You are previewing Learning the vi and Vim Editors, 7th Edition.

Learning the vi and Vim Editors, 7th Edition

Cover of Learning the vi and Vim Editors, 7th Edition by Arnold Robbins... Published by O'Reilly Media, Inc.
  1. Dedication
  2. Special Upgrade Offer
  3. Preface
    1. Scope of This Book
    2. How the Material Is Presented
      1. Discussion of vi Commands
      2. Conventions
      3. Keystrokes
      4. Problem Checklist
    3. What You Need to Know Before Starting
    4. Comments and Questions
    5. Safari® Books Online
    6. About the Previous Editions
    7. Preface to the Seventh Edition
      1. What’s New
      2. Versions
      3. Acknowledgments from the Sixth Edition
      4. Acknowledgments for the Seventh Edition
  4. I. Basic and Advanced vi
    1. 1. The vi Text Editor
      1. A Brief Historical Perspective
      2. Opening and Closing Files
      3. Quitting Without Saving Edits
    2. 2. Simple Editing
      1. vi Commands
      2. Moving the Cursor
      3. Simple Edits
      4. More Ways to Insert Text
      5. Joining Two Lines with J
      6. Review of Basic vi Commands
    3. 3. Moving Around in a Hurry
      1. Movement by Screens
      2. Movement by Text Blocks
      3. Movement by Searches
      4. Movement by Line Number
      5. Review of vi Motion Commands
    4. 4. Beyond the Basics
      1. More Command Combinations
      2. Options When Starting vi
      3. Making Use of Buffers
      4. Marking Your Place
      5. Other Advanced Edits
      6. Review of vi Buffer and Marking Commands
    5. 5. Introducing the ex Editor
      1. ex Commands
      2. Editing with ex
      3. Saving and Exiting Files
      4. Copying a File into Another File
      5. Editing Multiple Files
    6. 6. Global Replacement
      1. Confirming Substitutions
      2. Context-Sensitive Replacement
      3. Pattern-Matching Rules
      4. Pattern-Matching Examples
      5. A Final Look at Pattern Matching
    7. 7. Advanced Editing
      1. Customizing vi
      2. Executing Unix Commands
      3. Saving Commands
      4. Using ex Scripts
      5. Editing Program Source Code
    8. 8. Introduction to the vi Clones
      1. And These Are My Brothers, Darrell, Darrell, and Darrell
      2. Multiwindow Editing
      3. GUI Interfaces
      4. Extended Regular Expressions
      5. Enhanced Tags
      6. Improved Facilities
      7. Programming Assistance
      8. Editor Comparison Summary
      9. Nothing Like the Original
      10. A Look Ahead
  5. II. Vim
    1. 9. Vim (vi Improved): An Introduction
      1. Overview
      2. Where to Get Vim
      3. Getting Vim for Unix and GNU/Linux
      4. Getting Vim for Windows Environments
      5. Getting Vim for the Macintosh Environment
      6. Other Operating Systems
      7. Aids and Easy Modes for New Users
      8. Summary
    2. 10. Major Vim Improvements over vi
      1. Built-in Help
      2. Startup and Initialization Options
      3. New Motion Commands
      4. Extended Regular Expressions
      5. Customizing the Executable
    3. 11. Multiple Windows in Vim
      1. Initiating Multiwindow Editing
      2. Opening Windows
      3. Moving Around Windows (Getting Your Cursor from Here to There)
      4. Moving Windows Around
      5. Resizing Windows
      6. Buffers and Their Interaction with Windows
      7. Playing Tag with Windows
      8. Tabbed Editing
      9. Closing and Quitting Windows
      10. Summary
    4. 12. Vim Scripts
      1. What’s Your Favorite Color (Scheme)?
      2. Dynamic File Type Configuration Through Scripting
      3. Some Additional Thoughts About Vim Scripting
      4. Resources
    5. 13. Graphical Vim (gvim)
      1. General Introduction to gvim
      2. Customizing Scrollbars, Menus, and Toolbars
      3. gvim in Microsoft Windows
      4. gvim in the X Window System
      5. GUI Options and Command Synopsis
    6. 14. Vim Enhancements for Programmers
      1. Folding and Outlining (Outline Mode)
      2. Auto and Smart Indenting
      3. Keyword and Dictionary Word Completion
      4. Tag Stacking
      5. Syntax Highlighting
      6. Compiling and Checking Errors with Vim
      7. Some Final Thoughts on Vim for Writing Programs
    7. 15. Other Cool Stuff in Vim
      1. Editing Binary Files
      2. Digraphs: Non-ASCII Characters
      3. Editing Files in Other Places
      4. Navigating and Changing Directories
      5. Backups with Vim
      6. HTML Your Text
      7. What’s the Difference?
      8. Undoing Undos
      9. Now, Where Was I?
      10. What’s My Line (Size)?
      11. Abbreviations of Vim Commands and Options
      12. A Few Quickies (Not Necessarily Vim-Specific)
      13. More Resources
  6. III. Other vi Clones
    1. 16. nvi: New vi
      1. Author and History
      2. Important Command-Line Arguments
      3. Online Help and Other Documentation
      4. Initialization
      5. Multiwindow Editing
      6. GUI Interfaces
      7. Extended Regular Expressions
      8. Improvements for Editing
      9. Programming Assistance
      10. Interesting Features
      11. Sources and Supported Operating Systems
    2. 17. Elvis
      1. Author and History
      2. Important Command-Line Arguments
      3. Online Help and Other Documentation
      4. Initialization
      5. Multiwindow Editing
      6. GUI Interfaces
      7. Extended Regular Expressions
      8. Improved Editing Facilities
      9. Programming Assistance
      10. Interesting Features
      11. elvis Futures
      12. Sources and Supported Operating Systems
    3. 18. vile: vi Like Emacs
      1. Authors and History
      2. Important Command-Line Arguments
      3. Online Help and Other Documentation
      4. Initialization
      5. Multiwindow Editing
      6. GUI Interfaces
      7. Extended Regular Expressions
      8. Improved Editing Facilities
      9. Programming Assistance
      10. Interesting Features
      11. Sources and Supported Operating Systems
  7. IV. Appendixes
    1. A. The vi, ex, and Vim Editors
      1. Command-Line Syntax
      2. Review of vi Operations
      3. vi Commands
      4. vi Configuration
      5. ex Basics
      6. Alphabetical Summary of ex Commands
    2. B. Setting Options
      1. Solaris vi Options
      2. nvi 1.79 Options
      3. elvis 2.2 Options
      4. Vim 7.1 Options
      5. vile 9.6 Options
    3. C. Problem Checklists
      1. Problems Opening Files
      2. Problems Saving Files
      3. Problems Getting to Visual Mode
      4. Problems with vi Commands
      5. Problems with Deletions
    4. D. vi and the Internet
      1. Where to Start
      2. vi Web Sites
      3. A Different vi Clone
      4. Amaze Your Friends!
      5. Tastes Great, Less Filling
      6. vi Quotes
  8. Index
  9. About the Authors
  10. Colophon
  11. Special Upgrade Offer
  12. Copyright
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Folding and Outlining (Outline Mode)

Folding lets you define what parts of the file you see. For instance, in a block of code you can hide anything within curly braces, or hide all comments. Folding is a two-stage process. First, using any of several fold methods (we’ll talk more about these later), you define what constitutes a block of text to fold. Then, when you use a fold command, Vim hides the designated text and leaves in its place a one-line placeholder. Figure 14-1 shows what folds look like in Vim. You can manage the lines hidden by the fold with the fold placeholder.

Example of Vim folds
Figure 14-1. Example of Vim folds

In the example, line 11 is hidden by a two-line fold starting with line 10. An eight-line fold starting at line 15 hides lines 16 through 22. And a four-line fold starting at line 26 hides lines 27 through 29.

There are virtually no limits on how many folds you can create. You can even create nested folds (folds within folds).

Several options control how Vim creates and displays folds. Also, if you’ve taken the time to create many folds, Vim provides the convenience commands :mkview and :loadview to preserve folds between sessions so you don’t have to create them again.

Folds require some effort to learn but, when mastered, add a powerful way to control what to display and when. Do not underestimate the power this brings. Correct and maintainable programs require robust design at ...

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