Epistemologically Multiple Actor-Centred System: Or, EMACS at Work!
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Bringing GNU Emacs to Native Code
Bringing GNU Emacs to Native Code Andrea Corallo Luca Nassi Nicola Manca [email protected] [email protected] [email protected] CNR-SPIN Genoa, Italy ABSTRACT such a long-standing project. Although this makes it didactic, some Emacs Lisp (Elisp) is the Lisp dialect used by the Emacs text editor limitations prevent the current implementation of Emacs Lisp to family. GNU Emacs can currently execute Elisp code either inter- be appealing for broader use. In this context, performance issues preted or byte-interpreted after it has been compiled to byte-code. represent the main bottleneck, which can be broken down in three In this work we discuss the implementation of an optimizing com- main sub-problems: piler approach for Elisp targeting native code. The native compiler • lack of true multi-threading support, employs the byte-compiler’s internal representation as input and • garbage collection speed, exploits libgccjit to achieve code generation using the GNU Com- • code execution speed. piler Collection (GCC) infrastructure. Generated executables are From now on we will focus on the last of these issues, which con- stored as binary files and can be loaded and unloaded dynamically. stitutes the topic of this work. Most of the functionality of the compiler is written in Elisp itself, The current implementation traditionally approaches the prob- including several optimization passes, paired with a C back-end lem of code execution speed in two ways: to interface with the GNU Emacs core and libgccjit. Though still a work in progress, our implementation is able to bootstrap a func- • Implementing a large number of performance-sensitive prim- tional Emacs and compile all lexically scoped Elisp files, including itive functions (also known as subr) in C. -
GNU Emacs Manual
GNU Emacs Manual GNU Emacs Manual Sixteenth Edition, Updated for Emacs Version 22.1. Richard Stallman This is the Sixteenth edition of the GNU Emacs Manual, updated for Emacs version 22.1. Copyright c 1985, 1986, 1987, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007 Free Software Foundation, Inc. Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation; with the Invariant Sections being \The GNU Manifesto," \Distribution" and \GNU GENERAL PUBLIC LICENSE," with the Front-Cover texts being \A GNU Manual," and with the Back-Cover Texts as in (a) below. A copy of the license is included in the section entitled \GNU Free Documentation License." (a) The FSF's Back-Cover Text is: \You have freedom to copy and modify this GNU Manual, like GNU software. Copies published by the Free Software Foundation raise funds for GNU development." Published by the Free Software Foundation 51 Franklin Street, Fifth Floor Boston, MA 02110-1301 USA ISBN 1-882114-86-8 Cover art by Etienne Suvasa. i Short Contents Preface ::::::::::::::::::::::::::::::::::::::::::::::::: 1 Distribution ::::::::::::::::::::::::::::::::::::::::::::: 2 Introduction ::::::::::::::::::::::::::::::::::::::::::::: 5 1 The Organization of the Screen :::::::::::::::::::::::::: 6 2 Characters, Keys and Commands ::::::::::::::::::::::: 11 3 Entering and Exiting Emacs ::::::::::::::::::::::::::: 15 4 Basic Editing -
The Oldest Rivalry in Computing Forget Apple Vs
Follow us on Twitter for more great Slate stories! Follow @slate BITWISE DECODING THE TECH WORLD. MAY 9 2014 9:57 AM The Oldest Rivalry in Computing Forget Apple vs. Google. Emacs and Vi have been battling for text-editor supremacy among programmers for 40 years. By David Auerbach An early Emacs manual cover from 1981. Courtesy of GNU Emacs n a world where both software and hardware frequently become obsolete right I on release, two rival programs can stake a claim to being among the longest-lived applications of all time. Both programs are about to enter their fifth decades. Both programs are text editors, for inputting and editing code, data files, raw HTML Web pages, and anything else. And they are mortal enemies. Their names are Emacs and Vi (styled by programmers as “vi”). These editors are legendary and ancient, no exaggeration. Both date back to at least 1976, making them older than the vast majority of people currently using them. Both programs are text editors, which means they are not WYSIWYG (what you see is what you get)—unlike, say, word processors like Microsoft Word, they do not format your words onscreen. Programming is very different from word processing, and the basic goal of Emacs and Vi—fast editing of source code (and any other text files)—has yet to become obsolete. Both have been in ongoing development for almost 40 years. These two wizened programs are as close to equally matched enemies as any two programs have ever been. If you know a programmer who uses one of them, there’s a good chance that she hates the other. -
Multimedia Systems DCAP303
Multimedia Systems DCAP303 MULTIMEDIA SYSTEMS Copyright © 2013 Rajneesh Agrawal All rights reserved Produced & Printed by EXCEL BOOKS PRIVATE LIMITED A-45, Naraina, Phase-I, New Delhi-110028 for Lovely Professional University Phagwara CONTENTS Unit 1: Multimedia 1 Unit 2: Text 15 Unit 3: Sound 38 Unit 4: Image 60 Unit 5: Video 102 Unit 6: Hardware 130 Unit 7: Multimedia Software Tools 165 Unit 8: Fundamental of Animations 178 Unit 9: Working with Animation 197 Unit 10: 3D Modelling and Animation Tools 213 Unit 11: Compression 233 Unit 12: Image Format 247 Unit 13: Multimedia Tools for WWW 266 Unit 14: Designing for World Wide Web 279 SYLLABUS Multimedia Systems Objectives: To impart the skills needed to develop multimedia applications. Students will learn: z how to combine different media on a web application, z various audio and video formats, z multimedia software tools that helps in developing multimedia application. Sr. No. Topics 1. Multimedia: Meaning and its usage, Stages of a Multimedia Project & Multimedia Skills required in a team 2. Text: Fonts & Faces, Using Text in Multimedia, Font Editing & Design Tools, Hypermedia & Hypertext. 3. Sound: Multimedia System Sounds, Digital Audio, MIDI Audio, Audio File Formats, MIDI vs Digital Audio, Audio CD Playback. Audio Recording. Voice Recognition & Response. 4. Images: Still Images – Bitmaps, Vector Drawing, 3D Drawing & rendering, Natural Light & Colors, Computerized Colors, Color Palletes, Image File Formats, Macintosh & Windows Formats, Cross – Platform format. 5. Animation: Principle of Animations. Animation Techniques, Animation File Formats. 6. Video: How Video Works, Broadcast Video Standards: NTSC, PAL, SECAM, ATSC DTV, Analog Video, Digital Video, Digital Video Standards – ATSC, DVB, ISDB, Video recording & Shooting Videos, Video Editing, Optimizing Video files for CD-ROM, Digital display standards. -
Getting Started Computing at the Al Lab by Christopher C. Stacy Abstract
MASSACHUSETTS INSTITUTE OF TECHNOLOGY ARTIFICIAL INTELLI..IGENCE LABORATORY WORKING PAPER 235 7 September 1982 Getting Started Computing at the Al Lab by Christopher C. Stacy Abstract This document describes the computing facilities at the M.I.T. Artificial Intelligence Laboratory, and explains how to get started using them. It is intended as an orientation document for newcomers to the lab, and will be updated by the author from time to time. A.I. Laboratory Working Papers are produced for internal circulation. and may contain information that is, for example, too preliminary or too detailed for formal publication. It is not intended that they should be considered papers to which reference can be made in the literature. a MASACHUSETS INSTITUTE OF TECHNOLOGY 1982 Getting Started Table of Contents Page i Table of Contents 1. Introduction 1 1.1. Lisp Machines 2 1.2. Timesharing 3 1.3. Other Computers 3 1.3.1. Field Engineering 3 1.3.2. Vision and Robotics 3 1.3.3. Music 4 1,3.4. Altos 4 1.4. Output Peripherals 4 1.5. Other Machines 5 1.6. Terminals 5 2. Networks 7 2.1. The ARPAnet 7 2.2. The Chaosnet 7 2.3. Services 8 2.3.1. TELNET/SUPDUP 8 2.3.2. FTP 8 2.4. Mail 9 2.4.1. Processing Mail 9 2.4.2. Ettiquette 9 2.5. Mailing Lists 10 2.5.1. BBoards 11 2.6. Finger/Inquire 11 2.7. TIPs and TACs 12 2.7.1. ARPAnet TAC 12 2.7.2. Chaosnet TIP 13 3. -
Openvms: an Introduction
The Operating System Handbook or, Fake Your Way Through Minis and Mainframes by Bob DuCharme VMS Table of Contents Chapter 7 OpenVMS: An Introduction.............................................................................. 7.1 History..........................................................................................................................2 7.1.1 Today........................................................................................................................3 7.1.1.1 Popular VMS Software..........................................................................................4 7.1.2 VMS, DCL................................................................................................................4 Chapter 8 Getting Started with OpenVMS........................................................................ 8.1 Starting Up...................................................................................................................7 8.1.1 Finishing Your VMS Session...................................................................................7 8.1.1.1 Reconnecting..........................................................................................................7 8.1.2 Entering Commands..................................................................................................8 8.1.2.1 Retrieving Previous Commands............................................................................9 8.1.2.2 Aborting Screen Output.........................................................................................9 -
Emacspeak User's Guide
Emacspeak User's Guide Jennifer Jobst Revision History Revision 1.3 July 24,2002 Revised by: SDS Updated the maintainer of this document to Sharon Snider, corrected links, and converted to HTML Revision 1.2 December 3, 2001 Revised by: JEJ Changed license to GFDL Revision 1.1 November 12, 2001 Revised by: JEJ Revision 1.0 DRAFT October 19, 2001 Revised by: JEJ This document helps Emacspeak users become familiar with Emacs as an audio desktop and provides tutorials on many common tasks and the Emacs applications available to perform those tasks. Emacspeak User's Guide Table of Contents 1. Legal Notice.....................................................................................................................................................1 2. Introduction.....................................................................................................................................................2 2.1. What is Emacspeak?.........................................................................................................................2 2.2. About this tutorial.............................................................................................................................2 3. Before you begin..............................................................................................................................................3 3.1. Getting started with Emacs and Emacspeak.....................................................................................3 3.2. Emacs Command Conventions.........................................................................................................3 -
An Introduction to ESS + Xemacs for Windows Users of R
An Introduction to ESS + XEmacs for Windows Users of R John Fox∗ McMaster University Revised: 23 January 2005 1WhyUseESS+XEmacs? Emacs is a powerful and widely used programmer’s editor. One of the principal attractions of Emacs is its programmability: Emacs can be adapted to provide customized support for program- ming languages, including such features as delimiter (e.g., parenthesis) matching, syntax highlight- ing, debugging, and version control. The ESS (“Emacs Speaks Statistics”) package provides such customization for several common statistical computing packages and programming environments, including the S family of languages (R and various versions of S-PLUS), SAS, and Stata, among others. The current document introduces the use of ESS with R running under Microsoft Windows. For some Unix/Linux users, Emacs is more a way of life than an editor: It is possible to do almost everything from within Emacs, including, of course, programming, but also writing documents in mark-up languages such as HTML and LATEX; reading and writing email; interacting with the Unix shell; web browsing; and so on. I expect that this kind of generalized use of Emacs will not be attractive to most Windows users, who will prefer to use familiar, and specialized, tools for most of these tasks. There are several versions of the Emacs editor, the two most common of which are GNU Emacs, a product of the Free Software Foundation, and XEmacs, an offshoot of GNU Emacs. Both of these implementations are free and are available for most computing platforms, including Windows. In my opinion, based only on limited experience, XEmacs offers certain advantages to Windows users, such as easier installation, and so I will explain the use of ESS under this version of the Emacs editor.1 As I am writing this, there are several Windows programming editors that have been customized for use with R. -
Learning the Vi Editor
Learning the vi Editor en.wikibooks.org December 29, 2013 On the 28th of April 2012 the contents of the English as well as German Wikibooks and Wikipedia projects were licensed under Creative Commons Attribution-ShareAlike 3.0 Unported license. A URI to this license is given in the list of figures on page 103. If this document is a derived work from the contents of one of these projects and the content was still licensed by the project under this license at the time of derivation this document has to be licensed under the same, a similar or a compatible license, as stated in section 4b of the license. The list of contributors is included in chapter Contributors on page 101. The licenses GPL, LGPL and GFDL are included in chapter Licenses on page 107, since this book and/or parts of it may or may not be licensed under one or more of these licenses, and thus require inclusion of these licenses. The licenses of the figures are given in the list of figures on page 103. This PDF was generated by the LATEX typesetting software. The LATEX source code is included as an attachment (source.7z.txt) in this PDF file. To extract the source from the PDF file, you can use the pdfdetach tool including in the poppler suite, or the http://www. pdflabs.com/tools/pdftk-the-pdf-toolkit/ utility. Some PDF viewers may also let you save the attachment to a file. After extracting it from the PDF file you have to rename it to source.7z. -
Texing in Emacs Them
30 TUGboat, Volume 39 (2018), No. 1 TEXing in Emacs them. I used a simple criterion: Emacs had a nice tutorial, and Vim apparently did not (at that time). Marcin Borkowski I wince at the very thought I might have chosen Abstract wrong! And so it went. I started with reading the In this paper I describe how I use GNU Emacs to manual [8]. As a student, I had a lot of free time work with LAT X. It is not a comprehensive survey E on my hands, so I basically read most of it. (I still of what can be done, but rather a subjective story recommend that to people who want to use Emacs about my personal usage. seriously.) I noticed that Emacs had a nice TEX In 2017, I gave a presentation [1] during the joint mode built-in, but also remembered from one of GUST/TUG conference at Bachotek. I talked about the BachoTEXs that other people had put together my experiences typesetting a journal (Wiadomo´sci something called AUCTEX, which was a TEX-mode Matematyczne, a journal of the Polish Mathematical on steroids. Society), and how I utilized LAT X and GNU Emacs E In the previous paragraph, I mentioned modes. in my workflow. After submitting my paper to the In order to understand what an Emacs mode is, let proceedings issue of TUGboat, Karl Berry asked me me explain what this whole Emacs thing is about. whether I'd like to prepare a paper about using Emacs with LATEX. 1 Basics of Emacs Well, I jumped at the proposal. -
The MH-E Manual Version 8.5 March, 2013
The MH-E Manual Version 8.5 March, 2013 Bill Wohler This is version 8.5 of The MH-E Manual, last updated 2013-03-02. Copyright c 1995, 2001{2003, 2005{2013 Free Software Foundation, Inc. Permission is granted to copy, distribute and/or modify this document under the terms of either: a. the GNU Free Documentation License, Version 1.3 or any later version published by the Free Software Foundation; with no Invariant Sections, with the Front-Cover texts being \A GNU Manual," and with the Back- Cover Texts as in (a) below. A copy of the license is included in the section entitled \GNU Free Documentation License." (a) The FSF's Back-Cover Text is: \You have the freedom to copy and modify this GNU manual." b. the GNU General Public License as published by the Free Software Foun- dation; either version 3, or (at your option) any later version. A copy of the license is included in the section entitled \GNU General Public License." i Table of Contents Preface :::::::::::::::::::::::::::::::::::::::::::::: 1 1 GNU Emacs Terms and Conventions ::::::::: 2 2 Getting Started ::::::::::::::::::::::::::::::::: 4 3 Tour Through MH-E ::::::::::::::::::::::::::: 6 3.1 Sending Mail ::::::::::::::::::::::::::::::::::::::::::::::::::: 6 3.2 Receiving Mail ::::::::::::::::::::::::::::::::::::::::::::::::: 7 3.3 Processing Mail :::::::::::::::::::::::::::::::::::::::::::::::: 7 3.4 Leaving MH-E ::::::::::::::::::::::::::::::::::::::::::::::::: 9 3.5 More About MH-E ::::::::::::::::::::::::::::::::::::::::::::: 9 4 Using This Manual :::::::::::::::::::::::::::: -
Introduction to Bioinformatics Introduction to Bioinformatics
Introduction to Bioinformatics Introduction to Bioinformatics Prof. Dr. Nizamettin AYDIN [email protected] Introduction to Perl http://www3.yildiz.edu.tr/~naydin 1 2 Learning objectives Setting The Technological Scene • After this lecture you should be able to • One of the objectives of this course is.. – to enable students to acquire an understanding of, and understand : ability in, a programming language (Perl, Python) as the – sequence, iteration and selection; main enabler in the development of computer programs in the area of Bioinformatics. – basic building blocks of programming; – three C’s: constants, comments and conditions; • Modern computers are organised around two main – use of variable containers; components: – use of some Perl operators and its pattern-matching technology; – Hardware – Perl input/output – Software – … 3 4 Introduction to the Computing Introduction to the Computing • Computer: electronic genius? • In theory, computer can compute anything – NO! Electronic idiot! • that’s possible to compute – Does exactly what we tell it to, nothing more. – given enough memory and time • All computers, given enough time and memory, • In practice, solving problems involves are capable of computing exactly the same things. computing under constraints. Supercomputer – time Workstation • weather forecast, next frame of animation, ... PDA – cost • cell phone, automotive engine controller, ... = = – power • cell phone, handheld video game, ... 5 6 Copyright 2000 N. AYDIN. All rights reserved. 1 Layers of Technology Layers of Technology • Operating system... – Interacts directly with the hardware – Responsible for ensuring efficient use of hardware resources • Tools... – Softwares that take adavantage of what the operating system has to offer. – Programming languages, databases, editors, interface builders... • Applications... – Most useful category of software – Web browsers, email clients, web servers, word processors, etc..