Purcell's emacs configuration plus C/C++ support
Emacs Lisp Common Lisp Scheme Ruby Makefile TeX Other
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README.org

Checklist

  • Tested with Emacs 24.3.1, 24.4, 24.5, 25.1 on Linux/Windows/Cygwin/Mac (I will stop 24.3 support at <2018-01-01>)
  • Please read FAQ to disable Vim key bindings
  • Please read section “Key bindings” to learn key bindings
  • If you use Windows Emacs, you have to install GnuTLS Dlls manually to be able to install packages from remote repositories
  • Most packages from MELPA are invisible by default. But all packages from MELPA Stable are visible. You can modify variable melpa-include-packages in ~/.emacs.d/lisp/init-elpa.el to install unstable packages
  • Other issues are covered in FAQ
  • Please read section “About Emacs 23” if you uses Emacs 23.4

Features

  • Stable, Emacs will never crash after full package upgrade
  • Efficient, tested on 10 years old computer
  • Native key bindings are preserved
  • Usable in emacs-nox, all key bindings and functionality still usable when you ssh to server with PuTTY
  • Robust, you can install packages without network access
  • Popular programming languages are supported, C/C++/Java/Ruby/Perl/Python/C#/Lua/Javascript …

Installation

Most users should follow the section “Install in normal way”.

You need the section “Install stable version in easiest way” if and only if:

  • You are absolutely newbie, knowing nothing about Linux/Unix
  • You are living in North Korea without internet access

Install in normal way

Please remove the file ~/.emacs.d/init.el and ~/.emacs. ~ in Home directory.

Please uninstall any package which is not installed at ~/.emacs.d. For example, run apt-get autoremove emacs-w3m on Debian/Ubuntu.

If you don’t know what I mean, then do nothing.

All packages should be placed at ~/.emacs.d from now on.

There are two ways to install this setup (I recommend the first way):

  1. download latest setup and extract its content into ~/.emacs.d, OR run command cd ~; git clone https://github.com/redguardtoo/emacs.d.git .emacs.d in shell.
  2. use stable setup, OR run command cd ~; git clone https://github.com/redguardtoo/emacs.d.git .emacs.d; cd .emacs.d; git reset --hard stable in shell.

Ensure that the init.el contained in this repo ends up at ~/.emacs.d/init.el.

By default, packages are installed automatically during Emacs startup.

Install stable version in easiest way (OPTIONAL)

You only need two zip files instead of git or network.

Here are the exact steps,

Now you are using local package repository ~/projs/melpa.

You can switch to online repositories like http://elpa.gnu.org or http://melpa.org by modifying ~/.emacs.d/lisp/init-elpa.el.

Third party tools (OPTIONAL)

Install

You can install them in any way you like. But OS package manager is easier.

OS package manager means:

  • apt-cyg at Cygwin
  • homebrew at Mac
  • any package manager at Linux (apt-get at Ubuntu, yum at Redhat, pacman at Arch, emerge at Gentoo …)

List of tools

These tools are OPTIONAL.

Please ignore any related error message. For example, if aspell and hunspell are not installed, you can ignore all the flyspell error messages.

w3m (web browser in console)

  • Required by w3m (w3m is emacs package name written in elisp)
  • Install through OS package manager
  • Please note only emacs with GUI can display image

lua

  • Required by flymake-lua
  • Install through OS package manager

aspell or hunspell

  • Required by flyspell
  • hunspell is the alternative of aspell. So you need only one of them.
  • Install through OS package manager
  • For aspell, you may need its dictionary aspell-en
  • I force the dictionary to “en_US” in ~/.emacs./lisp/init-spelling.el. You can modify it.
  • I recommend aspell for programmers

sbcl (lisp environment)

  • Required by lisp slime
  • Install through OS package manager

tidy

  • Required by web-mode for syntax check and tidy.el html formatting
  • Install through OS package manager

csslint

  • Install node.js through OS package manager, then npm install -g csslint

identify from ImageMagick

  • Required by org-mode to export org file to odt file when image embedded
  • Install through OS package manager

zip and unzip

  • Required by org-mode to export org file to odt file
  • Install through OS package manager

jshint

  • Install node.js through OS package manager, then npm install -g jshint
  • required by js-mode
  • by default I use js2-mode which does NOT need jshint

xsel

  • Required by my clipboard command copy-to-x-clipboard and paste-from-x-clipboard under Linux
  • Install through OS package manager

CMake

Clang

  • Required by cpputils-cmake, company-clang
  • Install through OS package manager
  • If you use cpputils-cmake and cmake, cpputils-cmake will do all the setup for you. You don’t need read next item! But please spend a few minutes to learn the basics of cmake! There is a one minute step-by-step-guide in README of cpputils-cmake to teach you how to use cmake.
  • If you use company-clang, add (setq company-clang-arguments '("-I/example1/dir" "-I/example2/dir")) into ~/.emacs.d/init.el

GCC/Make

  • Required by flymake
  • Install through OS package manager

MozRepl (Firefox addon)

  • Required by MozRepl
  • Used by Firefox

CTags

GNU Global

  • Required by ggtags.el
  • It creates index files for code navigation and auto-completion
  • More advanced than ctags, supports references and has better performance
  • Install through OS package manager

LibreOffice

  • Only the executable soffice is used when converting odt file into doc/pdf
  • conversion happens automatically when exporting org-mode to odt
  • The conversion command is in variable org-export-odt-convert-processes
  • Install through OS package manager

js-beautify

  • Beautify javascript code
  • Install pip through OS package manager, then pip install jsbeautifier

syntaxerl

jedi & flake8

  • Required by elpy which is python IDE
  • At least pip install jedi flake8. Check elpy website for more tips.

sdcv (console version of StarDict)

  • Required by sdcv.el
  • Install through OS package manager
  • Run curl http://abloz.com/huzheng/stardict-dic/dict.org/stardict-dictd_www.dict.org_wn-2.4.2.tar.bz2 | tar jx -C ~/.stardict/dic to install dictionary

the_silver_search (ag)

  • Search text in files
  • Required by `M-x my-grep`
  • Install through OS package manager

Usage

Tutorial (OPTIONAL)

~/.emacs.d/lisp/init-evil.el contains my most frequently used key bindings.

Basic tutorial

Everyone should finish this tutorial at first.

Step 1, learn OS basics

At minimum you need know,

Step 2, read official tutorial at least once

Press C-h t in Emacs (“C” means Ctrl key, “M” means Alt key) to read bundled tutorial.

At minimum you need know:

  • How to move cursor
  • How to read help by pressing C-h v and C-h f.

Step 3, know org-mode basics

Org-mode is for notes-keeping and planning.

Please watch the Carsten Dominik’s talk. It’s really simple. The only hot key to remember is Tab.

Step 4, what’s your real world problem

You can visit EmacsWiki for the solution. Newbies can ask for help at http://www.reddit.com/r/emacs/.

Evil-mode tutorial

Required for vim user,

  • Finish vimtutor.
  • Read ~/.emacs.d/site-lisp/evil/doc/evil.pdf

Methodology

See Master Emacs in One Year.

Key bindings

Key bindings are defined in ~/.emacs.d/lisp/init-evil.el.

For example, (nvmap :prefix "," "bu" 'backward-up-list) means pressing =,bu= will execute command backward-up-list.

The tutorials I recommended provide enough information about commands.

Besides, ”How to be extremely efficient in Emacs” lists my frequently used commands.

You can override my key bindings in ~/.custome.el.

FAQ

Color theme

Preview color theme

Check https://emacsthemes.com/.

Write down the name of color theme (for example, molokai).

Setup color theme manually (recommended)

Insert below code into “~/.emacs.d/lisp/init-color-theme.el”,

;; the color theme name "molokai"" could be replaced with other theme name
(require 'color-theme-molokai)
(color-theme-molokai)

M-x color-theme-select may not work because of some design flaw in Emacs.

There is NO unified way to enable color theme because two color theme systems exist. You need read color theme’s documentation at first.

My code works for most color themes.

If you insist on configuring the color theme in a different way, please,

  • Comment out the line containing (require 'init-color-theme) in ~/.emacs.d/init.el at first
  • Read EmacsWiki

Use color theme in terminal

Start Emacs this way,

TERM=xterm-256color emacs -nw

Toggle color theme

By default color-theme-molokai is used.

But you can run the M-x my-toggle-color-theme to switch to the fallback theme color-theme-deep-blue.

You can change the definition of my-toggle-color-theme in init-color-theme.el.

Start a shell inside Emacs

Please M-x multi-term.

If you want to use Zsh instead of Bash, please modify init-term-mode.el

Setup fonts in GUI Emacs

Non-Chinese use unicode-fonts.

Chinese use chinese-fonts-setup.

They are not included in this setup. You need install them manually.

Synchronize setup with Git

Synchronize from my stable setup which is updated every 6+ months:

git pull https://redguardtoo@github.com/redguardtoo/emacs.d.git stable

Or latest setup which is unstable:

git pull https://redguardtoo@github.com/redguardtoo/emacs.d.git

If you don’t like my commits, you can revert them:

# always start from the latest related commit
git revert commit-2014-12-01
git revert commit-2014-11-01

Indentation

Learn basics. Then use my solution.

Editing Lisp

Please note paredit-mode is enabled when editing Lisp. Search “paredit cheat sheet” to learn its key bindings.

Use smart-mode-line or powerline?

Comment out (require 'init-modeline) in init.el at first.

Key bindings doesn’t work?

Other desktop applications may intercept the key bindings. For example, someone reported QQ on windows 8 can intercept `M-x’.

Plugins doesn’t work?

If key bindings of multiple plugins conflict, I preserve the key bindings for the more frequently used plugin.

I re-assign the alternative key bindings to less used plugins. Check ~/.emacs.d/lisp/init-evil.el for details.

Use org-mode

Press M-x org-version, then read corresponding online manual to setup.

For example, org-capture need your manual setup.

OS X user?

Please replace legacy Emacs 22 and ctags with the new versions.

The easiest way is change Environment variable PATH.

Locked packages

Some packages (Evil, Web-mode …) are so important to my workflow so they are locked.

Those packages are placed at ~/.emacs.d/site-lisp.

They will not be upgraded through ELPA unless you delete them at ~/.emacs.d/site-lisp.

Customize global variables

Some variables are hard coded so you cannot “M-x customize” to modify them.

Here are the steps to change their values:

  • Find the variable description by M-x customize
  • For text “Company Clang Insert Arguments”, search company-clang-insert-argument in ~/.emacs.d/lisp/
  • You will find ~/.emacs.d/lisp/init-company.el and modify company-clang-insert-argument

BTW, please read my comments above the code at first.

Open file with Ido

If you press C-x C-f to open a file, Ido will show the suggestions.

Keep pressing C-f to ignore the suggestions.

Windows

I strongly suggest Cygwin version of Emacs. But native windows version is OK if it knows how to find the third party command line tools. Cygwin provides most of those tools by default. Add C:\Cygwin64\bin to environment variable PATH so Emacs can detect the tools automatically.

By default, environment variable HOME points to the directory C:\Users\<username> on Windows 7+. You need copy the folder .emacs.d into the directory.

Yasnippet key bindings

Instead of M-x yas-expand or press TAB key, you may press M-j instead.

Non-English users

Locale must be UTF-8 compatible. For example, as I type locale in shell, I got the output “zh_CN.UTF-8”.

Behind corporate firewall

Run below command in shell:

http_proxy=http://yourname:passwd@proxy.company.com:8080 emacs -nw

Government blocks the internet

You may need goagent. Run command http_proxy=http://127.0.0.1:8087 emacs -nw in shell after starting goagent server.

Email

If you use Gnus for email, check init-gnus.el and read my Gnus tutorial.

Cannot download ELPA packages?

Some package cannot be downloaded automatically because of network problem.

You could,

  • M-x list-packages to manually install it
  • Or M-x package-refresh-content and restart Emacs. the package will be installed automatically.

Disable Vim key bindings

By default EVIL (Vim emulation in Emacs) is used. Comment out line containing (require 'init-evil) in init.el to unload it.

Evil setup

It’s defined in ~/.emacs.d/lisp/init-evil.el. Press C-z to switch between Emacs and Vim key bindings.

Please read its PDF manual before using evil-mode.

C++ auto-completion doesn’t work?

I assume you are using company-mode. Other packages have similar setup.

There are many ways to scan the C++ source files and create the candidates used by company frontend. The Emacs Lisp code and command line tools to scan the C++ files are company backends. company-clang is a popular backend because Clang is good at processing C++.

If you use clang to parse the C++ code:

  • Make sure code is syntax correct
  • assign reasonable value into company-clang-arguments

Here is sample code:

(setq company-clang-arguments '("-I/home/myname/projs/test-cmake" "-I/home/myname/projs/test-cmake/inc"))

In “friendly” Visual C++, similar setup is required.

You can use other company backends instead of company-clang. For example, you can use company-gtags and GNU Global instead. See Emacs as C++ IDE, easy way for details.

Other backends produce less precise results but are more efficient and easier to setup.

Auto-completion for other languages

It’s similar to C++ setup. You can use company as frontend. But backend is the key. For example, you can’t use company-clang for PHP because Clang can’t handle PHP. But GNU Global supports PHP, so you can use company-gtags instead.

For languages GNU Global doesn’t support, you can always fallback to company-etags and CTags by using regular expression. Regular expressions could be place in ~/.ctags.

Chinese Input Method Editor

Run command M-x toggle-input-method to toggle input method. A 20M Chinese dictionary is already provided.

If your personal word file ~/.eim/pyim-personal.txt exists, it will be used.

Or else ~/.emacs.d/pyim/pyim-personal.txt will be created.

Install multiple versions of Emacs

Run below commands:

mkdir -p ~/tmp;
curl http://ftp.gnu.org/gnu/emacs/emacs-24.3.tar.gz | tar xvz -C ~/tmp/emacs-24.3
cd ~/tmp/emacs-24.3;
mkdir -p ~/myemacs/24.3;
rm -rf ~/myemacs/24.3/*;
./configure --prefix=~/myemacs/24.3 --without-x --without-dbus --without-sound && make && make install

Feel free to replace 24.3 with other version number.

Change Time Locale

Insert below code into ~/.emacs,

;; Use en_US locale to format time.
;; if not set, the OS locale is used.
(setq system-time-locale "C")

Directory structure

~/.emacs.d/init.el is the main file. It includes all the other *.el files.

~/.emacs.d/lisp/init-elpa.el defines what packages will be installed from MELPA.

Packages are installed into ~/.emacs.d/elpa/.

I also manually download and extract some packages into ~/.emacs.d/site-lisp/. Packages in ~/.emacs.d/site-lisp/ are not visible to the package manager.

My own snippets for Yasnippet is at ~/.emacs.d/snippets.

Other directories don’t matter.

About Emacs 23

Emacs 23 support was dropped on <2015-04-21>.

The latest Emacs23 compatible version of setup is 1.2!

Here are the steps to use that setup:

Since most third party plugins don’t support Emacs 23 any more, I strongly recommend upgrading to Emacs 24!

Tips

  • Never turn off any bundled mode if it’s on by default. Future version of Emacs may assume it’s on. Tweak its flag in mode hook instead!
  • Git skills are extremely useful. Please read the chapters “Git Basics”, “Git Branching”, “Git Tools” from Pro Git

Report bug

  • Please check EmacsWiki and my FAQ at first to find a solution
  • If your issue is still NOT resolved, restart Emacs with option ---debug-init, run M-x toggle-debug-on-error in Emacs, reproduce the issue
  • Send the error messages to the original developer if it’s third party package issue
  • If you are sure it’s my issue, file bug report at https://github.com/redguardtoo/emacs.d. Don’t email me directly!

Bug report should include details (OS, Emacs version …).