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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
f7a31f11 11@include emacsver.texi
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,
5df4f04c 481999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 Free Software
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49Foundation, Inc.
50
51@quotation
52Permission is granted to copy, distribute and/or modify this document
204d4665 53under the terms of the GNU Free Documentation License, Version 1.3 or
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54any later version published by the Free Software Foundation; with the
55Invariant Sections being ``GNU General Public License,'' with the
56Front-Cover texts being ``A GNU Manual,'' and with the Back-Cover
57Texts as in (a) below. A copy of the license is included in the
58section entitled ``GNU Free Documentation License.''
59
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60(a) The FSF's Back-Cover Text is: ``You have the freedom to copy and
61modify this GNU manual. Buying copies from the FSF supports it in
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62developing GNU and promoting software freedom.''
63@end quotation
64@end copying
65
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66@dircategory Emacs
67@direntry
68* Elisp: (elisp). The Emacs Lisp Reference Manual.
69@end direntry
70
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71@titlepage
72@title GNU Emacs Lisp Reference Manual
73@subtitle For Emacs Version @value{EMACSVER}
f751a2ae 74@subtitle Revision @value{VERSION}, @value{DATE}
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75
76@author by Bil Lewis, Dan LaLiberte, Richard Stallman
77@author and the GNU Manual Group
78@page
79@vskip 0pt plus 1filll
80@insertcopying
81
82@sp 2
83Published by the Free Software Foundation @*
8451 Franklin St, Fifth Floor @*
85Boston, MA 02110-1301 @*
86USA @*
87ISBN 1-882114-74-4
88
89@sp 2
90Cover art by Etienne Suvasa.
91@end titlepage
92
93
94@c Print the tables of contents
95@summarycontents
96@contents
97
98
99@ifnottex
100@node Top, Introduction, (dir), (dir)
101@top Emacs Lisp
102
5300838c 103@insertcopying
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104@end ifnottex
105
f751a2ae 106@c Copy any updates to vol1.texi and vol2.texi.
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107@menu
108* Introduction:: Introduction and conventions used.
109
110* Lisp Data Types:: Data types of objects in Emacs Lisp.
111* Numbers:: Numbers and arithmetic functions.
112* Strings and Characters:: Strings, and functions that work on them.
113* Lists:: Lists, cons cells, and related functions.
114* Sequences Arrays Vectors:: Lists, strings and vectors are called sequences.
115 Certain functions act on any kind of sequence.
116 The description of vectors is here as well.
117* Hash Tables:: Very fast lookup-tables.
118* Symbols:: Symbols represent names, uniquely.
119
120* Evaluation:: How Lisp expressions are evaluated.
121* Control Structures:: Conditionals, loops, nonlocal exits.
122* Variables:: Using symbols in programs to stand for values.
123* Functions:: A function is a Lisp program
124 that can be invoked from other functions.
125* Macros:: Macros are a way to extend the Lisp language.
126* Customization:: Writing customization declarations.
127
128* Loading:: Reading files of Lisp code into Lisp.
129* Byte Compilation:: Compilation makes programs run faster.
130* Advising Functions:: Adding to the definition of a function.
131* Debugging:: Tools and tips for debugging Lisp programs.
132
133* Read and Print:: Converting Lisp objects to text and back.
134* Minibuffers:: Using the minibuffer to read input.
135* Command Loop:: How the editor command loop works,
136 and how you can call its subroutines.
137* Keymaps:: Defining the bindings from keys to commands.
138* Modes:: Defining major and minor modes.
139* Documentation:: Writing and using documentation strings.
140
141* Files:: Accessing files.
142* Backups and Auto-Saving:: Controlling how backups and auto-save
143 files are made.
144* Buffers:: Creating and using buffer objects.
145* Windows:: Manipulating windows and displaying buffers.
d24880de 146* Frames:: Making multiple system-level windows.
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147* Positions:: Buffer positions and motion functions.
148* Markers:: Markers represent positions and update
149 automatically when the text is changed.
150
151* Text:: Examining and changing text in buffers.
152* Non-ASCII Characters:: Non-ASCII text in buffers and strings.
153* Searching and Matching:: Searching buffers for strings or regexps.
154* Syntax Tables:: The syntax table controls word and list parsing.
155* Abbrevs:: How Abbrev mode works, and its data structures.
156
157* Processes:: Running and communicating with subprocesses.
d24880de 158* Display:: Features for controlling the screen display.
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159* System Interface:: Getting the user id, system type, environment
160 variables, and other such things.
161
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162* Packaging:: Preparing Lisp code for distribution.
163
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164Appendices
165
f751a2ae 166* Antinews:: Info for users downgrading to Emacs 22.
561c0216 167* GNU Free Documentation License:: The license for this documentation.
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168* GPL:: Conditions for copying and changing GNU Emacs.
169* Tips:: Advice and coding conventions for Emacs Lisp.
170* GNU Emacs Internals:: Building and dumping Emacs;
171 internal data structures.
172* Standard Errors:: List of all error symbols.
173* Standard Buffer-Local Variables::
174 List of variables buffer-local in all buffers.
175* Standard Keymaps:: List of standard keymaps.
176* Standard Hooks:: List of standard hook variables.
177
178* Index:: Index including concepts, functions, variables,
179 and other terms.
180
181@ignore
182* New Symbols:: New functions and variables in Emacs @value{EMACSVER}.
183@end ignore
184
185@c Do NOT modify the following 3 lines! They must have this form to
186@c be correctly identified by `texinfo-multiple-files-update'. In
187@c particular, the detailed menu header line MUST be identical to the
188@c value of `texinfo-master-menu-header'. See texnfo-upd.el.
f751a2ae 189@c Copy any updates to vol1.texi and vol2.texi.
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190
191@detailmenu
192 --- The Detailed Node Listing ---
193 ---------------------------------
194
195Here are other nodes that are inferiors of those already listed,
196mentioned here so you can get to them in one step:
197
198Introduction
199
200* Caveats:: Flaws and a request for help.
201* Lisp History:: Emacs Lisp is descended from Maclisp.
202* Conventions:: How the manual is formatted.
203* Version Info:: Which Emacs version is running?
204* Acknowledgements:: The authors, editors, and sponsors of this manual.
205
206Conventions
207
208* Some Terms:: Explanation of terms we use in this manual.
209* nil and t:: How the symbols @code{nil} and @code{t} are used.
210* Evaluation Notation:: The format we use for examples of evaluation.
561c0216 211* Printing Notation:: The format we use when examples print text.
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212* Error Messages:: The format we use for examples of errors.
213* Buffer Text Notation:: The format we use for buffer contents in examples.
214* Format of Descriptions:: Notation for describing functions, variables, etc.
215
216Format of Descriptions
217
218* A Sample Function Description:: A description of an imaginary
219 function, @code{foo}.
220* A Sample Variable Description:: A description of an imaginary
221 variable, @code{electric-future-map}.
222
223Lisp Data Types
224
225* Printed Representation:: How Lisp objects are represented as text.
226* Comments:: Comments and their formatting conventions.
227* Programming Types:: Types found in all Lisp systems.
228* Editing Types:: Types specific to Emacs.
121e43fd 229* Circular Objects:: Read syntax for circular structure.
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230* Type Predicates:: Tests related to types.
231* Equality Predicates:: Tests of equality between any two objects.
232
233Programming Types
234
235* Integer Type:: Numbers without fractional parts.
236* Floating Point Type:: Numbers with fractional parts and with a large range.
237* Character Type:: The representation of letters, numbers and
238 control characters.
239* Symbol Type:: A multi-use object that refers to a function,
561c0216 240 variable, or property list, and has a unique identity.
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241* Sequence Type:: Both lists and arrays are classified as sequences.
242* Cons Cell Type:: Cons cells, and lists (which are made from cons cells).
243* Array Type:: Arrays include strings and vectors.
244* String Type:: An (efficient) array of characters.
245* Vector Type:: One-dimensional arrays.
246* Char-Table Type:: One-dimensional sparse arrays indexed by characters.
247* Bool-Vector Type:: One-dimensional arrays of @code{t} or @code{nil}.
248* Hash Table Type:: Super-fast lookup tables.
249* Function Type:: A piece of executable code you can call from elsewhere.
250* Macro Type:: A method of expanding an expression into another
251 expression, more fundamental but less pretty.
252* Primitive Function Type:: A function written in C, callable from Lisp.
253* Byte-Code Type:: A function written in Lisp, then compiled.
254* Autoload Type:: A type used for automatically loading seldom-used
255 functions.
256
257Character Type
258
259* Basic Char Syntax:: Syntax for regular characters.
260* General Escape Syntax:: How to specify characters by their codes.
261* Ctl-Char Syntax:: Syntax for control characters.
262* Meta-Char Syntax:: Syntax for meta-characters.
263* Other Char Bits:: Syntax for hyper-, super-, and alt-characters.
264
265Cons Cell and List Types
266
267* Box Diagrams:: Drawing pictures of lists.
561c0216 268* Dotted Pair Notation:: A general syntax for cons cells.
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269* Association List Type:: A specially constructed list.
270
271String Type
272
273* Syntax for Strings:: How to specify Lisp strings.
274* Non-ASCII in Strings:: International characters in strings.
275* Nonprinting Characters:: Literal unprintable characters in strings.
276* Text Props and Strings:: Strings with text properties.
277
278Editing Types
279
280* Buffer Type:: The basic object of editing.
281* Marker Type:: A position in a buffer.
561c0216 282* Window Type:: Buffers are displayed in windows.
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283* Frame Type:: Windows subdivide frames.
284* Terminal Type:: A terminal device displays frames.
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285* Window Configuration Type:: Recording the way a frame is subdivided.
286* Frame Configuration Type:: Recording the status of all frames.
a65f6a85 287* Process Type:: A subprocess of Emacs running on the underlying OS.
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288* Stream Type:: Receive or send characters.
289* Keymap Type:: What function a keystroke invokes.
290* Overlay Type:: How an overlay is represented.
3a6aa965 291* Font Type:: Fonts for displaying text.
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292
293Numbers
294
295* Integer Basics:: Representation and range of integers.
d24880de 296* Float Basics:: Representation and range of floating point.
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297* Predicates on Numbers:: Testing for numbers.
298* Comparison of Numbers:: Equality and inequality predicates.
d24880de 299* Numeric Conversions:: Converting float to integer and vice versa.
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300* Arithmetic Operations:: How to add, subtract, multiply and divide.
301* Rounding Operations:: Explicitly rounding floating point numbers.
302* Bitwise Operations:: Logical and, or, not, shifting.
303* Math Functions:: Trig, exponential and logarithmic functions.
304* Random Numbers:: Obtaining random integers, predictable or not.
305
306Strings and Characters
307
308* String Basics:: Basic properties of strings and characters.
309* Predicates for Strings:: Testing whether an object is a string or char.
310* Creating Strings:: Functions to allocate new strings.
121e43fd 311* Modifying Strings:: Altering the contents of an existing string.
b8d4c8d0 312* Text Comparison:: Comparing characters or strings.
561c0216 313* String Conversion:: Converting to and from characters and strings.
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314* Formatting Strings:: @code{format}: Emacs's analogue of @code{printf}.
315* Case Conversion:: Case conversion functions.
d24880de 316* Case Tables:: Customizing case conversion.
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317
318Lists
319
320* Cons Cells:: How lists are made out of cons cells.
321* List-related Predicates:: Is this object a list? Comparing two lists.
322* List Elements:: Extracting the pieces of a list.
323* Building Lists:: Creating list structure.
324* List Variables:: Modifying lists stored in variables.
325* Modifying Lists:: Storing new pieces into an existing list.
326* Sets And Lists:: A list can represent a finite mathematical set.
327* Association Lists:: A list can represent a finite relation or mapping.
328* Rings:: Managing a fixed-size ring of objects.
329
330Modifying Existing List Structure
331
332* Setcar:: Replacing an element in a list.
333* Setcdr:: Replacing part of the list backbone.
334 This can be used to remove or add elements.
335* Rearrangement:: Reordering the elements in a list; combining lists.
336
337Sequences, Arrays, and Vectors
338
339* Sequence Functions:: Functions that accept any kind of sequence.
340* Arrays:: Characteristics of arrays in Emacs Lisp.
341* Array Functions:: Functions specifically for arrays.
342* Vectors:: Special characteristics of Emacs Lisp vectors.
343* Vector Functions:: Functions specifically for vectors.
344* Char-Tables:: How to work with char-tables.
345* Bool-Vectors:: How to work with bool-vectors.
346
347Hash Tables
348
349* Creating Hash:: Functions to create hash tables.
350* Hash Access:: Reading and writing the hash table contents.
561c0216 351* Defining Hash:: Defining new comparison methods.
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352* Other Hash:: Miscellaneous.
353
354Symbols
355
356* Symbol Components:: Symbols have names, values, function definitions
357 and property lists.
358* Definitions:: A definition says how a symbol will be used.
359* Creating Symbols:: How symbols are kept unique.
360* Property Lists:: Each symbol has a property list
361 for recording miscellaneous information.
362
363Property Lists
364
365* Plists and Alists:: Comparison of the advantages of property
366 lists and association lists.
367* Symbol Plists:: Functions to access symbols' property lists.
368* Other Plists:: Accessing property lists stored elsewhere.
369
370Evaluation
371
372* Intro Eval:: Evaluation in the scheme of things.
373* Forms:: How various sorts of objects are evaluated.
374* Quoting:: Avoiding evaluation (to put constants in
375 the program).
376* Eval:: How to invoke the Lisp interpreter explicitly.
377
378Kinds of Forms
379
380* Self-Evaluating Forms:: Forms that evaluate to themselves.
381* Symbol Forms:: Symbols evaluate as variables.
382* Classifying Lists:: How to distinguish various sorts of list forms.
383* Function Indirection:: When a symbol appears as the car of a list,
d24880de 384 we find the real function via the symbol.
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385* Function Forms:: Forms that call functions.
386* Macro Forms:: Forms that call macros.
387* Special Forms:: "Special forms" are idiosyncratic primitives,
388 most of them extremely important.
389* Autoloading:: Functions set up to load files
390 containing their real definitions.
391
392Control Structures
393
394* Sequencing:: Evaluation in textual order.
395* Conditionals:: @code{if}, @code{cond}, @code{when}, @code{unless}.
396* Combining Conditions:: @code{and}, @code{or}, @code{not}.
397* Iteration:: @code{while} loops.
398* Nonlocal Exits:: Jumping out of a sequence.
399
400Nonlocal Exits
401
402* Catch and Throw:: Nonlocal exits for the program's own purposes.
403* Examples of Catch:: Showing how such nonlocal exits can be written.
404* Errors:: How errors are signaled and handled.
405* Cleanups:: Arranging to run a cleanup form if an
406 error happens.
407
408Errors
409
410* Signaling Errors:: How to report an error.
411* Processing of Errors:: What Emacs does when you report an error.
412* Handling Errors:: How you can trap errors and continue execution.
413* Error Symbols:: How errors are classified for trapping them.
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414
415Variables
416
417* Global Variables:: Variable values that exist permanently, everywhere.
418* Constant Variables:: Certain "variables" have values that never change.
419* Local Variables:: Variable values that exist only temporarily.
420* Void Variables:: Symbols that lack values.
421* Defining Variables:: A definition says a symbol is used as a variable.
422* Tips for Defining:: Things you should think about when you
423 define a variable.
424* Accessing Variables:: Examining values of variables whose names
425 are known only at run time.
426* Setting Variables:: Storing new values in variables.
427* Variable Scoping:: How Lisp chooses among local and global values.
428* Buffer-Local Variables:: Variable values in effect only in one buffer.
b8d4c8d0 429* File Local Variables:: Handling local variable lists in files.
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430* Directory Local Variables:: Local variables common to all files in a
431 directory.
eaf4b689 432* Frame-Local Variables:: Frame-local bindings for variables.
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433* Variable Aliases:: Variables that are aliases for other variables.
434* Variables with Restricted Values:: Non-constant variables whose value can
435 @emph{not} be an arbitrary Lisp object.
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436
437Scoping Rules for Variable Bindings
438
439* Scope:: Scope means where in the program a value
440 is visible. Comparison with other languages.
441* Extent:: Extent means how long in time a value exists.
442* Impl of Scope:: Two ways to implement dynamic scoping.
443* Using Scoping:: How to use dynamic scoping carefully and
444 avoid problems.
445
446Buffer-Local Variables
447
448* Intro to Buffer-Local:: Introduction and concepts.
449* Creating Buffer-Local:: Creating and destroying buffer-local bindings.
450* Default Value:: The default value is seen in buffers
451 that don't have their own buffer-local values.
452
453Functions
454
561c0216 455* What Is a Function:: Lisp functions vs. primitives; terminology.
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456* Lambda Expressions:: How functions are expressed as Lisp objects.
457* Function Names:: A symbol can serve as the name of a function.
458* Defining Functions:: Lisp expressions for defining functions.
459* Calling Functions:: How to use an existing function.
460* Mapping Functions:: Applying a function to each element of a list, etc.
561c0216 461* Anonymous Functions:: Lambda expressions are functions with no names.
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462* Function Cells:: Accessing or setting the function definition
463 of a symbol.
464* Obsolete Functions:: Declaring functions obsolete.
d24880de 465* Inline Functions:: Defining functions that the compiler
561c0216 466 will open code.
d24880de 467* Declaring Functions:: Telling the compiler that a function is defined.
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468* Function Safety:: Determining whether a function is safe to call.
469* Related Topics:: Cross-references to specific Lisp primitives
470 that have a special bearing on how
471 functions work.
472
473Lambda Expressions
474
475* Lambda Components:: The parts of a lambda expression.
476* Simple Lambda:: A simple example.
477* Argument List:: Details and special features of argument lists.
478* Function Documentation:: How to put documentation in a function.
479
480Macros
481
482* Simple Macro:: A basic example.
483* Expansion:: How, when and why macros are expanded.
484* Compiling Macros:: How macros are expanded by the compiler.
485* Defining Macros:: How to write a macro definition.
486* Backquote:: Easier construction of list structure.
487* Problems with Macros:: Don't evaluate the macro arguments too many times.
488 Don't hide the user's variables.
489* Indenting Macros:: Specifying how to indent macro calls.
490
491Common Problems Using Macros
492
493* Wrong Time:: Do the work in the expansion, not in the macro.
494* Argument Evaluation:: The expansion should evaluate each macro arg once.
495* Surprising Local Vars:: Local variable bindings in the expansion
496 require special care.
497* Eval During Expansion:: Don't evaluate them; put them in the expansion.
498* Repeated Expansion:: Avoid depending on how many times expansion is done.
499
500Writing Customization Definitions
501
502* Common Keywords:: Common keyword arguments for all kinds of
503 customization declarations.
504* Group Definitions:: Writing customization group definitions.
505* Variable Definitions:: Declaring user options.
506* Customization Types:: Specifying the type of a user option.
507
508Customization Types
509
510* Simple Types:: Simple customization types: sexp, integer, number,
511 string, file, directory, alist.
512* Composite Types:: Build new types from other types or data.
513* Splicing into Lists:: Splice elements into list with @code{:inline}.
514* Type Keywords:: Keyword-argument pairs in a customization type.
515* Defining New Types:: Give your type a name.
516
517Loading
518
519* How Programs Do Loading:: The @code{load} function and others.
520* Load Suffixes:: Details about the suffixes that @code{load} tries.
521* Library Search:: Finding a library to load.
522* Loading Non-ASCII:: Non-@acronym{ASCII} characters in Emacs Lisp files.
523* Autoload:: Setting up a function to autoload.
524* Repeated Loading:: Precautions about loading a file twice.
525* Named Features:: Loading a library if it isn't already loaded.
526* Where Defined:: Finding which file defined a certain symbol.
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527* Unloading:: How to "unload" a library that was loaded.
528* Hooks for Loading:: Providing code to be run when
529 particular libraries are loaded.
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530
531Byte Compilation
532
533* Speed of Byte-Code:: An example of speedup from byte compilation.
534* Compilation Functions:: Byte compilation functions.
535* Docs and Compilation:: Dynamic loading of documentation strings.
536* Dynamic Loading:: Dynamic loading of individual functions.
537* Eval During Compile:: Code to be evaluated when you compile.
538* Compiler Errors:: Handling compiler error messages.
d24880de 539* Byte-Code Objects:: The data type used for byte-compiled functions.
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540* Disassembly:: Disassembling byte-code; how to read byte-code.
541
542Advising Emacs Lisp Functions
543
544* Simple Advice:: A simple example to explain the basics of advice.
545* Defining Advice:: Detailed description of @code{defadvice}.
546* Around-Advice:: Wrapping advice around a function's definition.
547* Computed Advice:: ...is to @code{defadvice} as @code{fset} is to @code{defun}.
548* Activation of Advice:: Advice doesn't do anything until you activate it.
549* Enabling Advice:: You can enable or disable each piece of advice.
550* Preactivation:: Preactivation is a way of speeding up the
551 loading of compiled advice.
552* Argument Access in Advice:: How advice can access the function's arguments.
553* Advising Primitives:: Accessing arguments when advising a primitive.
554* Combined Definition:: How advice is implemented.
555
556Debugging Lisp Programs
557
558* Debugger:: How the Emacs Lisp debugger is implemented.
559* Edebug:: A source-level Emacs Lisp debugger.
560* Syntax Errors:: How to find syntax errors.
561* Test Coverage:: Ensuring you have tested all branches in your code.
562* Compilation Errors:: How to find errors that show up in
563 byte compilation.
564
565The Lisp Debugger
566
567* Error Debugging:: Entering the debugger when an error happens.
d24880de 568* Infinite Loops:: Stopping and debugging a program that doesn't exit.
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569* Function Debugging:: Entering it when a certain function is called.
570* Explicit Debug:: Entering it at a certain point in the program.
571* Using Debugger:: What the debugger does; what you see while in it.
572* Debugger Commands:: Commands used while in the debugger.
573* Invoking the Debugger:: How to call the function @code{debug}.
574* Internals of Debugger:: Subroutines of the debugger, and global variables.
575
576Edebug
577
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578* Using Edebug:: Introduction to use of Edebug.
579* Instrumenting:: You must instrument your code
580 in order to debug it with Edebug.
b8d4c8d0 581* Edebug Execution Modes:: Execution modes, stopping more or less often.
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582* Jumping:: Commands to jump to a specified place.
583* Edebug Misc:: Miscellaneous commands.
584* Breaks:: Setting breakpoints to make the program stop.
585* Trapping Errors:: Trapping errors with Edebug.
586* Edebug Views:: Views inside and outside of Edebug.
587* Edebug Eval:: Evaluating expressions within Edebug.
588* Eval List:: Expressions whose values are displayed
589 each time you enter Edebug.
590* Printing in Edebug:: Customization of printing.
591* Trace Buffer:: How to produce trace output in a buffer.
592* Coverage Testing:: How to test evaluation coverage.
593* The Outside Context:: Data that Edebug saves and restores.
b8d4c8d0 594* Edebug and Macros:: Specifying how to handle macro calls.
d24880de 595* Edebug Options:: Option variables for customizing Edebug.
b8d4c8d0 596
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597Breaks
598
599* Breakpoints:: Breakpoints at stop points.
600* Global Break Condition:: Breaking on an event.
601* Source Breakpoints:: Embedding breakpoints in source code.
602
603The Outside Context
604
605* Checking Whether to Stop::When Edebug decides what to do.
606* Edebug Display Update:: When Edebug updates the display.
607* Edebug Recursive Edit:: When Edebug stops execution.
608
609Edebug and Macros
610
611* Instrumenting Macro Calls::The basic problem.
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612* Specification List:: How to specify complex patterns of evaluation.
613* Backtracking:: What Edebug does when matching fails.
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614* Specification Examples:: To help understand specifications.
615
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616Debugging Invalid Lisp Syntax
617
618* Excess Open:: How to find a spurious open paren or missing close.
619* Excess Close:: How to find a spurious close paren or missing open.
620
621Reading and Printing Lisp Objects
622
623* Streams Intro:: Overview of streams, reading and printing.
624* Input Streams:: Various data types that can be used as
625 input streams.
626* Input Functions:: Functions to read Lisp objects from text.
627* Output Streams:: Various data types that can be used as
628 output streams.
629* Output Functions:: Functions to print Lisp objects as text.
630* Output Variables:: Variables that control what the printing
631 functions do.
632
633Minibuffers
634
635* Intro to Minibuffers:: Basic information about minibuffers.
636* Text from Minibuffer:: How to read a straight text string.
637* Object from Minibuffer:: How to read a Lisp object or expression.
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638* Minibuffer History:: Recording previous minibuffer inputs
639 so the user can reuse them.
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640* Initial Input:: Specifying initial contents for the minibuffer.
641* Completion:: How to invoke and customize completion.
642* Yes-or-No Queries:: Asking a question with a simple answer.
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643* Multiple Queries:: Asking a series of similar questions.
644* Reading a Password:: Reading a password from the terminal.
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645* Minibuffer Commands:: Commands used as key bindings in minibuffers.
646* Minibuffer Contents:: How such commands access the minibuffer text.
647* Minibuffer Windows:: Operating on the special minibuffer windows.
648* Recursive Mini:: Whether recursive entry to minibuffer is allowed.
649* Minibuffer Misc:: Various customization hooks and variables.
650
651Completion
652
653* Basic Completion:: Low-level functions for completing strings.
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654* Minibuffer Completion:: Invoking the minibuffer with completion.
655* Completion Commands:: Minibuffer commands that do completion.
656* High-Level Completion:: Convenient special cases of completion
121e43fd 657 (reading buffer name, file name, etc.).
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658* Reading File Names:: Using completion to read file names and
659 shell commands.
745c5f7b 660* Completion Styles:: Specifying rules for performing completion.
561c0216 661* Programmed Completion:: Writing your own completion-function.
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662
663Command Loop
664
665* Command Overview:: How the command loop reads commands.
666* Defining Commands:: Specifying how a function should read arguments.
667* Interactive Call:: Calling a command, so that it will read arguments.
61bbdbc6 668* Distinguish Interactive:: Making a command distinguish interactive calls.
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669* Command Loop Info:: Variables set by the command loop for you to examine.
670* Adjusting Point:: Adjustment of point after a command.
d24880de 671* Input Events:: What input looks like when you read it.
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672* Reading Input:: How to read input events from the keyboard or mouse.
673* Special Events:: Events processed immediately and individually.
674* Waiting:: Waiting for user input or elapsed time.
675* Quitting:: How @kbd{C-g} works. How to catch or defer quitting.
676* Prefix Command Arguments:: How the commands to set prefix args work.
677* Recursive Editing:: Entering a recursive edit,
678 and why you usually shouldn't.
679* Disabling Commands:: How the command loop handles disabled commands.
680* Command History:: How the command history is set up, and how accessed.
681* Keyboard Macros:: How keyboard macros are implemented.
682
683Defining Commands
684
685* Using Interactive:: General rules for @code{interactive}.
686* Interactive Codes:: The standard letter-codes for reading arguments
687 in various ways.
688* Interactive Examples:: Examples of how to read interactive arguments.
689
690Input Events
691
692* Keyboard Events:: Ordinary characters--keys with symbols on them.
693* Function Keys:: Function keys--keys with names, not symbols.
694* Mouse Events:: Overview of mouse events.
695* Click Events:: Pushing and releasing a mouse button.
696* Drag Events:: Moving the mouse before releasing the button.
697* Button-Down Events:: A button was pushed and not yet released.
698* Repeat Events:: Double and triple click (or drag, or down).
699* Motion Events:: Just moving the mouse, not pushing a button.
700* Focus Events:: Moving the mouse between frames.
701* Misc Events:: Other events the system can generate.
702* Event Examples:: Examples of the lists for mouse events.
703* Classifying Events:: Finding the modifier keys in an event symbol.
561c0216 704 Event types.
d24880de 705* Accessing Mouse:: Functions to extract info from mouse events.
f1c15283 706* Accessing Scroll:: Functions to get info from scroll bar events.
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707* Strings of Events:: Special considerations for putting
708 keyboard character events in a string.
709
710Reading Input
711
712* Key Sequence Input:: How to read one key sequence.
713* Reading One Event:: How to read just one event.
714* Event Mod:: How Emacs modifies events as they are read.
715* Invoking the Input Method:: How reading an event uses the input method.
716* Quoted Character Input:: Asking the user to specify a character.
717* Event Input Misc:: How to reread or throw away input events.
718
719Keymaps
720
721* Key Sequences:: Key sequences as Lisp objects.
722* Keymap Basics:: Basic concepts of keymaps.
723* Format of Keymaps:: What a keymap looks like as a Lisp object.
724* Creating Keymaps:: Functions to create and copy keymaps.
725* Inheritance and Keymaps:: How one keymap can inherit the bindings
726 of another keymap.
727* Prefix Keys:: Defining a key with a keymap as its definition.
728* Active Keymaps:: How Emacs searches the active keymaps
729 for a key binding.
730* Searching Keymaps:: A pseudo-Lisp summary of searching active maps.
731* Controlling Active Maps:: Each buffer has a local keymap
732 to override the standard (global) bindings.
733 A minor mode can also override them.
561c0216 734* Key Lookup:: Finding a key's binding in one keymap.
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735* Functions for Key Lookup:: How to request key lookup.
736* Changing Key Bindings:: Redefining a key in a keymap.
737* Remapping Commands:: A keymap can translate one command to another.
738* Translation Keymaps:: Keymaps for translating sequences of events.
739* Key Binding Commands:: Interactive interfaces for redefining keys.
740* Scanning Keymaps:: Looking through all keymaps, for printing help.
561c0216 741* Menu Keymaps:: Defining a menu as a keymap.
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742
743Menu Keymaps
744
745* Defining Menus:: How to make a keymap that defines a menu.
746* Mouse Menus:: How users actuate the menu with the mouse.
747* Keyboard Menus:: How users actuate the menu with the keyboard.
748* Menu Example:: Making a simple menu.
749* Menu Bar:: How to customize the menu bar.
750* Tool Bar:: A tool bar is a row of images.
751* Modifying Menus:: How to add new items to a menu.
752
753Defining Menus
754
755* Simple Menu Items:: A simple kind of menu key binding,
756 limited in capabilities.
757* Extended Menu Items:: More powerful menu item definitions
758 let you specify keywords to enable
759 various features.
760* Menu Separators:: Drawing a horizontal line through a menu.
761* Alias Menu Items:: Using command aliases in menu items.
762
763Major and Minor Modes
764
765* Hooks:: How to use hooks; how to write code that provides hooks.
766* Major Modes:: Defining major modes.
767* Minor Modes:: Defining minor modes.
768* Mode Line Format:: Customizing the text that appears in the mode line.
769* Imenu:: How a mode can provide a menu
770 of definitions in the buffer.
771* Font Lock Mode:: How modes can highlight text according to syntax.
772* Desktop Save Mode:: How modes can have buffer state saved between
773 Emacs sessions.
774
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775Hooks
776
777* Running Hooks:: How to run a hook.
778* Setting Hooks:: How to put functions on a hook, or remove them.
779
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780Major Modes
781
782* Major Mode Basics::
783* Major Mode Conventions:: Coding conventions for keymaps, etc.
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784* Auto Major Mode:: How Emacs chooses the major mode automatically.
785* Mode Help:: Finding out how to use a mode.
786* Derived Modes:: Defining a new major mode based on another major
787 mode.
788* Generic Modes:: Defining a simple major mode that supports
789 comment syntax and Font Lock mode.
790* Mode Hooks:: Hooks run at the end of major mode functions.
561c0216 791* Example Major Modes:: Text mode and Lisp modes.
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792
793Minor Modes
794
795* Minor Mode Conventions:: Tips for writing a minor mode.
796* Keymaps and Minor Modes:: How a minor mode can have its own keymap.
797* Defining Minor Modes:: A convenient facility for defining minor modes.
798
799Mode Line Format
800
561c0216 801* Mode Line Basics:: Basic ideas of mode line control.
b8d4c8d0 802* Mode Line Data:: The data structure that controls the mode line.
561c0216 803* Mode Line Top:: The top level variable, mode-line-format.
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804* Mode Line Variables:: Variables used in that data structure.
805* %-Constructs:: Putting information into a mode line.
806* Properties in Mode:: Using text properties in the mode line.
807* Header Lines:: Like a mode line, but at the top.
808* Emulating Mode Line:: Formatting text as the mode line would.
809
810Font Lock Mode
811
812* Font Lock Basics:: Overview of customizing Font Lock.
813* Search-based Fontification:: Fontification based on regexps.
814* Customizing Keywords:: Customizing search-based fontification.
815* Other Font Lock Variables:: Additional customization facilities.
816* Levels of Font Lock:: Each mode can define alternative levels
817 so that the user can select more or less.
818* Precalculated Fontification:: How Lisp programs that produce the buffer
819 contents can also specify how to fontify it.
820* Faces for Font Lock:: Special faces specifically for Font Lock.
821* Syntactic Font Lock:: Fontification based on syntax tables.
822* Setting Syntax Properties:: Defining character syntax based on context
823 using the Font Lock mechanism.
824* Multiline Font Lock:: How to coerce Font Lock into properly
825 highlighting multiline constructs.
826
827Multiline Font Lock Constructs
828
561c0216 829* Font Lock Multiline:: Marking multiline chunks with a text property.
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830* Region to Fontify:: Controlling which region gets refontified
831 after a buffer change.
832
833Documentation
834
835* Documentation Basics:: Good style for doc strings.
836 Where to put them. How Emacs stores them.
837* Accessing Documentation:: How Lisp programs can access doc strings.
838* Keys in Documentation:: Substituting current key bindings.
839* Describing Characters:: Making printable descriptions of
840 non-printing characters and key sequences.
841* Help Functions:: Subroutines used by Emacs help facilities.
842
843Files
844
845* Visiting Files:: Reading files into Emacs buffers for editing.
846* Saving Buffers:: Writing changed buffers back into files.
561c0216 847* Reading from Files:: Reading files into buffers without visiting.
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848* Writing to Files:: Writing new files from parts of buffers.
849* File Locks:: Locking and unlocking files, to prevent
850 simultaneous editing by two people.
851* Information about Files:: Testing existence, accessibility, size of files.
852* Changing Files:: Renaming files, changing protection, etc.
853* File Names:: Decomposing and expanding file names.
854* Contents of Directories:: Getting a list of the files in a directory.
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855* Create/Delete Dirs:: Creating and Deleting Directories.
856* Magic File Names:: Defining "magic" special handling
857 for certain file names.
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858* Format Conversion:: Conversion to and from various file formats.
859
860Visiting Files
861
862* Visiting Functions:: The usual interface functions for visiting.
863* Subroutines of Visiting:: Lower-level subroutines that they use.
864
865Information about Files
866
867* Testing Accessibility:: Is a given file readable? Writable?
868* Kinds of Files:: Is it a directory? A symbolic link?
d24880de 869* Truenames:: Eliminating symbolic links from a file name.
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870* File Attributes:: How large is it? Any other names? Etc.
871* Locating Files:: How to find a file in standard places.
872
873File Names
874
875* File Name Components:: The directory part of a file name, and the rest.
561c0216 876* Relative File Names:: Some file names are relative to a current directory.
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877* Directory Names:: A directory's name as a directory
878 is different from its name as a file.
879* File Name Expansion:: Converting relative file names to absolute ones.
880* Unique File Names:: Generating names for temporary files.
881* File Name Completion:: Finding the completions for a given file name.
882* Standard File Names:: If your package uses a fixed file name,
883 how to handle various operating systems simply.
884
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885File Format Conversion
886
121e43fd 887* Format Conversion Overview:: @code{insert-file-contents} and @code{write-region}.
561c0216
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888* Format Conversion Round-Trip:: Using @code{format-alist}.
889* Format Conversion Piecemeal:: Specifying non-paired conversion.
890
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891Backups and Auto-Saving
892
893* Backup Files:: How backup files are made; how their names
894 are chosen.
895* Auto-Saving:: How auto-save files are made; how their
896 names are chosen.
897* Reverting:: @code{revert-buffer}, and how to customize
898 what it does.
899
900Backup Files
901
902* Making Backups:: How Emacs makes backup files, and when.
903* Rename or Copy:: Two alternatives: renaming the old file
904 or copying it.
905* Numbered Backups:: Keeping multiple backups for each source file.
906* Backup Names:: How backup file names are computed; customization.
907
908Buffers
909
910* Buffer Basics:: What is a buffer?
911* Current Buffer:: Designating a buffer as current
561c0216 912 so that primitives will access its contents.
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913* Buffer Names:: Accessing and changing buffer names.
914* Buffer File Name:: The buffer file name indicates which file
915 is visited.
916* Buffer Modification:: A buffer is @dfn{modified} if it needs to be saved.
917* Modification Time:: Determining whether the visited file was changed
918 ``behind Emacs's back''.
919* Read Only Buffers:: Modifying text is not allowed in a
920 read-only buffer.
921* The Buffer List:: How to look at all the existing buffers.
922* Creating Buffers:: Functions that create buffers.
923* Killing Buffers:: Buffers exist until explicitly killed.
924* Indirect Buffers:: An indirect buffer shares text with some
925 other buffer.
acc8b598 926* Swapping Text:: Swapping text between two buffers.
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927* Buffer Gap:: The gap in the buffer.
928
929Windows
930
931* Basic Windows:: Basic information on using windows.
932* Splitting Windows:: Splitting one window into two windows.
933* Deleting Windows:: Deleting a window gives its space to other windows.
934* Selecting Windows:: The selected window is the one that you edit in.
935* Cyclic Window Ordering:: Moving around the existing windows.
936* Buffers and Windows:: Each window displays the contents of a buffer.
937* Displaying Buffers:: Higher-level functions for displaying a buffer
938 and choosing a window for it.
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939* Choosing Window:: How to choose a window for displaying a buffer.
940* Dedicated Windows:: How to avoid displaying another buffer in
efafc282 941 a specific window.
b8d4c8d0 942* Window Point:: Each window has its own location of point.
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943* Window Start and End:: Buffer positions indicating which text is
944 on-screen in a window.
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945* Textual Scrolling:: Moving text up and down through the window.
946* Vertical Scrolling:: Moving the contents up and down on the window.
947* Horizontal Scrolling:: Moving the contents sideways on the window.
948* Size of Window:: Accessing the size of a window.
949* Resizing Windows:: Changing the size of a window.
950* Coordinates and Windows:: Converting coordinates to windows.
951* Window Tree:: The layout and sizes of all windows in a frame.
952* Window Configurations:: Saving and restoring the state of the screen.
efafc282 953* Window Parameters:: Associating additional information with windows.
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954* Window Hooks:: Hooks for scrolling, window size changes,
955 redisplay going past a certain point,
956 or window configuration changes.
957
958Frames
959
d24880de 960* Creating Frames:: Creating additional frames.
3ec61d4e 961* Multiple Terminals:: Displaying on several different devices.
d24880de 962* Frame Parameters:: Controlling frame size, position, font, etc.
df05a163 963* Terminal Parameters:: Parameters common for all frames on terminal.
b8d4c8d0 964* Frame Titles:: Automatic updating of frame titles.
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965* Deleting Frames:: Frames last until explicitly deleted.
966* Finding All Frames:: How to examine all existing frames.
967* Frames and Windows:: A frame contains windows;
968 display of text always works through windows.
b8d4c8d0 969* Minibuffers and Frames:: How a frame finds the minibuffer to use.
d24880de 970* Input Focus:: Specifying the selected frame.
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971* Visibility of Frames:: Frames may be visible or invisible, or icons.
972* Raising and Lowering:: Raising a frame makes it hide other windows;
d24880de 973 lowering it makes the others hide it.
b8d4c8d0 974* Frame Configurations:: Saving the state of all frames.
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975* Mouse Tracking:: Getting events that say when the mouse moves.
976* Mouse Position:: Asking where the mouse is, or moving it.
977* Pop-Up Menus:: Displaying a menu for the user to select from.
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978* Dialog Boxes:: Displaying a box to ask yes or no.
979* Pointer Shape:: Specifying the shape of the mouse pointer.
561c0216 980* Window System Selections::Transferring text to and from other X clients.
b8d4c8d0 981* Drag and Drop:: Internals of Drag-and-Drop implementation.
d24880de 982* Color Names:: Getting the definitions of color names.
b8d4c8d0 983* Text Terminal Colors:: Defining colors for text-only terminals.
d24880de 984* Resources:: Getting resource values from the server.
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985* Display Feature Testing:: Determining the features of a terminal.
986
987Frame Parameters
988
989* Parameter Access:: How to change a frame's parameters.
d24880de 990* Initial Parameters:: Specifying frame parameters when you make a frame.
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991* Window Frame Parameters:: List of frame parameters for window systems.
992* Size and Position:: Changing the size and position of a frame.
993* Geometry:: Parsing geometry specifications.
994
995Window Frame Parameters
996
997* Basic Parameters:: Parameters that are fundamental.
998* Position Parameters:: The position of the frame on the screen.
999* Size Parameters:: Frame's size.
1000* Layout Parameters:: Size of parts of the frame, and
1001 enabling or disabling some parts.
1002* Buffer Parameters:: Which buffers have been or should be shown.
1003* Management Parameters:: Communicating with the window manager.
1004* Cursor Parameters:: Controlling the cursor appearance.
561c0216 1005* Font and Color Parameters:: Fonts and colors for the frame text.
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1006
1007Positions
1008
1009* Point:: The special position where editing takes place.
1010* Motion:: Changing point.
1011* Excursions:: Temporary motion and buffer changes.
1012* Narrowing:: Restricting editing to a portion of the buffer.
1013
1014Motion
1015
1016* Character Motion:: Moving in terms of characters.
1017* Word Motion:: Moving in terms of words.
1018* Buffer End Motion:: Moving to the beginning or end of the buffer.
1019* Text Lines:: Moving in terms of lines of text.
1020* Screen Lines:: Moving in terms of lines as displayed.
1021* List Motion:: Moving by parsing lists and sexps.
1022* Skipping Characters:: Skipping characters belonging to a certain set.
1023
1024Markers
1025
1026* Overview of Markers:: The components of a marker, and how it relocates.
1027* Predicates on Markers:: Testing whether an object is a marker.
1028* Creating Markers:: Making empty markers or markers at certain places.
561c0216 1029* Information from Markers::Finding the marker's buffer or character position.
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1030* Marker Insertion Types:: Two ways a marker can relocate when you
1031 insert where it points.
1032* Moving Markers:: Moving the marker to a new buffer or position.
1033* The Mark:: How "the mark" is implemented with a marker.
1034* The Region:: How to access "the region".
1035
1036Text
1037
1038* Near Point:: Examining text in the vicinity of point.
1039* Buffer Contents:: Examining text in a general fashion.
1040* Comparing Text:: Comparing substrings of buffers.
1041* Insertion:: Adding new text to a buffer.
1042* Commands for Insertion:: User-level commands to insert text.
1043* Deletion:: Removing text from a buffer.
1044* User-Level Deletion:: User-level commands to delete text.
1045* The Kill Ring:: Where removed text sometimes is saved for
1046 later use.
1047* Undo:: Undoing changes to the text of a buffer.
1048* Maintaining Undo:: How to enable and disable undo information.
d24880de 1049 How to control how much information is kept.
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1050* Filling:: Functions for explicit filling.
1051* Margins:: How to specify margins for filling commands.
1052* Adaptive Fill:: Adaptive Fill mode chooses a fill prefix
1053 from context.
1054* Auto Filling:: How auto-fill mode is implemented to break lines.
1055* Sorting:: Functions for sorting parts of the buffer.
1056* Columns:: Computing horizontal positions, and using them.
1057* Indentation:: Functions to insert or adjust indentation.
1058* Case Changes:: Case conversion of parts of the buffer.
1059* Text Properties:: Assigning Lisp property lists to text characters.
1060* Substitution:: Replacing a given character wherever it appears.
1061* Transposition:: Swapping two portions of a buffer.
1062* Registers:: How registers are implemented. Accessing
1063 the text or position stored in a register.
1064* Base 64:: Conversion to or from base 64 encoding.
1065* MD5 Checksum:: Compute the MD5 "message digest"/"checksum".
1066* Atomic Changes:: Installing several buffer changes "atomically".
1067* Change Hooks:: Supplying functions to be run when text is changed.
1068
1069The Kill Ring
1070
1071* Kill Ring Concepts:: What text looks like in the kill ring.
1072* Kill Functions:: Functions that kill text.
1073* Yanking:: How yanking is done.
1074* Yank Commands:: Commands that access the kill ring.
d24880de 1075* Low-Level Kill Ring:: Functions and variables for kill ring access.
561c0216 1076* Internals of Kill Ring:: Variables that hold kill ring data.
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1077
1078Indentation
1079
1080* Primitive Indent:: Functions used to count and insert indentation.
1081* Mode-Specific Indent:: Customize indentation for different modes.
1082* Region Indent:: Indent all the lines in a region.
1083* Relative Indent:: Indent the current line based on previous lines.
1084* Indent Tabs:: Adjustable, typewriter-like tab stops.
1085* Motion by Indent:: Move to first non-blank character.
1086
1087Text Properties
1088
1089* Examining Properties:: Looking at the properties of one character.
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1090* Changing Properties:: Setting the properties of a range of text.
1091* Property Search:: Searching for where a property changes value.
1092* Special Properties:: Particular properties with special meanings.
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1093* Format Properties:: Properties for representing formatting of text.
1094* Sticky Properties:: How inserted text gets properties from
1095 neighboring text.
1096* Lazy Properties:: Computing text properties in a lazy fashion
1097 only when text is examined.
1098* Clickable Text:: Using text properties to make regions of text
1099 do something when you click on them.
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1100* Fields:: The @code{field} property defines
1101 fields within the buffer.
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1102* Not Intervals:: Why text properties do not use
1103 Lisp-visible text intervals.
b8d4c8d0 1104
561c0216 1105Non-@acronym{ASCII} Characters
b8d4c8d0 1106
561c0216 1107* Text Representations:: How Emacs represents text.
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1108* Converting Representations:: Converting unibyte to multibyte and vice versa.
1109* Selecting a Representation:: Treating a byte sequence as unibyte or multi.
1110* Character Codes:: How unibyte and multibyte relate to
1111 codes of individual characters.
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1112* Character Properties:: Character attributes that define their
1113 behavior and handling.
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1114* Character Sets:: The space of possible character codes
1115 is divided into various character sets.
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1116* Scanning Charsets:: Which character sets are used in a buffer?
1117* Translation of Characters:: Translation tables are used for conversion.
1118* Coding Systems:: Coding systems are conversions for saving files.
1119* Input Methods:: Input methods allow users to enter various
1120 non-ASCII characters without special keyboards.
1121* Locales:: Interacting with the POSIX locale.
1122
1123Coding Systems
1124
1125* Coding System Basics:: Basic concepts.
1126* Encoding and I/O:: How file I/O functions handle coding systems.
1127* Lisp and Coding Systems:: Functions to operate on coding system names.
1128* User-Chosen Coding Systems:: Asking the user to choose a coding system.
1129* Default Coding Systems:: Controlling the default choices.
1130* Specifying Coding Systems:: Requesting a particular coding system
1131 for a single file operation.
1132* Explicit Encoding:: Encoding or decoding text without doing I/O.
1133* Terminal I/O Encoding:: Use of encoding for terminal I/O.
1134* MS-DOS File Types:: How DOS "text" and "binary" files
1135 relate to coding systems.
1136
1137Searching and Matching
1138
1139* String Search:: Search for an exact match.
1140* Searching and Case:: Case-independent or case-significant searching.
1141* Regular Expressions:: Describing classes of strings.
1142* Regexp Search:: Searching for a match for a regexp.
1143* POSIX Regexps:: Searching POSIX-style for the longest match.
1144* Match Data:: Finding out which part of the text matched,
1145 after a string or regexp search.
d24880de 1146* Search and Replace:: Commands that loop, searching and replacing.
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1147* Standard Regexps:: Useful regexps for finding sentences, pages,...
1148
1149Regular Expressions
1150
1151* Syntax of Regexps:: Rules for writing regular expressions.
1152* Regexp Example:: Illustrates regular expression syntax.
1153* Regexp Functions:: Functions for operating on regular expressions.
1154
1155Syntax of Regular Expressions
1156
1157* Regexp Special:: Special characters in regular expressions.
1158* Char Classes:: Character classes used in regular expressions.
1159* Regexp Backslash:: Backslash-sequences in regular expressions.
1160
1161The Match Data
1162
d24880de 1163* Replacing Match:: Replacing a substring that was matched.
b8d4c8d0 1164* Simple Match Data:: Accessing single items of match data,
d24880de 1165 such as where a particular subexpression started.
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1166* Entire Match Data:: Accessing the entire match data at once, as a list.
1167* Saving Match Data:: Saving and restoring the match data.
1168
1169Syntax Tables
1170
1171* Syntax Basics:: Basic concepts of syntax tables.
1172* Syntax Descriptors:: How characters are classified.
1173* Syntax Table Functions:: How to create, examine and alter syntax tables.
1174* Syntax Properties:: Overriding syntax with text properties.
d24880de 1175* Motion and Syntax:: Moving over characters with certain syntaxes.
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1176* Parsing Expressions:: Parsing balanced expressions
1177 using the syntax table.
1178* Standard Syntax Tables:: Syntax tables used by various major modes.
1179* Syntax Table Internals:: How syntax table information is stored.
1180* Categories:: Another way of classifying character syntax.
1181
1182Syntax Descriptors
1183
1184* Syntax Class Table:: Table of syntax classes.
1185* Syntax Flags:: Additional flags each character can have.
1186
1187Parsing Expressions
1188
1189* Motion via Parsing:: Motion functions that work by parsing.
1190* Position Parse:: Determining the syntactic state of a position.
1191* Parser State:: How Emacs represents a syntactic state.
1192* Low-Level Parsing:: Parsing across a specified region.
1193* Control Parsing:: Parameters that affect parsing.
1194
561c0216 1195Abbrevs and Abbrev Expansion
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1196
1197* Abbrev Mode:: Setting up Emacs for abbreviation.
1198* Abbrev Tables:: Creating and working with abbrev tables.
1199* Defining Abbrevs:: Specifying abbreviations and their expansions.
1200* Abbrev Files:: Saving abbrevs in files.
1201* Abbrev Expansion:: Controlling expansion; expansion subroutines.
1202* Standard Abbrev Tables:: Abbrev tables used by various major modes.
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1203* Abbrev Properties:: How to read and set abbrev properties.
1204 Which properties have which effect.
1205* Abbrev Table Properties:: How to read and set abbrev table properties.
1206 Which properties have which effect.
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1207
1208Processes
1209
1210* Subprocess Creation:: Functions that start subprocesses.
1211* Shell Arguments:: Quoting an argument to pass it to a shell.
1212* Synchronous Processes:: Details of using synchronous subprocesses.
1213* Asynchronous Processes:: Starting up an asynchronous subprocess.
1214* Deleting Processes:: Eliminating an asynchronous subprocess.
1215* Process Information:: Accessing run-status and other attributes.
1216* Input to Processes:: Sending input to an asynchronous subprocess.
1217* Signals to Processes:: Stopping, continuing or interrupting
1218 an asynchronous subprocess.
1219* Output from Processes:: Collecting output from an asynchronous subprocess.
1220* Sentinels:: Sentinels run when process run-status changes.
1221* Query Before Exit:: Whether to query if exiting will kill a process.
a65f6a85 1222* System Processes:: Accessing other processes running on your system.
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1223* Transaction Queues:: Transaction-based communication with subprocesses.
1224* Network:: Opening network connections.
1225* Network Servers:: Network servers let Emacs accept net connections.
1226* Datagrams:: UDP network connections.
1227* Low-Level Network:: Lower-level but more general function
1228 to create connections and servers.
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1229* Misc Network:: Additional relevant functions for
1230 network connections.
c73e02fa 1231* Serial Ports:: Communicating with serial ports.
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1232* Byte Packing:: Using bindat to pack and unpack binary data.
1233
1234Receiving Output from Processes
1235
1236* Process Buffers:: If no filter, output is put in a buffer.
1237* Filter Functions:: Filter functions accept output from the process.
1238* Decoding Output:: Filters can get unibyte or multibyte strings.
1239* Accepting Output:: How to wait until process output arrives.
1240
1241Low-Level Network Access
1242
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1243* Network Processes:: Using @code{make-network-process}.
1244* Network Options:: Further control over network connections.
1245* Network Feature Testing:: Determining which network features work on
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1246 the machine you are using.
1247
1248Packing and Unpacking Byte Arrays
1249
1250* Bindat Spec:: Describing data layout.
1251* Bindat Functions:: Doing the unpacking and packing.
1252* Bindat Examples:: Samples of what bindat.el can do for you!
1253
1254Emacs Display
1255
1256* Refresh Screen:: Clearing the screen and redrawing everything on it.
1257* Forcing Redisplay:: Forcing redisplay.
1258* Truncation:: Folding or wrapping long text lines.
1259* The Echo Area:: Displaying messages at the bottom of the screen.
1260* Warnings:: Displaying warning messages for the user.
1261* Invisible Text:: Hiding part of the buffer text.
1262* Selective Display:: Hiding part of the buffer text (the old way).
1263* Temporary Displays:: Displays that go away automatically.
d24880de 1264* Overlays:: Use overlays to highlight parts of the buffer.
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1265* Width:: How wide a character or string is on the screen.
1266* Line Height:: Controlling the height of lines.
d24880de 1267* Faces:: A face defines a graphics style
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1268 for text characters: font, colors, etc.
1269* Fringes:: Controlling window fringes.
1270* Scroll Bars:: Controlling vertical scroll bars.
1271* Display Property:: Enabling special display features.
1272* Images:: Displaying images in Emacs buffers.
1273* Buttons:: Adding clickable buttons to Emacs buffers.
1274* Abstract Display:: Emacs' Widget for Object Collections.
1275* Blinking:: How Emacs shows the matching open parenthesis.
d24880de 1276* Usual Display:: The usual conventions for displaying
561c0216 1277 nonprinting chars.
d24880de 1278* Display Tables:: How to specify other conventions.
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1279* Beeping:: Audible signal to the user.
1280* Window Systems:: Which window system is being used.
1281
1282The Echo Area
1283
1284* Displaying Messages:: Explicitly displaying text in the echo area.
1285* Progress:: Informing user about progress of a long operation.
1286* Logging Messages:: Echo area messages are logged for the user.
1287* Echo Area Customization:: Controlling the echo area.
1288
1289Reporting Warnings
1290
1291* Warning Basics:: Warnings concepts and functions to report them.
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1292* Warning Variables:: Variables programs bind to customize
1293 their warnings.
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1294* Warning Options:: Variables users set to control display of warnings.
1295
1296Overlays
1297
1298* Managing Overlays:: Creating and moving overlays.
1299* Overlay Properties:: How to read and set properties.
d24880de 1300 What properties do to the screen display.
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1301* Finding Overlays:: Searching for overlays.
1302
1303Faces
1304
1305* Defining Faces:: How to define a face with @code{defface}.
1306* Face Attributes:: What is in a face?
1307* Attribute Functions:: Functions to examine and set face attributes.
1308* Displaying Faces:: How Emacs combines the faces specified for
1309 a character.
606061b9 1310* Face Remapping:: Remapping faces to alternative definitions.
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1311* Face Functions:: How to define and examine faces.
1312* Auto Faces:: Hook for automatic face assignment.
606061b9 1313* Font Selection:: Finding the best available font for a face.
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1314* Font Lookup:: Looking up the names of available fonts
1315 and information about them.
1316* Fontsets:: A fontset is a collection of fonts
1317 that handle a range of character sets.
561c0216 1318* Low-Level Font:: Lisp representation for character display fonts.
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1319
1320Fringes
1321
1322* Fringe Size/Pos:: Specifying where to put the window fringes.
1323* Fringe Indicators:: Displaying indicator icons in the window fringes.
1324* Fringe Cursors:: Displaying cursors in the right fringe.
1325* Fringe Bitmaps:: Specifying bitmaps for fringe indicators.
1326* Customizing Bitmaps:: Specifying your own bitmaps to use in the fringes.
1327* Overlay Arrow:: Display of an arrow to indicate position.
1328
1329The @code{display} Property
1330
561c0216 1331* Replacing Specs:: Display specs that replace the text.
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1332* Specified Space:: Displaying one space with a specified width.
1333* Pixel Specification:: Specifying space width or height in pixels.
1334* Other Display Specs:: Displaying an image; magnifying text; moving it
1335 up or down on the page; adjusting the width
1336 of spaces within text.
1337* Display Margins:: Displaying text or images to the side of
1338 the main text.
1339
1340Images
1341
561c0216 1342* Image Formats:: Supported image formats.
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1343* Image Descriptors:: How to specify an image for use in @code{:display}.
1344* XBM Images:: Special features for XBM format.
1345* XPM Images:: Special features for XPM format.
1346* GIF Images:: Special features for GIF format.
561c0216 1347* TIFF Images:: Special features for TIFF format.
2833b3ff 1348* PostScript Images:: Special features for PostScript format.
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1349* Other Image Types:: Various other formats are supported.
1350* Defining Images:: Convenient ways to define an image for later use.
1351* Showing Images:: Convenient ways to display an image once
1352 it is defined.
1353* Image Cache:: Internal mechanisms of image display.
1354
1355Buttons
1356
1357* Button Properties:: Button properties with special meanings.
1358* Button Types:: Defining common properties for classes of buttons.
1359* Making Buttons:: Adding buttons to Emacs buffers.
1360* Manipulating Buttons:: Getting and setting properties of buttons.
1361* Button Buffer Commands:: Buffer-wide commands and bindings for buttons.
1362
1363Abstract Display
1364
1365* Abstract Display Functions:: Functions in the Ewoc package.
1366* Abstract Display Example:: Example of using Ewoc.
1367
1368Display Tables
1369
1370* Display Table Format:: What a display table consists of.
1371* Active Display Table:: How Emacs selects a display table to use.
1372* Glyphs:: How to define a glyph, and what glyphs mean.
1373
1374Operating System Interface
1375
561c0216 1376* Starting Up:: Customizing Emacs startup processing.
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1377* Getting Out:: How exiting works (permanent or temporary).
1378* System Environment:: Distinguish the name and kind of system.
1379* User Identification:: Finding the name and user id of the user.
d24880de 1380* Time of Day:: Getting the current time.
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1381* Time Conversion:: Converting a time from numeric form to
1382 calendrical data and vice versa.
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1383* Time Parsing:: Converting a time from numeric form to text
1384 and vice versa.
1385* Processor Run Time:: Getting the run time used by Emacs.
1386* Time Calculations:: Adding, subtracting, comparing times, etc.
d24880de 1387* Timers:: Setting a timer to call a function at a
561c0216 1388 certain time.
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1389* Idle Timers:: Setting a timer to call a function when Emacs has
1390 been idle for a certain length of time.
1391* Terminal Input:: Accessing and recording terminal input.
1392* Terminal Output:: Controlling and recording terminal output.
1393* Sound Output:: Playing sounds on the computer's speaker.
121e43fd 1394* X11 Keysyms:: Operating on key symbols for X Windows.
b8d4c8d0 1395* Batch Mode:: Running Emacs without terminal interaction.
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1396* Session Management:: Saving and restoring state with
1397 X Session Management.
b8d4c8d0 1398
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1399Preparing Lisp code for distribution
1400
1401* Packaging Basics:: The basic concepts of Emacs Lisp packages.
1402* Simple Packages:: How to package a single .el file.
1403* Multi-file Packages:: How to package multiple files.
1404
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1405Starting Up Emacs
1406
561c0216
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1407* Startup Summary:: Sequence of actions Emacs performs at startup.
1408* Init File:: Details on reading the init file.
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1409* Terminal-Specific:: How the terminal-specific Lisp file is read.
1410* Command-Line Arguments:: How command-line arguments are processed,
1411 and how you can customize them.
1412
1413Getting Out of Emacs
1414
1415* Killing Emacs:: Exiting Emacs irreversibly.
1416* Suspending Emacs:: Exiting Emacs reversibly.
1417
1418Terminal Input
1419
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1420* Input Modes:: Options for how input is processed.
1421* Recording Input:: Saving histories of recent or all input events.
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1422
1423Tips and Conventions
1424
1425* Coding Conventions:: Conventions for clean and robust programs.
1426* Key Binding Conventions:: Which keys should be bound by which programs.
1427* Programming Tips:: Making Emacs code fit smoothly in Emacs.
1428* Compilation Tips:: Making compiled code run fast.
1429* Warning Tips:: Turning off compiler warnings.
1430* Documentation Tips:: Writing readable documentation strings.
d24880de 1431* Comment Tips:: Conventions for writing comments.
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1432* Library Headers:: Standard headers for library packages.
1433
1434GNU Emacs Internals
1435
1436* Building Emacs:: How the dumped Emacs is made.
1437* Pure Storage:: A kludge to make preloaded Lisp functions sharable.
1438* Garbage Collection:: Reclaiming space for Lisp objects no longer used.
1439* Memory Usage:: Info about total size of Lisp objects made so far.
1440* Writing Emacs Primitives:: Writing C code for Emacs.
1441* Object Internals:: Data formats of buffers, windows, processes.
1442
1443Object Internals
1444
1445* Buffer Internals:: Components of a buffer structure.
1446* Window Internals:: Components of a window structure.
1447* Process Internals:: Components of a process structure.
1448@end detailmenu
1449@end menu
1450
1451@include intro.texi
1452@include objects.texi
1453@include numbers.texi
1454@include strings.texi
1455
1456@include lists.texi
1457@include sequences.texi
1458@include hash.texi
1459@include symbols.texi
1460@include eval.texi
1461
1462@include control.texi
1463@include variables.texi
1464@include functions.texi
1465@include macros.texi
1466
1467@include customize.texi
1468@include loading.texi
1469@include compile.texi
1470@include advice.texi
1471
561c0216 1472@c This includes edebug.texi.
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1473@include debugging.texi
1474@include streams.texi
1475@include minibuf.texi
1476@include commands.texi
1477
1478@include keymaps.texi
1479@include modes.texi
1480@include help.texi
1481@include files.texi
1482
1483@include backups.texi
1484@include buffers.texi
1485@include windows.texi
1486@include frames.texi
1487
1488@include positions.texi
1489@include markers.texi
1490@include text.texi
1491@include nonascii.texi
1492
1493@include searching.texi
1494@include syntax.texi
1495@include abbrevs.texi
1496@include processes.texi
1497
1498@include display.texi
1499@include os.texi
1500
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1501@include package.texi
1502
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1503@c MOVE to Emacs Manual: include misc-modes.texi
1504
1505@c appendices
1506
1507@c REMOVE this: include non-hacker.texi
1508
1509@include anti.texi
1510@include doclicense.texi
1511@include gpl.texi
1512@include tips.texi
1513@include internals.texi
1514@include errors.texi
1515@include locals.texi
1516@include maps.texi
1517@include hooks.texi
1518
1519@include index.texi
1520
1521@ignore
1522@node New Symbols, , Index, Top
1523@unnumbered New Symbols Since the Previous Edition
1524
1525@printindex tp
1526@end ignore
1527
1528@bye
1529
1530\f
1531These words prevent "local variables" above from confusing Emacs.