Lisp manual improvements for plists and symbol plists.
[bpt/emacs.git] / doc / lispref / elisp.texi
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1\input texinfo @c -*-texinfo-*-
2@c %**start of header
3@setfilename elisp
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4
5@ifset VOL1
6@set volflag
7@set voltitle Volume 1
8@end ifset
9
10@ifset VOL2
11@set volflag
12@set voltitle Volume 2
13@end ifset
14
15@ifset volflag
16@settitle GNU Emacs Lisp Reference Manual: @value{voltitle}
17@end ifset
18@ifclear volflag
b8d4c8d0 19@settitle GNU Emacs Lisp Reference Manual
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20@end ifclear
21
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22@c %**end of header
23
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24@c See two-volume-cross-refs.txt.
25@tex
26@ifset VOL1
27\message{Formatting for two volume edition...Volume 1...}
28%
29% Read special toc file, set up in two-volume.make.
30\gdef\tocreadfilename{elisp1-toc-ready.toc}
31%
32% Don't make outlines, they're not needed and \readdatafile can't pay
33% attention to the special definition above.
34\global\let\pdfmakeoutlines=\relax
35%
36% Start volume 1 chapter numbering at 1; this must be listed as chapno0.
37\global\chapno=0
38@end ifset
39@ifset VOL2
40\message{Formatting for two volume edition...Volume 2...}
41%
42% Read special toc file, set up in two-volume.make.
43\gdef\tocreadfilename{elisp2-toc-ready.toc}
44%
45% Don't make outlines, they're not needed and \readdatafile can't pay
46% attention to the special definition above.
47\global\let\pdfmakeoutlines=\relax
48%
49% Start volume 2 chapter numbering at 27; this must be listed as chapno26
50\global\chapno=26
51@end ifset
52@end tex
53
54
b8d4c8d0 55@c Version of the manual and of Emacs.
bbba8869 56@c (See comments for EDITION in emacs.texi)
0dc91072 57@set VERSION 3.1
f7a31f11 58@include emacsver.texi
eceeb5fc 59@set DATE May 2012
b8d4c8d0 60
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61@c in general, keep the following line commented out, unless doing a
62@c copy of this manual that will be published. The manual should go
63@c onto the distribution in the full, 8.5 x 11" size.
84f4a531 64@c @set smallbook
b8d4c8d0 65
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66@ifset volflag
67@smallbook
68@end ifset
69
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70@ifset smallbook
71@smallbook
72@end ifset
73
74@c per rms and peterb, use 10pt fonts for the main text, mostly to
0e406a72 75@c save on paper cost.
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76@c Do this inside @tex for now, so current makeinfo does not complain.
77@tex
78@ifset smallbook
79@fonttextsize 10
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80@end ifset
81\global\hbadness=6666 % don't worry about not-too-underfull boxes
82@end tex
83
84@c Combine indices.
85@synindex cp fn
86@syncodeindex vr fn
87@syncodeindex ky fn
88@syncodeindex pg fn
89@c We use the "type index" to index new functions and variables.
90@c @syncodeindex tp fn
91
92@copying
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93@iftex
94This is edition @value{VERSION} of the @cite{GNU Emacs Lisp Reference Manual},@*
95@end iftex
96@ifnottex
97This is the @cite{GNU Emacs Lisp Reference Manual}
98@end ifnottex
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99corresponding to Emacs version @value{EMACSVER}.
100
29157371 101Copyright @copyright{} 1990-1996, 1998-2012 Free Software Foundation, Inc.
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102
103@quotation
104Permission is granted to copy, distribute and/or modify this document
204d4665 105under the terms of the GNU Free Documentation License, Version 1.3 or
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106any later version published by the Free Software Foundation; with the
107Invariant Sections being ``GNU General Public License,'' with the
108Front-Cover texts being ``A GNU Manual,'' and with the Back-Cover
109Texts as in (a) below. A copy of the license is included in the
110section entitled ``GNU Free Documentation License.''
111
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112(a) The FSF's Back-Cover Text is: ``You have the freedom to copy and
113modify this GNU manual. Buying copies from the FSF supports it in
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114developing GNU and promoting software freedom.''
115@end quotation
116@end copying
117
63a329f8 118@documentencoding ISO-8859-1
80b005c7 119
e979a521 120@dircategory GNU Emacs Lisp
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121@direntry
122* Elisp: (elisp). The Emacs Lisp Reference Manual.
123@end direntry
124
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125@titlepage
126@title GNU Emacs Lisp Reference Manual
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127@ifset volflag
128@subtitle @value{voltitle}
129@end ifset
b8d4c8d0 130@subtitle For Emacs Version @value{EMACSVER}
f751a2ae 131@subtitle Revision @value{VERSION}, @value{DATE}
b8d4c8d0 132
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133@author by Bil Lewis, Dan LaLiberte, Richard Stallman,
134@author the GNU Manual Group, et al.
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135@page
136@vskip 0pt plus 1filll
137@insertcopying
138
139@sp 2
140Published by the Free Software Foundation @*
14151 Franklin St, Fifth Floor @*
142Boston, MA 02110-1301 @*
143USA @*
144ISBN 1-882114-74-4
145
146@sp 2
147Cover art by Etienne Suvasa.
148@end titlepage
149
150
151@c Print the tables of contents
152@summarycontents
153@contents
154
155
156@ifnottex
ecc6530d 157@node Top
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158@top Emacs Lisp
159
5300838c 160@insertcopying
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161@end ifnottex
162
163@menu
164* Introduction:: Introduction and conventions used.
165
166* Lisp Data Types:: Data types of objects in Emacs Lisp.
167* Numbers:: Numbers and arithmetic functions.
168* Strings and Characters:: Strings, and functions that work on them.
169* Lists:: Lists, cons cells, and related functions.
170* Sequences Arrays Vectors:: Lists, strings and vectors are called sequences.
171 Certain functions act on any kind of sequence.
172 The description of vectors is here as well.
173* Hash Tables:: Very fast lookup-tables.
174* Symbols:: Symbols represent names, uniquely.
175
176* Evaluation:: How Lisp expressions are evaluated.
177* Control Structures:: Conditionals, loops, nonlocal exits.
178* Variables:: Using symbols in programs to stand for values.
179* Functions:: A function is a Lisp program
180 that can be invoked from other functions.
181* Macros:: Macros are a way to extend the Lisp language.
81927dd2 182* Customization:: Making variables and faces customizable.
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183
184* Loading:: Reading files of Lisp code into Lisp.
185* Byte Compilation:: Compilation makes programs run faster.
186* Advising Functions:: Adding to the definition of a function.
187* Debugging:: Tools and tips for debugging Lisp programs.
188
189* Read and Print:: Converting Lisp objects to text and back.
190* Minibuffers:: Using the minibuffer to read input.
191* Command Loop:: How the editor command loop works,
192 and how you can call its subroutines.
193* Keymaps:: Defining the bindings from keys to commands.
194* Modes:: Defining major and minor modes.
195* Documentation:: Writing and using documentation strings.
196
197* Files:: Accessing files.
198* Backups and Auto-Saving:: Controlling how backups and auto-save
199 files are made.
200* Buffers:: Creating and using buffer objects.
201* Windows:: Manipulating windows and displaying buffers.
d24880de 202* Frames:: Making multiple system-level windows.
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203* Positions:: Buffer positions and motion functions.
204* Markers:: Markers represent positions and update
205 automatically when the text is changed.
206
207* Text:: Examining and changing text in buffers.
208* Non-ASCII Characters:: Non-ASCII text in buffers and strings.
209* Searching and Matching:: Searching buffers for strings or regexps.
210* Syntax Tables:: The syntax table controls word and list parsing.
211* Abbrevs:: How Abbrev mode works, and its data structures.
212
213* Processes:: Running and communicating with subprocesses.
d24880de 214* Display:: Features for controlling the screen display.
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215* System Interface:: Getting the user id, system type, environment
216 variables, and other such things.
217
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218* Packaging:: Preparing Lisp code for distribution.
219
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220Appendices
221
48cac051 222* Antinews:: Info for users downgrading to Emacs 23.
561c0216 223* GNU Free Documentation License:: The license for this documentation.
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224* GPL:: Conditions for copying and changing GNU Emacs.
225* Tips:: Advice and coding conventions for Emacs Lisp.
226* GNU Emacs Internals:: Building and dumping Emacs;
227 internal data structures.
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228* Standard Errors:: List of some standard error symbols.
229* Standard Keymaps:: List of some standard keymaps.
230* Standard Hooks:: List of some standard hook variables.
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231
232* Index:: Index including concepts, functions, variables,
233 and other terms.
234
235@ignore
236* New Symbols:: New functions and variables in Emacs @value{EMACSVER}.
237@end ignore
238
239@c Do NOT modify the following 3 lines! They must have this form to
240@c be correctly identified by `texinfo-multiple-files-update'. In
241@c particular, the detailed menu header line MUST be identical to the
242@c value of `texinfo-master-menu-header'. See texnfo-upd.el.
243
244@detailmenu
245 --- The Detailed Node Listing ---
246 ---------------------------------
247
91223e54 248Here are other nodes that are subnodes of those already listed,
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249mentioned here so you can get to them in one step:
250
251Introduction
252
253* Caveats:: Flaws and a request for help.
254* Lisp History:: Emacs Lisp is descended from Maclisp.
255* Conventions:: How the manual is formatted.
256* Version Info:: Which Emacs version is running?
09ae5da1 257* Acknowledgments:: The authors, editors, and sponsors of this manual.
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258
259Conventions
260
261* Some Terms:: Explanation of terms we use in this manual.
262* nil and t:: How the symbols @code{nil} and @code{t} are used.
263* Evaluation Notation:: The format we use for examples of evaluation.
561c0216 264* Printing Notation:: The format we use when examples print text.
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265* Error Messages:: The format we use for examples of errors.
266* Buffer Text Notation:: The format we use for buffer contents in examples.
267* Format of Descriptions:: Notation for describing functions, variables, etc.
268
269Format of Descriptions
270
271* A Sample Function Description:: A description of an imaginary
272 function, @code{foo}.
273* A Sample Variable Description:: A description of an imaginary
274 variable, @code{electric-future-map}.
275
276Lisp Data Types
277
278* Printed Representation:: How Lisp objects are represented as text.
279* Comments:: Comments and their formatting conventions.
280* Programming Types:: Types found in all Lisp systems.
281* Editing Types:: Types specific to Emacs.
121e43fd 282* Circular Objects:: Read syntax for circular structure.
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283* Type Predicates:: Tests related to types.
284* Equality Predicates:: Tests of equality between any two objects.
285
286Programming Types
287
288* Integer Type:: Numbers without fractional parts.
289* Floating Point Type:: Numbers with fractional parts and with a large range.
290* Character Type:: The representation of letters, numbers and
291 control characters.
292* Symbol Type:: A multi-use object that refers to a function,
561c0216 293 variable, or property list, and has a unique identity.
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294* Sequence Type:: Both lists and arrays are classified as sequences.
295* Cons Cell Type:: Cons cells, and lists (which are made from cons cells).
296* Array Type:: Arrays include strings and vectors.
297* String Type:: An (efficient) array of characters.
298* Vector Type:: One-dimensional arrays.
299* Char-Table Type:: One-dimensional sparse arrays indexed by characters.
300* Bool-Vector Type:: One-dimensional arrays of @code{t} or @code{nil}.
301* Hash Table Type:: Super-fast lookup tables.
302* Function Type:: A piece of executable code you can call from elsewhere.
303* Macro Type:: A method of expanding an expression into another
304 expression, more fundamental but less pretty.
305* Primitive Function Type:: A function written in C, callable from Lisp.
306* Byte-Code Type:: A function written in Lisp, then compiled.
307* Autoload Type:: A type used for automatically loading seldom-used
308 functions.
309
310Character Type
311
312* Basic Char Syntax:: Syntax for regular characters.
313* General Escape Syntax:: How to specify characters by their codes.
314* Ctl-Char Syntax:: Syntax for control characters.
315* Meta-Char Syntax:: Syntax for meta-characters.
316* Other Char Bits:: Syntax for hyper-, super-, and alt-characters.
317
318Cons Cell and List Types
319
320* Box Diagrams:: Drawing pictures of lists.
561c0216 321* Dotted Pair Notation:: A general syntax for cons cells.
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322* Association List Type:: A specially constructed list.
323
324String Type
325
326* Syntax for Strings:: How to specify Lisp strings.
327* Non-ASCII in Strings:: International characters in strings.
328* Nonprinting Characters:: Literal unprintable characters in strings.
329* Text Props and Strings:: Strings with text properties.
330
331Editing Types
332
333* Buffer Type:: The basic object of editing.
334* Marker Type:: A position in a buffer.
561c0216 335* Window Type:: Buffers are displayed in windows.
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336* Frame Type:: Windows subdivide frames.
337* Terminal Type:: A terminal device displays frames.
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338* Window Configuration Type:: Recording the way a frame is subdivided.
339* Frame Configuration Type:: Recording the status of all frames.
a65f6a85 340* Process Type:: A subprocess of Emacs running on the underlying OS.
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341* Stream Type:: Receive or send characters.
342* Keymap Type:: What function a keystroke invokes.
343* Overlay Type:: How an overlay is represented.
3a6aa965 344* Font Type:: Fonts for displaying text.
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345
346Numbers
347
348* Integer Basics:: Representation and range of integers.
d24880de 349* Float Basics:: Representation and range of floating point.
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350* Predicates on Numbers:: Testing for numbers.
351* Comparison of Numbers:: Equality and inequality predicates.
d24880de 352* Numeric Conversions:: Converting float to integer and vice versa.
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353* Arithmetic Operations:: How to add, subtract, multiply and divide.
354* Rounding Operations:: Explicitly rounding floating point numbers.
355* Bitwise Operations:: Logical and, or, not, shifting.
356* Math Functions:: Trig, exponential and logarithmic functions.
357* Random Numbers:: Obtaining random integers, predictable or not.
358
359Strings and Characters
360
361* String Basics:: Basic properties of strings and characters.
362* Predicates for Strings:: Testing whether an object is a string or char.
363* Creating Strings:: Functions to allocate new strings.
121e43fd 364* Modifying Strings:: Altering the contents of an existing string.
b8d4c8d0 365* Text Comparison:: Comparing characters or strings.
561c0216 366* String Conversion:: Converting to and from characters and strings.
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367* Formatting Strings:: @code{format}: Emacs's analogue of @code{printf}.
368* Case Conversion:: Case conversion functions.
d24880de 369* Case Tables:: Customizing case conversion.
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370
371Lists
372
373* Cons Cells:: How lists are made out of cons cells.
374* List-related Predicates:: Is this object a list? Comparing two lists.
375* List Elements:: Extracting the pieces of a list.
376* Building Lists:: Creating list structure.
377* List Variables:: Modifying lists stored in variables.
378* Modifying Lists:: Storing new pieces into an existing list.
379* Sets And Lists:: A list can represent a finite mathematical set.
380* Association Lists:: A list can represent a finite relation or mapping.
f02f19bd 381* Property Lists:: A list of paired elements.
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382
383Modifying Existing List Structure
384
385* Setcar:: Replacing an element in a list.
386* Setcdr:: Replacing part of the list backbone.
387 This can be used to remove or add elements.
388* Rearrangement:: Reordering the elements in a list; combining lists.
389
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390Property Lists
391
392* Plists and Alists:: Comparison of the advantages of property
393 lists and association lists.
394* Plist Access:: Accessing property lists stored elsewhere.
395
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396Sequences, Arrays, and Vectors
397
398* Sequence Functions:: Functions that accept any kind of sequence.
399* Arrays:: Characteristics of arrays in Emacs Lisp.
400* Array Functions:: Functions specifically for arrays.
401* Vectors:: Special characteristics of Emacs Lisp vectors.
402* Vector Functions:: Functions specifically for vectors.
403* Char-Tables:: How to work with char-tables.
404* Bool-Vectors:: How to work with bool-vectors.
31cbea1d 405* Rings:: Managing a fixed-size ring of objects.
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406
407Hash Tables
408
409* Creating Hash:: Functions to create hash tables.
410* Hash Access:: Reading and writing the hash table contents.
561c0216 411* Defining Hash:: Defining new comparison methods.
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412* Other Hash:: Miscellaneous.
413
414Symbols
415
416* Symbol Components:: Symbols have names, values, function definitions
417 and property lists.
418* Definitions:: A definition says how a symbol will be used.
419* Creating Symbols:: How symbols are kept unique.
f02f19bd 420* Symbol Properties:: Each symbol has a property list
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421 for recording miscellaneous information.
422
f02f19bd 423Symbol Properties
b8d4c8d0 424
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425* Symbol Plists:: Accessing symbol properties.
426* Standard Properties:: Standard meanings of symbol properties.
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427
428Evaluation
429
430* Intro Eval:: Evaluation in the scheme of things.
431* Forms:: How various sorts of objects are evaluated.
432* Quoting:: Avoiding evaluation (to put constants in
433 the program).
03988c98 434* Backquote:: Easier construction of list structure.
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435* Eval:: How to invoke the Lisp interpreter explicitly.
436
437Kinds of Forms
438
439* Self-Evaluating Forms:: Forms that evaluate to themselves.
440* Symbol Forms:: Symbols evaluate as variables.
441* Classifying Lists:: How to distinguish various sorts of list forms.
442* Function Indirection:: When a symbol appears as the car of a list,
d24880de 443 we find the real function via the symbol.
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444* Function Forms:: Forms that call functions.
445* Macro Forms:: Forms that call macros.
446* Special Forms:: "Special forms" are idiosyncratic primitives,
447 most of them extremely important.
448* Autoloading:: Functions set up to load files
449 containing their real definitions.
450
451Control Structures
452
453* Sequencing:: Evaluation in textual order.
454* Conditionals:: @code{if}, @code{cond}, @code{when}, @code{unless}.
455* Combining Conditions:: @code{and}, @code{or}, @code{not}.
456* Iteration:: @code{while} loops.
457* Nonlocal Exits:: Jumping out of a sequence.
458
459Nonlocal Exits
460
461* Catch and Throw:: Nonlocal exits for the program's own purposes.
462* Examples of Catch:: Showing how such nonlocal exits can be written.
463* Errors:: How errors are signaled and handled.
464* Cleanups:: Arranging to run a cleanup form if an
465 error happens.
466
467Errors
468
469* Signaling Errors:: How to report an error.
470* Processing of Errors:: What Emacs does when you report an error.
471* Handling Errors:: How you can trap errors and continue execution.
472* Error Symbols:: How errors are classified for trapping them.
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473
474Variables
475
476* Global Variables:: Variable values that exist permanently, everywhere.
477* Constant Variables:: Certain "variables" have values that never change.
478* Local Variables:: Variable values that exist only temporarily.
479* Void Variables:: Symbols that lack values.
480* Defining Variables:: A definition says a symbol is used as a variable.
481* Tips for Defining:: Things you should think about when you
482 define a variable.
483* Accessing Variables:: Examining values of variables whose names
484 are known only at run time.
485* Setting Variables:: Storing new values in variables.
486* Variable Scoping:: How Lisp chooses among local and global values.
487* Buffer-Local Variables:: Variable values in effect only in one buffer.
b8d4c8d0 488* File Local Variables:: Handling local variable lists in files.
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489* Directory Local Variables:: Local variables common to all files in a
490 directory.
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491* Variable Aliases:: Variables that are aliases for other variables.
492* Variables with Restricted Values:: Non-constant variables whose value can
493 @emph{not} be an arbitrary Lisp object.
5887564d 494* Generalized Variables:: Extending the concept of variables.
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495
496Scoping Rules for Variable Bindings
497
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498* Dynamic Binding:: The default for binding local variables in Emacs.
499* Dynamic Binding Tips:: Avoiding problems with dynamic binding.
500* Lexical Binding:: A different type of local variable binding.
501* Using Lexical Binding:: How to enable lexical binding.
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502
503Buffer-Local Variables
504
505* Intro to Buffer-Local:: Introduction and concepts.
506* Creating Buffer-Local:: Creating and destroying buffer-local bindings.
507* Default Value:: The default value is seen in buffers
508 that don't have their own buffer-local values.
509
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510Generalized Variables
511
512* Setting Generalized Variables:: The @code{setf} macro.
513* Adding Generalized Variables:: Defining new @code{setf} forms.
514
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515Functions
516
561c0216 517* What Is a Function:: Lisp functions vs. primitives; terminology.
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518* Lambda Expressions:: How functions are expressed as Lisp objects.
519* Function Names:: A symbol can serve as the name of a function.
520* Defining Functions:: Lisp expressions for defining functions.
521* Calling Functions:: How to use an existing function.
522* Mapping Functions:: Applying a function to each element of a list, etc.
561c0216 523* Anonymous Functions:: Lambda expressions are functions with no names.
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524* Function Cells:: Accessing or setting the function definition
525 of a symbol.
735cc5ca 526* Closures:: Functions that enclose a lexical environment.
b8d4c8d0 527* Obsolete Functions:: Declaring functions obsolete.
d24880de 528* Inline Functions:: Defining functions that the compiler
cf988578 529 will expand inline.
48de8b12 530* Declare Form:: Adding additional information about a function.
d24880de 531* Declaring Functions:: Telling the compiler that a function is defined.
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532* Function Safety:: Determining whether a function is safe to call.
533* Related Topics:: Cross-references to specific Lisp primitives
534 that have a special bearing on how
535 functions work.
536
537Lambda Expressions
538
539* Lambda Components:: The parts of a lambda expression.
540* Simple Lambda:: A simple example.
541* Argument List:: Details and special features of argument lists.
542* Function Documentation:: How to put documentation in a function.
543
544Macros
545
546* Simple Macro:: A basic example.
547* Expansion:: How, when and why macros are expanded.
548* Compiling Macros:: How macros are expanded by the compiler.
549* Defining Macros:: How to write a macro definition.
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550* Problems with Macros:: Don't evaluate the macro arguments too many times.
551 Don't hide the user's variables.
552* Indenting Macros:: Specifying how to indent macro calls.
553
554Common Problems Using Macros
555
556* Wrong Time:: Do the work in the expansion, not in the macro.
557* Argument Evaluation:: The expansion should evaluate each macro arg once.
558* Surprising Local Vars:: Local variable bindings in the expansion
559 require special care.
560* Eval During Expansion:: Don't evaluate them; put them in the expansion.
561* Repeated Expansion:: Avoid depending on how many times expansion is done.
562
cf988578 563Customization Settings
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564
565* Common Keywords:: Common keyword arguments for all kinds of
566 customization declarations.
567* Group Definitions:: Writing customization group definitions.
568* Variable Definitions:: Declaring user options.
569* Customization Types:: Specifying the type of a user option.
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570* Applying Customizations:: Functions to apply customization settings.
571* Custom Themes:: Writing Custom themes.
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572
573Customization Types
574
3deead93 575* Simple Types:: Simple customization types: sexp, integer, etc.
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576* Composite Types:: Build new types from other types or data.
577* Splicing into Lists:: Splice elements into list with @code{:inline}.
578* Type Keywords:: Keyword-argument pairs in a customization type.
579* Defining New Types:: Give your type a name.
580
581Loading
582
583* How Programs Do Loading:: The @code{load} function and others.
584* Load Suffixes:: Details about the suffixes that @code{load} tries.
585* Library Search:: Finding a library to load.
586* Loading Non-ASCII:: Non-@acronym{ASCII} characters in Emacs Lisp files.
587* Autoload:: Setting up a function to autoload.
588* Repeated Loading:: Precautions about loading a file twice.
589* Named Features:: Loading a library if it isn't already loaded.
590* Where Defined:: Finding which file defined a certain symbol.
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591* Unloading:: How to "unload" a library that was loaded.
592* Hooks for Loading:: Providing code to be run when
593 particular libraries are loaded.
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594
595Byte Compilation
596
597* Speed of Byte-Code:: An example of speedup from byte compilation.
598* Compilation Functions:: Byte compilation functions.
599* Docs and Compilation:: Dynamic loading of documentation strings.
600* Dynamic Loading:: Dynamic loading of individual functions.
601* Eval During Compile:: Code to be evaluated when you compile.
602* Compiler Errors:: Handling compiler error messages.
d24880de 603* Byte-Code Objects:: The data type used for byte-compiled functions.
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604* Disassembly:: Disassembling byte-code; how to read byte-code.
605
606Advising Emacs Lisp Functions
607
608* Simple Advice:: A simple example to explain the basics of advice.
609* Defining Advice:: Detailed description of @code{defadvice}.
610* Around-Advice:: Wrapping advice around a function's definition.
611* Computed Advice:: ...is to @code{defadvice} as @code{fset} is to @code{defun}.
612* Activation of Advice:: Advice doesn't do anything until you activate it.
613* Enabling Advice:: You can enable or disable each piece of advice.
614* Preactivation:: Preactivation is a way of speeding up the
615 loading of compiled advice.
616* Argument Access in Advice:: How advice can access the function's arguments.
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617* Combined Definition:: How advice is implemented.
618
619Debugging Lisp Programs
620
355cabc6 621* Debugger:: A debugger for the Emacs Lisp evaluator.
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622* Edebug:: A source-level Emacs Lisp debugger.
623* Syntax Errors:: How to find syntax errors.
624* Test Coverage:: Ensuring you have tested all branches in your code.
5b776637 625* Profiling:: Measuring the resources that your code uses.
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626
627The Lisp Debugger
628
629* Error Debugging:: Entering the debugger when an error happens.
d24880de 630* Infinite Loops:: Stopping and debugging a program that doesn't exit.
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631* Function Debugging:: Entering it when a certain function is called.
632* Explicit Debug:: Entering it at a certain point in the program.
633* Using Debugger:: What the debugger does; what you see while in it.
634* Debugger Commands:: Commands used while in the debugger.
635* Invoking the Debugger:: How to call the function @code{debug}.
636* Internals of Debugger:: Subroutines of the debugger, and global variables.
637
638Edebug
639
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640* Using Edebug:: Introduction to use of Edebug.
641* Instrumenting:: You must instrument your code
642 in order to debug it with Edebug.
b8d4c8d0 643* Edebug Execution Modes:: Execution modes, stopping more or less often.
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644* Jumping:: Commands to jump to a specified place.
645* Edebug Misc:: Miscellaneous commands.
646* Breaks:: Setting breakpoints to make the program stop.
647* Trapping Errors:: Trapping errors with Edebug.
648* Edebug Views:: Views inside and outside of Edebug.
649* Edebug Eval:: Evaluating expressions within Edebug.
650* Eval List:: Expressions whose values are displayed
651 each time you enter Edebug.
652* Printing in Edebug:: Customization of printing.
653* Trace Buffer:: How to produce trace output in a buffer.
654* Coverage Testing:: How to test evaluation coverage.
655* The Outside Context:: Data that Edebug saves and restores.
b8d4c8d0 656* Edebug and Macros:: Specifying how to handle macro calls.
d24880de 657* Edebug Options:: Option variables for customizing Edebug.
b8d4c8d0 658
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659Breaks
660
661* Breakpoints:: Breakpoints at stop points.
662* Global Break Condition:: Breaking on an event.
663* Source Breakpoints:: Embedding breakpoints in source code.
664
665The Outside Context
666
667* Checking Whether to Stop::When Edebug decides what to do.
668* Edebug Display Update:: When Edebug updates the display.
669* Edebug Recursive Edit:: When Edebug stops execution.
670
671Edebug and Macros
672
673* Instrumenting Macro Calls::The basic problem.
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674* Specification List:: How to specify complex patterns of evaluation.
675* Backtracking:: What Edebug does when matching fails.
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676* Specification Examples:: To help understand specifications.
677
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678Debugging Invalid Lisp Syntax
679
680* Excess Open:: How to find a spurious open paren or missing close.
681* Excess Close:: How to find a spurious close paren or missing open.
682
683Reading and Printing Lisp Objects
684
685* Streams Intro:: Overview of streams, reading and printing.
686* Input Streams:: Various data types that can be used as
687 input streams.
688* Input Functions:: Functions to read Lisp objects from text.
689* Output Streams:: Various data types that can be used as
690 output streams.
691* Output Functions:: Functions to print Lisp objects as text.
692* Output Variables:: Variables that control what the printing
693 functions do.
694
695Minibuffers
696
697* Intro to Minibuffers:: Basic information about minibuffers.
698* Text from Minibuffer:: How to read a straight text string.
699* Object from Minibuffer:: How to read a Lisp object or expression.
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700* Minibuffer History:: Recording previous minibuffer inputs
701 so the user can reuse them.
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702* Initial Input:: Specifying initial contents for the minibuffer.
703* Completion:: How to invoke and customize completion.
704* Yes-or-No Queries:: Asking a question with a simple answer.
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705* Multiple Queries:: Asking a series of similar questions.
706* Reading a Password:: Reading a password from the terminal.
b8d4c8d0 707* Minibuffer Commands:: Commands used as key bindings in minibuffers.
b8d4c8d0 708* Minibuffer Windows:: Operating on the special minibuffer windows.
c0ea08d2 709* Minibuffer Contents:: How such commands access the minibuffer text.
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710* Recursive Mini:: Whether recursive entry to minibuffer is allowed.
711* Minibuffer Misc:: Various customization hooks and variables.
712
713Completion
714
715* Basic Completion:: Low-level functions for completing strings.
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716* Minibuffer Completion:: Invoking the minibuffer with completion.
717* Completion Commands:: Minibuffer commands that do completion.
718* High-Level Completion:: Convenient special cases of completion
b58b1df8 719 (reading buffer names, variable names, etc.).
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720* Reading File Names:: Using completion to read file names and
721 shell commands.
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722* Completion Variables:: Variables controlling completion behavior.
723* Programmed Completion:: Writing your own completion function.
60236b0d 724* Completion in Buffers:: Completing text in ordinary buffers.
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725
726Command Loop
727
728* Command Overview:: How the command loop reads commands.
729* Defining Commands:: Specifying how a function should read arguments.
730* Interactive Call:: Calling a command, so that it will read arguments.
61bbdbc6 731* Distinguish Interactive:: Making a command distinguish interactive calls.
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732* Command Loop Info:: Variables set by the command loop for you to examine.
733* Adjusting Point:: Adjustment of point after a command.
d24880de 734* Input Events:: What input looks like when you read it.
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735* Reading Input:: How to read input events from the keyboard or mouse.
736* Special Events:: Events processed immediately and individually.
737* Waiting:: Waiting for user input or elapsed time.
738* Quitting:: How @kbd{C-g} works. How to catch or defer quitting.
739* Prefix Command Arguments:: How the commands to set prefix args work.
740* Recursive Editing:: Entering a recursive edit,
741 and why you usually shouldn't.
742* Disabling Commands:: How the command loop handles disabled commands.
743* Command History:: How the command history is set up, and how accessed.
744* Keyboard Macros:: How keyboard macros are implemented.
745
746Defining Commands
747
748* Using Interactive:: General rules for @code{interactive}.
749* Interactive Codes:: The standard letter-codes for reading arguments
750 in various ways.
751* Interactive Examples:: Examples of how to read interactive arguments.
752
753Input Events
754
755* Keyboard Events:: Ordinary characters--keys with symbols on them.
756* Function Keys:: Function keys--keys with names, not symbols.
757* Mouse Events:: Overview of mouse events.
758* Click Events:: Pushing and releasing a mouse button.
759* Drag Events:: Moving the mouse before releasing the button.
760* Button-Down Events:: A button was pushed and not yet released.
761* Repeat Events:: Double and triple click (or drag, or down).
762* Motion Events:: Just moving the mouse, not pushing a button.
763* Focus Events:: Moving the mouse between frames.
764* Misc Events:: Other events the system can generate.
765* Event Examples:: Examples of the lists for mouse events.
766* Classifying Events:: Finding the modifier keys in an event symbol.
561c0216 767 Event types.
d24880de 768* Accessing Mouse:: Functions to extract info from mouse events.
f1c15283 769* Accessing Scroll:: Functions to get info from scroll bar events.
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770* Strings of Events:: Special considerations for putting
771 keyboard character events in a string.
772
773Reading Input
774
775* Key Sequence Input:: How to read one key sequence.
776* Reading One Event:: How to read just one event.
777* Event Mod:: How Emacs modifies events as they are read.
778* Invoking the Input Method:: How reading an event uses the input method.
779* Quoted Character Input:: Asking the user to specify a character.
780* Event Input Misc:: How to reread or throw away input events.
781
782Keymaps
783
784* Key Sequences:: Key sequences as Lisp objects.
785* Keymap Basics:: Basic concepts of keymaps.
786* Format of Keymaps:: What a keymap looks like as a Lisp object.
787* Creating Keymaps:: Functions to create and copy keymaps.
788* Inheritance and Keymaps:: How one keymap can inherit the bindings
789 of another keymap.
790* Prefix Keys:: Defining a key with a keymap as its definition.
791* Active Keymaps:: How Emacs searches the active keymaps
792 for a key binding.
793* Searching Keymaps:: A pseudo-Lisp summary of searching active maps.
794* Controlling Active Maps:: Each buffer has a local keymap
795 to override the standard (global) bindings.
796 A minor mode can also override them.
561c0216 797* Key Lookup:: Finding a key's binding in one keymap.
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798* Functions for Key Lookup:: How to request key lookup.
799* Changing Key Bindings:: Redefining a key in a keymap.
800* Remapping Commands:: A keymap can translate one command to another.
801* Translation Keymaps:: Keymaps for translating sequences of events.
802* Key Binding Commands:: Interactive interfaces for redefining keys.
803* Scanning Keymaps:: Looking through all keymaps, for printing help.
561c0216 804* Menu Keymaps:: Defining a menu as a keymap.
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805
806Menu Keymaps
807
808* Defining Menus:: How to make a keymap that defines a menu.
809* Mouse Menus:: How users actuate the menu with the mouse.
810* Keyboard Menus:: How users actuate the menu with the keyboard.
811* Menu Example:: Making a simple menu.
812* Menu Bar:: How to customize the menu bar.
813* Tool Bar:: A tool bar is a row of images.
814* Modifying Menus:: How to add new items to a menu.
75e8f9d2 815* Easy Menu:: A convenience macro for defining menus.
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816
817Defining Menus
818
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819* Simple Menu Items:: A simple kind of menu key binding.
820* Extended Menu Items:: More complex menu item definitions.
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821* Menu Separators:: Drawing a horizontal line through a menu.
822* Alias Menu Items:: Using command aliases in menu items.
823
824Major and Minor Modes
825
826* Hooks:: How to use hooks; how to write code that provides hooks.
827* Major Modes:: Defining major modes.
828* Minor Modes:: Defining minor modes.
829* Mode Line Format:: Customizing the text that appears in the mode line.
3fd50d5c 830* Imenu:: Providing a menu of definitions made in a buffer.
b8d4c8d0 831* Font Lock Mode:: How modes can highlight text according to syntax.
4230351b 832* Auto-Indentation:: How to teach Emacs to indent for a major mode.
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833* Desktop Save Mode:: How modes can have buffer state saved between
834 Emacs sessions.
835
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836Hooks
837
838* Running Hooks:: How to run a hook.
839* Setting Hooks:: How to put functions on a hook, or remove them.
840
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841Major Modes
842
b8d4c8d0 843* Major Mode Conventions:: Coding conventions for keymaps, etc.
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844* Auto Major Mode:: How Emacs chooses the major mode automatically.
845* Mode Help:: Finding out how to use a mode.
846* Derived Modes:: Defining a new major mode based on another major
847 mode.
3fd50d5c 848* Basic Major Modes:: Modes that other modes are often derived from.
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849* Mode Hooks:: Hooks run at the end of major mode functions.
850* Tabulated List Mode:: Parent mode for buffers containing tabulated data.
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851* Generic Modes:: Defining a simple major mode that supports
852 comment syntax and Font Lock mode.
561c0216 853* Example Major Modes:: Text mode and Lisp modes.
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854
855Minor Modes
856
857* Minor Mode Conventions:: Tips for writing a minor mode.
858* Keymaps and Minor Modes:: How a minor mode can have its own keymap.
859* Defining Minor Modes:: A convenient facility for defining minor modes.
860
861Mode Line Format
862
561c0216 863* Mode Line Basics:: Basic ideas of mode line control.
b8d4c8d0 864* Mode Line Data:: The data structure that controls the mode line.
561c0216 865* Mode Line Top:: The top level variable, mode-line-format.
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866* Mode Line Variables:: Variables used in that data structure.
867* %-Constructs:: Putting information into a mode line.
868* Properties in Mode:: Using text properties in the mode line.
869* Header Lines:: Like a mode line, but at the top.
870* Emulating Mode Line:: Formatting text as the mode line would.
871
872Font Lock Mode
873
874* Font Lock Basics:: Overview of customizing Font Lock.
875* Search-based Fontification:: Fontification based on regexps.
876* Customizing Keywords:: Customizing search-based fontification.
877* Other Font Lock Variables:: Additional customization facilities.
878* Levels of Font Lock:: Each mode can define alternative levels
879 so that the user can select more or less.
880* Precalculated Fontification:: How Lisp programs that produce the buffer
881 contents can also specify how to fontify it.
882* Faces for Font Lock:: Special faces specifically for Font Lock.
883* Syntactic Font Lock:: Fontification based on syntax tables.
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884* Multiline Font Lock:: How to coerce Font Lock into properly
885 highlighting multiline constructs.
886
887Multiline Font Lock Constructs
888
561c0216 889* Font Lock Multiline:: Marking multiline chunks with a text property.
bc3bea9c 890* Region to Refontify:: Controlling which region gets refontified
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891 after a buffer change.
892
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893Automatic Indentation of code
894
895* SMIE:: A simple minded indentation engine.
896
897Simple Minded Indentation Engine
898
899* SMIE setup:: SMIE setup and features.
900* Operator Precedence Grammars:: A very simple parsing technique.
901* SMIE Grammar:: Defining the grammar of a language.
902* SMIE Lexer:: Defining tokens.
903* SMIE Tricks:: Working around the parser's limitations.
904* SMIE Indentation:: Specifying indentation rules.
905* SMIE Indentation Helpers:: Helper functions for indentation rules.
906* SMIE Indentation Example:: Sample indentation rules.
907
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908Documentation
909
8376d7c2 910* Documentation Basics:: Where doc strings are defined and stored.
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911* Accessing Documentation:: How Lisp programs can access doc strings.
912* Keys in Documentation:: Substituting current key bindings.
913* Describing Characters:: Making printable descriptions of
914 non-printing characters and key sequences.
915* Help Functions:: Subroutines used by Emacs help facilities.
916
917Files
918
919* Visiting Files:: Reading files into Emacs buffers for editing.
920* Saving Buffers:: Writing changed buffers back into files.
561c0216 921* Reading from Files:: Reading files into buffers without visiting.
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922* Writing to Files:: Writing new files from parts of buffers.
923* File Locks:: Locking and unlocking files, to prevent
924 simultaneous editing by two people.
925* Information about Files:: Testing existence, accessibility, size of files.
a59225b1 926* Changing Files:: Renaming files, changing permissions, etc.
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927* File Names:: Decomposing and expanding file names.
928* Contents of Directories:: Getting a list of the files in a directory.
d24880de 929* Create/Delete Dirs:: Creating and Deleting Directories.
a59225b1 930* Magic File Names:: Special handling for certain file names.
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931* Format Conversion:: Conversion to and from various file formats.
932
933Visiting Files
934
935* Visiting Functions:: The usual interface functions for visiting.
936* Subroutines of Visiting:: Lower-level subroutines that they use.
937
938Information about Files
939
940* Testing Accessibility:: Is a given file readable? Writable?
941* Kinds of Files:: Is it a directory? A symbolic link?
d24880de 942* Truenames:: Eliminating symbolic links from a file name.
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943* File Attributes:: How large is it? Any other names? Etc.
944* Locating Files:: How to find a file in standard places.
945
946File Names
947
948* File Name Components:: The directory part of a file name, and the rest.
561c0216 949* Relative File Names:: Some file names are relative to a current directory.
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950* Directory Names:: A directory's name as a directory
951 is different from its name as a file.
952* File Name Expansion:: Converting relative file names to absolute ones.
953* Unique File Names:: Generating names for temporary files.
954* File Name Completion:: Finding the completions for a given file name.
955* Standard File Names:: If your package uses a fixed file name,
956 how to handle various operating systems simply.
957
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958File Format Conversion
959
121e43fd 960* Format Conversion Overview:: @code{insert-file-contents} and @code{write-region}.
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961* Format Conversion Round-Trip:: Using @code{format-alist}.
962* Format Conversion Piecemeal:: Specifying non-paired conversion.
963
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964Backups and Auto-Saving
965
966* Backup Files:: How backup files are made; how their names
967 are chosen.
968* Auto-Saving:: How auto-save files are made; how their
969 names are chosen.
970* Reverting:: @code{revert-buffer}, and how to customize
971 what it does.
972
973Backup Files
974
975* Making Backups:: How Emacs makes backup files, and when.
976* Rename or Copy:: Two alternatives: renaming the old file
977 or copying it.
978* Numbered Backups:: Keeping multiple backups for each source file.
979* Backup Names:: How backup file names are computed; customization.
980
981Buffers
982
983* Buffer Basics:: What is a buffer?
984* Current Buffer:: Designating a buffer as current
561c0216 985 so that primitives will access its contents.
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986* Buffer Names:: Accessing and changing buffer names.
987* Buffer File Name:: The buffer file name indicates which file
988 is visited.
989* Buffer Modification:: A buffer is @dfn{modified} if it needs to be saved.
990* Modification Time:: Determining whether the visited file was changed
775b55af 991 "behind Emacs's back".
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992* Read Only Buffers:: Modifying text is not allowed in a
993 read-only buffer.
994* The Buffer List:: How to look at all the existing buffers.
995* Creating Buffers:: Functions that create buffers.
996* Killing Buffers:: Buffers exist until explicitly killed.
997* Indirect Buffers:: An indirect buffer shares text with some
998 other buffer.
acc8b598 999* Swapping Text:: Swapping text between two buffers.
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1000* Buffer Gap:: The gap in the buffer.
1001
1002Windows
1003
1004* Basic Windows:: Basic information on using windows.
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1005* Windows and Frames:: Relating windows to the frame they appear on.
1006* Window Sizes:: Accessing a window's size.
1007* Resizing Windows:: Changing the sizes of windows.
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1008* Splitting Windows:: Splitting one window into two windows.
1009* Deleting Windows:: Deleting a window gives its space to other windows.
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1010* Recombining Windows:: Preserving the frame layout when splitting and
1011 deleting windows.
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1012* Selecting Windows:: The selected window is the one that you edit in.
1013* Cyclic Window Ordering:: Moving around the existing windows.
1014* Buffers and Windows:: Each window displays the contents of a buffer.
0e406a72 1015* Switching Buffers:: Higher-level functions for switching to a buffer.
d24880de 1016* Choosing Window:: How to choose a window for displaying a buffer.
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1017* Display Action Functions:: Subroutines for @code{display-buffer}.
1018* Choosing Window Options:: Extra options affecting how buffers are displayed.
0e406a72 1019* Window History:: Each window remembers the buffers displayed in it.
d24880de 1020* Dedicated Windows:: How to avoid displaying another buffer in
b33b68a3 1021 a specific window.
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1022* Quitting Windows:: How to restore the state prior to displaying a
1023 buffer.
b8d4c8d0 1024* Window Point:: Each window has its own location of point.
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1025* Window Start and End:: Buffer positions indicating which text is
1026 on-screen in a window.
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1027* Textual Scrolling:: Moving text up and down through the window.
1028* Vertical Scrolling:: Moving the contents up and down on the window.
1029* Horizontal Scrolling:: Moving the contents sideways on the window.
b8d4c8d0 1030* Coordinates and Windows:: Converting coordinates to windows.
b8d4c8d0 1031* Window Configurations:: Saving and restoring the state of the screen.
efafc282 1032* Window Parameters:: Associating additional information with windows.
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1033* Window Hooks:: Hooks for scrolling, window size changes,
1034 redisplay going past a certain point,
1035 or window configuration changes.
1036
1037Frames
1038
d24880de 1039* Creating Frames:: Creating additional frames.
3ec61d4e 1040* Multiple Terminals:: Displaying on several different devices.
d24880de 1041* Frame Parameters:: Controlling frame size, position, font, etc.
df05a163 1042* Terminal Parameters:: Parameters common for all frames on terminal.
b8d4c8d0 1043* Frame Titles:: Automatic updating of frame titles.
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1044* Deleting Frames:: Frames last until explicitly deleted.
1045* Finding All Frames:: How to examine all existing frames.
b8d4c8d0 1046* Minibuffers and Frames:: How a frame finds the minibuffer to use.
d24880de 1047* Input Focus:: Specifying the selected frame.
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1048* Visibility of Frames:: Frames may be visible or invisible, or icons.
1049* Raising and Lowering:: Raising a frame makes it hide other windows;
d24880de 1050 lowering it makes the others hide it.
b8d4c8d0 1051* Frame Configurations:: Saving the state of all frames.
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1052* Mouse Tracking:: Getting events that say when the mouse moves.
1053* Mouse Position:: Asking where the mouse is, or moving it.
1054* Pop-Up Menus:: Displaying a menu for the user to select from.
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1055* Dialog Boxes:: Displaying a box to ask yes or no.
1056* Pointer Shape:: Specifying the shape of the mouse pointer.
561c0216 1057* Window System Selections::Transferring text to and from other X clients.
b8d4c8d0 1058* Drag and Drop:: Internals of Drag-and-Drop implementation.
d24880de 1059* Color Names:: Getting the definitions of color names.
a08a07e3 1060* Text Terminal Colors:: Defining colors for text terminals.
d24880de 1061* Resources:: Getting resource values from the server.
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1062* Display Feature Testing:: Determining the features of a terminal.
1063
1064Frame Parameters
1065
1066* Parameter Access:: How to change a frame's parameters.
d24880de 1067* Initial Parameters:: Specifying frame parameters when you make a frame.
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1068* Window Frame Parameters:: List of frame parameters for window systems.
1069* Size and Position:: Changing the size and position of a frame.
1070* Geometry:: Parsing geometry specifications.
1071
1072Window Frame Parameters
1073
1074* Basic Parameters:: Parameters that are fundamental.
1075* Position Parameters:: The position of the frame on the screen.
1076* Size Parameters:: Frame's size.
1077* Layout Parameters:: Size of parts of the frame, and
1078 enabling or disabling some parts.
1079* Buffer Parameters:: Which buffers have been or should be shown.
1080* Management Parameters:: Communicating with the window manager.
1081* Cursor Parameters:: Controlling the cursor appearance.
561c0216 1082* Font and Color Parameters:: Fonts and colors for the frame text.
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1083
1084Positions
1085
1086* Point:: The special position where editing takes place.
1087* Motion:: Changing point.
1088* Excursions:: Temporary motion and buffer changes.
1089* Narrowing:: Restricting editing to a portion of the buffer.
1090
1091Motion
1092
1093* Character Motion:: Moving in terms of characters.
1094* Word Motion:: Moving in terms of words.
1095* Buffer End Motion:: Moving to the beginning or end of the buffer.
1096* Text Lines:: Moving in terms of lines of text.
1097* Screen Lines:: Moving in terms of lines as displayed.
1098* List Motion:: Moving by parsing lists and sexps.
1099* Skipping Characters:: Skipping characters belonging to a certain set.
1100
1101Markers
1102
1103* Overview of Markers:: The components of a marker, and how it relocates.
1104* Predicates on Markers:: Testing whether an object is a marker.
1105* Creating Markers:: Making empty markers or markers at certain places.
561c0216 1106* Information from Markers::Finding the marker's buffer or character position.
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1107* Marker Insertion Types:: Two ways a marker can relocate when you
1108 insert where it points.
1109* Moving Markers:: Moving the marker to a new buffer or position.
1110* The Mark:: How "the mark" is implemented with a marker.
1111* The Region:: How to access "the region".
1112
1113Text
1114
1115* Near Point:: Examining text in the vicinity of point.
1116* Buffer Contents:: Examining text in a general fashion.
1117* Comparing Text:: Comparing substrings of buffers.
1118* Insertion:: Adding new text to a buffer.
1119* Commands for Insertion:: User-level commands to insert text.
1120* Deletion:: Removing text from a buffer.
1121* User-Level Deletion:: User-level commands to delete text.
1122* The Kill Ring:: Where removed text sometimes is saved for
1123 later use.
1124* Undo:: Undoing changes to the text of a buffer.
1125* Maintaining Undo:: How to enable and disable undo information.
d24880de 1126 How to control how much information is kept.
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1127* Filling:: Functions for explicit filling.
1128* Margins:: How to specify margins for filling commands.
1129* Adaptive Fill:: Adaptive Fill mode chooses a fill prefix
1130 from context.
1131* Auto Filling:: How auto-fill mode is implemented to break lines.
1132* Sorting:: Functions for sorting parts of the buffer.
1133* Columns:: Computing horizontal positions, and using them.
1134* Indentation:: Functions to insert or adjust indentation.
1135* Case Changes:: Case conversion of parts of the buffer.
1136* Text Properties:: Assigning Lisp property lists to text characters.
1137* Substitution:: Replacing a given character wherever it appears.
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1138* Registers:: How registers are implemented. Accessing
1139 the text or position stored in a register.
d4913798 1140* Transposition:: Swapping two portions of a buffer.
b8d4c8d0 1141* Base 64:: Conversion to or from base 64 encoding.
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1142* Checksum/Hash:: Computing cryptographic hashes.
1143* Parsing HTML/XML:: Parsing HTML and XML.
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1144* Atomic Changes:: Installing several buffer changes "atomically".
1145* Change Hooks:: Supplying functions to be run when text is changed.
1146
1147The Kill Ring
1148
1149* Kill Ring Concepts:: What text looks like in the kill ring.
1150* Kill Functions:: Functions that kill text.
1151* Yanking:: How yanking is done.
1152* Yank Commands:: Commands that access the kill ring.
d24880de 1153* Low-Level Kill Ring:: Functions and variables for kill ring access.
561c0216 1154* Internals of Kill Ring:: Variables that hold kill ring data.
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1155
1156Indentation
1157
1158* Primitive Indent:: Functions used to count and insert indentation.
1159* Mode-Specific Indent:: Customize indentation for different modes.
1160* Region Indent:: Indent all the lines in a region.
1161* Relative Indent:: Indent the current line based on previous lines.
1162* Indent Tabs:: Adjustable, typewriter-like tab stops.
1163* Motion by Indent:: Move to first non-blank character.
1164
1165Text Properties
1166
1167* Examining Properties:: Looking at the properties of one character.
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1168* Changing Properties:: Setting the properties of a range of text.
1169* Property Search:: Searching for where a property changes value.
1170* Special Properties:: Particular properties with special meanings.
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1171* Format Properties:: Properties for representing formatting of text.
1172* Sticky Properties:: How inserted text gets properties from
1173 neighboring text.
1174* Lazy Properties:: Computing text properties in a lazy fashion
1175 only when text is examined.
1176* Clickable Text:: Using text properties to make regions of text
1177 do something when you click on them.
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1178* Fields:: The @code{field} property defines
1179 fields within the buffer.
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1180* Not Intervals:: Why text properties do not use
1181 Lisp-visible text intervals.
b8d4c8d0 1182
561c0216 1183Non-@acronym{ASCII} Characters
b8d4c8d0 1184
561c0216 1185* Text Representations:: How Emacs represents text.
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1186* Converting Representations:: Converting unibyte to multibyte and vice versa.
1187* Selecting a Representation:: Treating a byte sequence as unibyte or multi.
1188* Character Codes:: How unibyte and multibyte relate to
1189 codes of individual characters.
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1190* Character Properties:: Character attributes that define their
1191 behavior and handling.
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1192* Character Sets:: The space of possible character codes
1193 is divided into various character sets.
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1194* Scanning Charsets:: Which character sets are used in a buffer?
1195* Translation of Characters:: Translation tables are used for conversion.
1196* Coding Systems:: Coding systems are conversions for saving files.
1197* Input Methods:: Input methods allow users to enter various
1198 non-ASCII characters without special keyboards.
1199* Locales:: Interacting with the POSIX locale.
1200
1201Coding Systems
1202
1203* Coding System Basics:: Basic concepts.
1204* Encoding and I/O:: How file I/O functions handle coding systems.
1205* Lisp and Coding Systems:: Functions to operate on coding system names.
1206* User-Chosen Coding Systems:: Asking the user to choose a coding system.
1207* Default Coding Systems:: Controlling the default choices.
1208* Specifying Coding Systems:: Requesting a particular coding system
1209 for a single file operation.
1210* Explicit Encoding:: Encoding or decoding text without doing I/O.
1211* Terminal I/O Encoding:: Use of encoding for terminal I/O.
1212* MS-DOS File Types:: How DOS "text" and "binary" files
1213 relate to coding systems.
1214
1215Searching and Matching
1216
1217* String Search:: Search for an exact match.
1218* Searching and Case:: Case-independent or case-significant searching.
1219* Regular Expressions:: Describing classes of strings.
1220* Regexp Search:: Searching for a match for a regexp.
1221* POSIX Regexps:: Searching POSIX-style for the longest match.
1222* Match Data:: Finding out which part of the text matched,
1223 after a string or regexp search.
d24880de 1224* Search and Replace:: Commands that loop, searching and replacing.
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1225* Standard Regexps:: Useful regexps for finding sentences, pages,...
1226
1227Regular Expressions
1228
1229* Syntax of Regexps:: Rules for writing regular expressions.
1230* Regexp Example:: Illustrates regular expression syntax.
1231* Regexp Functions:: Functions for operating on regular expressions.
1232
1233Syntax of Regular Expressions
1234
1235* Regexp Special:: Special characters in regular expressions.
1236* Char Classes:: Character classes used in regular expressions.
1237* Regexp Backslash:: Backslash-sequences in regular expressions.
1238
1239The Match Data
1240
d24880de 1241* Replacing Match:: Replacing a substring that was matched.
b8d4c8d0 1242* Simple Match Data:: Accessing single items of match data,
d24880de 1243 such as where a particular subexpression started.
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1244* Entire Match Data:: Accessing the entire match data at once, as a list.
1245* Saving Match Data:: Saving and restoring the match data.
1246
1247Syntax Tables
1248
1249* Syntax Basics:: Basic concepts of syntax tables.
1250* Syntax Descriptors:: How characters are classified.
1251* Syntax Table Functions:: How to create, examine and alter syntax tables.
1252* Syntax Properties:: Overriding syntax with text properties.
d24880de 1253* Motion and Syntax:: Moving over characters with certain syntaxes.
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1254* Parsing Expressions:: Parsing balanced expressions
1255 using the syntax table.
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1256* Syntax Table Internals:: How syntax table information is stored.
1257* Categories:: Another way of classifying character syntax.
1258
1259Syntax Descriptors
1260
1261* Syntax Class Table:: Table of syntax classes.
1262* Syntax Flags:: Additional flags each character can have.
1263
1264Parsing Expressions
1265
1266* Motion via Parsing:: Motion functions that work by parsing.
1267* Position Parse:: Determining the syntactic state of a position.
1268* Parser State:: How Emacs represents a syntactic state.
1269* Low-Level Parsing:: Parsing across a specified region.
1270* Control Parsing:: Parameters that affect parsing.
1271
561c0216 1272Abbrevs and Abbrev Expansion
b8d4c8d0 1273
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1274* Abbrev Tables:: Creating and working with abbrev tables.
1275* Defining Abbrevs:: Specifying abbreviations and their expansions.
1276* Abbrev Files:: Saving abbrevs in files.
1277* Abbrev Expansion:: Controlling expansion; expansion subroutines.
1278* Standard Abbrev Tables:: Abbrev tables used by various major modes.
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GM
1279* Abbrev Properties:: How to read and set abbrev properties.
1280 Which properties have which effect.
1281* Abbrev Table Properties:: How to read and set abbrev table properties.
1282 Which properties have which effect.
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1283
1284Processes
1285
1286* Subprocess Creation:: Functions that start subprocesses.
1287* Shell Arguments:: Quoting an argument to pass it to a shell.
1288* Synchronous Processes:: Details of using synchronous subprocesses.
1289* Asynchronous Processes:: Starting up an asynchronous subprocess.
1290* Deleting Processes:: Eliminating an asynchronous subprocess.
1291* Process Information:: Accessing run-status and other attributes.
1292* Input to Processes:: Sending input to an asynchronous subprocess.
1293* Signals to Processes:: Stopping, continuing or interrupting
1294 an asynchronous subprocess.
1295* Output from Processes:: Collecting output from an asynchronous subprocess.
1296* Sentinels:: Sentinels run when process run-status changes.
1297* Query Before Exit:: Whether to query if exiting will kill a process.
a65f6a85 1298* System Processes:: Accessing other processes running on your system.
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1299* Transaction Queues:: Transaction-based communication with subprocesses.
1300* Network:: Opening network connections.
1301* Network Servers:: Network servers let Emacs accept net connections.
1302* Datagrams:: UDP network connections.
1303* Low-Level Network:: Lower-level but more general function
1304 to create connections and servers.
cf988578 1305* Misc Network:: Additional relevant functions for net connections.
c73e02fa 1306* Serial Ports:: Communicating with serial ports.
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1307* Byte Packing:: Using bindat to pack and unpack binary data.
1308
1309Receiving Output from Processes
1310
1311* Process Buffers:: If no filter, output is put in a buffer.
1312* Filter Functions:: Filter functions accept output from the process.
1313* Decoding Output:: Filters can get unibyte or multibyte strings.
1314* Accepting Output:: How to wait until process output arrives.
1315
1316Low-Level Network Access
1317
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GM
1318* Network Processes:: Using @code{make-network-process}.
1319* Network Options:: Further control over network connections.
1320* Network Feature Testing:: Determining which network features work on
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1321 the machine you are using.
1322
1323Packing and Unpacking Byte Arrays
1324
1325* Bindat Spec:: Describing data layout.
1326* Bindat Functions:: Doing the unpacking and packing.
1327* Bindat Examples:: Samples of what bindat.el can do for you!
1328
1329Emacs Display
1330
1331* Refresh Screen:: Clearing the screen and redrawing everything on it.
1332* Forcing Redisplay:: Forcing redisplay.
1333* Truncation:: Folding or wrapping long text lines.
1334* The Echo Area:: Displaying messages at the bottom of the screen.
1335* Warnings:: Displaying warning messages for the user.
1336* Invisible Text:: Hiding part of the buffer text.
1337* Selective Display:: Hiding part of the buffer text (the old way).
1338* Temporary Displays:: Displays that go away automatically.
d24880de 1339* Overlays:: Use overlays to highlight parts of the buffer.
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1340* Width:: How wide a character or string is on the screen.
1341* Line Height:: Controlling the height of lines.
d24880de 1342* Faces:: A face defines a graphics style
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1343 for text characters: font, colors, etc.
1344* Fringes:: Controlling window fringes.
1345* Scroll Bars:: Controlling vertical scroll bars.
1346* Display Property:: Enabling special display features.
1347* Images:: Displaying images in Emacs buffers.
1348* Buttons:: Adding clickable buttons to Emacs buffers.
44e97401 1349* Abstract Display:: Emacs's Widget for Object Collections.
b8d4c8d0 1350* Blinking:: How Emacs shows the matching open parenthesis.
9a69676a 1351* Character Display:: How Emacs displays individual characters.
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1352* Beeping:: Audible signal to the user.
1353* Window Systems:: Which window system is being used.
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CY
1354* Bidirectional Display:: Display of bidirectional scripts, such as
1355 Arabic and Farsi.
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1356
1357The Echo Area
1358
1359* Displaying Messages:: Explicitly displaying text in the echo area.
1360* Progress:: Informing user about progress of a long operation.
1361* Logging Messages:: Echo area messages are logged for the user.
1362* Echo Area Customization:: Controlling the echo area.
1363
1364Reporting Warnings
1365
1366* Warning Basics:: Warnings concepts and functions to report them.
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GM
1367* Warning Variables:: Variables programs bind to customize
1368 their warnings.
b8d4c8d0 1369* Warning Options:: Variables users set to control display of warnings.
3d439cd1 1370* Delayed Warnings:: Deferring a warning until the end of a command.
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1371
1372Overlays
1373
1374* Managing Overlays:: Creating and moving overlays.
1375* Overlay Properties:: How to read and set properties.
d24880de 1376 What properties do to the screen display.
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1377* Finding Overlays:: Searching for overlays.
1378
1379Faces
1380
b8d4c8d0 1381* Face Attributes:: What is in a face?
ed1f0bd3 1382* Defining Faces:: How to define a face.
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1383* Attribute Functions:: Functions to examine and set face attributes.
1384* Displaying Faces:: How Emacs combines the faces specified for
1385 a character.
606061b9 1386* Face Remapping:: Remapping faces to alternative definitions.
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1387* Face Functions:: How to define and examine faces.
1388* Auto Faces:: Hook for automatic face assignment.
35137ed3 1389* Basic Faces:: Faces that are defined by default.
606061b9 1390* Font Selection:: Finding the best available font for a face.
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1391* Font Lookup:: Looking up the names of available fonts
1392 and information about them.
1393* Fontsets:: A fontset is a collection of fonts
1394 that handle a range of character sets.
561c0216 1395* Low-Level Font:: Lisp representation for character display fonts.
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1396
1397Fringes
1398
1399* Fringe Size/Pos:: Specifying where to put the window fringes.
1400* Fringe Indicators:: Displaying indicator icons in the window fringes.
1401* Fringe Cursors:: Displaying cursors in the right fringe.
1402* Fringe Bitmaps:: Specifying bitmaps for fringe indicators.
1403* Customizing Bitmaps:: Specifying your own bitmaps to use in the fringes.
1404* Overlay Arrow:: Display of an arrow to indicate position.
1405
1406The @code{display} Property
1407
561c0216 1408* Replacing Specs:: Display specs that replace the text.
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1409* Specified Space:: Displaying one space with a specified width.
1410* Pixel Specification:: Specifying space width or height in pixels.
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1411* Other Display Specs:: Displaying an image; adjusting the height,
1412 spacing, and other properties of text.
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1413* Display Margins:: Displaying text or images to the side of
1414 the main text.
1415
1416Images
1417
561c0216 1418* Image Formats:: Supported image formats.
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1419* Image Descriptors:: How to specify an image for use in @code{:display}.
1420* XBM Images:: Special features for XBM format.
1421* XPM Images:: Special features for XPM format.
1422* GIF Images:: Special features for GIF format.
561c0216 1423* TIFF Images:: Special features for TIFF format.
2833b3ff 1424* PostScript Images:: Special features for PostScript format.
cf988578 1425* ImageMagick Images:: Special features available through ImageMagick.
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1426* Other Image Types:: Various other formats are supported.
1427* Defining Images:: Convenient ways to define an image for later use.
1428* Showing Images:: Convenient ways to display an image once
1429 it is defined.
eea14f31 1430* Animated Images:: Some image formats can be animated.
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1431* Image Cache:: Internal mechanisms of image display.
1432
1433Buttons
1434
1435* Button Properties:: Button properties with special meanings.
1436* Button Types:: Defining common properties for classes of buttons.
1437* Making Buttons:: Adding buttons to Emacs buffers.
1438* Manipulating Buttons:: Getting and setting properties of buttons.
1439* Button Buffer Commands:: Buffer-wide commands and bindings for buttons.
1440
1441Abstract Display
1442
1443* Abstract Display Functions:: Functions in the Ewoc package.
1444* Abstract Display Example:: Example of using Ewoc.
1445
9a69676a 1446Character Display
b8d4c8d0 1447
9a69676a
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1448* Usual Display:: The usual conventions for displaying characters.
1449* Display Tables:: What a display table consists of.
1450* Active Display Table:: How Emacs selects a display table to use.
1451* Glyphs:: How to define a glyph, and what glyphs mean.
1452* Glyphless Chars:: How glyphless characters are drawn.
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1453
1454Operating System Interface
1455
561c0216 1456* Starting Up:: Customizing Emacs startup processing.
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1457* Getting Out:: How exiting works (permanent or temporary).
1458* System Environment:: Distinguish the name and kind of system.
1459* User Identification:: Finding the name and user id of the user.
d24880de 1460* Time of Day:: Getting the current time.
333f9019 1461* Time Conversion:: Converting a time from numeric form to
561c0216 1462 calendrical data and vice versa.
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1463* Time Parsing:: Converting a time from numeric form to text
1464 and vice versa.
1465* Processor Run Time:: Getting the run time used by Emacs.
1466* Time Calculations:: Adding, subtracting, comparing times, etc.
d24880de 1467* Timers:: Setting a timer to call a function at a
561c0216 1468 certain time.
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1469* Idle Timers:: Setting a timer to call a function when Emacs has
1470 been idle for a certain length of time.
1471* Terminal Input:: Accessing and recording terminal input.
1472* Terminal Output:: Controlling and recording terminal output.
1473* Sound Output:: Playing sounds on the computer's speaker.
121e43fd 1474* X11 Keysyms:: Operating on key symbols for X Windows.
b8d4c8d0 1475* Batch Mode:: Running Emacs without terminal interaction.
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GM
1476* Session Management:: Saving and restoring state with
1477 X Session Management.
9ff687e1
MA
1478* Notifications:: Desktop notifications.
1479* Dynamic Libraries:: On-demand loading of support libraries.
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1480
1481Starting Up Emacs
1482
561c0216
GM
1483* Startup Summary:: Sequence of actions Emacs performs at startup.
1484* Init File:: Details on reading the init file.
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1485* Terminal-Specific:: How the terminal-specific Lisp file is read.
1486* Command-Line Arguments:: How command-line arguments are processed,
1487 and how you can customize them.
1488
1489Getting Out of Emacs
1490
1491* Killing Emacs:: Exiting Emacs irreversibly.
1492* Suspending Emacs:: Exiting Emacs reversibly.
1493
1494Terminal Input
1495
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1496* Input Modes:: Options for how input is processed.
1497* Recording Input:: Saving histories of recent or all input events.
b8d4c8d0 1498
cf988578
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1499Preparing Lisp code for distribution
1500
1501* Packaging Basics:: The basic concepts of Emacs Lisp packages.
1502* Simple Packages:: How to package a single .el file.
1503* Multi-file Packages:: How to package multiple files.
1504* Package Archives:: Maintaining package archives.
1505
b8d4c8d0
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1506Tips and Conventions
1507
1508* Coding Conventions:: Conventions for clean and robust programs.
1509* Key Binding Conventions:: Which keys should be bound by which programs.
1510* Programming Tips:: Making Emacs code fit smoothly in Emacs.
1511* Compilation Tips:: Making compiled code run fast.
1512* Warning Tips:: Turning off compiler warnings.
1513* Documentation Tips:: Writing readable documentation strings.
d24880de 1514* Comment Tips:: Conventions for writing comments.
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1515* Library Headers:: Standard headers for library packages.
1516
1517GNU Emacs Internals
1518
1519* Building Emacs:: How the dumped Emacs is made.
333f9019 1520* Pure Storage:: Kludge to make preloaded Lisp functions shareable.
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1521* Garbage Collection:: Reclaiming space for Lisp objects no longer used.
1522* Memory Usage:: Info about total size of Lisp objects made so far.
1523* Writing Emacs Primitives:: Writing C code for Emacs.
1524* Object Internals:: Data formats of buffers, windows, processes.
1525
1526Object Internals
1527
1528* Buffer Internals:: Components of a buffer structure.
1529* Window Internals:: Components of a window structure.
1530* Process Internals:: Components of a process structure.
1531@end detailmenu
1532@end menu
1533
5b6eebcf 1534@ifclear VOL2
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1535@include intro.texi
1536@include objects.texi
1537@include numbers.texi
1538@include strings.texi
1539
1540@include lists.texi
1541@include sequences.texi
1542@include hash.texi
1543@include symbols.texi
1544@include eval.texi
1545
1546@include control.texi
1547@include variables.texi
1548@include functions.texi
1549@include macros.texi
1550
1551@include customize.texi
1552@include loading.texi
1553@include compile.texi
1554@include advice.texi
1555
561c0216 1556@c This includes edebug.texi.
b8d4c8d0
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1557@include debugging.texi
1558@include streams.texi
1559@include minibuf.texi
1560@include commands.texi
1561
1562@include keymaps.texi
1563@include modes.texi
1564@include help.texi
1565@include files.texi
1566
1567@include backups.texi
5b6eebcf
GM
1568
1569@end ifclear
1570
1571@c ================ Beginning of Volume 2 ================
1572@ifclear VOL1
1573
b8d4c8d0
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1574@include buffers.texi
1575@include windows.texi
1576@include frames.texi
1577
1578@include positions.texi
1579@include markers.texi
1580@include text.texi
1581@include nonascii.texi
1582
1583@include searching.texi
1584@include syntax.texi
1585@include abbrevs.texi
1586@include processes.texi
1587
1588@include display.texi
1589@include os.texi
1590
fdc76236
TT
1591@include package.texi
1592
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1593@c appendices
1594
b8d4c8d0
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1595@include anti.texi
1596@include doclicense.texi
1597@include gpl.texi
1598@include tips.texi
1599@include internals.texi
1600@include errors.texi
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1601@include maps.texi
1602@include hooks.texi
1603
1604@include index.texi
1605
5b6eebcf
GM
1606@end ifclear
1607
b8d4c8d0 1608@ignore
ecc6530d 1609@node New Symbols
b8d4c8d0
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1610@unnumbered New Symbols Since the Previous Edition
1611
1612@printindex tp
1613@end ignore
1614
1615@bye
1616
1617\f
1618These words prevent "local variables" above from confusing Emacs.