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My Dotfiles in Org mode

Table of Contents

Meta

How to use this file?

  • To extract dotfiles (such as ~~/.bash_profile~) from this file, type C-c C-v t (org-babel-tangle) in Emacs.
  • To propagate changes in dotfiles (such as ~~/.bash_profile~) to this file, type M-x org-babel-detangle in Emacs.

Safer org-babel-tangle

Use the following command instead of org-babel-tangle to avoid overriding exist files. Notes that

  • it doesn’t respect :tangle-mode if the exiting file has different mode bits with :tangle-mode.
  • it might not work with remote file
(defun chunyang-org-babel-tangle (&optional arg target-file lang)
  "Like `org-babel-tangle' but don't override without permission."
  (declare (interactive-only org-babel-tangle))
  (interactive "P")
  (require 'ob-tangle)
  (require 'seq)
  (require 'cl-lib)
  (save-some-buffers)
  (let* ((tmpdir (let ((dir "/tmp/org-babel-tangle/"))
                   (or (file-exists-p dir) (make-directory dir))
                   dir))
         (mkbak (lambda (filename)
                  (expand-file-name
                   (replace-regexp-in-string "/" "!" (expand-file-name filename))
                   tmpdir)))
         (diffp (lambda (file-a file-b)
                  (/= 0 (call-process diff-command nil nil nil (expand-file-name file-a) file-b))))
         (swap (lambda (file-a file-b)
                 (let ((tmp (make-temp-name tmpdir)))
                   (copy-file file-a tmp t t t t)
                   (copy-file file-b file-a t t t t)
                   (copy-file tmp file-b t t t t))))
         deleted-files
         tangled-files
         (advice (define-advice delete-file (:around (old-fun filename &rest args) dont-delete)
                   (push filename deleted-files)
                   (copy-file filename (funcall mkbak filename) t t t t)
                   (apply old-fun filename args))))
    (unwind-protect
        (progn
          (setq tangled-files (org-babel-tangle arg target-file lang)
                deleted-files (nreverse deleted-files))
          (cl-loop for f in (seq-intersection deleted-files tangled-files)
                   for bak = (funcall mkbak f)
                   do
                   (funcall swap f bak)
                   (if (funcall diffp f bak)
                       (with-current-buffer (find-file-noselect f)
                         (message "Diff %s..." f)
                         (delete-region (point-min) (point-max))
                         (insert-file-contents bak))
                     (message "Skip %s..." f))
                   finally (save-some-buffers)))
      (advice-remove 'delete-file advice))))

Resources

Passwords

To view and edit these passwords, type M-x org-encrypt-entries.

During org-babel-tangle, it might be too annoying by asking for which key to use for encryption each time, use the following work-around to bypass it.

(require 'org-crypt)
(setq org-crypt-key "mail@xuchunyang.me")
(define-advice org-babel-tangle (:around (old-fun &rest r) shutup-epa-file)
  "Shut up epa-file.

`epa-file' will prompt for which key to use for encryption each
time if `epa-file-encrypt-to' is not set locally, however it looks like
local variables embedded in comment will not applied during org-tangle."
  (with-current-buffer (current-buffer)
    (cl-assert (eq major-mode 'org-mode))
    (let (before-save-hook return)
      (org-decrypt-entries)
      (save-buffer)
      (define-advice write-region (:before (&rest r) set-epa-file-encrypt-to)
        (setq-local epa-file-encrypt-to org-crypt-key))
      (unwind-protect
          (setq return (apply old-fun r))
        (advice-remove 'write-region #'write-region@set-epa-file-encrypt-to))
      (org-encrypt-entries)
      (save-buffer)
      return)))

~/.authinfo.gpg

-----BEGIN PGP MESSAGE----- Version: GnuPG v2

hQIMA+LcwErZWE+CARAAkDKQp7aAUKRDjy3cRYyG+FfVZCSBWG4yYz41kXa51mfV Qd21dUflyoCxnT1XizaXhzHnuIXEShxXzdJOUyTD8aL1Bc2GexZUs/jWZiZpGESq nuYvfNTeOUbXQW3Ub8Q4NngjR+xoOrupt64DVYPaFi5LsQeDYDHdoUHszjLuilCF 1pkkwowOBKrIxpRbznNts+4dD6TGdFyfIlowcds9PoNKWV6iFzqARmgVkKvyAv54 F7neoaMbIcdbymj+euR/abE4pTH0Su/mHmm1oat9vh9RWFlH4RF1rrsJgjXkxX0F NWmPJgb9thYVEY7Ooijj+10Pd1NGWpNCE9+3HUsVKONDMW/PvX29Ve4QFqIdMmte fqFlE/SVBAkdMLmVB9y53lcZxrpE22LVsv4GQrzPw5K77AnO8sWzxEd8k/ijqJco Jvox/jOm0XaZO2bUa7KUnz1J1l/aDvnfHw/iWeg25S5/86sU3QXXbN2heuHq46NL b0GkCb06EL2Xq/b3BSDoJXY57BuROl2FQXhBxPNYzmjKKbEL4qQ98j49ny2hWtSd gud9IDxIVwqU1pfKSQ2eUm9kBzYWzhbKa8zHcHpYr4GnLoeK6tdZclvcmThqbOu8 pcoW4e4ouTxGLmH2E91XACrSV1AUcm1hKrAaozsStlP+o6WJuCj9h8AQJVG/3MDS wFUBbA/dWHGZl4ZXIq6JqRRPqSqA9JzxpA/xJCLy+USav7U7G9lABDbSR0GUeSI+ dlnSjFHa01pIkgrb26rWThYnGVBeEJPQyqp7rwfDX2nLX2AZA/EErMeNQCCaAzFk PI5hTOkFME3G00wyWnczBTbfVjXUWbBYfqtJLYpN12ZvNG0z2sy4TWQb3YWcSNIa dyxXsmGyIXYWCUpfh21qqCPm+KxeVg6CmXPgESmUWb31Y3aC5YvmR2ABYyTCqqby 6XlsI00xj9YeTK5xmqchSXcjHdHWUGAq9IEVSgL3hp9ET33r1l42zd3aHJqmiaFm xmMzK1KWgt5jJYKKz1snAgCCFdGq3fx6Dh4fcIv40HwTa/yDGvVV =PH15 -----END PGP MESSAGE-----

Bash

Meta

学习 Bash

变量（全局本地）、判断、控制结构、函数。

learn/sh at master · javier-lopez/learn

Resources

Style Guides

Guides

Tools

~~/.bashrc~ vs ~~/.bash_profile~

Don’t use ~/.bashrc to keep configuration, use ~/.bash_profile instead.

# The variable PS1 is unset in non-interactive shells:
# [[https://www.gnu.org/software/bash/manual/html_node/Is-this-Shell-Interactive_003f.html][Bash Reference Manual: Is this Shell Interactive?]]
if [ -z "$PS1" ]; then
    # This shell is not interactive
    source ~/.path
else
    # This shell is interactive
    source ~/.bash_profile
fi

OS detection

function is_mac () {
    [[ "$OSTYPE" =~ ^darwin ]]
}

function is_gnu_linux () {
    [[ "$OSTYPE" == linux-gnu ]]
}

Helper

function source_maybe () {
    local file="$1"
    [ -r "$file" ] && [ -f "$file" ] && source "$file"
}

Startup

# Add `~/bin` to the `$PATH`
export PATH="$HOME/bin:$PATH"

# Load the shell dotfiles, and then some:
# * ~/.path can be used to extend `$PATH`.
# * ~/.extra can be used for other settings you don’t want to commit.
for file in ~/.{path,bash_prompt,exports,aliases,functions,extra}; do
    source_maybe "$file"
done
unset file

$PATH in ~/.path

Here’s an example ~~/.path~ file that adds /usr/local/bin to the $PATH:

export PATH="/usr/local/bin:$PATH"

Prompt

# Looks like "~$ " in $HOME ("~" is in blue)
PS1="\[\e[34m\]\w\[\e[m\]\\$ "

Other Environment variables in ~/.exports

# Make Emacs the default editor.
export EDITOR='emacsclient'
export VISUAL='emacsclient'

# Enable support of searching Chinese for Notmuch
export XAPIAN_CJK_NGRAM=1

Aliases in ~/.aliases

# Detect which `ls` flavor is in use
if ls --color > /dev/null 2>&1; then # GNU `ls`
    colorflag="--color=auto"
    export LS_COLORS='no=00:fi=00:di=01;31:ln=01;36:pi=40;33:so=01;35:do=01;35:bd=40;33;01:cd=40;33;01:or=40;31;01:ex=01;32:*.tar=01;31:*.tgz=01;31:*.arj=01;31:*.taz=01;31:*.lzh=01;31:*.zip=01;31:*.z=01;31:*.Z=01;31:*.gz=01;31:*.bz2=01;31:*.deb=01;31:*.rpm=01;31:*.jar=01;31:*.jpg=01;35:*.jpeg=01;35:*.gif=01;35:*.bmp=01;35:*.pbm=01;35:*.pgm=01;35:*.ppm=01;35:*.tga=01;35:*.xbm=01;35:*.xpm=01;35:*.tif=01;35:*.tiff=01;35:*.png=01;35:*.mov=01;35:*.mpg=01;35:*.mpeg=01;35:*.avi=01;35:*.fli=01;35:*.gl=01;35:*.dl=01;35:*.xcf=01;35:*.xwd=01;35:*.ogg=01;35:*.mp3=01;35:*.wav=01;35:'
else # macOS `ls`
    colorflag="-G"
    export LSCOLORS='BxBxhxDxfxhxhxhxhxcxcx'
fi

# List all files colorized in long format
alias l="ls -lF ${colorflag}"

# List all files colorized in long format, including dot files
alias la="ls -laF ${colorflag}"

# List only directories
alias lsd="ls -lF ${colorflag} | grep --color=never '^d'"

# Always use color output for `ls`
alias ls="command ls ${colorflag}"

# Enable aliases to be sudo’ed
alias sudo='sudo '

# Stopwatch
alias timer='echo "Timer started. Stop with Ctrl-D." && date && time cat && date'

# Reload the shell (i.e. invoke as a login shell)
alias reload="exec $SHELL -l"

# Print each PATH entry on a separate line
alias path='echo -e ${PATH//:/\\n}'

# Use color with Grep
alias grep="command grep --color=auto"

# Cat with syntax highlight
alias e2ansi-cat="$HOME/src/e2ansi/bin/e2ansi-cat"

Completion

# Add tab completion for many Bash commands (MacPorts)
if is_mac && [ -f /opt/local/etc/profile.d/bash_completion.sh ]; then
    . /opt/local/etc/profile.d/bash_completion.sh
elif is_gnu_linux && [ -f /usr/share/bash-completion/bash_completion ]; then
    . /usr/share/bash-completion/bash_completion
fi

Personal bash completion in ~/.bash_completion

command -v pandoc &>/dev/null && eval "$(pandoc --bash-completion)"

# Use a custom version: 1) enable git-ls-files 2) support the alias dotfiles
# cp /usr/share/bash-completion/completions/git ~/.git-completion.bash
source_maybe "~/.git-completion.bash"

source_maybe "/Applications/Docker.app/Contents/Resources/etc/docker.bash-completion"

_emacs ()
{
    local cur prev opts
    COMPREPLY=()
    cur="${COMP_WORDS[COMP_CWORD]}"
    prev="${COMP_WORDS[COMP_CWORD-1]}"
    opts='--help --version -L --directory --l --load --script --daemon --debug-init -Q --reverse-video --no-desktop --no-window-system --batch --eval --funcall'

    case $prev in
        --help|--version)
            return
            ;;
        -L|--directory)
            COMPREPLY=( $(compgen -d ${cur}) )
            return
            ;;
        -l|--load|--script)
            COMPREPLY=( $(compgen -f ${cur}) )
            return
            ;;
    esac

    COMPREPLY=( $(compgen -f -W "${opts}" -- ${cur}) )
}
complete -F _emacs emacs

_emacsclient ()
{
    local cur prev opts
    COMPREPLY=()
    cur="${COMP_WORDS[COMP_CWORD]}"
    prev="${COMP_WORDS[COMP_CWORD-1]}"
    opts='
    --version
    --help
    --tty
    --create-frame
    --eval
    --no-wait
    --quiet
    --socket-name
    --server-file
    --alternate-editor
    '

    COMPREPLY=( $(compgen -f -W "${opts}" -- ${cur}) )
}
complete -F _emacsclient emacsclient

History

The following settings of Bash history is copied from Better Bash history | Arabesque.

# Append history instead of rewriting it
shopt -s histappend

# Allow a larger history file
HISTFILESIZE=1000000
HISTSIZE=1000000

# Don’t store specific lines
HISTCONTROL='ignorespace:ignoredups'
HISTIGNORE='pwd:ls:bg:fg:history'

# Record timestamps
HISTTIMEFORMAT='%F %T '

# Use one command per line
shopt -s cmdhist

# Store history immediately
PROMPT_COMMAND='history -a;'

Select history with peco (base on bash/zsh のヒストリを peco で便利にする - Qiita):

peco-select-history () {
    declare l=$(HISTTIMEFORMAT= history | tac | peco --query "$READLINE_LINE" | cut -c 8-)
    READLINE_LINE="$l"
    READLINE_POINT=${#l}
}

bind -x '"\C-r": peco-select-history'

See also Examples · junegunn/fzf Wiki and Sample Usage · peco/peco Wiki.

Read Better Bash history | Arabesque again

Change directory

# Enable some Bash 4 features when possible:
# * `autocd`, e.g. `**/qux` will enter `./foo/bar/baz/qux`
# * Recursive globbing, e.g. `echo **/*.txt`
for option in autocd globstar; do
    shopt -s "$option" 2> /dev/null
done

Setup rupa/z: z - jump around:

if is_mac; then
    file=/opt/local/etc/profile.d/z.sh
elif is_gnu_linux; then
    file=/etc/profile.d/z.sh
fi

if [ -f "$file" ]; then
    source "$file"
else
    echo "Can't source $file, install it from <https://github.com/rupa/z>"
fi
unset file

Emacs

~/.emacs.d/misc/emacs.sh includes shell functions to launch Emacs’s functions (such as Magit and C-x C-f) inside Shell/Terminal.

source ~/.emacs.d/misc/emacs.sh

iTerm2

With iTerm2 Shell Integration, iTerm2 can

  • track recent used directories
  • capture command results
  • set mark
  • view command exit status
  • view command history
  • switch profile automatically

To install, first downlaod the script:

curl -L https://iterm2.com/misc/bash_startup.in -o ~/.iterm2_shell_integration.bash

Then load it:

[ "$TERM_PROGRAM" == "iTerm.app" ] && source_maybe "$HOME/.iterm2_shell_integration.bash"

Readline

info:bash#Readline Init File

# This file controls the behaviour of line input editing for
# programs that use the GNU Readline library.  Existing
# programs include FTP, Bash, and GDB.
#
# You can re-read the inputrc file with C-x C-r.
# Lines beginning with '#' are comments.
#
# First, include any system-wide bindings and variable
# assignments from /etc/Inputrc
$include /etc/Inputrc

$if Bash
# edit the path
"\C-xp": "PATH=${PATH}\e\C-e\C-a\ef\C-f"
# prepare to type a quoted word --
# insert open and close double quotes
# and move to just after the open quote
"\C-x\"": "\"\"\C-b"
# Quote the current or previous word
"\C-xq": "\eb\"\ef\""
$endif

# For FTP
$if Ftp
"\C-xg": "get \M-?"
"\C-xt": "put \M-?"
"\M-.": yank-last-arg
$endif

isync

OfflineImap 报 “Too many read 0” 错误

abort: command: FETCH => socket error: <type 'exceptions.IOError'> - Too many read 0

转而用 isync 。下面的配置是从 isync - ArchWiki 抄来的，其中的 “gmail” 懒得改了。

IMAPAccount main
# Address to connect to
Host imap.migadu.com
User mail@xuchunyang.me
# gem install netrc
PassCmd "ruby -r netrc -e 'print (Netrc.read(File.expand_path(\"~/.authinfo.gpg\"))[\"imap.migadu.com\"]).password'"
#
# Use SSL
SSLType IMAPS
CertificateFile /opt/local/share/curl/curl-ca-bundle.crt

IMAPStore main-remote
Account main

MaildirStore main-local
# The trailing "/" is important
Path ~/.mail/
Inbox ~/.mail/INBOX

Channel main
Master :main-remote:
Slave :main-local:
# Or include everything
Patterns *
# Automatically create missing mailboxes, both locally and on the server
Create Both
# Save the synchronization state files in the relevant directory
SyncState *

OfflineIMAP

Write a Python Script ~/.offlineimap.py to extract IMAP password from ~/.authinfo.gpg. I don’t know Python, the following is based on Gábor Melis’ () blog - OfflineIMAP with Encrypted Authinfo.

import re, os
from distutils.spawn import find_executable

def get_authinfo_password(machine, login):
    s = "machine %s login %s password ([^ ]*)\n" % (machine, login)
    p = re.compile(s)
    if find_executable("gpg2"):
        authinfo = os.popen("gpg2 -q --no-tty -d ~/.authinfo.gpg").read()
    else:
        authinfo = os.popen("gpg -q --no-tty -d ~/.authinfo.gpg").read()
    return p.search(authinfo).group(1)
[general]
pythonfile = ~/.offlineimap.py
accounts = Personal

[Account Personal]
localrepository = Local
remoterepository = Remote

[Repository Local]
type = Maildir
localfolders = ~/Maildir

[Repository Remote]
type = IMAP

remotehost = imap.migadu.com
remoteuser = mail@xuchunyang.me
remotepasseval = get_authinfo_password("imap.migadu.com", "mail@xuchunyang.me")
sslcacertfile = /opt/local/etc/openssl/cert.pem

Resources

Notmuch

Hooks

set -x

mbsync -V -a

echo "pre-new hook Done!"
# [[man:notmuch-hooks][Manpage for notmuch-hooks]]
# 
# [[https://notmuchmail.org/initial_tagging/][initial tagging]]
# [[https://notmuchmail.org/pipermail/notmuch/2010/001691.html][{notmuch} Initial tagging]]

set -x

# notmuch tag +to-me -- to:mail@xuchunyang.me and not tag:to-me
# notmuch tag +sent -- from:mail@xuchunyang.me and not tag:sent
# notmuch tag +org -- to:emacs-orgmode@gnu.org and not tag:org
# notmuch tag +emacs -- to:emacs-devel@gnu.org and not tag:emacs
# notmuch tag +emacs -- to:help-gnu-emacs@gnu.org and not tag:emacs
# notmuch tag +notmuch -- to:notmuch@notmuchmail.org and not tag:notmuch

echo "post-new hook Done!"

Git

~/.gitignore

# Folder view configuration files
.DS_Store

~/.gitconfig

[user]
        name = Chunyang Xu
        email = mail@xuchunyang.me
        signingkey = A952083AF6D0A8BF
[gpg]
        program = gpg
[credential]
        helper = osxkeychain
[http]
        proxy = socks5://localhost:1086
[core]
        # Restroe Terminal after quitting
        #
        # See [[man:git-config][Manpage for git-config]] and [[man:less][Manpage for less]]
        #
        # Git defaults to less FRX
        #
        # -F or --quit-if-one-screen
        # -R or --RAW-CONTROL-CHARS
        # -X or --no-init
        #
        # XXX: -F doesn't work without -X, see
        # https://unix.stackexchange.com/questions/107315/less-quit-if-one-screen-without-no-init
        #
        # Thus deactivate X to restore terminal, and deactivate F to work with
        # it.
        pager = less -+X -+F
[include]
        path = .gitconfig_local

SSH

~/.ssh/id_rsa

-----BEGIN PGP MESSAGE----- Version: GnuPG v2

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~/.ssh/id_rsa.pub

ssh-rsa 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 mail@xuchunyang.me

~/.ssh/config

Host *
     # If the network connection is down, don't hang
     ServerAliveInterval 5
     # Master Connection
     # https://unix.stackexchange.com/questions/2857/ssh-easily-copy-file-to-local-system
     ControlMaster auto
     ControlPath ~/.ssh/control:%h:%p:%r

Host vps
     HostName xuchunyang.me
     User root

Host elpa
     HostName elpa.emacs-china.org
     User root

Host pc
     Hostname 192.168.0.105
     User xcy

GnuPG

I have made a backup for my GPG keys in my USB disk with

mkdir -v -p /Volumes/USB/backup/gnupg
cp -v ~/.gnupg/*.gpg /Volumes/USB/backup/gnupg

To resture these keys, use

cp /Volumes/USB/backup/gnupg/*.gpg ~/.gnupg

This method is from Instructions for exporting/importing (backup/restore) GPG keys.

nano

参考 /opt/local/share/doc/nano/sample.nanorc

## Use the blank line below the titlebar as extra editing space.
set morespace

## Switch on multiple file buffers (inserting a file will put it into
## a separate buffer).
set multibuffer

## Remember the cursor position in each file for the next editing session.
set positionlog

## Use smooth scrolling as the default.
set smooth

## Allow nano to be suspended.
set suspend

## Syntax highlight.
include "/opt/local/share/nano/*.nanorc"

## Key bindings.
## See nanorc(5) (section REBINDING KEYS) for more details on this.
bind ^S savefile main
bind M-Q findprevious main
bind M-W findnext main

Wget

# Set this to on to use timestamping by default:
# timestamping = on

# It is a good idea to make Wget send your email address in a `From:'
# header with your request (so that server administrators can contact
# you in case of errors).  Wget does *not* send `From:' by default.
header = From: Chunyang Xu <mail@xuchunyang.me>

Tips

Redirect wget to standard output

用 --output-document/-O 选项

wget --quiet --output-document=- xuchunyang.me
wget -q -O - xuchunyang.me

也可以写成更短的，不知道参数本来就可以这么写，又或者只是 Wget 的一个特例？

wget -qO- xuchunyang.me

Hammerspoon

-- http://www.hammerspoon.org/

hs.hotkey.bind({"ctrl", "cmd"}, "left", function()
      local win = hs.window.focusedWindow()
      local f = win:frame()
      local screen = win:screen()
      local max = screen:frame()

      f.x = max.x
      f.y = max.y
      f.w = max.w / 2
      f.h = max.h
      win:setFrame(f)
end)

hs.hotkey.bind({"ctrl", "cmd"}, "right", function()
      local win = hs.window.focusedWindow()
      local f = win:frame()
      local screen = win:screen()
      local max = screen:frame()

      f.x = max.x + (max.w / 2)
      f.y = max.y
      f.w = max.w / 2
      f.h = max.h
      win:setFrame(f)
end)

hs.hotkey.bind({"ctrl", "cmd"}, "up", function()
      local win = hs.window.focusedWindow()
      win:maximize()
end)

hs.hotkey.bind({"ctrl", "cmd"}, "down", function()
      local win = hs.window.focusedWindow()
      win:centerOnScreen()
end)

hs.alert.show("init.lua reloaded")

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