Bump version to 24.0.50.
[bpt/emacs.git] / doc / lispref / elisp.texi
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1\input texinfo @c -*-texinfo-*-
2@c %**start of header
3@setfilename elisp
4@settitle GNU Emacs Lisp Reference Manual
5@c %**end of header
6
7@c Version of the manual and of Emacs.
8@c Please remember to update the edition number in README as well.
f751a2ae 9@c And also the copies in vol1.texi and vol2.texi.
3a6aa965 10@set VERSION 3.0
288f9fc0 11@set EMACSVER 24.0.50
f751a2ae 12@set DATE July 2009
b8d4c8d0 13
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14@c in general, keep the following line commented out, unless doing a
15@c copy of this manual that will be published. The manual should go
16@c onto the distribution in the full, 8.5 x 11" size.
17@c set smallbook
18
19@ifset smallbook
20@smallbook
21@end ifset
22
23@c per rms and peterb, use 10pt fonts for the main text, mostly to
24@c save on paper cost.
25@c Do this inside @tex for now, so current makeinfo does not complain.
26@tex
27@ifset smallbook
28@fonttextsize 10
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29\global\let\urlcolor=\Black % don't print links in grayscale
30\global\let\linkcolor=\Black
31@end ifset
32\global\hbadness=6666 % don't worry about not-too-underfull boxes
33@end tex
34
35@c Combine indices.
36@synindex cp fn
37@syncodeindex vr fn
38@syncodeindex ky fn
39@syncodeindex pg fn
40@c We use the "type index" to index new functions and variables.
41@c @syncodeindex tp fn
42
43@copying
44This is edition @value{VERSION} of the GNU Emacs Lisp Reference Manual,@*
45corresponding to Emacs version @value{EMACSVER}.
46
47Copyright @copyright{} 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1998,
114f9c96 481999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010 Free Software
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49Foundation, Inc.
50
51@quotation
52Permission is granted to copy, distribute and/or modify this document
204d4665 53under the terms of the GNU Free Documentation License, Version 1.3 or
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54any later version published by the Free Software Foundation; with the
55Invariant Sections being ``GNU General Public License,'' with the
56Front-Cover texts being ``A GNU Manual,'' and with the Back-Cover
57Texts as in (a) below. A copy of the license is included in the
58section entitled ``GNU Free Documentation License.''
59
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60(a) The FSF's Back-Cover Text is: ``You have the freedom to copy and
61modify this GNU manual. Buying copies from the FSF supports it in
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62developing GNU and promoting software freedom.''
63@end quotation
64@end copying
65
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66@dircategory Emacs
67@direntry
68* Elisp: (elisp). The Emacs Lisp Reference Manual.
69@end direntry
70
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71@titlepage
72@title GNU Emacs Lisp Reference Manual
73@subtitle For Emacs Version @value{EMACSVER}
f751a2ae 74@subtitle Revision @value{VERSION}, @value{DATE}
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75
76@author by Bil Lewis, Dan LaLiberte, Richard Stallman
77@author and the GNU Manual Group
78@page
79@vskip 0pt plus 1filll
80@insertcopying
81
82@sp 2
83Published by the Free Software Foundation @*
8451 Franklin St, Fifth Floor @*
85Boston, MA 02110-1301 @*
86USA @*
87ISBN 1-882114-74-4
88
89@sp 2
90Cover art by Etienne Suvasa.
91@end titlepage
92
93
94@c Print the tables of contents
95@summarycontents
96@contents
97
98
99@ifnottex
100@node Top, Introduction, (dir), (dir)
101@top Emacs Lisp
102
5300838c 103@insertcopying
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104@end ifnottex
105
f751a2ae 106@c Copy any updates to vol1.texi and vol2.texi.
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107@menu
108* Introduction:: Introduction and conventions used.
109
110* Lisp Data Types:: Data types of objects in Emacs Lisp.
111* Numbers:: Numbers and arithmetic functions.
112* Strings and Characters:: Strings, and functions that work on them.
113* Lists:: Lists, cons cells, and related functions.
114* Sequences Arrays Vectors:: Lists, strings and vectors are called sequences.
115 Certain functions act on any kind of sequence.
116 The description of vectors is here as well.
117* Hash Tables:: Very fast lookup-tables.
118* Symbols:: Symbols represent names, uniquely.
119
120* Evaluation:: How Lisp expressions are evaluated.
121* Control Structures:: Conditionals, loops, nonlocal exits.
122* Variables:: Using symbols in programs to stand for values.
123* Functions:: A function is a Lisp program
124 that can be invoked from other functions.
125* Macros:: Macros are a way to extend the Lisp language.
126* Customization:: Writing customization declarations.
127
128* Loading:: Reading files of Lisp code into Lisp.
129* Byte Compilation:: Compilation makes programs run faster.
130* Advising Functions:: Adding to the definition of a function.
131* Debugging:: Tools and tips for debugging Lisp programs.
132
133* Read and Print:: Converting Lisp objects to text and back.
134* Minibuffers:: Using the minibuffer to read input.
135* Command Loop:: How the editor command loop works,
136 and how you can call its subroutines.
137* Keymaps:: Defining the bindings from keys to commands.
138* Modes:: Defining major and minor modes.
139* Documentation:: Writing and using documentation strings.
140
141* Files:: Accessing files.
142* Backups and Auto-Saving:: Controlling how backups and auto-save
143 files are made.
144* Buffers:: Creating and using buffer objects.
145* Windows:: Manipulating windows and displaying buffers.
146* Frames:: Making multiple system-level windows.
147* Positions:: Buffer positions and motion functions.
148* Markers:: Markers represent positions and update
149 automatically when the text is changed.
150
151* Text:: Examining and changing text in buffers.
152* Non-ASCII Characters:: Non-ASCII text in buffers and strings.
153* Searching and Matching:: Searching buffers for strings or regexps.
154* Syntax Tables:: The syntax table controls word and list parsing.
155* Abbrevs:: How Abbrev mode works, and its data structures.
156
157* Processes:: Running and communicating with subprocesses.
158* Display:: Features for controlling the screen display.
159* System Interface:: Getting the user id, system type, environment
160 variables, and other such things.
161
162Appendices
163
f751a2ae 164* Antinews:: Info for users downgrading to Emacs 22.
561c0216 165* GNU Free Documentation License:: The license for this documentation.
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166* GPL:: Conditions for copying and changing GNU Emacs.
167* Tips:: Advice and coding conventions for Emacs Lisp.
168* GNU Emacs Internals:: Building and dumping Emacs;
169 internal data structures.
170* Standard Errors:: List of all error symbols.
171* Standard Buffer-Local Variables::
172 List of variables buffer-local in all buffers.
173* Standard Keymaps:: List of standard keymaps.
174* Standard Hooks:: List of standard hook variables.
175
176* Index:: Index including concepts, functions, variables,
177 and other terms.
178
179@ignore
180* New Symbols:: New functions and variables in Emacs @value{EMACSVER}.
181@end ignore
182
183@c Do NOT modify the following 3 lines! They must have this form to
184@c be correctly identified by `texinfo-multiple-files-update'. In
185@c particular, the detailed menu header line MUST be identical to the
186@c value of `texinfo-master-menu-header'. See texnfo-upd.el.
f751a2ae 187@c Copy any updates to vol1.texi and vol2.texi.
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188
189@detailmenu
190 --- The Detailed Node Listing ---
191 ---------------------------------
192
193Here are other nodes that are inferiors of those already listed,
194mentioned here so you can get to them in one step:
195
196Introduction
197
198* Caveats:: Flaws and a request for help.
199* Lisp History:: Emacs Lisp is descended from Maclisp.
200* Conventions:: How the manual is formatted.
201* Version Info:: Which Emacs version is running?
202* Acknowledgements:: The authors, editors, and sponsors of this manual.
203
204Conventions
205
206* Some Terms:: Explanation of terms we use in this manual.
207* nil and t:: How the symbols @code{nil} and @code{t} are used.
208* Evaluation Notation:: The format we use for examples of evaluation.
561c0216 209* Printing Notation:: The format we use when examples print text.
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210* Error Messages:: The format we use for examples of errors.
211* Buffer Text Notation:: The format we use for buffer contents in examples.
212* Format of Descriptions:: Notation for describing functions, variables, etc.
213
214Format of Descriptions
215
216* A Sample Function Description:: A description of an imaginary
217 function, @code{foo}.
218* A Sample Variable Description:: A description of an imaginary
219 variable, @code{electric-future-map}.
220
221Lisp Data Types
222
223* Printed Representation:: How Lisp objects are represented as text.
224* Comments:: Comments and their formatting conventions.
225* Programming Types:: Types found in all Lisp systems.
226* Editing Types:: Types specific to Emacs.
121e43fd 227* Circular Objects:: Read syntax for circular structure.
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228* Type Predicates:: Tests related to types.
229* Equality Predicates:: Tests of equality between any two objects.
230
231Programming Types
232
233* Integer Type:: Numbers without fractional parts.
234* Floating Point Type:: Numbers with fractional parts and with a large range.
235* Character Type:: The representation of letters, numbers and
236 control characters.
237* Symbol Type:: A multi-use object that refers to a function,
561c0216 238 variable, or property list, and has a unique identity.
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239* Sequence Type:: Both lists and arrays are classified as sequences.
240* Cons Cell Type:: Cons cells, and lists (which are made from cons cells).
241* Array Type:: Arrays include strings and vectors.
242* String Type:: An (efficient) array of characters.
243* Vector Type:: One-dimensional arrays.
244* Char-Table Type:: One-dimensional sparse arrays indexed by characters.
245* Bool-Vector Type:: One-dimensional arrays of @code{t} or @code{nil}.
246* Hash Table Type:: Super-fast lookup tables.
247* Function Type:: A piece of executable code you can call from elsewhere.
248* Macro Type:: A method of expanding an expression into another
249 expression, more fundamental but less pretty.
250* Primitive Function Type:: A function written in C, callable from Lisp.
251* Byte-Code Type:: A function written in Lisp, then compiled.
252* Autoload Type:: A type used for automatically loading seldom-used
253 functions.
254
255Character Type
256
257* Basic Char Syntax:: Syntax for regular characters.
258* General Escape Syntax:: How to specify characters by their codes.
259* Ctl-Char Syntax:: Syntax for control characters.
260* Meta-Char Syntax:: Syntax for meta-characters.
261* Other Char Bits:: Syntax for hyper-, super-, and alt-characters.
262
263Cons Cell and List Types
264
265* Box Diagrams:: Drawing pictures of lists.
561c0216 266* Dotted Pair Notation:: A general syntax for cons cells.
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267* Association List Type:: A specially constructed list.
268
269String Type
270
271* Syntax for Strings:: How to specify Lisp strings.
272* Non-ASCII in Strings:: International characters in strings.
273* Nonprinting Characters:: Literal unprintable characters in strings.
274* Text Props and Strings:: Strings with text properties.
275
276Editing Types
277
278* Buffer Type:: The basic object of editing.
279* Marker Type:: A position in a buffer.
561c0216 280* Window Type:: Buffers are displayed in windows.
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281* Frame Type:: Windows subdivide frames.
282* Terminal Type:: A terminal device displays frames.
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283* Window Configuration Type:: Recording the way a frame is subdivided.
284* Frame Configuration Type:: Recording the status of all frames.
a65f6a85 285* Process Type:: A subprocess of Emacs running on the underlying OS.
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286* Stream Type:: Receive or send characters.
287* Keymap Type:: What function a keystroke invokes.
288* Overlay Type:: How an overlay is represented.
3a6aa965 289* Font Type:: Fonts for displaying text.
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290
291Numbers
292
293* Integer Basics:: Representation and range of integers.
294* Float Basics:: Representation and range of floating point.
295* Predicates on Numbers:: Testing for numbers.
296* Comparison of Numbers:: Equality and inequality predicates.
297* Numeric Conversions:: Converting float to integer and vice versa.
298* Arithmetic Operations:: How to add, subtract, multiply and divide.
299* Rounding Operations:: Explicitly rounding floating point numbers.
300* Bitwise Operations:: Logical and, or, not, shifting.
301* Math Functions:: Trig, exponential and logarithmic functions.
302* Random Numbers:: Obtaining random integers, predictable or not.
303
304Strings and Characters
305
306* String Basics:: Basic properties of strings and characters.
307* Predicates for Strings:: Testing whether an object is a string or char.
308* Creating Strings:: Functions to allocate new strings.
121e43fd 309* Modifying Strings:: Altering the contents of an existing string.
b8d4c8d0 310* Text Comparison:: Comparing characters or strings.
561c0216 311* String Conversion:: Converting to and from characters and strings.
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312* Formatting Strings:: @code{format}: Emacs's analogue of @code{printf}.
313* Case Conversion:: Case conversion functions.
314* Case Tables:: Customizing case conversion.
315
316Lists
317
318* Cons Cells:: How lists are made out of cons cells.
319* List-related Predicates:: Is this object a list? Comparing two lists.
320* List Elements:: Extracting the pieces of a list.
321* Building Lists:: Creating list structure.
322* List Variables:: Modifying lists stored in variables.
323* Modifying Lists:: Storing new pieces into an existing list.
324* Sets And Lists:: A list can represent a finite mathematical set.
325* Association Lists:: A list can represent a finite relation or mapping.
326* Rings:: Managing a fixed-size ring of objects.
327
328Modifying Existing List Structure
329
330* Setcar:: Replacing an element in a list.
331* Setcdr:: Replacing part of the list backbone.
332 This can be used to remove or add elements.
333* Rearrangement:: Reordering the elements in a list; combining lists.
334
335Sequences, Arrays, and Vectors
336
337* Sequence Functions:: Functions that accept any kind of sequence.
338* Arrays:: Characteristics of arrays in Emacs Lisp.
339* Array Functions:: Functions specifically for arrays.
340* Vectors:: Special characteristics of Emacs Lisp vectors.
341* Vector Functions:: Functions specifically for vectors.
342* Char-Tables:: How to work with char-tables.
343* Bool-Vectors:: How to work with bool-vectors.
344
345Hash Tables
346
347* Creating Hash:: Functions to create hash tables.
348* Hash Access:: Reading and writing the hash table contents.
561c0216 349* Defining Hash:: Defining new comparison methods.
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350* Other Hash:: Miscellaneous.
351
352Symbols
353
354* Symbol Components:: Symbols have names, values, function definitions
355 and property lists.
356* Definitions:: A definition says how a symbol will be used.
357* Creating Symbols:: How symbols are kept unique.
358* Property Lists:: Each symbol has a property list
359 for recording miscellaneous information.
360
361Property Lists
362
363* Plists and Alists:: Comparison of the advantages of property
364 lists and association lists.
365* Symbol Plists:: Functions to access symbols' property lists.
366* Other Plists:: Accessing property lists stored elsewhere.
367
368Evaluation
369
370* Intro Eval:: Evaluation in the scheme of things.
371* Forms:: How various sorts of objects are evaluated.
372* Quoting:: Avoiding evaluation (to put constants in
373 the program).
374* Eval:: How to invoke the Lisp interpreter explicitly.
375
376Kinds of Forms
377
378* Self-Evaluating Forms:: Forms that evaluate to themselves.
379* Symbol Forms:: Symbols evaluate as variables.
380* Classifying Lists:: How to distinguish various sorts of list forms.
381* Function Indirection:: When a symbol appears as the car of a list,
382 we find the real function via the symbol.
383* Function Forms:: Forms that call functions.
384* Macro Forms:: Forms that call macros.
385* Special Forms:: "Special forms" are idiosyncratic primitives,
386 most of them extremely important.
387* Autoloading:: Functions set up to load files
388 containing their real definitions.
389
390Control Structures
391
392* Sequencing:: Evaluation in textual order.
393* Conditionals:: @code{if}, @code{cond}, @code{when}, @code{unless}.
394* Combining Conditions:: @code{and}, @code{or}, @code{not}.
395* Iteration:: @code{while} loops.
396* Nonlocal Exits:: Jumping out of a sequence.
397
398Nonlocal Exits
399
400* Catch and Throw:: Nonlocal exits for the program's own purposes.
401* Examples of Catch:: Showing how such nonlocal exits can be written.
402* Errors:: How errors are signaled and handled.
403* Cleanups:: Arranging to run a cleanup form if an
404 error happens.
405
406Errors
407
408* Signaling Errors:: How to report an error.
409* Processing of Errors:: What Emacs does when you report an error.
410* Handling Errors:: How you can trap errors and continue execution.
411* Error Symbols:: How errors are classified for trapping them.
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412
413Variables
414
415* Global Variables:: Variable values that exist permanently, everywhere.
416* Constant Variables:: Certain "variables" have values that never change.
417* Local Variables:: Variable values that exist only temporarily.
418* Void Variables:: Symbols that lack values.
419* Defining Variables:: A definition says a symbol is used as a variable.
420* Tips for Defining:: Things you should think about when you
421 define a variable.
422* Accessing Variables:: Examining values of variables whose names
423 are known only at run time.
424* Setting Variables:: Storing new values in variables.
425* Variable Scoping:: How Lisp chooses among local and global values.
426* Buffer-Local Variables:: Variable values in effect only in one buffer.
b8d4c8d0 427* File Local Variables:: Handling local variable lists in files.
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428* Directory Local Variables:: Local variables common to all files in a
429 directory.
eaf4b689 430* Frame-Local Variables:: Frame-local bindings for variables.
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431* Variable Aliases:: Variables that are aliases for other variables.
432* Variables with Restricted Values:: Non-constant variables whose value can
433 @emph{not} be an arbitrary Lisp object.
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434
435Scoping Rules for Variable Bindings
436
437* Scope:: Scope means where in the program a value
438 is visible. Comparison with other languages.
439* Extent:: Extent means how long in time a value exists.
440* Impl of Scope:: Two ways to implement dynamic scoping.
441* Using Scoping:: How to use dynamic scoping carefully and
442 avoid problems.
443
444Buffer-Local Variables
445
446* Intro to Buffer-Local:: Introduction and concepts.
447* Creating Buffer-Local:: Creating and destroying buffer-local bindings.
448* Default Value:: The default value is seen in buffers
449 that don't have their own buffer-local values.
450
451Functions
452
561c0216 453* What Is a Function:: Lisp functions vs. primitives; terminology.
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454* Lambda Expressions:: How functions are expressed as Lisp objects.
455* Function Names:: A symbol can serve as the name of a function.
456* Defining Functions:: Lisp expressions for defining functions.
457* Calling Functions:: How to use an existing function.
458* Mapping Functions:: Applying a function to each element of a list, etc.
561c0216 459* Anonymous Functions:: Lambda expressions are functions with no names.
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460* Function Cells:: Accessing or setting the function definition
461 of a symbol.
462* Obsolete Functions:: Declaring functions obsolete.
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463* Inline Functions:: Defining functions that the compiler
464 will open code.
465* Declaring Functions:: Telling the compiler that a function is defined.
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466* Function Safety:: Determining whether a function is safe to call.
467* Related Topics:: Cross-references to specific Lisp primitives
468 that have a special bearing on how
469 functions work.
470
471Lambda Expressions
472
473* Lambda Components:: The parts of a lambda expression.
474* Simple Lambda:: A simple example.
475* Argument List:: Details and special features of argument lists.
476* Function Documentation:: How to put documentation in a function.
477
478Macros
479
480* Simple Macro:: A basic example.
481* Expansion:: How, when and why macros are expanded.
482* Compiling Macros:: How macros are expanded by the compiler.
483* Defining Macros:: How to write a macro definition.
484* Backquote:: Easier construction of list structure.
485* Problems with Macros:: Don't evaluate the macro arguments too many times.
486 Don't hide the user's variables.
487* Indenting Macros:: Specifying how to indent macro calls.
488
489Common Problems Using Macros
490
491* Wrong Time:: Do the work in the expansion, not in the macro.
492* Argument Evaluation:: The expansion should evaluate each macro arg once.
493* Surprising Local Vars:: Local variable bindings in the expansion
494 require special care.
495* Eval During Expansion:: Don't evaluate them; put them in the expansion.
496* Repeated Expansion:: Avoid depending on how many times expansion is done.
497
498Writing Customization Definitions
499
500* Common Keywords:: Common keyword arguments for all kinds of
501 customization declarations.
502* Group Definitions:: Writing customization group definitions.
503* Variable Definitions:: Declaring user options.
504* Customization Types:: Specifying the type of a user option.
505
506Customization Types
507
508* Simple Types:: Simple customization types: sexp, integer, number,
509 string, file, directory, alist.
510* Composite Types:: Build new types from other types or data.
511* Splicing into Lists:: Splice elements into list with @code{:inline}.
512* Type Keywords:: Keyword-argument pairs in a customization type.
513* Defining New Types:: Give your type a name.
514
515Loading
516
517* How Programs Do Loading:: The @code{load} function and others.
518* Load Suffixes:: Details about the suffixes that @code{load} tries.
519* Library Search:: Finding a library to load.
520* Loading Non-ASCII:: Non-@acronym{ASCII} characters in Emacs Lisp files.
521* Autoload:: Setting up a function to autoload.
522* Repeated Loading:: Precautions about loading a file twice.
523* Named Features:: Loading a library if it isn't already loaded.
524* Where Defined:: Finding which file defined a certain symbol.
525* Unloading:: How to "unload" a library that was loaded.
526* Hooks for Loading:: Providing code to be run when
527 particular libraries are loaded.
528
529Byte Compilation
530
531* Speed of Byte-Code:: An example of speedup from byte compilation.
532* Compilation Functions:: Byte compilation functions.
533* Docs and Compilation:: Dynamic loading of documentation strings.
534* Dynamic Loading:: Dynamic loading of individual functions.
535* Eval During Compile:: Code to be evaluated when you compile.
536* Compiler Errors:: Handling compiler error messages.
537* Byte-Code Objects:: The data type used for byte-compiled functions.
538* Disassembly:: Disassembling byte-code; how to read byte-code.
539
540Advising Emacs Lisp Functions
541
542* Simple Advice:: A simple example to explain the basics of advice.
543* Defining Advice:: Detailed description of @code{defadvice}.
544* Around-Advice:: Wrapping advice around a function's definition.
545* Computed Advice:: ...is to @code{defadvice} as @code{fset} is to @code{defun}.
546* Activation of Advice:: Advice doesn't do anything until you activate it.
547* Enabling Advice:: You can enable or disable each piece of advice.
548* Preactivation:: Preactivation is a way of speeding up the
549 loading of compiled advice.
550* Argument Access in Advice:: How advice can access the function's arguments.
551* Advising Primitives:: Accessing arguments when advising a primitive.
552* Combined Definition:: How advice is implemented.
553
554Debugging Lisp Programs
555
556* Debugger:: How the Emacs Lisp debugger is implemented.
557* Edebug:: A source-level Emacs Lisp debugger.
558* Syntax Errors:: How to find syntax errors.
559* Test Coverage:: Ensuring you have tested all branches in your code.
560* Compilation Errors:: How to find errors that show up in
561 byte compilation.
562
563The Lisp Debugger
564
565* Error Debugging:: Entering the debugger when an error happens.
566* Infinite Loops:: Stopping and debugging a program that doesn't exit.
567* Function Debugging:: Entering it when a certain function is called.
568* Explicit Debug:: Entering it at a certain point in the program.
569* Using Debugger:: What the debugger does; what you see while in it.
570* Debugger Commands:: Commands used while in the debugger.
571* Invoking the Debugger:: How to call the function @code{debug}.
572* Internals of Debugger:: Subroutines of the debugger, and global variables.
573
574Edebug
575
576* Using Edebug:: Introduction to use of Edebug.
577* Instrumenting:: You must instrument your code
578 in order to debug it with Edebug.
579* Edebug Execution Modes:: Execution modes, stopping more or less often.
580* Jumping:: Commands to jump to a specified place.
581* Edebug Misc:: Miscellaneous commands.
582* Breaks:: Setting breakpoints to make the program stop.
583* Trapping Errors:: Trapping errors with Edebug.
584* Edebug Views:: Views inside and outside of Edebug.
585* Edebug Eval:: Evaluating expressions within Edebug.
586* Eval List:: Expressions whose values are displayed
587 each time you enter Edebug.
588* Printing in Edebug:: Customization of printing.
589* Trace Buffer:: How to produce trace output in a buffer.
590* Coverage Testing:: How to test evaluation coverage.
591* The Outside Context:: Data that Edebug saves and restores.
592* Edebug and Macros:: Specifying how to handle macro calls.
593* Edebug Options:: Option variables for customizing Edebug.
594
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595Breaks
596
597* Breakpoints:: Breakpoints at stop points.
598* Global Break Condition:: Breaking on an event.
599* Source Breakpoints:: Embedding breakpoints in source code.
600
601The Outside Context
602
603* Checking Whether to Stop::When Edebug decides what to do.
604* Edebug Display Update:: When Edebug updates the display.
605* Edebug Recursive Edit:: When Edebug stops execution.
606
607Edebug and Macros
608
609* Instrumenting Macro Calls::The basic problem.
610* Specification List:: How to specify complex patterns of evaluation.
611* Backtracking:: What Edebug does when matching fails.
612* Specification Examples:: To help understand specifications.
613
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614Debugging Invalid Lisp Syntax
615
616* Excess Open:: How to find a spurious open paren or missing close.
617* Excess Close:: How to find a spurious close paren or missing open.
618
619Reading and Printing Lisp Objects
620
621* Streams Intro:: Overview of streams, reading and printing.
622* Input Streams:: Various data types that can be used as
623 input streams.
624* Input Functions:: Functions to read Lisp objects from text.
625* Output Streams:: Various data types that can be used as
626 output streams.
627* Output Functions:: Functions to print Lisp objects as text.
628* Output Variables:: Variables that control what the printing
629 functions do.
630
631Minibuffers
632
633* Intro to Minibuffers:: Basic information about minibuffers.
634* Text from Minibuffer:: How to read a straight text string.
635* Object from Minibuffer:: How to read a Lisp object or expression.
636* Minibuffer History:: Recording previous minibuffer inputs
637 so the user can reuse them.
638* Initial Input:: Specifying initial contents for the minibuffer.
639* Completion:: How to invoke and customize completion.
640* Yes-or-No Queries:: Asking a question with a simple answer.
641* Multiple Queries:: Asking a series of similar questions.
642* Reading a Password:: Reading a password from the terminal.
643* Minibuffer Commands:: Commands used as key bindings in minibuffers.
644* Minibuffer Contents:: How such commands access the minibuffer text.
645* Minibuffer Windows:: Operating on the special minibuffer windows.
646* Recursive Mini:: Whether recursive entry to minibuffer is allowed.
647* Minibuffer Misc:: Various customization hooks and variables.
648
649Completion
650
651* Basic Completion:: Low-level functions for completing strings.
652 (These are too low level to use the minibuffer.)
653* Minibuffer Completion:: Invoking the minibuffer with completion.
654* Completion Commands:: Minibuffer commands that do completion.
655* High-Level Completion:: Convenient special cases of completion
121e43fd 656 (reading buffer name, file name, etc.).
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657* Reading File Names:: Using completion to read file names and
658 shell commands.
745c5f7b 659* Completion Styles:: Specifying rules for performing completion.
561c0216 660* Programmed Completion:: Writing your own completion-function.
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661
662Command Loop
663
664* Command Overview:: How the command loop reads commands.
665* Defining Commands:: Specifying how a function should read arguments.
666* Interactive Call:: Calling a command, so that it will read arguments.
61bbdbc6 667* Distinguish Interactive:: Making a command distinguish interactive calls.
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668* Command Loop Info:: Variables set by the command loop for you to examine.
669* Adjusting Point:: Adjustment of point after a command.
670* Input Events:: What input looks like when you read it.
671* Reading Input:: How to read input events from the keyboard or mouse.
672* Special Events:: Events processed immediately and individually.
673* Waiting:: Waiting for user input or elapsed time.
674* Quitting:: How @kbd{C-g} works. How to catch or defer quitting.
675* Prefix Command Arguments:: How the commands to set prefix args work.
676* Recursive Editing:: Entering a recursive edit,
677 and why you usually shouldn't.
678* Disabling Commands:: How the command loop handles disabled commands.
679* Command History:: How the command history is set up, and how accessed.
680* Keyboard Macros:: How keyboard macros are implemented.
681
682Defining Commands
683
684* Using Interactive:: General rules for @code{interactive}.
685* Interactive Codes:: The standard letter-codes for reading arguments
686 in various ways.
687* Interactive Examples:: Examples of how to read interactive arguments.
688
689Input Events
690
691* Keyboard Events:: Ordinary characters--keys with symbols on them.
692* Function Keys:: Function keys--keys with names, not symbols.
693* Mouse Events:: Overview of mouse events.
694* Click Events:: Pushing and releasing a mouse button.
695* Drag Events:: Moving the mouse before releasing the button.
696* Button-Down Events:: A button was pushed and not yet released.
697* Repeat Events:: Double and triple click (or drag, or down).
698* Motion Events:: Just moving the mouse, not pushing a button.
699* Focus Events:: Moving the mouse between frames.
700* Misc Events:: Other events the system can generate.
701* Event Examples:: Examples of the lists for mouse events.
702* Classifying Events:: Finding the modifier keys in an event symbol.
561c0216 703 Event types.
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704* Accessing Mouse:: Functions to extract info from mouse events.
705* Accessing Scroll:: Functions to get info from scroll bar events.
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706* Strings of Events:: Special considerations for putting
707 keyboard character events in a string.
708
709Reading Input
710
711* Key Sequence Input:: How to read one key sequence.
712* Reading One Event:: How to read just one event.
713* Event Mod:: How Emacs modifies events as they are read.
714* Invoking the Input Method:: How reading an event uses the input method.
715* Quoted Character Input:: Asking the user to specify a character.
716* Event Input Misc:: How to reread or throw away input events.
717
718Keymaps
719
720* Key Sequences:: Key sequences as Lisp objects.
721* Keymap Basics:: Basic concepts of keymaps.
722* Format of Keymaps:: What a keymap looks like as a Lisp object.
723* Creating Keymaps:: Functions to create and copy keymaps.
724* Inheritance and Keymaps:: How one keymap can inherit the bindings
725 of another keymap.
726* Prefix Keys:: Defining a key with a keymap as its definition.
727* Active Keymaps:: How Emacs searches the active keymaps
728 for a key binding.
729* Searching Keymaps:: A pseudo-Lisp summary of searching active maps.
730* Controlling Active Maps:: Each buffer has a local keymap
731 to override the standard (global) bindings.
732 A minor mode can also override them.
561c0216 733* Key Lookup:: Finding a key's binding in one keymap.
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734* Functions for Key Lookup:: How to request key lookup.
735* Changing Key Bindings:: Redefining a key in a keymap.
736* Remapping Commands:: A keymap can translate one command to another.
737* Translation Keymaps:: Keymaps for translating sequences of events.
738* Key Binding Commands:: Interactive interfaces for redefining keys.
739* Scanning Keymaps:: Looking through all keymaps, for printing help.
561c0216 740* Menu Keymaps:: Defining a menu as a keymap.
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741
742Menu Keymaps
743
744* Defining Menus:: How to make a keymap that defines a menu.
745* Mouse Menus:: How users actuate the menu with the mouse.
746* Keyboard Menus:: How users actuate the menu with the keyboard.
747* Menu Example:: Making a simple menu.
748* Menu Bar:: How to customize the menu bar.
749* Tool Bar:: A tool bar is a row of images.
750* Modifying Menus:: How to add new items to a menu.
751
752Defining Menus
753
754* Simple Menu Items:: A simple kind of menu key binding,
755 limited in capabilities.
756* Extended Menu Items:: More powerful menu item definitions
757 let you specify keywords to enable
758 various features.
759* Menu Separators:: Drawing a horizontal line through a menu.
760* Alias Menu Items:: Using command aliases in menu items.
761
762Major and Minor Modes
763
764* Hooks:: How to use hooks; how to write code that provides hooks.
765* Major Modes:: Defining major modes.
766* Minor Modes:: Defining minor modes.
767* Mode Line Format:: Customizing the text that appears in the mode line.
768* Imenu:: How a mode can provide a menu
769 of definitions in the buffer.
770* Font Lock Mode:: How modes can highlight text according to syntax.
771* Desktop Save Mode:: How modes can have buffer state saved between
772 Emacs sessions.
773
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774Hooks
775
776* Running Hooks:: How to run a hook.
777* Setting Hooks:: How to put functions on a hook, or remove them.
778
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779Major Modes
780
781* Major Mode Basics::
782* Major Mode Conventions:: Coding conventions for keymaps, etc.
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783* Auto Major Mode:: How Emacs chooses the major mode automatically.
784* Mode Help:: Finding out how to use a mode.
785* Derived Modes:: Defining a new major mode based on another major
786 mode.
787* Generic Modes:: Defining a simple major mode that supports
788 comment syntax and Font Lock mode.
789* Mode Hooks:: Hooks run at the end of major mode functions.
561c0216 790* Example Major Modes:: Text mode and Lisp modes.
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791
792Minor Modes
793
794* Minor Mode Conventions:: Tips for writing a minor mode.
795* Keymaps and Minor Modes:: How a minor mode can have its own keymap.
796* Defining Minor Modes:: A convenient facility for defining minor modes.
797
798Mode Line Format
799
561c0216 800* Mode Line Basics:: Basic ideas of mode line control.
b8d4c8d0 801* Mode Line Data:: The data structure that controls the mode line.
561c0216 802* Mode Line Top:: The top level variable, mode-line-format.
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803* Mode Line Variables:: Variables used in that data structure.
804* %-Constructs:: Putting information into a mode line.
805* Properties in Mode:: Using text properties in the mode line.
806* Header Lines:: Like a mode line, but at the top.
807* Emulating Mode Line:: Formatting text as the mode line would.
808
809Font Lock Mode
810
811* Font Lock Basics:: Overview of customizing Font Lock.
812* Search-based Fontification:: Fontification based on regexps.
813* Customizing Keywords:: Customizing search-based fontification.
814* Other Font Lock Variables:: Additional customization facilities.
815* Levels of Font Lock:: Each mode can define alternative levels
816 so that the user can select more or less.
817* Precalculated Fontification:: How Lisp programs that produce the buffer
818 contents can also specify how to fontify it.
819* Faces for Font Lock:: Special faces specifically for Font Lock.
820* Syntactic Font Lock:: Fontification based on syntax tables.
821* Setting Syntax Properties:: Defining character syntax based on context
822 using the Font Lock mechanism.
823* Multiline Font Lock:: How to coerce Font Lock into properly
824 highlighting multiline constructs.
825
826Multiline Font Lock Constructs
827
561c0216 828* Font Lock Multiline:: Marking multiline chunks with a text property.
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829* Region to Fontify:: Controlling which region gets refontified
830 after a buffer change.
831
832Documentation
833
834* Documentation Basics:: Good style for doc strings.
835 Where to put them. How Emacs stores them.
836* Accessing Documentation:: How Lisp programs can access doc strings.
837* Keys in Documentation:: Substituting current key bindings.
838* Describing Characters:: Making printable descriptions of
839 non-printing characters and key sequences.
840* Help Functions:: Subroutines used by Emacs help facilities.
841
842Files
843
844* Visiting Files:: Reading files into Emacs buffers for editing.
845* Saving Buffers:: Writing changed buffers back into files.
561c0216 846* Reading from Files:: Reading files into buffers without visiting.
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847* Writing to Files:: Writing new files from parts of buffers.
848* File Locks:: Locking and unlocking files, to prevent
849 simultaneous editing by two people.
850* Information about Files:: Testing existence, accessibility, size of files.
851* Changing Files:: Renaming files, changing protection, etc.
852* File Names:: Decomposing and expanding file names.
853* Contents of Directories:: Getting a list of the files in a directory.
854* Create/Delete Dirs:: Creating and Deleting Directories.
855* Magic File Names:: Defining "magic" special handling
856 for certain file names.
857* Format Conversion:: Conversion to and from various file formats.
858
859Visiting Files
860
861* Visiting Functions:: The usual interface functions for visiting.
862* Subroutines of Visiting:: Lower-level subroutines that they use.
863
864Information about Files
865
866* Testing Accessibility:: Is a given file readable? Writable?
867* Kinds of Files:: Is it a directory? A symbolic link?
868* Truenames:: Eliminating symbolic links from a file name.
869* File Attributes:: How large is it? Any other names? Etc.
870* Locating Files:: How to find a file in standard places.
871
872File Names
873
874* File Name Components:: The directory part of a file name, and the rest.
561c0216 875* Relative File Names:: Some file names are relative to a current directory.
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876* Directory Names:: A directory's name as a directory
877 is different from its name as a file.
878* File Name Expansion:: Converting relative file names to absolute ones.
879* Unique File Names:: Generating names for temporary files.
880* File Name Completion:: Finding the completions for a given file name.
881* Standard File Names:: If your package uses a fixed file name,
882 how to handle various operating systems simply.
883
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884File Format Conversion
885
121e43fd 886* Format Conversion Overview:: @code{insert-file-contents} and @code{write-region}.
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887* Format Conversion Round-Trip:: Using @code{format-alist}.
888* Format Conversion Piecemeal:: Specifying non-paired conversion.
889
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890Backups and Auto-Saving
891
892* Backup Files:: How backup files are made; how their names
893 are chosen.
894* Auto-Saving:: How auto-save files are made; how their
895 names are chosen.
896* Reverting:: @code{revert-buffer}, and how to customize
897 what it does.
898
899Backup Files
900
901* Making Backups:: How Emacs makes backup files, and when.
902* Rename or Copy:: Two alternatives: renaming the old file
903 or copying it.
904* Numbered Backups:: Keeping multiple backups for each source file.
905* Backup Names:: How backup file names are computed; customization.
906
907Buffers
908
909* Buffer Basics:: What is a buffer?
910* Current Buffer:: Designating a buffer as current
561c0216 911 so that primitives will access its contents.
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912* Buffer Names:: Accessing and changing buffer names.
913* Buffer File Name:: The buffer file name indicates which file
914 is visited.
915* Buffer Modification:: A buffer is @dfn{modified} if it needs to be saved.
916* Modification Time:: Determining whether the visited file was changed
917 ``behind Emacs's back''.
918* Read Only Buffers:: Modifying text is not allowed in a
919 read-only buffer.
920* The Buffer List:: How to look at all the existing buffers.
921* Creating Buffers:: Functions that create buffers.
922* Killing Buffers:: Buffers exist until explicitly killed.
923* Indirect Buffers:: An indirect buffer shares text with some
924 other buffer.
acc8b598 925* Swapping Text:: Swapping text between two buffers.
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926* Buffer Gap:: The gap in the buffer.
927
928Windows
929
930* Basic Windows:: Basic information on using windows.
931* Splitting Windows:: Splitting one window into two windows.
932* Deleting Windows:: Deleting a window gives its space to other windows.
933* Selecting Windows:: The selected window is the one that you edit in.
934* Cyclic Window Ordering:: Moving around the existing windows.
935* Buffers and Windows:: Each window displays the contents of a buffer.
936* Displaying Buffers:: Higher-level functions for displaying a buffer
937 and choosing a window for it.
938* Choosing Window:: How to choose a window for displaying a buffer.
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939* Dedicated Windows:: How to avoid displaying another buffer in
940 a specific window.
b8d4c8d0 941* Window Point:: Each window has its own location of point.
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942* Window Start and End:: Buffer positions indicating which text is
943 on-screen in a window.
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944* Textual Scrolling:: Moving text up and down through the window.
945* Vertical Scrolling:: Moving the contents up and down on the window.
946* Horizontal Scrolling:: Moving the contents sideways on the window.
947* Size of Window:: Accessing the size of a window.
948* Resizing Windows:: Changing the size of a window.
949* Coordinates and Windows:: Converting coordinates to windows.
950* Window Tree:: The layout and sizes of all windows in a frame.
951* Window Configurations:: Saving and restoring the state of the screen.
efafc282 952* Window Parameters:: Associating additional information with windows.
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953* Window Hooks:: Hooks for scrolling, window size changes,
954 redisplay going past a certain point,
955 or window configuration changes.
956
957Frames
958
959* Creating Frames:: Creating additional frames.
3ec61d4e 960* Multiple Terminals:: Displaying on several different devices.
b8d4c8d0 961* Frame Parameters:: Controlling frame size, position, font, etc.
df05a163 962* Terminal Parameters:: Parameters common for all frames on terminal.
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963* Frame Titles:: Automatic updating of frame titles.
964* Deleting Frames:: Frames last until explicitly deleted.
965* Finding All Frames:: How to examine all existing frames.
966* Frames and Windows:: A frame contains windows;
967 display of text always works through windows.
968* Minibuffers and Frames:: How a frame finds the minibuffer to use.
969* Input Focus:: Specifying the selected frame.
970* Visibility of Frames:: Frames may be visible or invisible, or icons.
971* Raising and Lowering:: Raising a frame makes it hide other windows;
561c0216 972 lowering it makes the others hide it.
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973* Frame Configurations:: Saving the state of all frames.
974* Mouse Tracking:: Getting events that say when the mouse moves.
975* Mouse Position:: Asking where the mouse is, or moving it.
976* Pop-Up Menus:: Displaying a menu for the user to select from.
977* Dialog Boxes:: Displaying a box to ask yes or no.
978* Pointer Shape:: Specifying the shape of the mouse pointer.
561c0216 979* Window System Selections::Transferring text to and from other X clients.
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980* Drag and Drop:: Internals of Drag-and-Drop implementation.
981* Color Names:: Getting the definitions of color names.
982* Text Terminal Colors:: Defining colors for text-only terminals.
983* Resources:: Getting resource values from the server.
984* Display Feature Testing:: Determining the features of a terminal.
985
986Frame Parameters
987
988* Parameter Access:: How to change a frame's parameters.
989* Initial Parameters:: Specifying frame parameters when you make a frame.
990* Window Frame Parameters:: List of frame parameters for window systems.
991* Size and Position:: Changing the size and position of a frame.
992* Geometry:: Parsing geometry specifications.
993
994Window Frame Parameters
995
996* Basic Parameters:: Parameters that are fundamental.
997* Position Parameters:: The position of the frame on the screen.
998* Size Parameters:: Frame's size.
999* Layout Parameters:: Size of parts of the frame, and
1000 enabling or disabling some parts.
1001* Buffer Parameters:: Which buffers have been or should be shown.
1002* Management Parameters:: Communicating with the window manager.
1003* Cursor Parameters:: Controlling the cursor appearance.
561c0216 1004* Font and Color Parameters:: Fonts and colors for the frame text.
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1005
1006Positions
1007
1008* Point:: The special position where editing takes place.
1009* Motion:: Changing point.
1010* Excursions:: Temporary motion and buffer changes.
1011* Narrowing:: Restricting editing to a portion of the buffer.
1012
1013Motion
1014
1015* Character Motion:: Moving in terms of characters.
1016* Word Motion:: Moving in terms of words.
1017* Buffer End Motion:: Moving to the beginning or end of the buffer.
1018* Text Lines:: Moving in terms of lines of text.
1019* Screen Lines:: Moving in terms of lines as displayed.
1020* List Motion:: Moving by parsing lists and sexps.
1021* Skipping Characters:: Skipping characters belonging to a certain set.
1022
1023Markers
1024
1025* Overview of Markers:: The components of a marker, and how it relocates.
1026* Predicates on Markers:: Testing whether an object is a marker.
1027* Creating Markers:: Making empty markers or markers at certain places.
561c0216 1028* Information from Markers::Finding the marker's buffer or character position.
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1029* Marker Insertion Types:: Two ways a marker can relocate when you
1030 insert where it points.
1031* Moving Markers:: Moving the marker to a new buffer or position.
1032* The Mark:: How "the mark" is implemented with a marker.
1033* The Region:: How to access "the region".
1034
1035Text
1036
1037* Near Point:: Examining text in the vicinity of point.
1038* Buffer Contents:: Examining text in a general fashion.
1039* Comparing Text:: Comparing substrings of buffers.
1040* Insertion:: Adding new text to a buffer.
1041* Commands for Insertion:: User-level commands to insert text.
1042* Deletion:: Removing text from a buffer.
1043* User-Level Deletion:: User-level commands to delete text.
1044* The Kill Ring:: Where removed text sometimes is saved for
1045 later use.
1046* Undo:: Undoing changes to the text of a buffer.
1047* Maintaining Undo:: How to enable and disable undo information.
1048 How to control how much information is kept.
1049* Filling:: Functions for explicit filling.
1050* Margins:: How to specify margins for filling commands.
1051* Adaptive Fill:: Adaptive Fill mode chooses a fill prefix
1052 from context.
1053* Auto Filling:: How auto-fill mode is implemented to break lines.
1054* Sorting:: Functions for sorting parts of the buffer.
1055* Columns:: Computing horizontal positions, and using them.
1056* Indentation:: Functions to insert or adjust indentation.
1057* Case Changes:: Case conversion of parts of the buffer.
1058* Text Properties:: Assigning Lisp property lists to text characters.
1059* Substitution:: Replacing a given character wherever it appears.
1060* Transposition:: Swapping two portions of a buffer.
1061* Registers:: How registers are implemented. Accessing
1062 the text or position stored in a register.
1063* Base 64:: Conversion to or from base 64 encoding.
1064* MD5 Checksum:: Compute the MD5 "message digest"/"checksum".
1065* Atomic Changes:: Installing several buffer changes "atomically".
1066* Change Hooks:: Supplying functions to be run when text is changed.
1067
1068The Kill Ring
1069
1070* Kill Ring Concepts:: What text looks like in the kill ring.
1071* Kill Functions:: Functions that kill text.
1072* Yanking:: How yanking is done.
1073* Yank Commands:: Commands that access the kill ring.
1074* Low-Level Kill Ring:: Functions and variables for kill ring access.
561c0216 1075* Internals of Kill Ring:: Variables that hold kill ring data.
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1076
1077Indentation
1078
1079* Primitive Indent:: Functions used to count and insert indentation.
1080* Mode-Specific Indent:: Customize indentation for different modes.
1081* Region Indent:: Indent all the lines in a region.
1082* Relative Indent:: Indent the current line based on previous lines.
1083* Indent Tabs:: Adjustable, typewriter-like tab stops.
1084* Motion by Indent:: Move to first non-blank character.
1085
1086Text Properties
1087
1088* Examining Properties:: Looking at the properties of one character.
1089* Changing Properties:: Setting the properties of a range of text.
1090* Property Search:: Searching for where a property changes value.
1091* Special Properties:: Particular properties with special meanings.
1092* Format Properties:: Properties for representing formatting of text.
1093* Sticky Properties:: How inserted text gets properties from
1094 neighboring text.
1095* Lazy Properties:: Computing text properties in a lazy fashion
1096 only when text is examined.
1097* Clickable Text:: Using text properties to make regions of text
1098 do something when you click on them.
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1099* Fields:: The @code{field} property defines
1100 fields within the buffer.
1101* Not Intervals:: Why text properties do not use
1102 Lisp-visible text intervals.
1103
561c0216 1104Non-@acronym{ASCII} Characters
b8d4c8d0 1105
561c0216 1106* Text Representations:: How Emacs represents text.
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1107* Converting Representations:: Converting unibyte to multibyte and vice versa.
1108* Selecting a Representation:: Treating a byte sequence as unibyte or multi.
1109* Character Codes:: How unibyte and multibyte relate to
1110 codes of individual characters.
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1111* Character Properties:: Character attributes that define their
1112 behavior and handling.
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1113* Character Sets:: The space of possible character codes
1114 is divided into various character sets.
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1115* Scanning Charsets:: Which character sets are used in a buffer?
1116* Translation of Characters:: Translation tables are used for conversion.
1117* Coding Systems:: Coding systems are conversions for saving files.
1118* Input Methods:: Input methods allow users to enter various
1119 non-ASCII characters without special keyboards.
1120* Locales:: Interacting with the POSIX locale.
1121
1122Coding Systems
1123
1124* Coding System Basics:: Basic concepts.
1125* Encoding and I/O:: How file I/O functions handle coding systems.
1126* Lisp and Coding Systems:: Functions to operate on coding system names.
1127* User-Chosen Coding Systems:: Asking the user to choose a coding system.
1128* Default Coding Systems:: Controlling the default choices.
1129* Specifying Coding Systems:: Requesting a particular coding system
1130 for a single file operation.
1131* Explicit Encoding:: Encoding or decoding text without doing I/O.
1132* Terminal I/O Encoding:: Use of encoding for terminal I/O.
1133* MS-DOS File Types:: How DOS "text" and "binary" files
1134 relate to coding systems.
1135
1136Searching and Matching
1137
1138* String Search:: Search for an exact match.
1139* Searching and Case:: Case-independent or case-significant searching.
1140* Regular Expressions:: Describing classes of strings.
1141* Regexp Search:: Searching for a match for a regexp.
1142* POSIX Regexps:: Searching POSIX-style for the longest match.
1143* Match Data:: Finding out which part of the text matched,
1144 after a string or regexp search.
1145* Search and Replace:: Commands that loop, searching and replacing.
1146* Standard Regexps:: Useful regexps for finding sentences, pages,...
1147
1148Regular Expressions
1149
1150* Syntax of Regexps:: Rules for writing regular expressions.
1151* Regexp Example:: Illustrates regular expression syntax.
1152* Regexp Functions:: Functions for operating on regular expressions.
1153
1154Syntax of Regular Expressions
1155
1156* Regexp Special:: Special characters in regular expressions.
1157* Char Classes:: Character classes used in regular expressions.
1158* Regexp Backslash:: Backslash-sequences in regular expressions.
1159
1160The Match Data
1161
1162* Replacing Match:: Replacing a substring that was matched.
1163* Simple Match Data:: Accessing single items of match data,
1164 such as where a particular subexpression started.
1165* Entire Match Data:: Accessing the entire match data at once, as a list.
1166* Saving Match Data:: Saving and restoring the match data.
1167
1168Syntax Tables
1169
1170* Syntax Basics:: Basic concepts of syntax tables.
1171* Syntax Descriptors:: How characters are classified.
1172* Syntax Table Functions:: How to create, examine and alter syntax tables.
1173* Syntax Properties:: Overriding syntax with text properties.
1174* Motion and Syntax:: Moving over characters with certain syntaxes.
1175* Parsing Expressions:: Parsing balanced expressions
1176 using the syntax table.
1177* Standard Syntax Tables:: Syntax tables used by various major modes.
1178* Syntax Table Internals:: How syntax table information is stored.
1179* Categories:: Another way of classifying character syntax.
1180
1181Syntax Descriptors
1182
1183* Syntax Class Table:: Table of syntax classes.
1184* Syntax Flags:: Additional flags each character can have.
1185
1186Parsing Expressions
1187
1188* Motion via Parsing:: Motion functions that work by parsing.
1189* Position Parse:: Determining the syntactic state of a position.
1190* Parser State:: How Emacs represents a syntactic state.
1191* Low-Level Parsing:: Parsing across a specified region.
1192* Control Parsing:: Parameters that affect parsing.
1193
561c0216 1194Abbrevs and Abbrev Expansion
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1195
1196* Abbrev Mode:: Setting up Emacs for abbreviation.
1197* Abbrev Tables:: Creating and working with abbrev tables.
1198* Defining Abbrevs:: Specifying abbreviations and their expansions.
1199* Abbrev Files:: Saving abbrevs in files.
1200* Abbrev Expansion:: Controlling expansion; expansion subroutines.
1201* Standard Abbrev Tables:: Abbrev tables used by various major modes.
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1202* Abbrev Properties:: How to read and set abbrev properties.
1203 Which properties have which effect.
1204* Abbrev Table Properties:: How to read and set abbrev table properties.
1205 Which properties have which effect.
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1206
1207Processes
1208
1209* Subprocess Creation:: Functions that start subprocesses.
1210* Shell Arguments:: Quoting an argument to pass it to a shell.
1211* Synchronous Processes:: Details of using synchronous subprocesses.
1212* Asynchronous Processes:: Starting up an asynchronous subprocess.
1213* Deleting Processes:: Eliminating an asynchronous subprocess.
1214* Process Information:: Accessing run-status and other attributes.
1215* Input to Processes:: Sending input to an asynchronous subprocess.
1216* Signals to Processes:: Stopping, continuing or interrupting
1217 an asynchronous subprocess.
1218* Output from Processes:: Collecting output from an asynchronous subprocess.
1219* Sentinels:: Sentinels run when process run-status changes.
1220* Query Before Exit:: Whether to query if exiting will kill a process.
a65f6a85 1221* System Processes:: Accessing other processes running on your system.
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1222* Transaction Queues:: Transaction-based communication with subprocesses.
1223* Network:: Opening network connections.
1224* Network Servers:: Network servers let Emacs accept net connections.
1225* Datagrams:: UDP network connections.
1226* Low-Level Network:: Lower-level but more general function
1227 to create connections and servers.
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1228* Misc Network:: Additional relevant functions for
1229 network connections.
c73e02fa 1230* Serial Ports:: Communicating with serial ports.
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1231* Byte Packing:: Using bindat to pack and unpack binary data.
1232
1233Receiving Output from Processes
1234
1235* Process Buffers:: If no filter, output is put in a buffer.
1236* Filter Functions:: Filter functions accept output from the process.
1237* Decoding Output:: Filters can get unibyte or multibyte strings.
1238* Accepting Output:: How to wait until process output arrives.
1239
1240Low-Level Network Access
1241
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1242* Network Processes:: Using @code{make-network-process}.
1243* Network Options:: Further control over network connections.
1244* Network Feature Testing:: Determining which network features work on
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1245 the machine you are using.
1246
1247Packing and Unpacking Byte Arrays
1248
1249* Bindat Spec:: Describing data layout.
1250* Bindat Functions:: Doing the unpacking and packing.
1251* Bindat Examples:: Samples of what bindat.el can do for you!
1252
1253Emacs Display
1254
1255* Refresh Screen:: Clearing the screen and redrawing everything on it.
1256* Forcing Redisplay:: Forcing redisplay.
1257* Truncation:: Folding or wrapping long text lines.
1258* The Echo Area:: Displaying messages at the bottom of the screen.
1259* Warnings:: Displaying warning messages for the user.
1260* Invisible Text:: Hiding part of the buffer text.
1261* Selective Display:: Hiding part of the buffer text (the old way).
1262* Temporary Displays:: Displays that go away automatically.
1263* Overlays:: Use overlays to highlight parts of the buffer.
1264* Width:: How wide a character or string is on the screen.
1265* Line Height:: Controlling the height of lines.
1266* Faces:: A face defines a graphics style
1267 for text characters: font, colors, etc.
1268* Fringes:: Controlling window fringes.
1269* Scroll Bars:: Controlling vertical scroll bars.
1270* Display Property:: Enabling special display features.
1271* Images:: Displaying images in Emacs buffers.
1272* Buttons:: Adding clickable buttons to Emacs buffers.
1273* Abstract Display:: Emacs' Widget for Object Collections.
1274* Blinking:: How Emacs shows the matching open parenthesis.
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1275* Usual Display:: The usual conventions for displaying
1276 nonprinting chars.
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1277* Display Tables:: How to specify other conventions.
1278* Beeping:: Audible signal to the user.
1279* Window Systems:: Which window system is being used.
1280
1281The Echo Area
1282
1283* Displaying Messages:: Explicitly displaying text in the echo area.
1284* Progress:: Informing user about progress of a long operation.
1285* Logging Messages:: Echo area messages are logged for the user.
1286* Echo Area Customization:: Controlling the echo area.
1287
1288Reporting Warnings
1289
1290* Warning Basics:: Warnings concepts and functions to report them.
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1291* Warning Variables:: Variables programs bind to customize
1292 their warnings.
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1293* Warning Options:: Variables users set to control display of warnings.
1294
1295Overlays
1296
1297* Managing Overlays:: Creating and moving overlays.
1298* Overlay Properties:: How to read and set properties.
1299 What properties do to the screen display.
1300* Finding Overlays:: Searching for overlays.
1301
1302Faces
1303
1304* Defining Faces:: How to define a face with @code{defface}.
1305* Face Attributes:: What is in a face?
1306* Attribute Functions:: Functions to examine and set face attributes.
1307* Displaying Faces:: How Emacs combines the faces specified for
1308 a character.
606061b9 1309* Face Remapping:: Remapping faces to alternative definitions.
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1310* Face Functions:: How to define and examine faces.
1311* Auto Faces:: Hook for automatic face assignment.
606061b9 1312* Font Selection:: Finding the best available font for a face.
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1313* Font Lookup:: Looking up the names of available fonts
1314 and information about them.
1315* Fontsets:: A fontset is a collection of fonts
1316 that handle a range of character sets.
561c0216 1317* Low-Level Font:: Lisp representation for character display fonts.
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1318
1319Fringes
1320
1321* Fringe Size/Pos:: Specifying where to put the window fringes.
1322* Fringe Indicators:: Displaying indicator icons in the window fringes.
1323* Fringe Cursors:: Displaying cursors in the right fringe.
1324* Fringe Bitmaps:: Specifying bitmaps for fringe indicators.
1325* Customizing Bitmaps:: Specifying your own bitmaps to use in the fringes.
1326* Overlay Arrow:: Display of an arrow to indicate position.
1327
1328The @code{display} Property
1329
561c0216 1330* Replacing Specs:: Display specs that replace the text.
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1331* Specified Space:: Displaying one space with a specified width.
1332* Pixel Specification:: Specifying space width or height in pixels.
1333* Other Display Specs:: Displaying an image; magnifying text; moving it
1334 up or down on the page; adjusting the width
1335 of spaces within text.
1336* Display Margins:: Displaying text or images to the side of
1337 the main text.
1338
1339Images
1340
561c0216 1341* Image Formats:: Supported image formats.
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1342* Image Descriptors:: How to specify an image for use in @code{:display}.
1343* XBM Images:: Special features for XBM format.
1344* XPM Images:: Special features for XPM format.
1345* GIF Images:: Special features for GIF format.
561c0216 1346* TIFF Images:: Special features for TIFF format.
2833b3ff 1347* PostScript Images:: Special features for PostScript format.
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1348* Other Image Types:: Various other formats are supported.
1349* Defining Images:: Convenient ways to define an image for later use.
1350* Showing Images:: Convenient ways to display an image once
1351 it is defined.
1352* Image Cache:: Internal mechanisms of image display.
1353
1354Buttons
1355
1356* Button Properties:: Button properties with special meanings.
1357* Button Types:: Defining common properties for classes of buttons.
1358* Making Buttons:: Adding buttons to Emacs buffers.
1359* Manipulating Buttons:: Getting and setting properties of buttons.
1360* Button Buffer Commands:: Buffer-wide commands and bindings for buttons.
1361
1362Abstract Display
1363
1364* Abstract Display Functions:: Functions in the Ewoc package.
1365* Abstract Display Example:: Example of using Ewoc.
1366
1367Display Tables
1368
1369* Display Table Format:: What a display table consists of.
1370* Active Display Table:: How Emacs selects a display table to use.
1371* Glyphs:: How to define a glyph, and what glyphs mean.
1372
1373Operating System Interface
1374
561c0216 1375* Starting Up:: Customizing Emacs startup processing.
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1376* Getting Out:: How exiting works (permanent or temporary).
1377* System Environment:: Distinguish the name and kind of system.
1378* User Identification:: Finding the name and user id of the user.
1379* Time of Day:: Getting the current time.
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1380* Time Conversion:: Converting a time from numeric form to
1381 calendrical data and vice versa.
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1382* Time Parsing:: Converting a time from numeric form to text
1383 and vice versa.
1384* Processor Run Time:: Getting the run time used by Emacs.
1385* Time Calculations:: Adding, subtracting, comparing times, etc.
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1386* Timers:: Setting a timer to call a function at a
1387 certain time.
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1388* Idle Timers:: Setting a timer to call a function when Emacs has
1389 been idle for a certain length of time.
1390* Terminal Input:: Accessing and recording terminal input.
1391* Terminal Output:: Controlling and recording terminal output.
1392* Sound Output:: Playing sounds on the computer's speaker.
121e43fd 1393* X11 Keysyms:: Operating on key symbols for X Windows.
b8d4c8d0 1394* Batch Mode:: Running Emacs without terminal interaction.
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1395* Session Management:: Saving and restoring state with
1396 X Session Management.
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1397
1398Starting Up Emacs
1399
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1400* Startup Summary:: Sequence of actions Emacs performs at startup.
1401* Init File:: Details on reading the init file.
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1402* Terminal-Specific:: How the terminal-specific Lisp file is read.
1403* Command-Line Arguments:: How command-line arguments are processed,
1404 and how you can customize them.
1405
1406Getting Out of Emacs
1407
1408* Killing Emacs:: Exiting Emacs irreversibly.
1409* Suspending Emacs:: Exiting Emacs reversibly.
1410
1411Terminal Input
1412
1413* Input Modes:: Options for how input is processed.
1414* Recording Input:: Saving histories of recent or all input events.
1415
1416Tips and Conventions
1417
1418* Coding Conventions:: Conventions for clean and robust programs.
1419* Key Binding Conventions:: Which keys should be bound by which programs.
1420* Programming Tips:: Making Emacs code fit smoothly in Emacs.
1421* Compilation Tips:: Making compiled code run fast.
1422* Warning Tips:: Turning off compiler warnings.
1423* Documentation Tips:: Writing readable documentation strings.
1424* Comment Tips:: Conventions for writing comments.
1425* Library Headers:: Standard headers for library packages.
1426
1427GNU Emacs Internals
1428
1429* Building Emacs:: How the dumped Emacs is made.
1430* Pure Storage:: A kludge to make preloaded Lisp functions sharable.
1431* Garbage Collection:: Reclaiming space for Lisp objects no longer used.
1432* Memory Usage:: Info about total size of Lisp objects made so far.
1433* Writing Emacs Primitives:: Writing C code for Emacs.
1434* Object Internals:: Data formats of buffers, windows, processes.
1435
1436Object Internals
1437
1438* Buffer Internals:: Components of a buffer structure.
1439* Window Internals:: Components of a window structure.
1440* Process Internals:: Components of a process structure.
1441@end detailmenu
1442@end menu
1443
1444@include intro.texi
1445@include objects.texi
1446@include numbers.texi
1447@include strings.texi
1448
1449@include lists.texi
1450@include sequences.texi
1451@include hash.texi
1452@include symbols.texi
1453@include eval.texi
1454
1455@include control.texi
1456@include variables.texi
1457@include functions.texi
1458@include macros.texi
1459
1460@include customize.texi
1461@include loading.texi
1462@include compile.texi
1463@include advice.texi
1464
561c0216 1465@c This includes edebug.texi.
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1466@include debugging.texi
1467@include streams.texi
1468@include minibuf.texi
1469@include commands.texi
1470
1471@include keymaps.texi
1472@include modes.texi
1473@include help.texi
1474@include files.texi
1475
1476@include backups.texi
1477@include buffers.texi
1478@include windows.texi
1479@include frames.texi
1480
1481@include positions.texi
1482@include markers.texi
1483@include text.texi
1484@include nonascii.texi
1485
1486@include searching.texi
1487@include syntax.texi
1488@include abbrevs.texi
1489@include processes.texi
1490
1491@include display.texi
1492@include os.texi
1493
1494@c MOVE to Emacs Manual: include misc-modes.texi
1495
1496@c appendices
1497
1498@c REMOVE this: include non-hacker.texi
1499
1500@include anti.texi
1501@include doclicense.texi
1502@include gpl.texi
1503@include tips.texi
1504@include internals.texi
1505@include errors.texi
1506@include locals.texi
1507@include maps.texi
1508@include hooks.texi
1509
1510@include index.texi
1511
1512@ignore
1513@node New Symbols, , Index, Top
1514@unnumbered New Symbols Since the Previous Edition
1515
1516@printindex tp
1517@end ignore
1518
1519@bye
1520
1521\f
1522These words prevent "local variables" above from confusing Emacs.
1523
1524@ignore
1525 arch-tag: f7e9a219-a0e1-4776-b631-08eaa1d49b34
1526@end ignore