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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
d7ae78c0 11@set EMACSVER 23.1.50
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,
6ed161e1 481999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009 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
103This Info file contains edition @value{VERSION} of the GNU Emacs Lisp
104Reference Manual, corresponding to GNU Emacs version @value{EMACSVER}.
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105
106@insertcopying
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107@end ifnottex
108
f751a2ae 109@c Copy any updates to vol1.texi and vol2.texi.
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110@menu
111* Introduction:: Introduction and conventions used.
112
113* Lisp Data Types:: Data types of objects in Emacs Lisp.
114* Numbers:: Numbers and arithmetic functions.
115* Strings and Characters:: Strings, and functions that work on them.
116* Lists:: Lists, cons cells, and related functions.
117* Sequences Arrays Vectors:: Lists, strings and vectors are called sequences.
118 Certain functions act on any kind of sequence.
119 The description of vectors is here as well.
120* Hash Tables:: Very fast lookup-tables.
121* Symbols:: Symbols represent names, uniquely.
122
123* Evaluation:: How Lisp expressions are evaluated.
124* Control Structures:: Conditionals, loops, nonlocal exits.
125* Variables:: Using symbols in programs to stand for values.
126* Functions:: A function is a Lisp program
127 that can be invoked from other functions.
128* Macros:: Macros are a way to extend the Lisp language.
129* Customization:: Writing customization declarations.
130
131* Loading:: Reading files of Lisp code into Lisp.
132* Byte Compilation:: Compilation makes programs run faster.
133* Advising Functions:: Adding to the definition of a function.
134* Debugging:: Tools and tips for debugging Lisp programs.
135
136* Read and Print:: Converting Lisp objects to text and back.
137* Minibuffers:: Using the minibuffer to read input.
138* Command Loop:: How the editor command loop works,
139 and how you can call its subroutines.
140* Keymaps:: Defining the bindings from keys to commands.
141* Modes:: Defining major and minor modes.
142* Documentation:: Writing and using documentation strings.
143
144* Files:: Accessing files.
145* Backups and Auto-Saving:: Controlling how backups and auto-save
146 files are made.
147* Buffers:: Creating and using buffer objects.
148* Windows:: Manipulating windows and displaying buffers.
149* Frames:: Making multiple system-level windows.
150* Positions:: Buffer positions and motion functions.
151* Markers:: Markers represent positions and update
152 automatically when the text is changed.
153
154* Text:: Examining and changing text in buffers.
155* Non-ASCII Characters:: Non-ASCII text in buffers and strings.
156* Searching and Matching:: Searching buffers for strings or regexps.
157* Syntax Tables:: The syntax table controls word and list parsing.
158* Abbrevs:: How Abbrev mode works, and its data structures.
159
160* Processes:: Running and communicating with subprocesses.
161* Display:: Features for controlling the screen display.
162* System Interface:: Getting the user id, system type, environment
163 variables, and other such things.
164
165Appendices
166
f751a2ae 167* Antinews:: Info for users downgrading to Emacs 22.
561c0216 168* GNU Free Documentation License:: The license for this documentation.
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169* GPL:: Conditions for copying and changing GNU Emacs.
170* Tips:: Advice and coding conventions for Emacs Lisp.
171* GNU Emacs Internals:: Building and dumping Emacs;
172 internal data structures.
173* Standard Errors:: List of all error symbols.
174* Standard Buffer-Local Variables::
175 List of variables buffer-local in all buffers.
176* Standard Keymaps:: List of standard keymaps.
177* Standard Hooks:: List of standard hook variables.
178
179* Index:: Index including concepts, functions, variables,
180 and other terms.
181
182@ignore
183* New Symbols:: New functions and variables in Emacs @value{EMACSVER}.
184@end ignore
185
186@c Do NOT modify the following 3 lines! They must have this form to
187@c be correctly identified by `texinfo-multiple-files-update'. In
188@c particular, the detailed menu header line MUST be identical to the
189@c value of `texinfo-master-menu-header'. See texnfo-upd.el.
f751a2ae 190@c Copy any updates to vol1.texi and vol2.texi.
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191
192@detailmenu
193 --- The Detailed Node Listing ---
194 ---------------------------------
195
196Here are other nodes that are inferiors of those already listed,
197mentioned here so you can get to them in one step:
198
199Introduction
200
201* Caveats:: Flaws and a request for help.
202* Lisp History:: Emacs Lisp is descended from Maclisp.
203* Conventions:: How the manual is formatted.
204* Version Info:: Which Emacs version is running?
205* Acknowledgements:: The authors, editors, and sponsors of this manual.
206
207Conventions
208
209* Some Terms:: Explanation of terms we use in this manual.
210* nil and t:: How the symbols @code{nil} and @code{t} are used.
211* Evaluation Notation:: The format we use for examples of evaluation.
561c0216 212* Printing Notation:: The format we use when examples print text.
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213* Error Messages:: The format we use for examples of errors.
214* Buffer Text Notation:: The format we use for buffer contents in examples.
215* Format of Descriptions:: Notation for describing functions, variables, etc.
216
217Format of Descriptions
218
219* A Sample Function Description:: A description of an imaginary
220 function, @code{foo}.
221* A Sample Variable Description:: A description of an imaginary
222 variable, @code{electric-future-map}.
223
224Lisp Data Types
225
226* Printed Representation:: How Lisp objects are represented as text.
227* Comments:: Comments and their formatting conventions.
228* Programming Types:: Types found in all Lisp systems.
229* Editing Types:: Types specific to Emacs.
121e43fd 230* Circular Objects:: Read syntax for circular structure.
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231* Type Predicates:: Tests related to types.
232* Equality Predicates:: Tests of equality between any two objects.
233
234Programming Types
235
236* Integer Type:: Numbers without fractional parts.
237* Floating Point Type:: Numbers with fractional parts and with a large range.
238* Character Type:: The representation of letters, numbers and
239 control characters.
240* Symbol Type:: A multi-use object that refers to a function,
561c0216 241 variable, or property list, and has a unique identity.
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242* Sequence Type:: Both lists and arrays are classified as sequences.
243* Cons Cell Type:: Cons cells, and lists (which are made from cons cells).
244* Array Type:: Arrays include strings and vectors.
245* String Type:: An (efficient) array of characters.
246* Vector Type:: One-dimensional arrays.
247* Char-Table Type:: One-dimensional sparse arrays indexed by characters.
248* Bool-Vector Type:: One-dimensional arrays of @code{t} or @code{nil}.
249* Hash Table Type:: Super-fast lookup tables.
250* Function Type:: A piece of executable code you can call from elsewhere.
251* Macro Type:: A method of expanding an expression into another
252 expression, more fundamental but less pretty.
253* Primitive Function Type:: A function written in C, callable from Lisp.
254* Byte-Code Type:: A function written in Lisp, then compiled.
255* Autoload Type:: A type used for automatically loading seldom-used
256 functions.
257
258Character Type
259
260* Basic Char Syntax:: Syntax for regular characters.
261* General Escape Syntax:: How to specify characters by their codes.
262* Ctl-Char Syntax:: Syntax for control characters.
263* Meta-Char Syntax:: Syntax for meta-characters.
264* Other Char Bits:: Syntax for hyper-, super-, and alt-characters.
265
266Cons Cell and List Types
267
268* Box Diagrams:: Drawing pictures of lists.
561c0216 269* Dotted Pair Notation:: A general syntax for cons cells.
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270* Association List Type:: A specially constructed list.
271
272String Type
273
274* Syntax for Strings:: How to specify Lisp strings.
275* Non-ASCII in Strings:: International characters in strings.
276* Nonprinting Characters:: Literal unprintable characters in strings.
277* Text Props and Strings:: Strings with text properties.
278
279Editing Types
280
281* Buffer Type:: The basic object of editing.
282* Marker Type:: A position in a buffer.
561c0216 283* Window Type:: Buffers are displayed in windows.
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284* Frame Type:: Windows subdivide frames.
285* Terminal Type:: A terminal device displays frames.
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286* Window Configuration Type:: Recording the way a frame is subdivided.
287* Frame Configuration Type:: Recording the status of all frames.
a65f6a85 288* Process Type:: A subprocess of Emacs running on the underlying OS.
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289* Stream Type:: Receive or send characters.
290* Keymap Type:: What function a keystroke invokes.
291* Overlay Type:: How an overlay is represented.
3a6aa965 292* Font Type:: Fonts for displaying text.
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293
294Numbers
295
296* Integer Basics:: Representation and range of integers.
297* Float Basics:: Representation and range of floating point.
298* Predicates on Numbers:: Testing for numbers.
299* Comparison of Numbers:: Equality and inequality predicates.
300* Numeric Conversions:: Converting float to integer and vice versa.
301* Arithmetic Operations:: How to add, subtract, multiply and divide.
302* Rounding Operations:: Explicitly rounding floating point numbers.
303* Bitwise Operations:: Logical and, or, not, shifting.
304* Math Functions:: Trig, exponential and logarithmic functions.
305* Random Numbers:: Obtaining random integers, predictable or not.
306
307Strings and Characters
308
309* String Basics:: Basic properties of strings and characters.
310* Predicates for Strings:: Testing whether an object is a string or char.
311* Creating Strings:: Functions to allocate new strings.
121e43fd 312* Modifying Strings:: Altering the contents of an existing string.
b8d4c8d0 313* Text Comparison:: Comparing characters or strings.
561c0216 314* String Conversion:: Converting to and from characters and strings.
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315* Formatting Strings:: @code{format}: Emacs's analogue of @code{printf}.
316* Case Conversion:: Case conversion functions.
317* Case Tables:: Customizing case conversion.
318
319Lists
320
321* Cons Cells:: How lists are made out of cons cells.
322* List-related Predicates:: Is this object a list? Comparing two lists.
323* List Elements:: Extracting the pieces of a list.
324* Building Lists:: Creating list structure.
325* List Variables:: Modifying lists stored in variables.
326* Modifying Lists:: Storing new pieces into an existing list.
327* Sets And Lists:: A list can represent a finite mathematical set.
328* Association Lists:: A list can represent a finite relation or mapping.
329* Rings:: Managing a fixed-size ring of objects.
330
331Modifying Existing List Structure
332
333* Setcar:: Replacing an element in a list.
334* Setcdr:: Replacing part of the list backbone.
335 This can be used to remove or add elements.
336* Rearrangement:: Reordering the elements in a list; combining lists.
337
338Sequences, Arrays, and Vectors
339
340* Sequence Functions:: Functions that accept any kind of sequence.
341* Arrays:: Characteristics of arrays in Emacs Lisp.
342* Array Functions:: Functions specifically for arrays.
343* Vectors:: Special characteristics of Emacs Lisp vectors.
344* Vector Functions:: Functions specifically for vectors.
345* Char-Tables:: How to work with char-tables.
346* Bool-Vectors:: How to work with bool-vectors.
347
348Hash Tables
349
350* Creating Hash:: Functions to create hash tables.
351* Hash Access:: Reading and writing the hash table contents.
561c0216 352* Defining Hash:: Defining new comparison methods.
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353* Other Hash:: Miscellaneous.
354
355Symbols
356
357* Symbol Components:: Symbols have names, values, function definitions
358 and property lists.
359* Definitions:: A definition says how a symbol will be used.
360* Creating Symbols:: How symbols are kept unique.
361* Property Lists:: Each symbol has a property list
362 for recording miscellaneous information.
363
364Property Lists
365
366* Plists and Alists:: Comparison of the advantages of property
367 lists and association lists.
368* Symbol Plists:: Functions to access symbols' property lists.
369* Other Plists:: Accessing property lists stored elsewhere.
370
371Evaluation
372
373* Intro Eval:: Evaluation in the scheme of things.
374* Forms:: How various sorts of objects are evaluated.
375* Quoting:: Avoiding evaluation (to put constants in
376 the program).
377* Eval:: How to invoke the Lisp interpreter explicitly.
378
379Kinds of Forms
380
381* Self-Evaluating Forms:: Forms that evaluate to themselves.
382* Symbol Forms:: Symbols evaluate as variables.
383* Classifying Lists:: How to distinguish various sorts of list forms.
384* Function Indirection:: When a symbol appears as the car of a list,
385 we find the real function via the symbol.
386* Function Forms:: Forms that call functions.
387* Macro Forms:: Forms that call macros.
388* Special Forms:: "Special forms" are idiosyncratic primitives,
389 most of them extremely important.
390* Autoloading:: Functions set up to load files
391 containing their real definitions.
392
393Control Structures
394
395* Sequencing:: Evaluation in textual order.
396* Conditionals:: @code{if}, @code{cond}, @code{when}, @code{unless}.
397* Combining Conditions:: @code{and}, @code{or}, @code{not}.
398* Iteration:: @code{while} loops.
399* Nonlocal Exits:: Jumping out of a sequence.
400
401Nonlocal Exits
402
403* Catch and Throw:: Nonlocal exits for the program's own purposes.
404* Examples of Catch:: Showing how such nonlocal exits can be written.
405* Errors:: How errors are signaled and handled.
406* Cleanups:: Arranging to run a cleanup form if an
407 error happens.
408
409Errors
410
411* Signaling Errors:: How to report an error.
412* Processing of Errors:: What Emacs does when you report an error.
413* Handling Errors:: How you can trap errors and continue execution.
414* Error Symbols:: How errors are classified for trapping them.
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415
416Variables
417
418* Global Variables:: Variable values that exist permanently, everywhere.
419* Constant Variables:: Certain "variables" have values that never change.
420* Local Variables:: Variable values that exist only temporarily.
421* Void Variables:: Symbols that lack values.
422* Defining Variables:: A definition says a symbol is used as a variable.
423* Tips for Defining:: Things you should think about when you
424 define a variable.
425* Accessing Variables:: Examining values of variables whose names
426 are known only at run time.
427* Setting Variables:: Storing new values in variables.
428* Variable Scoping:: How Lisp chooses among local and global values.
429* Buffer-Local Variables:: Variable values in effect only in one buffer.
b8d4c8d0 430* File Local Variables:: Handling local variable lists in files.
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431* Directory Local Variables:: Local variables common to all files in a
432 directory.
eaf4b689 433* Frame-Local Variables:: Frame-local bindings for variables.
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434* Variable Aliases:: Variables that are aliases for other variables.
435* Variables with Restricted Values:: Non-constant variables whose value can
436 @emph{not} be an arbitrary Lisp object.
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437
438Scoping Rules for Variable Bindings
439
440* Scope:: Scope means where in the program a value
441 is visible. Comparison with other languages.
442* Extent:: Extent means how long in time a value exists.
443* Impl of Scope:: Two ways to implement dynamic scoping.
444* Using Scoping:: How to use dynamic scoping carefully and
445 avoid problems.
446
447Buffer-Local Variables
448
449* Intro to Buffer-Local:: Introduction and concepts.
450* Creating Buffer-Local:: Creating and destroying buffer-local bindings.
451* Default Value:: The default value is seen in buffers
452 that don't have their own buffer-local values.
453
454Functions
455
561c0216 456* What Is a Function:: Lisp functions vs. primitives; terminology.
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457* Lambda Expressions:: How functions are expressed as Lisp objects.
458* Function Names:: A symbol can serve as the name of a function.
459* Defining Functions:: Lisp expressions for defining functions.
460* Calling Functions:: How to use an existing function.
461* Mapping Functions:: Applying a function to each element of a list, etc.
561c0216 462* Anonymous Functions:: Lambda expressions are functions with no names.
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463* Function Cells:: Accessing or setting the function definition
464 of a symbol.
465* Obsolete Functions:: Declaring functions obsolete.
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466* Inline Functions:: Defining functions that the compiler
467 will open code.
468* Declaring Functions:: Telling the compiler that a function is defined.
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469* Function Safety:: Determining whether a function is safe to call.
470* Related Topics:: Cross-references to specific Lisp primitives
471 that have a special bearing on how
472 functions work.
473
474Lambda Expressions
475
476* Lambda Components:: The parts of a lambda expression.
477* Simple Lambda:: A simple example.
478* Argument List:: Details and special features of argument lists.
479* Function Documentation:: How to put documentation in a function.
480
481Macros
482
483* Simple Macro:: A basic example.
484* Expansion:: How, when and why macros are expanded.
485* Compiling Macros:: How macros are expanded by the compiler.
486* Defining Macros:: How to write a macro definition.
487* Backquote:: Easier construction of list structure.
488* Problems with Macros:: Don't evaluate the macro arguments too many times.
489 Don't hide the user's variables.
490* Indenting Macros:: Specifying how to indent macro calls.
491
492Common Problems Using Macros
493
494* Wrong Time:: Do the work in the expansion, not in the macro.
495* Argument Evaluation:: The expansion should evaluate each macro arg once.
496* Surprising Local Vars:: Local variable bindings in the expansion
497 require special care.
498* Eval During Expansion:: Don't evaluate them; put them in the expansion.
499* Repeated Expansion:: Avoid depending on how many times expansion is done.
500
501Writing Customization Definitions
502
503* Common Keywords:: Common keyword arguments for all kinds of
504 customization declarations.
505* Group Definitions:: Writing customization group definitions.
506* Variable Definitions:: Declaring user options.
507* Customization Types:: Specifying the type of a user option.
508
509Customization Types
510
511* Simple Types:: Simple customization types: sexp, integer, number,
512 string, file, directory, alist.
513* Composite Types:: Build new types from other types or data.
514* Splicing into Lists:: Splice elements into list with @code{:inline}.
515* Type Keywords:: Keyword-argument pairs in a customization type.
516* Defining New Types:: Give your type a name.
517
518Loading
519
520* How Programs Do Loading:: The @code{load} function and others.
521* Load Suffixes:: Details about the suffixes that @code{load} tries.
522* Library Search:: Finding a library to load.
523* Loading Non-ASCII:: Non-@acronym{ASCII} characters in Emacs Lisp files.
524* Autoload:: Setting up a function to autoload.
525* Repeated Loading:: Precautions about loading a file twice.
526* Named Features:: Loading a library if it isn't already loaded.
527* Where Defined:: Finding which file defined a certain symbol.
528* Unloading:: How to "unload" a library that was loaded.
529* Hooks for Loading:: Providing code to be run when
530 particular libraries are loaded.
531
532Byte Compilation
533
534* Speed of Byte-Code:: An example of speedup from byte compilation.
535* Compilation Functions:: Byte compilation functions.
536* Docs and Compilation:: Dynamic loading of documentation strings.
537* Dynamic Loading:: Dynamic loading of individual functions.
538* Eval During Compile:: Code to be evaluated when you compile.
539* Compiler Errors:: Handling compiler error messages.
540* Byte-Code Objects:: The data type used for byte-compiled functions.
541* Disassembly:: Disassembling byte-code; how to read byte-code.
542
543Advising Emacs Lisp Functions
544
545* Simple Advice:: A simple example to explain the basics of advice.
546* Defining Advice:: Detailed description of @code{defadvice}.
547* Around-Advice:: Wrapping advice around a function's definition.
548* Computed Advice:: ...is to @code{defadvice} as @code{fset} is to @code{defun}.
549* Activation of Advice:: Advice doesn't do anything until you activate it.
550* Enabling Advice:: You can enable or disable each piece of advice.
551* Preactivation:: Preactivation is a way of speeding up the
552 loading of compiled advice.
553* Argument Access in Advice:: How advice can access the function's arguments.
554* Advising Primitives:: Accessing arguments when advising a primitive.
555* Combined Definition:: How advice is implemented.
556
557Debugging Lisp Programs
558
559* Debugger:: How the Emacs Lisp debugger is implemented.
560* Edebug:: A source-level Emacs Lisp debugger.
561* Syntax Errors:: How to find syntax errors.
562* Test Coverage:: Ensuring you have tested all branches in your code.
563* Compilation Errors:: How to find errors that show up in
564 byte compilation.
565
566The Lisp Debugger
567
568* Error Debugging:: Entering the debugger when an error happens.
569* Infinite Loops:: Stopping and debugging a program that doesn't exit.
570* Function Debugging:: Entering it when a certain function is called.
571* Explicit Debug:: Entering it at a certain point in the program.
572* Using Debugger:: What the debugger does; what you see while in it.
573* Debugger Commands:: Commands used while in the debugger.
574* Invoking the Debugger:: How to call the function @code{debug}.
575* Internals of Debugger:: Subroutines of the debugger, and global variables.
576
577Edebug
578
579* Using Edebug:: Introduction to use of Edebug.
580* Instrumenting:: You must instrument your code
581 in order to debug it with Edebug.
582* Edebug Execution Modes:: Execution modes, stopping more or less often.
583* Jumping:: Commands to jump to a specified place.
584* Edebug Misc:: Miscellaneous commands.
585* Breaks:: Setting breakpoints to make the program stop.
586* Trapping Errors:: Trapping errors with Edebug.
587* Edebug Views:: Views inside and outside of Edebug.
588* Edebug Eval:: Evaluating expressions within Edebug.
589* Eval List:: Expressions whose values are displayed
590 each time you enter Edebug.
591* Printing in Edebug:: Customization of printing.
592* Trace Buffer:: How to produce trace output in a buffer.
593* Coverage Testing:: How to test evaluation coverage.
594* The Outside Context:: Data that Edebug saves and restores.
595* Edebug and Macros:: Specifying how to handle macro calls.
596* Edebug Options:: Option variables for customizing Edebug.
597
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598Breaks
599
600* Breakpoints:: Breakpoints at stop points.
601* Global Break Condition:: Breaking on an event.
602* Source Breakpoints:: Embedding breakpoints in source code.
603
604The Outside Context
605
606* Checking Whether to Stop::When Edebug decides what to do.
607* Edebug Display Update:: When Edebug updates the display.
608* Edebug Recursive Edit:: When Edebug stops execution.
609
610Edebug and Macros
611
612* Instrumenting Macro Calls::The basic problem.
613* Specification List:: How to specify complex patterns of evaluation.
614* Backtracking:: What Edebug does when matching fails.
615* Specification Examples:: To help understand specifications.
616
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617Debugging Invalid Lisp Syntax
618
619* Excess Open:: How to find a spurious open paren or missing close.
620* Excess Close:: How to find a spurious close paren or missing open.
621
622Reading and Printing Lisp Objects
623
624* Streams Intro:: Overview of streams, reading and printing.
625* Input Streams:: Various data types that can be used as
626 input streams.
627* Input Functions:: Functions to read Lisp objects from text.
628* Output Streams:: Various data types that can be used as
629 output streams.
630* Output Functions:: Functions to print Lisp objects as text.
631* Output Variables:: Variables that control what the printing
632 functions do.
633
634Minibuffers
635
636* Intro to Minibuffers:: Basic information about minibuffers.
637* Text from Minibuffer:: How to read a straight text string.
638* Object from Minibuffer:: How to read a Lisp object or expression.
639* Minibuffer History:: Recording previous minibuffer inputs
640 so the user can reuse them.
641* Initial Input:: Specifying initial contents for the minibuffer.
642* Completion:: How to invoke and customize completion.
643* Yes-or-No Queries:: Asking a question with a simple answer.
644* Multiple Queries:: Asking a series of similar questions.
645* Reading a Password:: Reading a password from the terminal.
646* Minibuffer Commands:: Commands used as key bindings in minibuffers.
647* Minibuffer Contents:: How such commands access the minibuffer text.
648* Minibuffer Windows:: Operating on the special minibuffer windows.
649* Recursive Mini:: Whether recursive entry to minibuffer is allowed.
650* Minibuffer Misc:: Various customization hooks and variables.
651
652Completion
653
654* Basic Completion:: Low-level functions for completing strings.
655 (These are too low level to use the minibuffer.)
656* Minibuffer Completion:: Invoking the minibuffer with completion.
657* Completion Commands:: Minibuffer commands that do completion.
658* High-Level Completion:: Convenient special cases of completion
121e43fd 659 (reading buffer name, file name, etc.).
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660* Reading File Names:: Using completion to read file names and
661 shell commands.
745c5f7b 662* Completion Styles:: Specifying rules for performing completion.
561c0216 663* Programmed Completion:: Writing your own completion-function.
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664
665Command Loop
666
667* Command Overview:: How the command loop reads commands.
668* Defining Commands:: Specifying how a function should read arguments.
669* Interactive Call:: Calling a command, so that it will read arguments.
61bbdbc6 670* Distinguish Interactive:: Making a command distinguish interactive calls.
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671* Command Loop Info:: Variables set by the command loop for you to examine.
672* Adjusting Point:: Adjustment of point after a command.
673* Input Events:: What input looks like when you read it.
674* Reading Input:: How to read input events from the keyboard or mouse.
675* Special Events:: Events processed immediately and individually.
676* Waiting:: Waiting for user input or elapsed time.
677* Quitting:: How @kbd{C-g} works. How to catch or defer quitting.
678* Prefix Command Arguments:: How the commands to set prefix args work.
679* Recursive Editing:: Entering a recursive edit,
680 and why you usually shouldn't.
681* Disabling Commands:: How the command loop handles disabled commands.
682* Command History:: How the command history is set up, and how accessed.
683* Keyboard Macros:: How keyboard macros are implemented.
684
685Defining Commands
686
687* Using Interactive:: General rules for @code{interactive}.
688* Interactive Codes:: The standard letter-codes for reading arguments
689 in various ways.
690* Interactive Examples:: Examples of how to read interactive arguments.
691
692Input Events
693
694* Keyboard Events:: Ordinary characters--keys with symbols on them.
695* Function Keys:: Function keys--keys with names, not symbols.
696* Mouse Events:: Overview of mouse events.
697* Click Events:: Pushing and releasing a mouse button.
698* Drag Events:: Moving the mouse before releasing the button.
699* Button-Down Events:: A button was pushed and not yet released.
700* Repeat Events:: Double and triple click (or drag, or down).
701* Motion Events:: Just moving the mouse, not pushing a button.
702* Focus Events:: Moving the mouse between frames.
703* Misc Events:: Other events the system can generate.
704* Event Examples:: Examples of the lists for mouse events.
705* Classifying Events:: Finding the modifier keys in an event symbol.
561c0216 706 Event types.
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707* Accessing Mouse:: Functions to extract info from mouse events.
708* Accessing Scroll:: Functions to get info from scroll bar events.
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709* Strings of Events:: Special considerations for putting
710 keyboard character events in a string.
711
712Reading Input
713
714* Key Sequence Input:: How to read one key sequence.
715* Reading One Event:: How to read just one event.
716* Event Mod:: How Emacs modifies events as they are read.
717* Invoking the Input Method:: How reading an event uses the input method.
718* Quoted Character Input:: Asking the user to specify a character.
719* Event Input Misc:: How to reread or throw away input events.
720
721Keymaps
722
723* Key Sequences:: Key sequences as Lisp objects.
724* Keymap Basics:: Basic concepts of keymaps.
725* Format of Keymaps:: What a keymap looks like as a Lisp object.
726* Creating Keymaps:: Functions to create and copy keymaps.
727* Inheritance and Keymaps:: How one keymap can inherit the bindings
728 of another keymap.
729* Prefix Keys:: Defining a key with a keymap as its definition.
730* Active Keymaps:: How Emacs searches the active keymaps
731 for a key binding.
732* Searching Keymaps:: A pseudo-Lisp summary of searching active maps.
733* Controlling Active Maps:: Each buffer has a local keymap
734 to override the standard (global) bindings.
735 A minor mode can also override them.
561c0216 736* Key Lookup:: Finding a key's binding in one keymap.
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737* Functions for Key Lookup:: How to request key lookup.
738* Changing Key Bindings:: Redefining a key in a keymap.
739* Remapping Commands:: A keymap can translate one command to another.
740* Translation Keymaps:: Keymaps for translating sequences of events.
741* Key Binding Commands:: Interactive interfaces for redefining keys.
742* Scanning Keymaps:: Looking through all keymaps, for printing help.
561c0216 743* Menu Keymaps:: Defining a menu as a keymap.
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744
745Menu Keymaps
746
747* Defining Menus:: How to make a keymap that defines a menu.
748* Mouse Menus:: How users actuate the menu with the mouse.
749* Keyboard Menus:: How users actuate the menu with the keyboard.
750* Menu Example:: Making a simple menu.
751* Menu Bar:: How to customize the menu bar.
752* Tool Bar:: A tool bar is a row of images.
753* Modifying Menus:: How to add new items to a menu.
754
755Defining Menus
756
757* Simple Menu Items:: A simple kind of menu key binding,
758 limited in capabilities.
759* Extended Menu Items:: More powerful menu item definitions
760 let you specify keywords to enable
761 various features.
762* Menu Separators:: Drawing a horizontal line through a menu.
763* Alias Menu Items:: Using command aliases in menu items.
764
765Major and Minor Modes
766
767* Hooks:: How to use hooks; how to write code that provides hooks.
768* Major Modes:: Defining major modes.
769* Minor Modes:: Defining minor modes.
770* Mode Line Format:: Customizing the text that appears in the mode line.
771* Imenu:: How a mode can provide a menu
772 of definitions in the buffer.
773* Font Lock Mode:: How modes can highlight text according to syntax.
774* Desktop Save Mode:: How modes can have buffer state saved between
775 Emacs sessions.
776
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777Hooks
778
779* Running Hooks:: How to run a hook.
780* Setting Hooks:: How to put functions on a hook, or remove them.
781
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782Major Modes
783
784* Major Mode Basics::
785* Major Mode Conventions:: Coding conventions for keymaps, etc.
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786* Auto Major Mode:: How Emacs chooses the major mode automatically.
787* Mode Help:: Finding out how to use a mode.
788* Derived Modes:: Defining a new major mode based on another major
789 mode.
790* Generic Modes:: Defining a simple major mode that supports
791 comment syntax and Font Lock mode.
792* Mode Hooks:: Hooks run at the end of major mode functions.
561c0216 793* Example Major Modes:: Text mode and Lisp modes.
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794
795Minor Modes
796
797* Minor Mode Conventions:: Tips for writing a minor mode.
798* Keymaps and Minor Modes:: How a minor mode can have its own keymap.
799* Defining Minor Modes:: A convenient facility for defining minor modes.
800
801Mode Line Format
802
561c0216 803* Mode Line Basics:: Basic ideas of mode line control.
b8d4c8d0 804* Mode Line Data:: The data structure that controls the mode line.
561c0216 805* Mode Line Top:: The top level variable, mode-line-format.
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806* Mode Line Variables:: Variables used in that data structure.
807* %-Constructs:: Putting information into a mode line.
808* Properties in Mode:: Using text properties in the mode line.
809* Header Lines:: Like a mode line, but at the top.
810* Emulating Mode Line:: Formatting text as the mode line would.
811
812Font Lock Mode
813
814* Font Lock Basics:: Overview of customizing Font Lock.
815* Search-based Fontification:: Fontification based on regexps.
816* Customizing Keywords:: Customizing search-based fontification.
817* Other Font Lock Variables:: Additional customization facilities.
818* Levels of Font Lock:: Each mode can define alternative levels
819 so that the user can select more or less.
820* Precalculated Fontification:: How Lisp programs that produce the buffer
821 contents can also specify how to fontify it.
822* Faces for Font Lock:: Special faces specifically for Font Lock.
823* Syntactic Font Lock:: Fontification based on syntax tables.
824* Setting Syntax Properties:: Defining character syntax based on context
825 using the Font Lock mechanism.
826* Multiline Font Lock:: How to coerce Font Lock into properly
827 highlighting multiline constructs.
828
829Multiline Font Lock Constructs
830
561c0216 831* Font Lock Multiline:: Marking multiline chunks with a text property.
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832* Region to Fontify:: Controlling which region gets refontified
833 after a buffer change.
834
835Documentation
836
837* Documentation Basics:: Good style for doc strings.
838 Where to put them. How Emacs stores them.
839* Accessing Documentation:: How Lisp programs can access doc strings.
840* Keys in Documentation:: Substituting current key bindings.
841* Describing Characters:: Making printable descriptions of
842 non-printing characters and key sequences.
843* Help Functions:: Subroutines used by Emacs help facilities.
844
845Files
846
847* Visiting Files:: Reading files into Emacs buffers for editing.
848* Saving Buffers:: Writing changed buffers back into files.
561c0216 849* Reading from Files:: Reading files into buffers without visiting.
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850* Writing to Files:: Writing new files from parts of buffers.
851* File Locks:: Locking and unlocking files, to prevent
852 simultaneous editing by two people.
853* Information about Files:: Testing existence, accessibility, size of files.
854* Changing Files:: Renaming files, changing protection, etc.
855* File Names:: Decomposing and expanding file names.
856* Contents of Directories:: Getting a list of the files in a directory.
857* Create/Delete Dirs:: Creating and Deleting Directories.
858* Magic File Names:: Defining "magic" special handling
859 for certain file names.
860* Format Conversion:: Conversion to and from various file formats.
861
862Visiting Files
863
864* Visiting Functions:: The usual interface functions for visiting.
865* Subroutines of Visiting:: Lower-level subroutines that they use.
866
867Information about Files
868
869* Testing Accessibility:: Is a given file readable? Writable?
870* Kinds of Files:: Is it a directory? A symbolic link?
871* Truenames:: Eliminating symbolic links from a file name.
872* File Attributes:: How large is it? Any other names? Etc.
873* Locating Files:: How to find a file in standard places.
874
875File Names
876
877* File Name Components:: The directory part of a file name, and the rest.
561c0216 878* Relative File Names:: Some file names are relative to a current directory.
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879* Directory Names:: A directory's name as a directory
880 is different from its name as a file.
881* File Name Expansion:: Converting relative file names to absolute ones.
882* Unique File Names:: Generating names for temporary files.
883* File Name Completion:: Finding the completions for a given file name.
884* Standard File Names:: If your package uses a fixed file name,
885 how to handle various operating systems simply.
886
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887File Format Conversion
888
121e43fd 889* Format Conversion Overview:: @code{insert-file-contents} and @code{write-region}.
561c0216
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890* Format Conversion Round-Trip:: Using @code{format-alist}.
891* Format Conversion Piecemeal:: Specifying non-paired conversion.
892
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893Backups and Auto-Saving
894
895* Backup Files:: How backup files are made; how their names
896 are chosen.
897* Auto-Saving:: How auto-save files are made; how their
898 names are chosen.
899* Reverting:: @code{revert-buffer}, and how to customize
900 what it does.
901
902Backup Files
903
904* Making Backups:: How Emacs makes backup files, and when.
905* Rename or Copy:: Two alternatives: renaming the old file
906 or copying it.
907* Numbered Backups:: Keeping multiple backups for each source file.
908* Backup Names:: How backup file names are computed; customization.
909
910Buffers
911
912* Buffer Basics:: What is a buffer?
913* Current Buffer:: Designating a buffer as current
561c0216 914 so that primitives will access its contents.
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915* Buffer Names:: Accessing and changing buffer names.
916* Buffer File Name:: The buffer file name indicates which file
917 is visited.
918* Buffer Modification:: A buffer is @dfn{modified} if it needs to be saved.
919* Modification Time:: Determining whether the visited file was changed
920 ``behind Emacs's back''.
921* Read Only Buffers:: Modifying text is not allowed in a
922 read-only buffer.
923* The Buffer List:: How to look at all the existing buffers.
924* Creating Buffers:: Functions that create buffers.
925* Killing Buffers:: Buffers exist until explicitly killed.
926* Indirect Buffers:: An indirect buffer shares text with some
927 other buffer.
acc8b598 928* Swapping Text:: Swapping text between two buffers.
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929* Buffer Gap:: The gap in the buffer.
930
931Windows
932
933* Basic Windows:: Basic information on using windows.
934* Splitting Windows:: Splitting one window into two windows.
935* Deleting Windows:: Deleting a window gives its space to other windows.
936* Selecting Windows:: The selected window is the one that you edit in.
937* Cyclic Window Ordering:: Moving around the existing windows.
938* Buffers and Windows:: Each window displays the contents of a buffer.
939* Displaying Buffers:: Higher-level functions for displaying a buffer
940 and choosing a window for it.
941* Choosing Window:: How to choose a window for displaying a buffer.
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942* Dedicated Windows:: How to avoid displaying another buffer in
943 a specific window.
b8d4c8d0 944* Window Point:: Each window has its own location of point.
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945* Window Start and End:: Buffer positions indicating which text is
946 on-screen in a window.
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947* Textual Scrolling:: Moving text up and down through the window.
948* Vertical Scrolling:: Moving the contents up and down on the window.
949* Horizontal Scrolling:: Moving the contents sideways on the window.
950* Size of Window:: Accessing the size of a window.
951* Resizing Windows:: Changing the size of a window.
952* Coordinates and Windows:: Converting coordinates to windows.
953* Window Tree:: The layout and sizes of all windows in a frame.
954* Window Configurations:: Saving and restoring the state of the screen.
efafc282 955* Window Parameters:: Associating additional information with windows.
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956* Window Hooks:: Hooks for scrolling, window size changes,
957 redisplay going past a certain point,
958 or window configuration changes.
959
960Frames
961
962* Creating Frames:: Creating additional frames.
3ec61d4e 963* Multiple Terminals:: Displaying on several different devices.
b8d4c8d0 964* Frame Parameters:: Controlling frame size, position, font, etc.
df05a163 965* Terminal Parameters:: Parameters common for all frames on terminal.
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966* Frame Titles:: Automatic updating of frame titles.
967* Deleting Frames:: Frames last until explicitly deleted.
968* Finding All Frames:: How to examine all existing frames.
969* Frames and Windows:: A frame contains windows;
970 display of text always works through windows.
971* Minibuffers and Frames:: How a frame finds the minibuffer to use.
972* Input Focus:: Specifying the selected frame.
973* Visibility of Frames:: Frames may be visible or invisible, or icons.
974* Raising and Lowering:: Raising a frame makes it hide other windows;
561c0216 975 lowering it makes the others hide it.
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976* Frame Configurations:: Saving the state of all frames.
977* Mouse Tracking:: Getting events that say when the mouse moves.
978* Mouse Position:: Asking where the mouse is, or moving it.
979* Pop-Up Menus:: Displaying a menu for the user to select from.
980* Dialog Boxes:: Displaying a box to ask yes or no.
981* Pointer Shape:: Specifying the shape of the mouse pointer.
561c0216 982* Window System Selections::Transferring text to and from other X clients.
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983* Drag and Drop:: Internals of Drag-and-Drop implementation.
984* Color Names:: Getting the definitions of color names.
985* Text Terminal Colors:: Defining colors for text-only terminals.
986* Resources:: Getting resource values from the server.
987* Display Feature Testing:: Determining the features of a terminal.
988
989Frame Parameters
990
991* Parameter Access:: How to change a frame's parameters.
992* Initial Parameters:: Specifying frame parameters when you make a frame.
993* Window Frame Parameters:: List of frame parameters for window systems.
994* Size and Position:: Changing the size and position of a frame.
995* Geometry:: Parsing geometry specifications.
996
997Window Frame Parameters
998
999* Basic Parameters:: Parameters that are fundamental.
1000* Position Parameters:: The position of the frame on the screen.
1001* Size Parameters:: Frame's size.
1002* Layout Parameters:: Size of parts of the frame, and
1003 enabling or disabling some parts.
1004* Buffer Parameters:: Which buffers have been or should be shown.
1005* Management Parameters:: Communicating with the window manager.
1006* Cursor Parameters:: Controlling the cursor appearance.
561c0216 1007* Font and Color Parameters:: Fonts and colors for the frame text.
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1008
1009Positions
1010
1011* Point:: The special position where editing takes place.
1012* Motion:: Changing point.
1013* Excursions:: Temporary motion and buffer changes.
1014* Narrowing:: Restricting editing to a portion of the buffer.
1015
1016Motion
1017
1018* Character Motion:: Moving in terms of characters.
1019* Word Motion:: Moving in terms of words.
1020* Buffer End Motion:: Moving to the beginning or end of the buffer.
1021* Text Lines:: Moving in terms of lines of text.
1022* Screen Lines:: Moving in terms of lines as displayed.
1023* List Motion:: Moving by parsing lists and sexps.
1024* Skipping Characters:: Skipping characters belonging to a certain set.
1025
1026Markers
1027
1028* Overview of Markers:: The components of a marker, and how it relocates.
1029* Predicates on Markers:: Testing whether an object is a marker.
1030* Creating Markers:: Making empty markers or markers at certain places.
561c0216 1031* Information from Markers::Finding the marker's buffer or character position.
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1032* Marker Insertion Types:: Two ways a marker can relocate when you
1033 insert where it points.
1034* Moving Markers:: Moving the marker to a new buffer or position.
1035* The Mark:: How "the mark" is implemented with a marker.
1036* The Region:: How to access "the region".
1037
1038Text
1039
1040* Near Point:: Examining text in the vicinity of point.
1041* Buffer Contents:: Examining text in a general fashion.
1042* Comparing Text:: Comparing substrings of buffers.
1043* Insertion:: Adding new text to a buffer.
1044* Commands for Insertion:: User-level commands to insert text.
1045* Deletion:: Removing text from a buffer.
1046* User-Level Deletion:: User-level commands to delete text.
1047* The Kill Ring:: Where removed text sometimes is saved for
1048 later use.
1049* Undo:: Undoing changes to the text of a buffer.
1050* Maintaining Undo:: How to enable and disable undo information.
1051 How to control how much information is kept.
1052* Filling:: Functions for explicit filling.
1053* Margins:: How to specify margins for filling commands.
1054* Adaptive Fill:: Adaptive Fill mode chooses a fill prefix
1055 from context.
1056* Auto Filling:: How auto-fill mode is implemented to break lines.
1057* Sorting:: Functions for sorting parts of the buffer.
1058* Columns:: Computing horizontal positions, and using them.
1059* Indentation:: Functions to insert or adjust indentation.
1060* Case Changes:: Case conversion of parts of the buffer.
1061* Text Properties:: Assigning Lisp property lists to text characters.
1062* Substitution:: Replacing a given character wherever it appears.
1063* Transposition:: Swapping two portions of a buffer.
1064* Registers:: How registers are implemented. Accessing
1065 the text or position stored in a register.
1066* Base 64:: Conversion to or from base 64 encoding.
1067* MD5 Checksum:: Compute the MD5 "message digest"/"checksum".
1068* Atomic Changes:: Installing several buffer changes "atomically".
1069* Change Hooks:: Supplying functions to be run when text is changed.
1070
1071The Kill Ring
1072
1073* Kill Ring Concepts:: What text looks like in the kill ring.
1074* Kill Functions:: Functions that kill text.
1075* Yanking:: How yanking is done.
1076* Yank Commands:: Commands that access the kill ring.
1077* Low-Level Kill Ring:: Functions and variables for kill ring access.
561c0216 1078* Internals of Kill Ring:: Variables that hold kill ring data.
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1079
1080Indentation
1081
1082* Primitive Indent:: Functions used to count and insert indentation.
1083* Mode-Specific Indent:: Customize indentation for different modes.
1084* Region Indent:: Indent all the lines in a region.
1085* Relative Indent:: Indent the current line based on previous lines.
1086* Indent Tabs:: Adjustable, typewriter-like tab stops.
1087* Motion by Indent:: Move to first non-blank character.
1088
1089Text Properties
1090
1091* Examining Properties:: Looking at the properties of one character.
1092* Changing Properties:: Setting the properties of a range of text.
1093* Property Search:: Searching for where a property changes value.
1094* Special Properties:: Particular properties with special meanings.
1095* Format Properties:: Properties for representing formatting of text.
1096* Sticky Properties:: How inserted text gets properties from
1097 neighboring text.
1098* Lazy Properties:: Computing text properties in a lazy fashion
1099 only when text is examined.
1100* Clickable Text:: Using text properties to make regions of text
1101 do something when you click on them.
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1102* Fields:: The @code{field} property defines
1103 fields within the buffer.
1104* Not Intervals:: Why text properties do not use
1105 Lisp-visible text intervals.
1106
561c0216 1107Non-@acronym{ASCII} Characters
b8d4c8d0 1108
561c0216 1109* Text Representations:: How Emacs represents text.
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1110* Converting Representations:: Converting unibyte to multibyte and vice versa.
1111* Selecting a Representation:: Treating a byte sequence as unibyte or multi.
1112* Character Codes:: How unibyte and multibyte relate to
1113 codes of individual characters.
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1114* Character Properties:: Character attributes that define their
1115 behavior and handling.
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1116* Character Sets:: The space of possible character codes
1117 is divided into various character sets.
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1118* Scanning Charsets:: Which character sets are used in a buffer?
1119* Translation of Characters:: Translation tables are used for conversion.
1120* Coding Systems:: Coding systems are conversions for saving files.
1121* Input Methods:: Input methods allow users to enter various
1122 non-ASCII characters without special keyboards.
1123* Locales:: Interacting with the POSIX locale.
1124
1125Coding Systems
1126
1127* Coding System Basics:: Basic concepts.
1128* Encoding and I/O:: How file I/O functions handle coding systems.
1129* Lisp and Coding Systems:: Functions to operate on coding system names.
1130* User-Chosen Coding Systems:: Asking the user to choose a coding system.
1131* Default Coding Systems:: Controlling the default choices.
1132* Specifying Coding Systems:: Requesting a particular coding system
1133 for a single file operation.
1134* Explicit Encoding:: Encoding or decoding text without doing I/O.
1135* Terminal I/O Encoding:: Use of encoding for terminal I/O.
1136* MS-DOS File Types:: How DOS "text" and "binary" files
1137 relate to coding systems.
1138
1139Searching and Matching
1140
1141* String Search:: Search for an exact match.
1142* Searching and Case:: Case-independent or case-significant searching.
1143* Regular Expressions:: Describing classes of strings.
1144* Regexp Search:: Searching for a match for a regexp.
1145* POSIX Regexps:: Searching POSIX-style for the longest match.
1146* Match Data:: Finding out which part of the text matched,
1147 after a string or regexp search.
1148* Search and Replace:: Commands that loop, searching and replacing.
1149* Standard Regexps:: Useful regexps for finding sentences, pages,...
1150
1151Regular Expressions
1152
1153* Syntax of Regexps:: Rules for writing regular expressions.
1154* Regexp Example:: Illustrates regular expression syntax.
1155* Regexp Functions:: Functions for operating on regular expressions.
1156
1157Syntax of Regular Expressions
1158
1159* Regexp Special:: Special characters in regular expressions.
1160* Char Classes:: Character classes used in regular expressions.
1161* Regexp Backslash:: Backslash-sequences in regular expressions.
1162
1163The Match Data
1164
1165* Replacing Match:: Replacing a substring that was matched.
1166* Simple Match Data:: Accessing single items of match data,
1167 such as where a particular subexpression started.
1168* Entire Match Data:: Accessing the entire match data at once, as a list.
1169* Saving Match Data:: Saving and restoring the match data.
1170
1171Syntax Tables
1172
1173* Syntax Basics:: Basic concepts of syntax tables.
1174* Syntax Descriptors:: How characters are classified.
1175* Syntax Table Functions:: How to create, examine and alter syntax tables.
1176* Syntax Properties:: Overriding syntax with text properties.
1177* Motion and Syntax:: Moving over characters with certain syntaxes.
1178* Parsing Expressions:: Parsing balanced expressions
1179 using the syntax table.
1180* Standard Syntax Tables:: Syntax tables used by various major modes.
1181* Syntax Table Internals:: How syntax table information is stored.
1182* Categories:: Another way of classifying character syntax.
1183
1184Syntax Descriptors
1185
1186* Syntax Class Table:: Table of syntax classes.
1187* Syntax Flags:: Additional flags each character can have.
1188
1189Parsing Expressions
1190
1191* Motion via Parsing:: Motion functions that work by parsing.
1192* Position Parse:: Determining the syntactic state of a position.
1193* Parser State:: How Emacs represents a syntactic state.
1194* Low-Level Parsing:: Parsing across a specified region.
1195* Control Parsing:: Parameters that affect parsing.
1196
561c0216 1197Abbrevs and Abbrev Expansion
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1198
1199* Abbrev Mode:: Setting up Emacs for abbreviation.
1200* Abbrev Tables:: Creating and working with abbrev tables.
1201* Defining Abbrevs:: Specifying abbreviations and their expansions.
1202* Abbrev Files:: Saving abbrevs in files.
1203* Abbrev Expansion:: Controlling expansion; expansion subroutines.
1204* Standard Abbrev Tables:: Abbrev tables used by various major modes.
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1205* Abbrev Properties:: How to read and set abbrev properties.
1206 Which properties have which effect.
1207* Abbrev Table Properties:: How to read and set abbrev table properties.
1208 Which properties have which effect.
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1209
1210Processes
1211
1212* Subprocess Creation:: Functions that start subprocesses.
1213* Shell Arguments:: Quoting an argument to pass it to a shell.
1214* Synchronous Processes:: Details of using synchronous subprocesses.
1215* Asynchronous Processes:: Starting up an asynchronous subprocess.
1216* Deleting Processes:: Eliminating an asynchronous subprocess.
1217* Process Information:: Accessing run-status and other attributes.
1218* Input to Processes:: Sending input to an asynchronous subprocess.
1219* Signals to Processes:: Stopping, continuing or interrupting
1220 an asynchronous subprocess.
1221* Output from Processes:: Collecting output from an asynchronous subprocess.
1222* Sentinels:: Sentinels run when process run-status changes.
1223* Query Before Exit:: Whether to query if exiting will kill a process.
a65f6a85 1224* System Processes:: Accessing other processes running on your system.
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1225* Transaction Queues:: Transaction-based communication with subprocesses.
1226* Network:: Opening network connections.
1227* Network Servers:: Network servers let Emacs accept net connections.
1228* Datagrams:: UDP network connections.
1229* Low-Level Network:: Lower-level but more general function
1230 to create connections and servers.
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1231* Misc Network:: Additional relevant functions for
1232 network connections.
c73e02fa 1233* Serial Ports:: Communicating with serial ports.
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1234* Byte Packing:: Using bindat to pack and unpack binary data.
1235
1236Receiving Output from Processes
1237
1238* Process Buffers:: If no filter, output is put in a buffer.
1239* Filter Functions:: Filter functions accept output from the process.
1240* Decoding Output:: Filters can get unibyte or multibyte strings.
1241* Accepting Output:: How to wait until process output arrives.
1242
1243Low-Level Network Access
1244
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1245* Network Processes:: Using @code{make-network-process}.
1246* Network Options:: Further control over network connections.
1247* Network Feature Testing:: Determining which network features work on
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1248 the machine you are using.
1249
1250Packing and Unpacking Byte Arrays
1251
1252* Bindat Spec:: Describing data layout.
1253* Bindat Functions:: Doing the unpacking and packing.
1254* Bindat Examples:: Samples of what bindat.el can do for you!
1255
1256Emacs Display
1257
1258* Refresh Screen:: Clearing the screen and redrawing everything on it.
1259* Forcing Redisplay:: Forcing redisplay.
1260* Truncation:: Folding or wrapping long text lines.
1261* The Echo Area:: Displaying messages at the bottom of the screen.
1262* Warnings:: Displaying warning messages for the user.
1263* Invisible Text:: Hiding part of the buffer text.
1264* Selective Display:: Hiding part of the buffer text (the old way).
1265* Temporary Displays:: Displays that go away automatically.
1266* Overlays:: Use overlays to highlight parts of the buffer.
1267* Width:: How wide a character or string is on the screen.
1268* Line Height:: Controlling the height of lines.
1269* Faces:: A face defines a graphics style
1270 for text characters: font, colors, etc.
1271* Fringes:: Controlling window fringes.
1272* Scroll Bars:: Controlling vertical scroll bars.
1273* Display Property:: Enabling special display features.
1274* Images:: Displaying images in Emacs buffers.
1275* Buttons:: Adding clickable buttons to Emacs buffers.
1276* Abstract Display:: Emacs' Widget for Object Collections.
1277* Blinking:: How Emacs shows the matching open parenthesis.
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1278* Usual Display:: The usual conventions for displaying
1279 nonprinting chars.
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1280* Display Tables:: How to specify other conventions.
1281* Beeping:: Audible signal to the user.
1282* Window Systems:: Which window system is being used.
1283
1284The Echo Area
1285
1286* Displaying Messages:: Explicitly displaying text in the echo area.
1287* Progress:: Informing user about progress of a long operation.
1288* Logging Messages:: Echo area messages are logged for the user.
1289* Echo Area Customization:: Controlling the echo area.
1290
1291Reporting Warnings
1292
1293* Warning Basics:: Warnings concepts and functions to report them.
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1294* Warning Variables:: Variables programs bind to customize
1295 their warnings.
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1296* Warning Options:: Variables users set to control display of warnings.
1297
1298Overlays
1299
1300* Managing Overlays:: Creating and moving overlays.
1301* Overlay Properties:: How to read and set properties.
1302 What properties do to the screen display.
1303* Finding Overlays:: Searching for overlays.
1304
1305Faces
1306
1307* Defining Faces:: How to define a face with @code{defface}.
1308* Face Attributes:: What is in a face?
1309* Attribute Functions:: Functions to examine and set face attributes.
1310* Displaying Faces:: How Emacs combines the faces specified for
1311 a character.
606061b9 1312* Face Remapping:: Remapping faces to alternative definitions.
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1313* Face Functions:: How to define and examine faces.
1314* Auto Faces:: Hook for automatic face assignment.
606061b9 1315* Font Selection:: Finding the best available font for a face.
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1316* Font Lookup:: Looking up the names of available fonts
1317 and information about them.
1318* Fontsets:: A fontset is a collection of fonts
1319 that handle a range of character sets.
561c0216 1320* Low-Level Font:: Lisp representation for character display fonts.
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1321
1322Fringes
1323
1324* Fringe Size/Pos:: Specifying where to put the window fringes.
1325* Fringe Indicators:: Displaying indicator icons in the window fringes.
1326* Fringe Cursors:: Displaying cursors in the right fringe.
1327* Fringe Bitmaps:: Specifying bitmaps for fringe indicators.
1328* Customizing Bitmaps:: Specifying your own bitmaps to use in the fringes.
1329* Overlay Arrow:: Display of an arrow to indicate position.
1330
1331The @code{display} Property
1332
561c0216 1333* Replacing Specs:: Display specs that replace the text.
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1334* Specified Space:: Displaying one space with a specified width.
1335* Pixel Specification:: Specifying space width or height in pixels.
1336* Other Display Specs:: Displaying an image; magnifying text; moving it
1337 up or down on the page; adjusting the width
1338 of spaces within text.
1339* Display Margins:: Displaying text or images to the side of
1340 the main text.
1341
1342Images
1343
561c0216 1344* Image Formats:: Supported image formats.
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1345* Image Descriptors:: How to specify an image for use in @code{:display}.
1346* XBM Images:: Special features for XBM format.
1347* XPM Images:: Special features for XPM format.
1348* GIF Images:: Special features for GIF format.
561c0216 1349* TIFF Images:: Special features for TIFF format.
2833b3ff 1350* PostScript Images:: Special features for PostScript format.
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1351* Other Image Types:: Various other formats are supported.
1352* Defining Images:: Convenient ways to define an image for later use.
1353* Showing Images:: Convenient ways to display an image once
1354 it is defined.
1355* Image Cache:: Internal mechanisms of image display.
1356
1357Buttons
1358
1359* Button Properties:: Button properties with special meanings.
1360* Button Types:: Defining common properties for classes of buttons.
1361* Making Buttons:: Adding buttons to Emacs buffers.
1362* Manipulating Buttons:: Getting and setting properties of buttons.
1363* Button Buffer Commands:: Buffer-wide commands and bindings for buttons.
1364
1365Abstract Display
1366
1367* Abstract Display Functions:: Functions in the Ewoc package.
1368* Abstract Display Example:: Example of using Ewoc.
1369
1370Display Tables
1371
1372* Display Table Format:: What a display table consists of.
1373* Active Display Table:: How Emacs selects a display table to use.
1374* Glyphs:: How to define a glyph, and what glyphs mean.
1375
1376Operating System Interface
1377
561c0216 1378* Starting Up:: Customizing Emacs startup processing.
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1379* Getting Out:: How exiting works (permanent or temporary).
1380* System Environment:: Distinguish the name and kind of system.
1381* User Identification:: Finding the name and user id of the user.
1382* Time of Day:: Getting the current time.
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1383* Time Conversion:: Converting a time from numeric form to
1384 calendrical data and vice versa.
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1385* Time Parsing:: Converting a time from numeric form to text
1386 and vice versa.
1387* Processor Run Time:: Getting the run time used by Emacs.
1388* Time Calculations:: Adding, subtracting, comparing times, etc.
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1389* Timers:: Setting a timer to call a function at a
1390 certain time.
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1391* Idle Timers:: Setting a timer to call a function when Emacs has
1392 been idle for a certain length of time.
1393* Terminal Input:: Accessing and recording terminal input.
1394* Terminal Output:: Controlling and recording terminal output.
1395* Sound Output:: Playing sounds on the computer's speaker.
121e43fd 1396* X11 Keysyms:: Operating on key symbols for X Windows.
b8d4c8d0 1397* Batch Mode:: Running Emacs without terminal interaction.
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1398* Session Management:: Saving and restoring state with
1399 X Session Management.
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1400
1401Starting Up Emacs
1402
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1403* Startup Summary:: Sequence of actions Emacs performs at startup.
1404* Init File:: Details on reading the init file.
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1405* Terminal-Specific:: How the terminal-specific Lisp file is read.
1406* Command-Line Arguments:: How command-line arguments are processed,
1407 and how you can customize them.
1408
1409Getting Out of Emacs
1410
1411* Killing Emacs:: Exiting Emacs irreversibly.
1412* Suspending Emacs:: Exiting Emacs reversibly.
1413
1414Terminal Input
1415
1416* Input Modes:: Options for how input is processed.
1417* Recording Input:: Saving histories of recent or all input events.
1418
1419Tips and Conventions
1420
1421* Coding Conventions:: Conventions for clean and robust programs.
1422* Key Binding Conventions:: Which keys should be bound by which programs.
1423* Programming Tips:: Making Emacs code fit smoothly in Emacs.
1424* Compilation Tips:: Making compiled code run fast.
1425* Warning Tips:: Turning off compiler warnings.
1426* Documentation Tips:: Writing readable documentation strings.
1427* Comment Tips:: Conventions for writing comments.
1428* Library Headers:: Standard headers for library packages.
1429
1430GNU Emacs Internals
1431
1432* Building Emacs:: How the dumped Emacs is made.
1433* Pure Storage:: A kludge to make preloaded Lisp functions sharable.
1434* Garbage Collection:: Reclaiming space for Lisp objects no longer used.
1435* Memory Usage:: Info about total size of Lisp objects made so far.
1436* Writing Emacs Primitives:: Writing C code for Emacs.
1437* Object Internals:: Data formats of buffers, windows, processes.
1438
1439Object Internals
1440
1441* Buffer Internals:: Components of a buffer structure.
1442* Window Internals:: Components of a window structure.
1443* Process Internals:: Components of a process structure.
1444@end detailmenu
1445@end menu
1446
1447@include intro.texi
1448@include objects.texi
1449@include numbers.texi
1450@include strings.texi
1451
1452@include lists.texi
1453@include sequences.texi
1454@include hash.texi
1455@include symbols.texi
1456@include eval.texi
1457
1458@include control.texi
1459@include variables.texi
1460@include functions.texi
1461@include macros.texi
1462
1463@include customize.texi
1464@include loading.texi
1465@include compile.texi
1466@include advice.texi
1467
561c0216 1468@c This includes edebug.texi.
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1469@include debugging.texi
1470@include streams.texi
1471@include minibuf.texi
1472@include commands.texi
1473
1474@include keymaps.texi
1475@include modes.texi
1476@include help.texi
1477@include files.texi
1478
1479@include backups.texi
1480@include buffers.texi
1481@include windows.texi
1482@include frames.texi
1483
1484@include positions.texi
1485@include markers.texi
1486@include text.texi
1487@include nonascii.texi
1488
1489@include searching.texi
1490@include syntax.texi
1491@include abbrevs.texi
1492@include processes.texi
1493
1494@include display.texi
1495@include os.texi
1496
1497@c MOVE to Emacs Manual: include misc-modes.texi
1498
1499@c appendices
1500
1501@c REMOVE this: include non-hacker.texi
1502
1503@include anti.texi
1504@include doclicense.texi
1505@include gpl.texi
1506@include tips.texi
1507@include internals.texi
1508@include errors.texi
1509@include locals.texi
1510@include maps.texi
1511@include hooks.texi
1512
1513@include index.texi
1514
1515@ignore
1516@node New Symbols, , Index, Top
1517@unnumbered New Symbols Since the Previous Edition
1518
1519@printindex tp
1520@end ignore
1521
1522@bye
1523
1524\f
1525These words prevent "local variables" above from confusing Emacs.
1526
1527@ignore
1528 arch-tag: f7e9a219-a0e1-4776-b631-08eaa1d49b34
1529@end ignore