs-lisp :tangle yes :results silent
+ (use-package company
+ :ensure t
+ :diminish company-mode
+ :init (setq company-idle-delay 0.1)
+ (setq company-selection-wrap-around t)
+ :config
+ (define-key company-active-map (kbd "M-n") nil)
+ (define-key company-active-map (kbd "M-p") nil)
+ (define-key company-active-map (kbd "C-n") #'company-select-next)
+ (define-key company-active-map (kbd "C-p") #'company-select-previous)
+ ;; should map both (kbd "TAB") and [tab],https://github.com/company-mode/company-mode/issues/75
+ (define-key company-active-map (kbd "TAB") #'company-complete-selection)
+ (define-key company-active-map [tab] #'company-complete-selection)
+ (global-company-mode)
+ (setq company-global-modes '(not org-mode)))
+
+ (use-package company-statistics
+ :ensure t
+ :config
+ (company-statistics-mode))
+#+END_SRC
+
+** YASnippet
+*** yasnippet
+#+BEGIN_SRC emacs-lisp :tangle yes :results silent
+ (use-package yasnippet
+ :ensure t
+ :defer t
+ :init
+ (add-hook 'prog-mode-hook #'yas-minor-mode)
+ :config
+ (yas-reload-all))
+#+END_SRC
+
+
+** company and yasnippet
+Add yasnippet as the company candidates
+#+BEGIN_SRC emacs-lisp :tangle yes :results silent
+ ;Add yasnippet support for all company backends
+ ;https://github.com/syl20bnr/spacemacs/pull/179
+ (defvar company-mode/enable-yas t
+ "Enable yasnippet for all backends.")
+
+ (defun company-mode/backend-with-yas (backend)
+ (if (or (not company-mode/enable-yas) (and (listp backend) (member 'company-yasnippet backend)))
+ backend
+ (append (if (consp backend) backend (list backend))
+ '(:with company-yasnippet))))
+
+ (setq company-backends (mapcar #'company-mode/backend-with-yas company-backends))
+#+END_SRC
+
+Refer, [[http://emacs.stackexchange.com/questions/7908/how-to-make-yasnippet-and-company-work-nicer][how-to-make-yasnippet-and-company-work-nicer]]
+#+BEGIN_SRC emacs-lisp :tangle yes :results silent
+ (defun check-expansion ()
+ (save-excursion
+ (if (looking-at "\\_>") t
+ (backward-char 1)
+ (if (looking-at "\\.") t
+ (backward-char 1)
+ (if (looking-at "->") t nil)))))
+
+ (defun do-yas-expand ()
+ (let ((yas/fallback-behavior 'return-nil))
+ (yas/expand)))
+
+ (defun tab-indent-or-complete ()
+ (interactive)
+ (cond
+ ((minibufferp)
+ (minibuffer-complete))
+ (t
+ (indent-for-tab-command)
+ (if (or (not yas/minor-mode)
+ (null (do-yas-expand)))
+ (if (check-expansion)
+ (progn
+ (company-manual-begin)
+ (if (null company-candidates)
+ (progn
+ (company-abort)
+ (indent-for-tab-command)))))))))
+
+ (defun tab-complete-or-next-field ()
+ (interactive)
+ (if (or (not yas/minor-mode)
+ (null (do-yas-expand)))
+ (if company-candidates
+ (company-complete-selection)
+ (if (check-expansion)
+ (progn
+ (company-manual-begin)
+ (if (null company-candidates)
+ (progn
+ (company-abort)
+ (yas-next-field))))
+ (yas-next-field)))))
+
+ (defun expand-snippet-or-complete-selection ()
+ (interactive)
+ (if (or (not yas/minor-mode)
+ (null (do-yas-expand))
+ (company-abort))
+ (company-complete-selection)))
+
+ (defun abort-company-or-yas ()
+ (interactive)
+ (if (null company-candidates)
+ (yas-abort-snippet)
+ (company-abort)))
+
+ '
+ ;; (require 'company)
+ ;; (require 'yasnippet)
+
+
+ ;; (global-set-key [tab] 'tab-indent-or-complete)
+ ;; (global-set-key (kbd "TAB") 'tab-indent-or-complete)
+ ;; (global-set-key [(control return)] 'company-complete-common)
+
+ ;; (define-key company-active-map [tab] 'expand-snippet-or-complete-selection)
+ ;; (define-key company-active-map (kbd "TAB") 'expand-snippet-or-complete-selection)
+
+ ;; (define-key yas-minor-mode-map [tab] nil)
+ ;; (define-key yas-minor-mode-map (kbd "TAB") nil)
+
+ ;; (define-key yas-keymap [tab] 'tab-complete-or-next-field)
+ ;; (define-key yas-keymap (kbd "TAB") 'tab-complete-or-next-field)
+ ;; (define-key yas-keymap [(control tab)] 'yas-next-field)
+ ;; (define-key yas-keymap (kbd "C-g") 'abort-company-or-yas)
+#+END_SRC
+
+* Libs
+#+BEGIN_SRC emacs-lisp :tangle yes :results silent
+ (use-package s
+ :ensure t)
+#+END_SRC
+
+* Programming Language
+** Emacs Lisp
+#+BEGIN_SRC emacs-lisp :tangle yes :results silent
+ (use-package color-identifiers-mode
+ :ensure t
+ :init
+ (add-hook 'emacs-lisp-mode-hook 'color-identifiers-mode)
+
+ :diminish color-identifiers-mode)
+
+ (global-prettify-symbols-mode t)
+#+END_SRC
+
+In Lisp Mode, =M-o= is defined, but I use this for global hydra window. So here disable this key
+bindings in =lispy-mode-map= after loaded. see [[http://stackoverflow.com/questions/298048/how-to-handle-conflicting-keybindings][here]]
+#+BEGIN_SRC emacs-lisp :tangle yes :results silent
+ (use-package lispy
+ :ensure t
+ :init
+ (eval-after-load "lispy"
+ `(progn
+ (define-key lispy-mode-map (kbd "M-o") nil)))
+ :config
+ (add-hook 'emacs-lisp-mode-hook (lambda () (lispy-mode 1))))
+#+END_SRC
+
+** Perl
+*** CPerl mode
+[[https://www.emacswiki.org/emacs/CPerlMode][CPerl mode]] has more features than =PerlMode= for perl programming. Alias this to =CPerlMode=
+#+BEGIN_SRC emacs-lisp :tangle yes :results silent
+ (defalias 'perl-mode 'cperl-mode)
+
+ ;; (setq cperl-hairy t)
+ ;; Turns on most of the CPerlMode options
+ (setq cperl-auto-newline t)
+ (setq cperl-highlight-variables-indiscriminately t)
+ ;(setq cperl-indent-level 4)
+ ;(setq cperl-continued-statement-offset 4)
+ (setq cperl-close-paren-offset -4)
+ (setq cperl-indent-parents-as-block t)
+ (setq cperl-tab-always-indent t)
+ ;(setq cperl-brace-offset 0)
+
+ (add-hook 'cperl-mode-hook
+ '(lambda ()
+ (cperl-set-style "C++")))
+
+ (defalias 'perldoc 'cperl-perldoc)
+#+END_SRC
+
+*** Perl template
+Refer [[https://www.emacswiki.org/emacs/AutoInsertMode][AutoInsertMode]] Wiki
+#+BEGIN_SRC emacs-lisp :tangle yes :results silent
+ (eval-after-load 'autoinsert
+ '(define-auto-insert '("\\.pl\\'" . "Perl skeleton")
+ '(
+ "Empty"
+ "#!/usr/bin/perl -w" \n
+ \n
+ "use strict;" > \n \n
+ > _
+ )))
+#+END_SRC
+
+*** Perl Keywords
+#+BEGIN_SRC emacs-lisp :tangle yes :results silent
+ (font-lock-add-keywords 'cperl-mode
+ '(("\\(say\\)" . cperl-nonoverridable-face)
+ ("\\([0-9.]\\)*" . font-lock-constant-face)
+ ("\".*\\(\\\n\\).*\"" . font-lock-constant-face)
+ ("\n" . font-lock-constant-face)
+ ("\\(^#!.*\\)$" . cperl-nonoverridable-face)))
+
+ ;; (font-lock-add-keywords 'Man-mode
+ ;; '(("\\(NAME\\)" . font-lock-function-name-face)))
+
+#+END_SRC
+
+*** Run Perl
+Change the compile-command to set the default command run when call =compile=
+Mapping =s-r= (on Mac, it's =Command + R= to run the script. Here =current-prefix-arg= is set
+to call =compilation= interactively.
+#+BEGIN_SRC emacs-lisp :tangle yes :results silent
+ (defun my-perl-hook ()
+ (progn
+ (setq-local compilation-read-command nil)
+ (set (make-local-variable 'compile-command)
+ (concat "/usr/bin/perl "
+ (if buffer-file-name
+ (shell-quote-argument buffer-file-name))))
+ (local-set-key (kbd "s-r")
+ (lambda ()
+ (interactive)
+ ; (setq current-prefix-arg '(4)) ; C-u
+ (call-interactively 'compile)))))
+
+ (add-hook 'cperl-mode-hook 'my-perl-hook)
+#+END_SRC
+
+** C & C++
+C/C++ ide tools
+1. completion (file name, function name, variable name)
+2. template yasnippet (keywords, if, function)
+3. tags jump
+*** c/c++ style
+#+BEGIN_SRC emacs-lisp :tangle yes :results silent
+ (setq c-default-style "stroustrup"
+ c-basic-offset 4)
+
+ ;; "C-M-j" is my global binding for avy goto line below
+ ;; disable it in c mode
+ (mapcar #'(lambda (map)
+ (define-key map (kbd "C-M-j") nil))
+ (list c-mode-map
+ c++-mode-map
+ objc-mode-map))
+
+ ;; objective c
+ (add-to-list 'auto-mode-alist '("\\.mm\\'" . objc-mode))
+#+END_SRC
+
+*** irony
+**** install irony server
+Install clang, on mac, it has =libclang.dylib=, but no develop headers. Install by =brew=
+#+BEGIN_SRC sh
+ brew install llvm --with-clang
+#+END_SRC
+
+then install irony searver, and =LIBCLANG_LIBRARY= and =LIBCLANG_INCLUDE_DIR= accordingly
+#+BEGIN_SRC emacs-lisp :tangle no :results silent
+ (irony-install-server)
+#+END_SRC
+
+#+BEGIN_SRC sh
+ cmake -DLIBCLANG_LIBRARY\=/usr/local/Cellar/llvm/3.6.2/lib/libclang.dylib \
+ -DLIBCLANG_INCLUDE_DIR=/usr/local/Cellar/llvm/3.6.2/include \
+ -DCMAKE_INSTALL_PREFIX\=/Users/peli3/.emacs.d/irony/ \
+ /Users/peli3/.emacs.d/elpa/irony-20160713.1245/server && cmake --build . --use-stderr --config Release --target install
+#+END_SRC
+
+**** irony config
+irony-mode-hook, copied from [[https://github.com/Sarcasm/irony-mode][irony-mode]] github
+#+BEGIN_SRC emacs-lisp :tangle yes :results silent
+ (use-package irony
+ :ensure t
+ :config
+ (add-hook 'c++-mode-hook 'irony-mode)
+ (add-hook 'c-mode-hook 'irony-mode)
+ (add-hook 'objc-mode-hook 'irony-mode))
+
+ ;; replace the `completion-at-point' and `complete-symbol' bindings in
+ ;; irony-mode's buffers by irony-mode's function
+
+ (defun my-irony-mode-hook ()
+ (define-key irony-mode-map [remap completion-at-point]
+ 'irony-completion-at-point-async)
+ (define-key irony-mode-map [remap complete-symbol]
+ 'irony-completion-at-point-async))
+
+ (add-hook 'irony-mode-hook 'my-irony-mode-hook)
+ (add-hook 'irony-mode-hook 'irony-cdb-autosetup-compile-options)
+
+ (add-hook 'c++-mode-local-vars-hook #'sd/c++-mode-local-vars)
+
+ ;; add C++ completions, because by default c++ file can not complete
+ ;; c++ std functions, another method is create .dir-local.el file, for p
+ ;; for project see irony
+ (defun sd/c++-mode-local-vars ()
+ (setq irony--compile-options
+ '("-std=c++11"
+ "-stdlib=libc++"
+ "-I/usr/include/c++/4.2.1")))
+#+END_SRC
+
+irony-company
+#+BEGIN_SRC emacs-lisp :tangle yes :results silent
+ (use-package company-irony
+ :ensure t)
+
+ (use-package flycheck-irony
+ :ensure t)
+
+ (use-package company-c-headers
+ :ensure t
+ :config
+ (add-to-list 'company-c-headers-path-system "/usr/include/c++/4.2.1/"))
+
+ ;; (with-eval-after-load 'company
+ ;; (add-to-list 'company-backends 'company-irony)
+ ;; (add-to-list 'company-backends 'company-c-headers))
+
+ (with-eval-after-load 'company
+ (push '(company-irony :with company-yasnippet) company-backends)
+ (push '(company-c-headers :with company-yasnippet) company-backends))
+
+ (with-eval-after-load 'flycheck
+ (add-hook 'flycheck-mode-hook #'flycheck-irony-setup))
+#+END_SRC
+
+*** flycheck
+#+BEGIN_SRC emacs-lisp :tangle yes :results silent
+ (use-package flycheck
+ :ensure t)
+#+END_SRC
+
+*** gtags
+#+BEGIN_SRC emacs-lisp :tangle yes :results silent
+ (use-package ggtags
+ :ensure t
+ :config
+ (define-key ggtags-mode-map (kbd "M-g d") 'ggtags-find-definition)
+ (define-key ggtags-mode-map (kbd "M-g r") 'ggtags-find-reference)
+ (define-key ggtags-mode-map (kbd "M-g r") 'ggtags-find-reference)
+ (define-key ggtags-mode-map (kbd "C-c g s") 'ggtags-find-other-symbol)
+ (define-key ggtags-mode-map (kbd "C-c g h") 'ggtags-view-tag-history)
+ (define-key ggtags-mode-map (kbd "C-c g r") 'ggtags-find-reference)
+ (define-key ggtags-mode-map (kbd "C-c g f") 'ggtags-find-file)
+ (define-key ggtags-mode-map (kbd "C-c g c") 'ggtags-create-tags)
+ (define-key ggtags-mode-map (kbd "C-c g u") 'ggtags-update-tags))
+
+ (add-hook 'c-mode-common-hook
+ (lambda ()
+ (when (derived-mode-p 'c-mode 'c++-mode 'java-mode)
+ (ggtags-mode 1))))
+
+ (require 'cc-mode)
+ (require 'semantic)
+
+ (global-semanticdb-minor-mode 1)
+ (global-semantic-idle-scheduler-mode 1)
+
+ (semantic-mode 1)
+#+END_SRC
+
+*** google C style
+#+BEGIN_SRC emacs-lisp :tangle yes :results silent
+ (use-package google-c-style
+ :ensure t
+ :config
+ (add-hook 'c-mode-hook 'google-set-c-style)
+ (add-hook 'c++-mode-hook 'google-set-c-style))
+#+END_SRC
+
+** Lua
+#+BEGIN_SRC emacs-lisp :tangle yes :results silent
+ (use-package lua-mode
+ :ensure t)
+#+END_SRC
+
+** Scheme
+Install =guile=, =guile= is an implementation of =Scheme= programming language.
+#+BEGIN_SRC sh
+ brew install guile
+#+END_SRC
+
+#+BEGIN_SRC emacs-lisp :tangle yes :results silent
+ (setq geiser-scheme-implementation 'guile)
+#+END_SRC
+
+#+BEGIN_SRC scheme
+ (define a "3")
+ a
+#+END_SRC
+
+#+RESULTS:
+: 3
+
+** Racket
+#+BEGIN_SRC emacs-lisp :tangle yes :results silent
+ (use-package racket-mode
+ :ensure t
+ :config
+ (define-key racket-mode-map (kbd "s-r") 'racket-run)
+ (add-to-list 'racket-mode-hook (lambda () (lispy-mode 1))))
+
+ ;; set racket path
+ (setenv "PATH" (concat (getenv "PATH")
+ ":" "/Applications/Racket v6.6/bin"))
+ (setenv "MANPATH" (concat (getenv "MANPATH")
+ ":" "/Applications/Racket v6.6/man"))
+ (setq exec-path (append exec-path '("/Applications/Racket v6.6/bin")))
+
+ (add-to-list 'auto-mode-alist '("\\.rkt\\'" . racket-mode))
+#+END_SRC
+
+* Compile
+Set the environments vairables in compilation mode
+#+BEGIN_SRC emacs-lisp :tangle yes :results silent
+ (use-package compile
+ :commands compile
+ :config
+ (setq compilation-environment (cons "LC_ALL=C" compilation-environment))
+ (setq compilation-auto-jump-to-first-error t)
+ (setq compilation-auto-jump-to-next t)
+ (setq compilation-scroll-output 'first-error))
+
+ ;; super-r to compile
+ (with-eval-after-load "compile"
+ (define-key compilation-mode-map (kbd "C-o") nil)
+ (define-key compilation-mode-map (kbd "n") 'compilation-next-error)
+ (define-key compilation-mode-map (kbd "p") 'compilation-previous-error)
+ (define-key compilation-mode-map (kbd "r") #'recompile))
+
+ (global-set-key (kbd "s-r") 'compile)
+#+END_SRC
+
+* Auto-Insert
+** Enable auto-insert mode
+#+BEGIN_SRC emacs-lisp :tangle yes :results silent
+ (auto-insert-mode t)
+ (setq auto-insert-query nil)
+#+END_SRC
+
+** C++ Auto Insert
+#+BEGIN_SRC emacs-lisp :tangle yes :results silent
+ (eval-after-load 'autoinsert
+ '(define-auto-insert '("\\.cpp\\|.cc\\'" . "C++ skeleton")
+ '(
+ "Short description:"
+ "/*"
+ "\n * " (file-name-nondirectory (buffer-file-name))
+ "\n */" > \n \n
+ "#include <iostream>" \n
+ "//#include \""
+ (file-name-sans-extension
+ (file-name-nondirectory (buffer-file-name)))
+ ".hpp\"" \n \n
+ "using namespace std;" \n \n
+ "int main (int argc, char *argv[])"
+ "\n{" \n
+ > _ \n
+ "return 0;"
+ "\n}" > \n
+ )))
+
+ (eval-after-load 'autoinsert
+ '(define-auto-insert '("\\.c\\'" . "C skeleton")
+ '(
+ "Short description:"
+ "/*\n"
+ " * " (file-name-nondirectory (buffer-file-name)) "\n"
+ " */" > \n \n
+ "#include <stdio.h>" \n
+ "//#include \""
+ (file-name-sans-extension
+ (file-name-nondirectory (buffer-file-name)))
+ ".h\"" \n \n
+ "int main (int argc, char *argv[])\n"
+ "{" \n
+ > _ \n
+ "return 0;\n"
+ "}" > \n
+ )))
+
+ (eval-after-load 'autoinsert
+ '(define-auto-insert '("\\.h\\|.hpp\\'" . "c/c++ header")
+ '((s-upcase (s-snake-case (file-name-nondirectory buffer-file-name)))
+ "#ifndef " str n "#define " str "\n\n" _ "\n\n#endif // " str)))
+#+END_SRC
+
+** Python template
+#+BEGIN_SRC emacs-lisp :tangle yes :results silent
+ (eval-after-load 'autoinsert
+ '(define-auto-insert '("\\.\\(py\\)\\'" . "Python skeleton")
+ '(
+ "Empty"
+ "#import os,sys" \n
+ \n \n
+ )))
+#+END_SRC
+
+** Elisp
+Emacs lisp auto-insert, based on the default module in =autoinsert.el=, but replace =completing-read= as
+=completing-read-ido-ubiquitous= to fix the edge case of that =ido= cannot handle.
+#+BEGIN_SRC emacs-lisp :tangle yes :results silent
+ (eval-after-load 'autoinsert
+ '(define-auto-insert '("\\.el\\'" . "my Emacs Lisp header")
+ '(
+ "Short description: "
+ ";;; " (file-name-nondirectory (buffer-file-name)) " --- " str
+ (make-string (max 2 (- 80 (current-column) 27)) ?\s)
+ "-*- lexical-binding: t; -*-" '(setq lexical-binding t)
+ "\n
+ ;; Copyright (C) " (format-time-string "%Y") " "
+ (getenv "ORGANIZATION") | (progn user-full-name) "
+
+ ;; Author: " (user-full-name)
+ '(if (search-backward "&" (line-beginning-position) t)
+ (replace-match (capitalize (user-login-name)) t t))
+ '(end-of-line 1) " <" (progn user-mail-address) ">
+ ;; Keywords: "
+ '(require 'finder)
+ ;;'(setq v1 (apply 'vector (mapcar 'car finder-known-keywords)))
+ '(setq v1 (mapcar (lambda (x) (list (symbol-name (car x))))
+ finder-known-keywords)
+ v2 (mapconcat (lambda (x) (format "%12s: %s" (car x) (cdr x)))
+ finder-known-keywords
+ "\n"))
+ ((let ((minibuffer-help-form v2))
+ (completing-read-ido-ubiquitous "Keyword, C-h: " v1 nil t))
+ str ", ") & -2 "
+
+ \;; This program is free software; you can redistribute it and/or modify
+ \;; it under the terms of the GNU General Public License as published by
+ \;; the Free Software Foundation, either version 3 of the License, or
+ \;; (at your option) any later version.
+
+ \;; This program is distributed in the hope that it will be useful,
+ \;; but WITHOUT ANY WARRANTY; without even the implied warranty of
+ \;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ \;; GNU General Public License for more details.
+
+ \;; You should have received a copy of the GNU General Public License
+ \;; along with this program. If not, see <http://www.gnu.org/licenses/>.
+
+ \;;; Commentary:
+
+ \;; " _ "
+
+ \;;; Code:
+
+
+ \(provide '"
+ (file-name-base)
+ ")
+ \;;; " (file-name-nondirectory (buffer-file-name)) " ends here\n")))
+#+END_SRC
+
+** Org file template
+#+BEGIN_SRC emacs-lisp :tangle yes :results silent
+ (eval-after-load 'autoinsert
+ '(define-auto-insert '("\\.\\(org\\)\\'" . "Org-mode skeleton")
+ '(
+ "title: "
+ "#+TITLE: " str (make-string 30 ?\s) > \n
+ "#+AUTHOR: Peng Li\n"
+ "#+EMAIL: seudut@gmail.com\n"
+ "#+DATE: " (shell-command-to-string "echo -n $(date +%Y-%m-%d)") > \n
+ > \n
+ > _)))
+#+END_SRC
+
+* Markdown mode
+#+BEGIN_SRC emacs-lisp :tangle yes :results silent
+ (use-package markdown-mode
+ :ensure t
+ :commands (markdown-mode gfm-mode)
+ :mode (("README\\.md\\'" . gfm-mode)
+ ("\\.md\\'" . markdown-mode)
+ ("\\.markdown\\'" . markdown-mode))
+ :init (setq markdown-command "multimarkdown"))
+#+END_SRC
+
+#+BEGIN_SRC emacs-lisp :tangle yes :results silent
+ (use-package markdown-preview-eww
+ :ensure t)
+#+END_SRC
+
+* Gnus
+** Gmail setting
+Refer [[https://www.emacswiki.org/emacs/GnusGmail][GnusGmail]]
+#+BEGIN_SRC emacs-lisp :tangle yes :results silent
+ (setq user-mail-address "seudut@gmail.com"
+ user-full-name "Peng Li")
+
+ (setq gnus-select-method
+ '(nnimap "gmail"
+ (nnimap-address "imap.gmail.com")
+ (nnimap-server-port "imaps")
+ (nnimap-stream ssl)))
+
+ (setq smtpmail-smtp-service 587
+ gnus-ignored-newsgroups "^to\\.\\|^[0-9. ]+\\( \\|$\\)\\|^[\"]\"[#'()]")
+
+ ;; Use gmail sending mail
+ (setq message-send-mail-function 'smtpmail-send-it
+ smtpmail-starttls-credentials '(("smtp.gmail.com" 587 nil nil))
+ smtpmail-auth-credentials '(("smtp.gmail.com" 587 "seudut@gmail.com" nil))
+ smtpmail-default-smtp-server "smtp.gmail.com"
+ smtpmail-smtp-server "smtp.gmail.com"
+ smtpmail-smtp-service 587
+ starttls-use-gnutls t)
+#+END_SRC
+
+And put the following in =~/.authinfo= file, replacing =<USE>= with your email address
+and =<PASSWORD>= with the password
+#+BEGIN_EXAMPLE
+ machine imap.gmail.com login <USER> password <PASSWORD> port imaps
+ machine smtp.gmail.com login <USER> password <PASSWORD> port 587
+#+END_EXAMPLE
+
+Then Run =M-x gnus=
+
+** Group buffer
+#+BEGIN_SRC emacs-lisp :tangle yes :results silent
+ (use-package gnus
+ :init
+ (setq gnus-permanently-visible-groups "\.*")
+ :config
+ (cond (window-system
+ (setq custom-background-mode 'light)
+ (defface my-group-face-1
+ '((t (:foreground "Red" :bold t))) "First group face")
+ (defface my-group-face-2
+ '((t (:foreground "DarkSeaGreen4" :bold t)))
+ "Second group face")
+ (defface my-group-face-3
+ '((t (:foreground "Green4" :bold t))) "Third group face")
+ (defface my-group-face-4
+ '((t (:foreground "SteelBlue" :bold t))) "Fourth group face")
+ (defface my-group-face-5
+ '((t (:foreground "Blue" :bold t))) "Fifth group face")))
+ (setq gnus-group-highlight
+ '(((> unread 200) . my-group-face-1)
+ ((and (< level 3) (zerop unread)) . my-group-face-2)
+ ((< level 3) . my-group-face-3)
+ ((zerop unread) . my-group-face-4)
+ (t . my-group-face-5))))
+
+
+ ;; key-
+ (add-hook 'gnus-group-mode-hook (lambda ()
+ (define-key gnus-group-mode-map "k" 'gnus-group-prev-group)
+ (define-key gnus-group-mode-map "j" 'gnus-group-next-group)
+ (define-key gnus-group-mode-map "g" 'gnus-group-jump-to-group)
+ (define-key gnus-group-mode-map "v" (lambda () (interactive) (gnus-group-select-group t)))))
+#+END_SRC
+
+#+BEGIN_SRC emacs-lisp :tangle yes :results silent
+ (setq gnus-fetch-old-headers 't)
+
+
+
+ (setq gnus-extract-address-components
+ 'mail-extract-address-components)
+ ;; summary buffer
+ (setq gnus-summary-line-format "%U%R%z%I%(%[%-20,20f%]%) %s%-80= %11&user-date;\n")
+ (setq gnus-user-date-format-alist '(((gnus-seconds-today) . "%H:%M")
+ ((+ 86400 (gnus-seconds-today)) . "%a %H:%M")
+ (604800 . "%a, %b %-d")
+ (15778476 . "%b %-d")
+ (t . "%Y-%m-%d")))
+
+ (setq gnus-thread-sort-functions '((not gnus-thread-sort-by-number)))
+ (setq gnus-unread-mark ?\.)
+ (setq gnus-use-correct-string-widths t)
+
+ ;; thread
+ (setq gnus-thread-hide-subtree t)
+
+ ;; (with-eval-after-load 'gnus-summary-mode
+ ;; (define-key gnus-summary-mode-map (kbd "C-o") 'sd/hydra-window/body))
+
+ (add-hook 'gnus-summary-mode-hook (lambda ()
+ (define-key gnus-summary-mode-map (kbd "C-o") nil)))
+
+
+#+END_SRC
+
+** Windows layout
+See [[https://www.emacswiki.org/emacs/GnusWindowLayout][GnusWindowLayout]]
+#+BEGIN_SRC emacs-lisp :tangle yes :results silent
+ (gnus-add-configuration
+ '(summary
+ (horizontal 1.0
+ (vertical 35
+ (group 1.0))
+ (vertical 1.0
+ (summary 1.0 poine)))))
+
+ (gnus-add-configuration
+ '(article
+ (horizontal 1.0
+ (vertical 35
+ (group 1.0))
+ (vertical 1.0
+ (summary 0.50 point)
+ (article 1.0)))))
+
+ (with-eval-after-load 'gnus-group-mode
+ (gnus-group-select-group "INBOX"))
+ ;; (add-hook 'gnus-group-mode-map (lambda ()
+ ;; (gnus-group-select-group "INBOX")))
+#+END_SRC
+
+* Mu4e
+Refer [[http://www.kirang.in/2014/11/13/emacs-as-email-client-with-offlineimap-and-mu4e-on-osx][emacs-as-email-client-with-offlineimap-and-mu4e-on-osx]]
+
+** OfflineImap - download all mails from IMAP into local directory, and keep in sync
+#+BEGIN_SRC sh :results output replace
+ # offline-imap
+ brew install offline-imap
+
+ cp /usr/local/etc/offlineimap.conf ~/.offlineimapr
+
+ #For the =offlineimap= config on mac, using =sslcacertfile= instead of =cert_fingerpring=. On Mac
+ sslcacertfile = /usr/local/etc/openssl/cert.pem
+#+END_SRC
+
+#+BEGIN_SRC conf
+ [general]
+ ui=TTYUI
+ accounts = Gmail
+ autorefresh = 5
+
+ [Account Gmail]
+ localrepository = Gmail-Local
+ remoterepository = Gmail-Remote
+
+ [Repository Gmail-Local]
+ type = Maildir
+ localfolders = ~/.Mail/seudut@gmail.com
+
+ [Repository Gmail-Remote]
+ type = Gmail
+ remotehost = imap.gmail.com
+ remoteuser = seudut@gmail.com
+ remotepass = xxxxxxxx
+ realdelete = no
+ ssl = yes
+ #cert_fingerprint = <insert gmail server fingerprint here>
+ sslcacertfile = /usr/local/etc/openssl/cert.pem
+ maxconnections = 1
+ folderfilter = lambda folder: folder not in ['[Gmail]/Trash',
+ '[Gmail]/Spam',
+ '[Gmail]/All Mail',
+ ]
+#+END_SRC
+
+Then, run =offlineimap= to sync the mail
+
+** Mu - fast search, view mails and extract attachments.
+#+BEGIN_SRC sh
+ EMACS=/usr/local/bin/emacs brew install mu --with-emacs
+#+END_SRC
+
+Then, run =mu index --maildir=~/.Mail=
+
+** Mu4e - Emacs frontend of Mu
+config from [[http://www.kirang.in/2014/11/13/emacs-as-email-client-with-offlineimap-and-mu4e-on-osx/][emacs-as-email-client-with-offlineimap-and-mu4e-on-osx]]
+#+BEGIN_SRC emacs-lisp :tangle yes :results silent
+ (require 'mu4e)
+ (setq mu4e-maildir "~/.Mail")
+ (setq mu4e-drafts-folder "/[Gmail].Drafts")
+ (setq mu4e-sent-folder "/[Gmail].Sent Mail")
+ ;; don't save message to Sent Messages, Gmail/IMAP takes care of this
+ (setq mu4e-sent-messages-behavior 'delete)
+ ;; allow for updating mail using 'U' in the main view:
+ (setq mu4e-get-mail-command "offlineimap")
+
+ ;; shortcuts
+ (setq mu4e-maildir-shortcuts
+ '( ("/INBOX" . ?i)
+ ("/[Gmail].Sent Mail" . ?s)))
+
+ ;; something about ourselves
+ (setq
+ user-mail-address "seudut@gmail.com"
+ user-full-name "Peng Li"
+ mu4e-compose-signature
+ (concat
+ "Thanks,\n"
+ "Peng\n"))
+
+ ;; show images
+ (setq mu4e-show-images t)
+
+ ;; use imagemagick, if available
+ (when (fboundp 'imagemagick-register-types)
+ (imagemagick-register-types))
+
+ ;; convert html emails properly
+ ;; Possible options:
+ ;; - html2text -utf8 -width 72
+ ;; - textutil -stdin -format html -convert txt -stdout
+ ;; - html2markdown | grep -v ' _place_holder;' (Requires html2text pypi)
+ ;; - w3m -dump -cols 80 -T text/html
+ ;; - view in browser (provided below)
+ (setq mu4e-html2text-command "textutil -stdin -format html -convert txt -stdout")
+
+ ;; spell check
+ (add-hook 'mu4e-compose-mode-hook
+ (defun my-do-compose-stuff ()
+ "My settings for message composition."
+ (set-fill-column 72)
+ (flyspell-mode)))
+
+ ;; add option to view html message in a browser
+ ;; `aV` in view to activate
+ (add-to-list 'mu4e-view-actions
+ '("ViewInBrowser" . mu4e-action-view-in-browser) t)
+
+ ;; fetch mail every 10 mins
+ (setq mu4e-update-interval 600)
+
+ ;; mu4e view
+ (setq-default mu4e-headers-fields '((:flags . 6)
+ (:from-or-to . 22)
+ (:mailing-list . 20)
+ (:thread-subject . 70)
+ (:human-date . 16)))
+#+END_SRC
+
+** Smtp - send mail
+- =gnutls=, depends on =gnutls=, first confirm this is installed, otherwise, =brew install gnutls=
+- =~/.authinfo=
+#+BEGIN_SRC fundamental
+ machine smtp.gmail.com login <gmail username> password <gmail password>
+#+END_SRC
+- OPTIONAL, encrypt the =~/.authinfo= file
+#+BEGIN_SRC sh :results output replace
+ gpg --output ~/.authinfo.gpg --symmetric ~/.authinfo
+#+END_SRC
+
+* Ediff
+#+BEGIN_SRC emacs-lisp :tangle yes :results silent
+ (with-eval-after-load 'ediff
+ (setq ediff-split-window-function 'split-window-horizontally)
+ (setq ediff-window-setup-function 'ediff-setup-windows-plain)
+ (add-hook 'ediff-startup-hook 'ediff-toggle-wide-display)
+ (add-hook 'ediff-cleanup-hook 'ediff-toggle-wide-display)
+ (add-hook 'ediff-suspend-hook 'ediff-toggle-wide-display))
+#+END_SRC
+
+* Entertainment
+** GnuGo
+Play Go in Emacs, gnugo xpm refert [[https://github.com/okanotor/dotemacs/blob/f95b774cb292d1169748bc0a62ba647bbd8c0652/etc/my-inits/my-inits-gnugo.el][to here]]. start at image display mode and grid mode
+#+BEGIN_SRC emacs-lisp :tangle yes :results silent
+ (use-package gnugo
+ :ensure t
+ :defer t
+ :init
+ (require 'gnugo-imgen)
+ (setq gnugo-xpms 'gnugo-imgen-create-xpms)
+ (add-hook 'gnugo-start-game-hook '(lambda ()
+ (gnugo-image-display-mode)
+ (gnugo-grid-mode)))
+ :config
+ (add-to-list 'gnugo-option-history (format "--boardsize 19 --color black --level 1")))
+#+END_SRC
+
+** Emms
+We can use [[https://www.gnu.org/software/emms/quickstart.html][Emms]] for multimedia in Emacs
+#+BEGIN_SRC emacs-lisp :tangle yes :results silent
+ (use-package emms
+ :ensure t
+ :init
+ (setq emms-directory (concat sd-temp-directory "emms"))
+ (setq emms-source-file-default-directory "~/Music/")
+ :config
+ (emms-standard)
+ (emms-default-players)
+ (define-emms-simple-player mplayer '(file url)
+ (regexp-opt '(".ogg" ".mp3" ".mgp" ".wav" ".wmv" ".wma" ".ape"
+ ".mov" ".avi" ".ogm" ".asf" ".mkv" ".divx" ".mpeg"
+ "http://" "mms://" ".rm" ".rmvb" ".mp4" ".flac" ".vob"
+ ".m4a" ".flv" ".ogv" ".pls"))
+ "mplayer" "-slave" "-quiet" "-really-quiet" "-fullscreen")
+ (emms-history-load))