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[bpt/emacs.git] / doc / lispref / elisp.texi
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1\input texinfo @c -*-texinfo-*-
2@c %**start of header
3@setfilename elisp
4@settitle GNU Emacs Lisp Reference Manual
5@c %**end of header
6
7@c Version of the manual and of Emacs.
8@c Please remember to update the edition number in README as well.
f751a2ae 9@c And also the copies in vol1.texi and vol2.texi.
3a6aa965 10@set VERSION 3.0
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
73b0cd50 47Copyright @copyright{} 1990-1996, 1998-2011 Free Software
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48Foundation, Inc.
49
50@quotation
51Permission is granted to copy, distribute and/or modify this document
204d4665 52under the terms of the GNU Free Documentation License, Version 1.3 or
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53any later version published by the Free Software Foundation; with the
54Invariant Sections being ``GNU General Public License,'' with the
55Front-Cover texts being ``A GNU Manual,'' and with the Back-Cover
56Texts as in (a) below. A copy of the license is included in the
57section entitled ``GNU Free Documentation License.''
58
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59(a) The FSF's Back-Cover Text is: ``You have the freedom to copy and
60modify this GNU manual. Buying copies from the FSF supports it in
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61developing GNU and promoting software freedom.''
62@end quotation
63@end copying
64
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65@dircategory Emacs
66@direntry
67* Elisp: (elisp). The Emacs Lisp Reference Manual.
68@end direntry
69
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70@titlepage
71@title GNU Emacs Lisp Reference Manual
72@subtitle For Emacs Version @value{EMACSVER}
f751a2ae 73@subtitle Revision @value{VERSION}, @value{DATE}
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74
75@author by Bil Lewis, Dan LaLiberte, Richard Stallman
76@author and the GNU Manual Group
77@page
78@vskip 0pt plus 1filll
79@insertcopying
80
81@sp 2
82Published by the Free Software Foundation @*
8351 Franklin St, Fifth Floor @*
84Boston, MA 02110-1301 @*
85USA @*
86ISBN 1-882114-74-4
87
88@sp 2
89Cover art by Etienne Suvasa.
90@end titlepage
91
92
93@c Print the tables of contents
94@summarycontents
95@contents
96
97
98@ifnottex
99@node Top, Introduction, (dir), (dir)
100@top Emacs Lisp
101
5300838c 102@insertcopying
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103@end ifnottex
104
f751a2ae 105@c Copy any updates to vol1.texi and vol2.texi.
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106@menu
107* Introduction:: Introduction and conventions used.
108
109* Lisp Data Types:: Data types of objects in Emacs Lisp.
110* Numbers:: Numbers and arithmetic functions.
111* Strings and Characters:: Strings, and functions that work on them.
112* Lists:: Lists, cons cells, and related functions.
113* Sequences Arrays Vectors:: Lists, strings and vectors are called sequences.
114 Certain functions act on any kind of sequence.
115 The description of vectors is here as well.
116* Hash Tables:: Very fast lookup-tables.
117* Symbols:: Symbols represent names, uniquely.
118
119* Evaluation:: How Lisp expressions are evaluated.
120* Control Structures:: Conditionals, loops, nonlocal exits.
121* Variables:: Using symbols in programs to stand for values.
122* Functions:: A function is a Lisp program
123 that can be invoked from other functions.
124* Macros:: Macros are a way to extend the Lisp language.
125* Customization:: Writing customization declarations.
126
127* Loading:: Reading files of Lisp code into Lisp.
128* Byte Compilation:: Compilation makes programs run faster.
129* Advising Functions:: Adding to the definition of a function.
130* Debugging:: Tools and tips for debugging Lisp programs.
131
132* Read and Print:: Converting Lisp objects to text and back.
133* Minibuffers:: Using the minibuffer to read input.
134* Command Loop:: How the editor command loop works,
135 and how you can call its subroutines.
136* Keymaps:: Defining the bindings from keys to commands.
137* Modes:: Defining major and minor modes.
138* Documentation:: Writing and using documentation strings.
139
140* Files:: Accessing files.
141* Backups and Auto-Saving:: Controlling how backups and auto-save
142 files are made.
143* Buffers:: Creating and using buffer objects.
144* Windows:: Manipulating windows and displaying buffers.
d24880de 145* Frames:: Making multiple system-level windows.
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146* Positions:: Buffer positions and motion functions.
147* Markers:: Markers represent positions and update
148 automatically when the text is changed.
149
150* Text:: Examining and changing text in buffers.
151* Non-ASCII Characters:: Non-ASCII text in buffers and strings.
152* Searching and Matching:: Searching buffers for strings or regexps.
153* Syntax Tables:: The syntax table controls word and list parsing.
154* Abbrevs:: How Abbrev mode works, and its data structures.
155
156* Processes:: Running and communicating with subprocesses.
d24880de 157* Display:: Features for controlling the screen display.
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158* System Interface:: Getting the user id, system type, environment
159 variables, and other such things.
160
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161* Packaging:: Preparing Lisp code for distribution.
162
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163Appendices
164
f751a2ae 165* Antinews:: Info for users downgrading to Emacs 22.
561c0216 166* GNU Free Documentation License:: The license for this documentation.
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167* GPL:: Conditions for copying and changing GNU Emacs.
168* Tips:: Advice and coding conventions for Emacs Lisp.
169* GNU Emacs Internals:: Building and dumping Emacs;
170 internal data structures.
171* Standard Errors:: List of all error symbols.
172* Standard Buffer-Local Variables::
173 List of variables buffer-local in all buffers.
174* Standard Keymaps:: List of standard keymaps.
175* Standard Hooks:: List of standard hook variables.
176
177* Index:: Index including concepts, functions, variables,
178 and other terms.
179
180@ignore
181* New Symbols:: New functions and variables in Emacs @value{EMACSVER}.
182@end ignore
183
184@c Do NOT modify the following 3 lines! They must have this form to
185@c be correctly identified by `texinfo-multiple-files-update'. In
186@c particular, the detailed menu header line MUST be identical to the
187@c value of `texinfo-master-menu-header'. See texnfo-upd.el.
f751a2ae 188@c Copy any updates to vol1.texi and vol2.texi.
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189
190@detailmenu
191 --- The Detailed Node Listing ---
192 ---------------------------------
193
194Here are other nodes that are inferiors of those already listed,
195mentioned here so you can get to them in one step:
196
197Introduction
198
199* Caveats:: Flaws and a request for help.
200* Lisp History:: Emacs Lisp is descended from Maclisp.
201* Conventions:: How the manual is formatted.
202* Version Info:: Which Emacs version is running?
203* Acknowledgements:: The authors, editors, and sponsors of this manual.
204
205Conventions
206
207* Some Terms:: Explanation of terms we use in this manual.
208* nil and t:: How the symbols @code{nil} and @code{t} are used.
209* Evaluation Notation:: The format we use for examples of evaluation.
561c0216 210* Printing Notation:: The format we use when examples print text.
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211* Error Messages:: The format we use for examples of errors.
212* Buffer Text Notation:: The format we use for buffer contents in examples.
213* Format of Descriptions:: Notation for describing functions, variables, etc.
214
215Format of Descriptions
216
217* A Sample Function Description:: A description of an imaginary
218 function, @code{foo}.
219* A Sample Variable Description:: A description of an imaginary
220 variable, @code{electric-future-map}.
221
222Lisp Data Types
223
224* Printed Representation:: How Lisp objects are represented as text.
225* Comments:: Comments and their formatting conventions.
226* Programming Types:: Types found in all Lisp systems.
227* Editing Types:: Types specific to Emacs.
121e43fd 228* Circular Objects:: Read syntax for circular structure.
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229* Type Predicates:: Tests related to types.
230* Equality Predicates:: Tests of equality between any two objects.
231
232Programming Types
233
234* Integer Type:: Numbers without fractional parts.
235* Floating Point Type:: Numbers with fractional parts and with a large range.
236* Character Type:: The representation of letters, numbers and
237 control characters.
238* Symbol Type:: A multi-use object that refers to a function,
561c0216 239 variable, or property list, and has a unique identity.
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240* Sequence Type:: Both lists and arrays are classified as sequences.
241* Cons Cell Type:: Cons cells, and lists (which are made from cons cells).
242* Array Type:: Arrays include strings and vectors.
243* String Type:: An (efficient) array of characters.
244* Vector Type:: One-dimensional arrays.
245* Char-Table Type:: One-dimensional sparse arrays indexed by characters.
246* Bool-Vector Type:: One-dimensional arrays of @code{t} or @code{nil}.
247* Hash Table Type:: Super-fast lookup tables.
248* Function Type:: A piece of executable code you can call from elsewhere.
249* Macro Type:: A method of expanding an expression into another
250 expression, more fundamental but less pretty.
251* Primitive Function Type:: A function written in C, callable from Lisp.
252* Byte-Code Type:: A function written in Lisp, then compiled.
253* Autoload Type:: A type used for automatically loading seldom-used
254 functions.
255
256Character Type
257
258* Basic Char Syntax:: Syntax for regular characters.
259* General Escape Syntax:: How to specify characters by their codes.
260* Ctl-Char Syntax:: Syntax for control characters.
261* Meta-Char Syntax:: Syntax for meta-characters.
262* Other Char Bits:: Syntax for hyper-, super-, and alt-characters.
263
264Cons Cell and List Types
265
266* Box Diagrams:: Drawing pictures of lists.
561c0216 267* Dotted Pair Notation:: A general syntax for cons cells.
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268* Association List Type:: A specially constructed list.
269
270String Type
271
272* Syntax for Strings:: How to specify Lisp strings.
273* Non-ASCII in Strings:: International characters in strings.
274* Nonprinting Characters:: Literal unprintable characters in strings.
275* Text Props and Strings:: Strings with text properties.
276
277Editing Types
278
279* Buffer Type:: The basic object of editing.
280* Marker Type:: A position in a buffer.
561c0216 281* Window Type:: Buffers are displayed in windows.
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282* Frame Type:: Windows subdivide frames.
283* Terminal Type:: A terminal device displays frames.
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284* Window Configuration Type:: Recording the way a frame is subdivided.
285* Frame Configuration Type:: Recording the status of all frames.
a65f6a85 286* Process Type:: A subprocess of Emacs running on the underlying OS.
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287* Stream Type:: Receive or send characters.
288* Keymap Type:: What function a keystroke invokes.
289* Overlay Type:: How an overlay is represented.
3a6aa965 290* Font Type:: Fonts for displaying text.
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291
292Numbers
293
294* Integer Basics:: Representation and range of integers.
d24880de 295* Float Basics:: Representation and range of floating point.
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296* Predicates on Numbers:: Testing for numbers.
297* Comparison of Numbers:: Equality and inequality predicates.
d24880de 298* Numeric Conversions:: Converting float to integer and vice versa.
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299* Arithmetic Operations:: How to add, subtract, multiply and divide.
300* Rounding Operations:: Explicitly rounding floating point numbers.
301* Bitwise Operations:: Logical and, or, not, shifting.
302* Math Functions:: Trig, exponential and logarithmic functions.
303* Random Numbers:: Obtaining random integers, predictable or not.
304
305Strings and Characters
306
307* String Basics:: Basic properties of strings and characters.
308* Predicates for Strings:: Testing whether an object is a string or char.
309* Creating Strings:: Functions to allocate new strings.
121e43fd 310* Modifying Strings:: Altering the contents of an existing string.
b8d4c8d0 311* Text Comparison:: Comparing characters or strings.
561c0216 312* String Conversion:: Converting to and from characters and strings.
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313* Formatting Strings:: @code{format}: Emacs's analogue of @code{printf}.
314* Case Conversion:: Case conversion functions.
d24880de 315* Case Tables:: Customizing case conversion.
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316
317Lists
318
319* Cons Cells:: How lists are made out of cons cells.
320* List-related Predicates:: Is this object a list? Comparing two lists.
321* List Elements:: Extracting the pieces of a list.
322* Building Lists:: Creating list structure.
323* List Variables:: Modifying lists stored in variables.
324* Modifying Lists:: Storing new pieces into an existing list.
325* Sets And Lists:: A list can represent a finite mathematical set.
326* Association Lists:: A list can represent a finite relation or mapping.
327* Rings:: Managing a fixed-size ring of objects.
328
329Modifying Existing List Structure
330
331* Setcar:: Replacing an element in a list.
332* Setcdr:: Replacing part of the list backbone.
333 This can be used to remove or add elements.
334* Rearrangement:: Reordering the elements in a list; combining lists.
335
336Sequences, Arrays, and Vectors
337
338* Sequence Functions:: Functions that accept any kind of sequence.
339* Arrays:: Characteristics of arrays in Emacs Lisp.
340* Array Functions:: Functions specifically for arrays.
341* Vectors:: Special characteristics of Emacs Lisp vectors.
342* Vector Functions:: Functions specifically for vectors.
343* Char-Tables:: How to work with char-tables.
344* Bool-Vectors:: How to work with bool-vectors.
345
346Hash Tables
347
348* Creating Hash:: Functions to create hash tables.
349* Hash Access:: Reading and writing the hash table contents.
561c0216 350* Defining Hash:: Defining new comparison methods.
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351* Other Hash:: Miscellaneous.
352
353Symbols
354
355* Symbol Components:: Symbols have names, values, function definitions
356 and property lists.
357* Definitions:: A definition says how a symbol will be used.
358* Creating Symbols:: How symbols are kept unique.
359* Property Lists:: Each symbol has a property list
360 for recording miscellaneous information.
361
362Property Lists
363
364* Plists and Alists:: Comparison of the advantages of property
365 lists and association lists.
366* Symbol Plists:: Functions to access symbols' property lists.
367* Other Plists:: Accessing property lists stored elsewhere.
368
369Evaluation
370
371* Intro Eval:: Evaluation in the scheme of things.
372* Forms:: How various sorts of objects are evaluated.
373* Quoting:: Avoiding evaluation (to put constants in
374 the program).
375* Eval:: How to invoke the Lisp interpreter explicitly.
376
377Kinds of Forms
378
379* Self-Evaluating Forms:: Forms that evaluate to themselves.
380* Symbol Forms:: Symbols evaluate as variables.
381* Classifying Lists:: How to distinguish various sorts of list forms.
382* Function Indirection:: When a symbol appears as the car of a list,
d24880de 383 we find the real function via the symbol.
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384* Function Forms:: Forms that call functions.
385* Macro Forms:: Forms that call macros.
386* Special Forms:: "Special forms" are idiosyncratic primitives,
387 most of them extremely important.
388* Autoloading:: Functions set up to load files
389 containing their real definitions.
390
391Control Structures
392
393* Sequencing:: Evaluation in textual order.
394* Conditionals:: @code{if}, @code{cond}, @code{when}, @code{unless}.
395* Combining Conditions:: @code{and}, @code{or}, @code{not}.
396* Iteration:: @code{while} loops.
397* Nonlocal Exits:: Jumping out of a sequence.
398
399Nonlocal Exits
400
401* Catch and Throw:: Nonlocal exits for the program's own purposes.
402* Examples of Catch:: Showing how such nonlocal exits can be written.
403* Errors:: How errors are signaled and handled.
404* Cleanups:: Arranging to run a cleanup form if an
405 error happens.
406
407Errors
408
409* Signaling Errors:: How to report an error.
410* Processing of Errors:: What Emacs does when you report an error.
411* Handling Errors:: How you can trap errors and continue execution.
412* Error Symbols:: How errors are classified for trapping them.
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413
414Variables
415
416* Global Variables:: Variable values that exist permanently, everywhere.
417* Constant Variables:: Certain "variables" have values that never change.
418* Local Variables:: Variable values that exist only temporarily.
419* Void Variables:: Symbols that lack values.
420* Defining Variables:: A definition says a symbol is used as a variable.
421* Tips for Defining:: Things you should think about when you
422 define a variable.
423* Accessing Variables:: Examining values of variables whose names
424 are known only at run time.
425* Setting Variables:: Storing new values in variables.
426* Variable Scoping:: How Lisp chooses among local and global values.
427* Buffer-Local Variables:: Variable values in effect only in one buffer.
b8d4c8d0 428* File Local Variables:: Handling local variable lists in files.
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429* Directory Local Variables:: Local variables common to all files in a
430 directory.
eaf4b689 431* Frame-Local Variables:: Frame-local bindings for variables.
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432* Variable Aliases:: Variables that are aliases for other variables.
433* Variables with Restricted Values:: Non-constant variables whose value can
434 @emph{not} be an arbitrary Lisp object.
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435
436Scoping Rules for Variable Bindings
437
438* Scope:: Scope means where in the program a value
439 is visible. Comparison with other languages.
440* Extent:: Extent means how long in time a value exists.
441* Impl of Scope:: Two ways to implement dynamic scoping.
442* Using Scoping:: How to use dynamic scoping carefully and
443 avoid problems.
444
445Buffer-Local Variables
446
447* Intro to Buffer-Local:: Introduction and concepts.
448* Creating Buffer-Local:: Creating and destroying buffer-local bindings.
449* Default Value:: The default value is seen in buffers
450 that don't have their own buffer-local values.
451
452Functions
453
561c0216 454* What Is a Function:: Lisp functions vs. primitives; terminology.
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455* Lambda Expressions:: How functions are expressed as Lisp objects.
456* Function Names:: A symbol can serve as the name of a function.
457* Defining Functions:: Lisp expressions for defining functions.
458* Calling Functions:: How to use an existing function.
459* Mapping Functions:: Applying a function to each element of a list, etc.
561c0216 460* Anonymous Functions:: Lambda expressions are functions with no names.
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461* Function Cells:: Accessing or setting the function definition
462 of a symbol.
463* Obsolete Functions:: Declaring functions obsolete.
d24880de 464* Inline Functions:: Defining functions that the compiler
561c0216 465 will open code.
d24880de 466* Declaring Functions:: Telling the compiler that a function is defined.
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467* Function Safety:: Determining whether a function is safe to call.
468* Related Topics:: Cross-references to specific Lisp primitives
469 that have a special bearing on how
470 functions work.
471
472Lambda Expressions
473
474* Lambda Components:: The parts of a lambda expression.
475* Simple Lambda:: A simple example.
476* Argument List:: Details and special features of argument lists.
477* Function Documentation:: How to put documentation in a function.
478
479Macros
480
481* Simple Macro:: A basic example.
482* Expansion:: How, when and why macros are expanded.
483* Compiling Macros:: How macros are expanded by the compiler.
484* Defining Macros:: How to write a macro definition.
485* Backquote:: Easier construction of list structure.
486* Problems with Macros:: Don't evaluate the macro arguments too many times.
487 Don't hide the user's variables.
488* Indenting Macros:: Specifying how to indent macro calls.
489
490Common Problems Using Macros
491
492* Wrong Time:: Do the work in the expansion, not in the macro.
493* Argument Evaluation:: The expansion should evaluate each macro arg once.
494* Surprising Local Vars:: Local variable bindings in the expansion
495 require special care.
496* Eval During Expansion:: Don't evaluate them; put them in the expansion.
497* Repeated Expansion:: Avoid depending on how many times expansion is done.
498
499Writing Customization Definitions
500
501* Common Keywords:: Common keyword arguments for all kinds of
502 customization declarations.
503* Group Definitions:: Writing customization group definitions.
504* Variable Definitions:: Declaring user options.
505* Customization Types:: Specifying the type of a user option.
506
507Customization Types
508
509* Simple Types:: Simple customization types: sexp, integer, number,
510 string, file, directory, alist.
511* Composite Types:: Build new types from other types or data.
512* Splicing into Lists:: Splice elements into list with @code{:inline}.
513* Type Keywords:: Keyword-argument pairs in a customization type.
514* Defining New Types:: Give your type a name.
515
516Loading
517
518* How Programs Do Loading:: The @code{load} function and others.
519* Load Suffixes:: Details about the suffixes that @code{load} tries.
520* Library Search:: Finding a library to load.
521* Loading Non-ASCII:: Non-@acronym{ASCII} characters in Emacs Lisp files.
522* Autoload:: Setting up a function to autoload.
523* Repeated Loading:: Precautions about loading a file twice.
524* Named Features:: Loading a library if it isn't already loaded.
525* Where Defined:: Finding which file defined a certain symbol.
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526* Unloading:: How to "unload" a library that was loaded.
527* Hooks for Loading:: Providing code to be run when
528 particular libraries are loaded.
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529
530Byte Compilation
531
532* Speed of Byte-Code:: An example of speedup from byte compilation.
533* Compilation Functions:: Byte compilation functions.
534* Docs and Compilation:: Dynamic loading of documentation strings.
535* Dynamic Loading:: Dynamic loading of individual functions.
536* Eval During Compile:: Code to be evaluated when you compile.
537* Compiler Errors:: Handling compiler error messages.
d24880de 538* Byte-Code Objects:: The data type used for byte-compiled functions.
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539* Disassembly:: Disassembling byte-code; how to read byte-code.
540
541Advising Emacs Lisp Functions
542
543* Simple Advice:: A simple example to explain the basics of advice.
544* Defining Advice:: Detailed description of @code{defadvice}.
545* Around-Advice:: Wrapping advice around a function's definition.
546* Computed Advice:: ...is to @code{defadvice} as @code{fset} is to @code{defun}.
547* Activation of Advice:: Advice doesn't do anything until you activate it.
548* Enabling Advice:: You can enable or disable each piece of advice.
549* Preactivation:: Preactivation is a way of speeding up the
550 loading of compiled advice.
551* Argument Access in Advice:: How advice can access the function's arguments.
552* Advising Primitives:: Accessing arguments when advising a primitive.
553* Combined Definition:: How advice is implemented.
554
555Debugging Lisp Programs
556
557* Debugger:: How the Emacs Lisp debugger is implemented.
558* Edebug:: A source-level Emacs Lisp debugger.
559* Syntax Errors:: How to find syntax errors.
560* Test Coverage:: Ensuring you have tested all branches in your code.
561* Compilation Errors:: How to find errors that show up in
562 byte compilation.
563
564The Lisp Debugger
565
566* Error Debugging:: Entering the debugger when an error happens.
d24880de 567* Infinite Loops:: Stopping and debugging a program that doesn't exit.
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568* Function Debugging:: Entering it when a certain function is called.
569* Explicit Debug:: Entering it at a certain point in the program.
570* Using Debugger:: What the debugger does; what you see while in it.
571* Debugger Commands:: Commands used while in the debugger.
572* Invoking the Debugger:: How to call the function @code{debug}.
573* Internals of Debugger:: Subroutines of the debugger, and global variables.
574
575Edebug
576
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577* Using Edebug:: Introduction to use of Edebug.
578* Instrumenting:: You must instrument your code
579 in order to debug it with Edebug.
b8d4c8d0 580* Edebug Execution Modes:: Execution modes, stopping more or less often.
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581* Jumping:: Commands to jump to a specified place.
582* Edebug Misc:: Miscellaneous commands.
583* Breaks:: Setting breakpoints to make the program stop.
584* Trapping Errors:: Trapping errors with Edebug.
585* Edebug Views:: Views inside and outside of Edebug.
586* Edebug Eval:: Evaluating expressions within Edebug.
587* Eval List:: Expressions whose values are displayed
588 each time you enter Edebug.
589* Printing in Edebug:: Customization of printing.
590* Trace Buffer:: How to produce trace output in a buffer.
591* Coverage Testing:: How to test evaluation coverage.
592* The Outside Context:: Data that Edebug saves and restores.
b8d4c8d0 593* Edebug and Macros:: Specifying how to handle macro calls.
d24880de 594* Edebug Options:: Option variables for customizing Edebug.
b8d4c8d0 595
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596Breaks
597
598* Breakpoints:: Breakpoints at stop points.
599* Global Break Condition:: Breaking on an event.
600* Source Breakpoints:: Embedding breakpoints in source code.
601
602The Outside Context
603
604* Checking Whether to Stop::When Edebug decides what to do.
605* Edebug Display Update:: When Edebug updates the display.
606* Edebug Recursive Edit:: When Edebug stops execution.
607
608Edebug and Macros
609
610* Instrumenting Macro Calls::The basic problem.
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611* Specification List:: How to specify complex patterns of evaluation.
612* Backtracking:: What Edebug does when matching fails.
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613* Specification Examples:: To help understand specifications.
614
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615Debugging Invalid Lisp Syntax
616
617* Excess Open:: How to find a spurious open paren or missing close.
618* Excess Close:: How to find a spurious close paren or missing open.
619
620Reading and Printing Lisp Objects
621
622* Streams Intro:: Overview of streams, reading and printing.
623* Input Streams:: Various data types that can be used as
624 input streams.
625* Input Functions:: Functions to read Lisp objects from text.
626* Output Streams:: Various data types that can be used as
627 output streams.
628* Output Functions:: Functions to print Lisp objects as text.
629* Output Variables:: Variables that control what the printing
630 functions do.
631
632Minibuffers
633
634* Intro to Minibuffers:: Basic information about minibuffers.
635* Text from Minibuffer:: How to read a straight text string.
636* Object from Minibuffer:: How to read a Lisp object or expression.
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637* Minibuffer History:: Recording previous minibuffer inputs
638 so the user can reuse them.
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639* Initial Input:: Specifying initial contents for the minibuffer.
640* Completion:: How to invoke and customize completion.
641* Yes-or-No Queries:: Asking a question with a simple answer.
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642* Multiple Queries:: Asking a series of similar questions.
643* Reading a Password:: Reading a password from the terminal.
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644* Minibuffer Commands:: Commands used as key bindings in minibuffers.
645* Minibuffer Contents:: How such commands access the minibuffer text.
646* Minibuffer Windows:: Operating on the special minibuffer windows.
647* Recursive Mini:: Whether recursive entry to minibuffer is allowed.
648* Minibuffer Misc:: Various customization hooks and variables.
649
650Completion
651
652* Basic Completion:: Low-level functions for completing strings.
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653* Minibuffer Completion:: Invoking the minibuffer with completion.
654* Completion Commands:: Minibuffer commands that do completion.
655* High-Level Completion:: Convenient special cases of completion
121e43fd 656 (reading buffer name, file name, etc.).
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657* Reading File Names:: Using completion to read file names and
658 shell commands.
745c5f7b 659* Completion Styles:: Specifying rules for performing completion.
561c0216 660* Programmed Completion:: Writing your own completion-function.
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661
662Command Loop
663
664* Command Overview:: How the command loop reads commands.
665* Defining Commands:: Specifying how a function should read arguments.
666* Interactive Call:: Calling a command, so that it will read arguments.
61bbdbc6 667* Distinguish Interactive:: Making a command distinguish interactive calls.
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668* Command Loop Info:: Variables set by the command loop for you to examine.
669* Adjusting Point:: Adjustment of point after a command.
d24880de 670* Input Events:: What input looks like when you read it.
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671* Reading Input:: How to read input events from the keyboard or mouse.
672* Special Events:: Events processed immediately and individually.
673* Waiting:: Waiting for user input or elapsed time.
674* Quitting:: How @kbd{C-g} works. How to catch or defer quitting.
675* Prefix Command Arguments:: How the commands to set prefix args work.
676* Recursive Editing:: Entering a recursive edit,
677 and why you usually shouldn't.
678* Disabling Commands:: How the command loop handles disabled commands.
679* Command History:: How the command history is set up, and how accessed.
680* Keyboard Macros:: How keyboard macros are implemented.
681
682Defining Commands
683
684* Using Interactive:: General rules for @code{interactive}.
685* Interactive Codes:: The standard letter-codes for reading arguments
686 in various ways.
687* Interactive Examples:: Examples of how to read interactive arguments.
688
689Input Events
690
691* Keyboard Events:: Ordinary characters--keys with symbols on them.
692* Function Keys:: Function keys--keys with names, not symbols.
693* Mouse Events:: Overview of mouse events.
694* Click Events:: Pushing and releasing a mouse button.
695* Drag Events:: Moving the mouse before releasing the button.
696* Button-Down Events:: A button was pushed and not yet released.
697* Repeat Events:: Double and triple click (or drag, or down).
698* Motion Events:: Just moving the mouse, not pushing a button.
699* Focus Events:: Moving the mouse between frames.
700* Misc Events:: Other events the system can generate.
701* Event Examples:: Examples of the lists for mouse events.
702* Classifying Events:: Finding the modifier keys in an event symbol.
561c0216 703 Event types.
d24880de 704* Accessing Mouse:: Functions to extract info from mouse events.
f1c15283 705* Accessing Scroll:: Functions to get info from scroll bar events.
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706* Strings of Events:: Special considerations for putting
707 keyboard character events in a string.
708
709Reading Input
710
711* Key Sequence Input:: How to read one key sequence.
712* Reading One Event:: How to read just one event.
713* Event Mod:: How Emacs modifies events as they are read.
714* Invoking the Input Method:: How reading an event uses the input method.
715* Quoted Character Input:: Asking the user to specify a character.
716* Event Input Misc:: How to reread or throw away input events.
717
718Keymaps
719
720* Key Sequences:: Key sequences as Lisp objects.
721* Keymap Basics:: Basic concepts of keymaps.
722* Format of Keymaps:: What a keymap looks like as a Lisp object.
723* Creating Keymaps:: Functions to create and copy keymaps.
724* Inheritance and Keymaps:: How one keymap can inherit the bindings
725 of another keymap.
726* Prefix Keys:: Defining a key with a keymap as its definition.
727* Active Keymaps:: How Emacs searches the active keymaps
728 for a key binding.
729* Searching Keymaps:: A pseudo-Lisp summary of searching active maps.
730* Controlling Active Maps:: Each buffer has a local keymap
731 to override the standard (global) bindings.
732 A minor mode can also override them.
561c0216 733* Key Lookup:: Finding a key's binding in one keymap.
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734* Functions for Key Lookup:: How to request key lookup.
735* Changing Key Bindings:: Redefining a key in a keymap.
736* Remapping Commands:: A keymap can translate one command to another.
737* Translation Keymaps:: Keymaps for translating sequences of events.
738* Key Binding Commands:: Interactive interfaces for redefining keys.
739* Scanning Keymaps:: Looking through all keymaps, for printing help.
561c0216 740* Menu Keymaps:: Defining a menu as a keymap.
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741
742Menu Keymaps
743
744* Defining Menus:: How to make a keymap that defines a menu.
745* Mouse Menus:: How users actuate the menu with the mouse.
746* Keyboard Menus:: How users actuate the menu with the keyboard.
747* Menu Example:: Making a simple menu.
748* Menu Bar:: How to customize the menu bar.
749* Tool Bar:: A tool bar is a row of images.
750* Modifying Menus:: How to add new items to a menu.
751
752Defining Menus
753
754* Simple Menu Items:: A simple kind of menu key binding,
755 limited in capabilities.
756* Extended Menu Items:: More powerful menu item definitions
757 let you specify keywords to enable
758 various features.
759* Menu Separators:: Drawing a horizontal line through a menu.
760* Alias Menu Items:: Using command aliases in menu items.
761
762Major and Minor Modes
763
764* Hooks:: How to use hooks; how to write code that provides hooks.
765* Major Modes:: Defining major modes.
766* Minor Modes:: Defining minor modes.
767* Mode Line Format:: Customizing the text that appears in the mode line.
768* Imenu:: How a mode can provide a menu
769 of definitions in the buffer.
770* Font Lock Mode:: How modes can highlight text according to syntax.
771* Desktop Save Mode:: How modes can have buffer state saved between
772 Emacs sessions.
773
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774Hooks
775
776* Running Hooks:: How to run a hook.
777* Setting Hooks:: How to put functions on a hook, or remove them.
778
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779Major Modes
780
781* Major Mode Basics::
782* Major Mode Conventions:: Coding conventions for keymaps, etc.
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783* Auto Major Mode:: How Emacs chooses the major mode automatically.
784* Mode Help:: Finding out how to use a mode.
785* Derived Modes:: Defining a new major mode based on another major
786 mode.
787* Generic Modes:: Defining a simple major mode that supports
788 comment syntax and Font Lock mode.
789* Mode Hooks:: Hooks run at the end of major mode functions.
561c0216 790* Example Major Modes:: Text mode and Lisp modes.
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791
792Minor Modes
793
794* Minor Mode Conventions:: Tips for writing a minor mode.
795* Keymaps and Minor Modes:: How a minor mode can have its own keymap.
796* Defining Minor Modes:: A convenient facility for defining minor modes.
797
798Mode Line Format
799
561c0216 800* Mode Line Basics:: Basic ideas of mode line control.
b8d4c8d0 801* Mode Line Data:: The data structure that controls the mode line.
561c0216 802* Mode Line Top:: The top level variable, mode-line-format.
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803* Mode Line Variables:: Variables used in that data structure.
804* %-Constructs:: Putting information into a mode line.
805* Properties in Mode:: Using text properties in the mode line.
806* Header Lines:: Like a mode line, but at the top.
807* Emulating Mode Line:: Formatting text as the mode line would.
808
809Font Lock Mode
810
811* Font Lock Basics:: Overview of customizing Font Lock.
812* Search-based Fontification:: Fontification based on regexps.
813* Customizing Keywords:: Customizing search-based fontification.
814* Other Font Lock Variables:: Additional customization facilities.
815* Levels of Font Lock:: Each mode can define alternative levels
816 so that the user can select more or less.
817* Precalculated Fontification:: How Lisp programs that produce the buffer
818 contents can also specify how to fontify it.
819* Faces for Font Lock:: Special faces specifically for Font Lock.
820* Syntactic Font Lock:: Fontification based on syntax tables.
821* Setting Syntax Properties:: Defining character syntax based on context
822 using the Font Lock mechanism.
823* Multiline Font Lock:: How to coerce Font Lock into properly
824 highlighting multiline constructs.
825
826Multiline Font Lock Constructs
827
561c0216 828* Font Lock Multiline:: Marking multiline chunks with a text property.
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829* Region to Fontify:: Controlling which region gets refontified
830 after a buffer change.
831
832Documentation
833
834* Documentation Basics:: Good style for doc strings.
835 Where to put them. How Emacs stores them.
836* Accessing Documentation:: How Lisp programs can access doc strings.
837* Keys in Documentation:: Substituting current key bindings.
838* Describing Characters:: Making printable descriptions of
839 non-printing characters and key sequences.
840* Help Functions:: Subroutines used by Emacs help facilities.
841
842Files
843
844* Visiting Files:: Reading files into Emacs buffers for editing.
845* Saving Buffers:: Writing changed buffers back into files.
561c0216 846* Reading from Files:: Reading files into buffers without visiting.
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847* Writing to Files:: Writing new files from parts of buffers.
848* File Locks:: Locking and unlocking files, to prevent
849 simultaneous editing by two people.
850* Information about Files:: Testing existence, accessibility, size of files.
851* Changing Files:: Renaming files, changing protection, etc.
852* File Names:: Decomposing and expanding file names.
853* Contents of Directories:: Getting a list of the files in a directory.
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854* Create/Delete Dirs:: Creating and Deleting Directories.
855* Magic File Names:: Defining "magic" special handling
856 for certain file names.
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857* Format Conversion:: Conversion to and from various file formats.
858
859Visiting Files
860
861* Visiting Functions:: The usual interface functions for visiting.
862* Subroutines of Visiting:: Lower-level subroutines that they use.
863
864Information about Files
865
866* Testing Accessibility:: Is a given file readable? Writable?
867* Kinds of Files:: Is it a directory? A symbolic link?
d24880de 868* Truenames:: Eliminating symbolic links from a file name.
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869* File Attributes:: How large is it? Any other names? Etc.
870* Locating Files:: How to find a file in standard places.
871
872File Names
873
874* File Name Components:: The directory part of a file name, and the rest.
561c0216 875* Relative File Names:: Some file names are relative to a current directory.
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876* Directory Names:: A directory's name as a directory
877 is different from its name as a file.
878* File Name Expansion:: Converting relative file names to absolute ones.
879* Unique File Names:: Generating names for temporary files.
880* File Name Completion:: Finding the completions for a given file name.
881* Standard File Names:: If your package uses a fixed file name,
882 how to handle various operating systems simply.
883
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884File Format Conversion
885
121e43fd 886* Format Conversion Overview:: @code{insert-file-contents} and @code{write-region}.
561c0216
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887* Format Conversion Round-Trip:: Using @code{format-alist}.
888* Format Conversion Piecemeal:: Specifying non-paired conversion.
889
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890Backups and Auto-Saving
891
892* Backup Files:: How backup files are made; how their names
893 are chosen.
894* Auto-Saving:: How auto-save files are made; how their
895 names are chosen.
896* Reverting:: @code{revert-buffer}, and how to customize
897 what it does.
898
899Backup Files
900
901* Making Backups:: How Emacs makes backup files, and when.
902* Rename or Copy:: Two alternatives: renaming the old file
903 or copying it.
904* Numbered Backups:: Keeping multiple backups for each source file.
905* Backup Names:: How backup file names are computed; customization.
906
907Buffers
908
909* Buffer Basics:: What is a buffer?
910* Current Buffer:: Designating a buffer as current
561c0216 911 so that primitives will access its contents.
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912* Buffer Names:: Accessing and changing buffer names.
913* Buffer File Name:: The buffer file name indicates which file
914 is visited.
915* Buffer Modification:: A buffer is @dfn{modified} if it needs to be saved.
916* Modification Time:: Determining whether the visited file was changed
917 ``behind Emacs's back''.
918* Read Only Buffers:: Modifying text is not allowed in a
919 read-only buffer.
920* The Buffer List:: How to look at all the existing buffers.
921* Creating Buffers:: Functions that create buffers.
922* Killing Buffers:: Buffers exist until explicitly killed.
923* Indirect Buffers:: An indirect buffer shares text with some
924 other buffer.
acc8b598 925* Swapping Text:: Swapping text between two buffers.
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926* Buffer Gap:: The gap in the buffer.
927
928Windows
929
930* Basic Windows:: Basic information on using windows.
931* Splitting Windows:: Splitting one window into two windows.
932* Deleting Windows:: Deleting a window gives its space to other windows.
933* Selecting Windows:: The selected window is the one that you edit in.
934* Cyclic Window Ordering:: Moving around the existing windows.
935* Buffers and Windows:: Each window displays the contents of a buffer.
936* Displaying Buffers:: Higher-level functions for displaying a buffer
937 and choosing a window for it.
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938* Choosing Window:: How to choose a window for displaying a buffer.
939* Dedicated Windows:: How to avoid displaying another buffer in
efafc282 940 a specific window.
b8d4c8d0 941* Window Point:: Each window has its own location of point.
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MR
942* Window Start and End:: Buffer positions indicating which text is
943 on-screen in a window.
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944* Textual Scrolling:: Moving text up and down through the window.
945* Vertical Scrolling:: Moving the contents up and down on the window.
946* Horizontal Scrolling:: Moving the contents sideways on the window.
947* Size of Window:: Accessing the size of a window.
948* Resizing Windows:: Changing the size of a window.
949* Coordinates and Windows:: Converting coordinates to windows.
950* Window Tree:: The layout and sizes of all windows in a frame.
951* Window Configurations:: Saving and restoring the state of the screen.
efafc282 952* Window Parameters:: Associating additional information with windows.
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953* Window Hooks:: Hooks for scrolling, window size changes,
954 redisplay going past a certain point,
955 or window configuration changes.
956
957Frames
958
d24880de 959* Creating Frames:: Creating additional frames.
3ec61d4e 960* Multiple Terminals:: Displaying on several different devices.
d24880de 961* Frame Parameters:: Controlling frame size, position, font, etc.
df05a163 962* Terminal Parameters:: Parameters common for all frames on terminal.
b8d4c8d0 963* Frame Titles:: Automatic updating of frame titles.
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964* Deleting Frames:: Frames last until explicitly deleted.
965* Finding All Frames:: How to examine all existing frames.
966* Frames and Windows:: A frame contains windows;
967 display of text always works through windows.
b8d4c8d0 968* Minibuffers and Frames:: How a frame finds the minibuffer to use.
d24880de 969* Input Focus:: Specifying the selected frame.
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970* Visibility of Frames:: Frames may be visible or invisible, or icons.
971* Raising and Lowering:: Raising a frame makes it hide other windows;
d24880de 972 lowering it makes the others hide it.
b8d4c8d0 973* Frame Configurations:: Saving the state of all frames.
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974* Mouse Tracking:: Getting events that say when the mouse moves.
975* Mouse Position:: Asking where the mouse is, or moving it.
976* Pop-Up Menus:: Displaying a menu for the user to select from.
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977* Dialog Boxes:: Displaying a box to ask yes or no.
978* Pointer Shape:: Specifying the shape of the mouse pointer.
561c0216 979* Window System Selections::Transferring text to and from other X clients.
b8d4c8d0 980* Drag and Drop:: Internals of Drag-and-Drop implementation.
d24880de 981* Color Names:: Getting the definitions of color names.
b8d4c8d0 982* Text Terminal Colors:: Defining colors for text-only terminals.
d24880de 983* Resources:: Getting resource values from the server.
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984* Display Feature Testing:: Determining the features of a terminal.
985
986Frame Parameters
987
988* Parameter Access:: How to change a frame's parameters.
d24880de 989* Initial Parameters:: Specifying frame parameters when you make a frame.
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990* Window Frame Parameters:: List of frame parameters for window systems.
991* Size and Position:: Changing the size and position of a frame.
992* Geometry:: Parsing geometry specifications.
993
994Window Frame Parameters
995
996* Basic Parameters:: Parameters that are fundamental.
997* Position Parameters:: The position of the frame on the screen.
998* Size Parameters:: Frame's size.
999* Layout Parameters:: Size of parts of the frame, and
1000 enabling or disabling some parts.
1001* Buffer Parameters:: Which buffers have been or should be shown.
1002* Management Parameters:: Communicating with the window manager.
1003* Cursor Parameters:: Controlling the cursor appearance.
561c0216 1004* Font and Color Parameters:: Fonts and colors for the frame text.
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1005
1006Positions
1007
1008* Point:: The special position where editing takes place.
1009* Motion:: Changing point.
1010* Excursions:: Temporary motion and buffer changes.
1011* Narrowing:: Restricting editing to a portion of the buffer.
1012
1013Motion
1014
1015* Character Motion:: Moving in terms of characters.
1016* Word Motion:: Moving in terms of words.
1017* Buffer End Motion:: Moving to the beginning or end of the buffer.
1018* Text Lines:: Moving in terms of lines of text.
1019* Screen Lines:: Moving in terms of lines as displayed.
1020* List Motion:: Moving by parsing lists and sexps.
1021* Skipping Characters:: Skipping characters belonging to a certain set.
1022
1023Markers
1024
1025* Overview of Markers:: The components of a marker, and how it relocates.
1026* Predicates on Markers:: Testing whether an object is a marker.
1027* Creating Markers:: Making empty markers or markers at certain places.
561c0216 1028* Information from Markers::Finding the marker's buffer or character position.
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1029* Marker Insertion Types:: Two ways a marker can relocate when you
1030 insert where it points.
1031* Moving Markers:: Moving the marker to a new buffer or position.
1032* The Mark:: How "the mark" is implemented with a marker.
1033* The Region:: How to access "the region".
1034
1035Text
1036
1037* Near Point:: Examining text in the vicinity of point.
1038* Buffer Contents:: Examining text in a general fashion.
1039* Comparing Text:: Comparing substrings of buffers.
1040* Insertion:: Adding new text to a buffer.
1041* Commands for Insertion:: User-level commands to insert text.
1042* Deletion:: Removing text from a buffer.
1043* User-Level Deletion:: User-level commands to delete text.
1044* The Kill Ring:: Where removed text sometimes is saved for
1045 later use.
1046* Undo:: Undoing changes to the text of a buffer.
1047* Maintaining Undo:: How to enable and disable undo information.
d24880de 1048 How to control how much information is kept.
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1049* Filling:: Functions for explicit filling.
1050* Margins:: How to specify margins for filling commands.
1051* Adaptive Fill:: Adaptive Fill mode chooses a fill prefix
1052 from context.
1053* Auto Filling:: How auto-fill mode is implemented to break lines.
1054* Sorting:: Functions for sorting parts of the buffer.
1055* Columns:: Computing horizontal positions, and using them.
1056* Indentation:: Functions to insert or adjust indentation.
1057* Case Changes:: Case conversion of parts of the buffer.
1058* Text Properties:: Assigning Lisp property lists to text characters.
1059* Substitution:: Replacing a given character wherever it appears.
1060* Transposition:: Swapping two portions of a buffer.
1061* Registers:: How registers are implemented. Accessing
1062 the text or position stored in a register.
1063* Base 64:: Conversion to or from base 64 encoding.
1064* MD5 Checksum:: Compute the MD5 "message digest"/"checksum".
1065* Atomic Changes:: Installing several buffer changes "atomically".
1066* Change Hooks:: Supplying functions to be run when text is changed.
1067
1068The Kill Ring
1069
1070* Kill Ring Concepts:: What text looks like in the kill ring.
1071* Kill Functions:: Functions that kill text.
1072* Yanking:: How yanking is done.
1073* Yank Commands:: Commands that access the kill ring.
d24880de 1074* Low-Level Kill Ring:: Functions and variables for kill ring access.
561c0216 1075* Internals of Kill Ring:: Variables that hold kill ring data.
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1076
1077Indentation
1078
1079* Primitive Indent:: Functions used to count and insert indentation.
1080* Mode-Specific Indent:: Customize indentation for different modes.
1081* Region Indent:: Indent all the lines in a region.
1082* Relative Indent:: Indent the current line based on previous lines.
1083* Indent Tabs:: Adjustable, typewriter-like tab stops.
1084* Motion by Indent:: Move to first non-blank character.
1085
1086Text Properties
1087
1088* Examining Properties:: Looking at the properties of one character.
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1089* Changing Properties:: Setting the properties of a range of text.
1090* Property Search:: Searching for where a property changes value.
1091* Special Properties:: Particular properties with special meanings.
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1092* Format Properties:: Properties for representing formatting of text.
1093* Sticky Properties:: How inserted text gets properties from
1094 neighboring text.
1095* Lazy Properties:: Computing text properties in a lazy fashion
1096 only when text is examined.
1097* Clickable Text:: Using text properties to make regions of text
1098 do something when you click on them.
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1099* Fields:: The @code{field} property defines
1100 fields within the buffer.
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1101* Not Intervals:: Why text properties do not use
1102 Lisp-visible text intervals.
b8d4c8d0 1103
561c0216 1104Non-@acronym{ASCII} Characters
b8d4c8d0 1105
561c0216 1106* Text Representations:: How Emacs represents text.
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1107* Converting Representations:: Converting unibyte to multibyte and vice versa.
1108* Selecting a Representation:: Treating a byte sequence as unibyte or multi.
1109* Character Codes:: How unibyte and multibyte relate to
1110 codes of individual characters.
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1111* Character Properties:: Character attributes that define their
1112 behavior and handling.
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1113* Character Sets:: The space of possible character codes
1114 is divided into various character sets.
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1115* Scanning Charsets:: Which character sets are used in a buffer?
1116* Translation of Characters:: Translation tables are used for conversion.
1117* Coding Systems:: Coding systems are conversions for saving files.
1118* Input Methods:: Input methods allow users to enter various
1119 non-ASCII characters without special keyboards.
1120* Locales:: Interacting with the POSIX locale.
1121
1122Coding Systems
1123
1124* Coding System Basics:: Basic concepts.
1125* Encoding and I/O:: How file I/O functions handle coding systems.
1126* Lisp and Coding Systems:: Functions to operate on coding system names.
1127* User-Chosen Coding Systems:: Asking the user to choose a coding system.
1128* Default Coding Systems:: Controlling the default choices.
1129* Specifying Coding Systems:: Requesting a particular coding system
1130 for a single file operation.
1131* Explicit Encoding:: Encoding or decoding text without doing I/O.
1132* Terminal I/O Encoding:: Use of encoding for terminal I/O.
1133* MS-DOS File Types:: How DOS "text" and "binary" files
1134 relate to coding systems.
1135
1136Searching and Matching
1137
1138* String Search:: Search for an exact match.
1139* Searching and Case:: Case-independent or case-significant searching.
1140* Regular Expressions:: Describing classes of strings.
1141* Regexp Search:: Searching for a match for a regexp.
1142* POSIX Regexps:: Searching POSIX-style for the longest match.
1143* Match Data:: Finding out which part of the text matched,
1144 after a string or regexp search.
d24880de 1145* Search and Replace:: Commands that loop, searching and replacing.
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1146* Standard Regexps:: Useful regexps for finding sentences, pages,...
1147
1148Regular Expressions
1149
1150* Syntax of Regexps:: Rules for writing regular expressions.
1151* Regexp Example:: Illustrates regular expression syntax.
1152* Regexp Functions:: Functions for operating on regular expressions.
1153
1154Syntax of Regular Expressions
1155
1156* Regexp Special:: Special characters in regular expressions.
1157* Char Classes:: Character classes used in regular expressions.
1158* Regexp Backslash:: Backslash-sequences in regular expressions.
1159
1160The Match Data
1161
d24880de 1162* Replacing Match:: Replacing a substring that was matched.
b8d4c8d0 1163* Simple Match Data:: Accessing single items of match data,
d24880de 1164 such as where a particular subexpression started.
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1165* Entire Match Data:: Accessing the entire match data at once, as a list.
1166* Saving Match Data:: Saving and restoring the match data.
1167
1168Syntax Tables
1169
1170* Syntax Basics:: Basic concepts of syntax tables.
1171* Syntax Descriptors:: How characters are classified.
1172* Syntax Table Functions:: How to create, examine and alter syntax tables.
1173* Syntax Properties:: Overriding syntax with text properties.
d24880de 1174* Motion and Syntax:: Moving over characters with certain syntaxes.
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1175* Parsing Expressions:: Parsing balanced expressions
1176 using the syntax table.
1177* Standard Syntax Tables:: Syntax tables used by various major modes.
1178* Syntax Table Internals:: How syntax table information is stored.
1179* Categories:: Another way of classifying character syntax.
1180
1181Syntax Descriptors
1182
1183* Syntax Class Table:: Table of syntax classes.
1184* Syntax Flags:: Additional flags each character can have.
1185
1186Parsing Expressions
1187
1188* Motion via Parsing:: Motion functions that work by parsing.
1189* Position Parse:: Determining the syntactic state of a position.
1190* Parser State:: How Emacs represents a syntactic state.
1191* Low-Level Parsing:: Parsing across a specified region.
1192* Control Parsing:: Parameters that affect parsing.
1193
561c0216 1194Abbrevs and Abbrev Expansion
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1195
1196* Abbrev Mode:: Setting up Emacs for abbreviation.
1197* Abbrev Tables:: Creating and working with abbrev tables.
1198* Defining Abbrevs:: Specifying abbreviations and their expansions.
1199* Abbrev Files:: Saving abbrevs in files.
1200* Abbrev Expansion:: Controlling expansion; expansion subroutines.
1201* Standard Abbrev Tables:: Abbrev tables used by various major modes.
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1202* Abbrev Properties:: How to read and set abbrev properties.
1203 Which properties have which effect.
1204* Abbrev Table Properties:: How to read and set abbrev table properties.
1205 Which properties have which effect.
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1206
1207Processes
1208
1209* Subprocess Creation:: Functions that start subprocesses.
1210* Shell Arguments:: Quoting an argument to pass it to a shell.
1211* Synchronous Processes:: Details of using synchronous subprocesses.
1212* Asynchronous Processes:: Starting up an asynchronous subprocess.
1213* Deleting Processes:: Eliminating an asynchronous subprocess.
1214* Process Information:: Accessing run-status and other attributes.
1215* Input to Processes:: Sending input to an asynchronous subprocess.
1216* Signals to Processes:: Stopping, continuing or interrupting
1217 an asynchronous subprocess.
1218* Output from Processes:: Collecting output from an asynchronous subprocess.
1219* Sentinels:: Sentinels run when process run-status changes.
1220* Query Before Exit:: Whether to query if exiting will kill a process.
a65f6a85 1221* System Processes:: Accessing other processes running on your system.
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1222* Transaction Queues:: Transaction-based communication with subprocesses.
1223* Network:: Opening network connections.
1224* Network Servers:: Network servers let Emacs accept net connections.
1225* Datagrams:: UDP network connections.
1226* Low-Level Network:: Lower-level but more general function
1227 to create connections and servers.
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1228* Misc Network:: Additional relevant functions for
1229 network connections.
c73e02fa 1230* Serial Ports:: Communicating with serial ports.
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1231* Byte Packing:: Using bindat to pack and unpack binary data.
1232
1233Receiving Output from Processes
1234
1235* Process Buffers:: If no filter, output is put in a buffer.
1236* Filter Functions:: Filter functions accept output from the process.
1237* Decoding Output:: Filters can get unibyte or multibyte strings.
1238* Accepting Output:: How to wait until process output arrives.
1239
1240Low-Level Network Access
1241
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1242* Network Processes:: Using @code{make-network-process}.
1243* Network Options:: Further control over network connections.
1244* Network Feature Testing:: Determining which network features work on
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1245 the machine you are using.
1246
1247Packing and Unpacking Byte Arrays
1248
1249* Bindat Spec:: Describing data layout.
1250* Bindat Functions:: Doing the unpacking and packing.
1251* Bindat Examples:: Samples of what bindat.el can do for you!
1252
1253Emacs Display
1254
1255* Refresh Screen:: Clearing the screen and redrawing everything on it.
1256* Forcing Redisplay:: Forcing redisplay.
1257* Truncation:: Folding or wrapping long text lines.
1258* The Echo Area:: Displaying messages at the bottom of the screen.
1259* Warnings:: Displaying warning messages for the user.
1260* Invisible Text:: Hiding part of the buffer text.
1261* Selective Display:: Hiding part of the buffer text (the old way).
1262* Temporary Displays:: Displays that go away automatically.
d24880de 1263* Overlays:: Use overlays to highlight parts of the buffer.
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1264* Width:: How wide a character or string is on the screen.
1265* Line Height:: Controlling the height of lines.
d24880de 1266* Faces:: A face defines a graphics style
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1267 for text characters: font, colors, etc.
1268* Fringes:: Controlling window fringes.
1269* Scroll Bars:: Controlling vertical scroll bars.
1270* Display Property:: Enabling special display features.
1271* Images:: Displaying images in Emacs buffers.
1272* Buttons:: Adding clickable buttons to Emacs buffers.
1273* Abstract Display:: Emacs' Widget for Object Collections.
1274* Blinking:: How Emacs shows the matching open parenthesis.
d24880de 1275* Usual Display:: The usual conventions for displaying
561c0216 1276 nonprinting chars.
d24880de 1277* Display Tables:: How to specify other conventions.
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1278* Beeping:: Audible signal to the user.
1279* Window Systems:: Which window system is being used.
1280
1281The Echo Area
1282
1283* Displaying Messages:: Explicitly displaying text in the echo area.
1284* Progress:: Informing user about progress of a long operation.
1285* Logging Messages:: Echo area messages are logged for the user.
1286* Echo Area Customization:: Controlling the echo area.
1287
1288Reporting Warnings
1289
1290* Warning Basics:: Warnings concepts and functions to report them.
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1291* Warning Variables:: Variables programs bind to customize
1292 their warnings.
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1293* Warning Options:: Variables users set to control display of warnings.
1294
1295Overlays
1296
1297* Managing Overlays:: Creating and moving overlays.
1298* Overlay Properties:: How to read and set properties.
d24880de 1299 What properties do to the screen display.
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1300* Finding Overlays:: Searching for overlays.
1301
1302Faces
1303
1304* Defining Faces:: How to define a face with @code{defface}.
1305* Face Attributes:: What is in a face?
1306* Attribute Functions:: Functions to examine and set face attributes.
1307* Displaying Faces:: How Emacs combines the faces specified for
1308 a character.
606061b9 1309* Face Remapping:: Remapping faces to alternative definitions.
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1310* Face Functions:: How to define and examine faces.
1311* Auto Faces:: Hook for automatic face assignment.
606061b9 1312* Font Selection:: Finding the best available font for a face.
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1313* Font Lookup:: Looking up the names of available fonts
1314 and information about them.
1315* Fontsets:: A fontset is a collection of fonts
1316 that handle a range of character sets.
561c0216 1317* Low-Level Font:: Lisp representation for character display fonts.
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1318
1319Fringes
1320
1321* Fringe Size/Pos:: Specifying where to put the window fringes.
1322* Fringe Indicators:: Displaying indicator icons in the window fringes.
1323* Fringe Cursors:: Displaying cursors in the right fringe.
1324* Fringe Bitmaps:: Specifying bitmaps for fringe indicators.
1325* Customizing Bitmaps:: Specifying your own bitmaps to use in the fringes.
1326* Overlay Arrow:: Display of an arrow to indicate position.
1327
1328The @code{display} Property
1329
561c0216 1330* Replacing Specs:: Display specs that replace the text.
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1331* Specified Space:: Displaying one space with a specified width.
1332* Pixel Specification:: Specifying space width or height in pixels.
1333* Other Display Specs:: Displaying an image; magnifying text; moving it
1334 up or down on the page; adjusting the width
1335 of spaces within text.
1336* Display Margins:: Displaying text or images to the side of
1337 the main text.
1338
1339Images
1340
561c0216 1341* Image Formats:: Supported image formats.
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1342* Image Descriptors:: How to specify an image for use in @code{:display}.
1343* XBM Images:: Special features for XBM format.
1344* XPM Images:: Special features for XPM format.
1345* GIF Images:: Special features for GIF format.
561c0216 1346* TIFF Images:: Special features for TIFF format.
2833b3ff 1347* PostScript Images:: Special features for PostScript format.
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1348* Other Image Types:: Various other formats are supported.
1349* Defining Images:: Convenient ways to define an image for later use.
1350* Showing Images:: Convenient ways to display an image once
1351 it is defined.
1352* Image Cache:: Internal mechanisms of image display.
1353
1354Buttons
1355
1356* Button Properties:: Button properties with special meanings.
1357* Button Types:: Defining common properties for classes of buttons.
1358* Making Buttons:: Adding buttons to Emacs buffers.
1359* Manipulating Buttons:: Getting and setting properties of buttons.
1360* Button Buffer Commands:: Buffer-wide commands and bindings for buttons.
1361
1362Abstract Display
1363
1364* Abstract Display Functions:: Functions in the Ewoc package.
1365* Abstract Display Example:: Example of using Ewoc.
1366
1367Display Tables
1368
1369* Display Table Format:: What a display table consists of.
1370* Active Display Table:: How Emacs selects a display table to use.
1371* Glyphs:: How to define a glyph, and what glyphs mean.
1372
1373Operating System Interface
1374
561c0216 1375* Starting Up:: Customizing Emacs startup processing.
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1376* Getting Out:: How exiting works (permanent or temporary).
1377* System Environment:: Distinguish the name and kind of system.
1378* User Identification:: Finding the name and user id of the user.
d24880de 1379* Time of Day:: Getting the current time.
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1380* Time Conversion:: Converting a time from numeric form to
1381 calendrical data and vice versa.
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1382* Time Parsing:: Converting a time from numeric form to text
1383 and vice versa.
1384* Processor Run Time:: Getting the run time used by Emacs.
1385* Time Calculations:: Adding, subtracting, comparing times, etc.
d24880de 1386* Timers:: Setting a timer to call a function at a
561c0216 1387 certain time.
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1388* Idle Timers:: Setting a timer to call a function when Emacs has
1389 been idle for a certain length of time.
1390* Terminal Input:: Accessing and recording terminal input.
1391* Terminal Output:: Controlling and recording terminal output.
1392* Sound Output:: Playing sounds on the computer's speaker.
121e43fd 1393* X11 Keysyms:: Operating on key symbols for X Windows.
b8d4c8d0 1394* Batch Mode:: Running Emacs without terminal interaction.
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1395* Session Management:: Saving and restoring state with
1396 X Session Management.
b8d4c8d0 1397
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1398Preparing Lisp code for distribution
1399
1400* Packaging Basics:: The basic concepts of Emacs Lisp packages.
1401* Simple Packages:: How to package a single .el file.
1402* Multi-file Packages:: How to package multiple files.
1403
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1404Starting Up Emacs
1405
561c0216
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1406* Startup Summary:: Sequence of actions Emacs performs at startup.
1407* Init File:: Details on reading the init file.
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1408* Terminal-Specific:: How the terminal-specific Lisp file is read.
1409* Command-Line Arguments:: How command-line arguments are processed,
1410 and how you can customize them.
1411
1412Getting Out of Emacs
1413
1414* Killing Emacs:: Exiting Emacs irreversibly.
1415* Suspending Emacs:: Exiting Emacs reversibly.
1416
1417Terminal Input
1418
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1419* Input Modes:: Options for how input is processed.
1420* Recording Input:: Saving histories of recent or all input events.
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1421
1422Tips and Conventions
1423
1424* Coding Conventions:: Conventions for clean and robust programs.
1425* Key Binding Conventions:: Which keys should be bound by which programs.
1426* Programming Tips:: Making Emacs code fit smoothly in Emacs.
1427* Compilation Tips:: Making compiled code run fast.
1428* Warning Tips:: Turning off compiler warnings.
1429* Documentation Tips:: Writing readable documentation strings.
d24880de 1430* Comment Tips:: Conventions for writing comments.
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1431* Library Headers:: Standard headers for library packages.
1432
1433GNU Emacs Internals
1434
1435* Building Emacs:: How the dumped Emacs is made.
1436* Pure Storage:: A kludge to make preloaded Lisp functions sharable.
1437* Garbage Collection:: Reclaiming space for Lisp objects no longer used.
1438* Memory Usage:: Info about total size of Lisp objects made so far.
1439* Writing Emacs Primitives:: Writing C code for Emacs.
1440* Object Internals:: Data formats of buffers, windows, processes.
1441
1442Object Internals
1443
1444* Buffer Internals:: Components of a buffer structure.
1445* Window Internals:: Components of a window structure.
1446* Process Internals:: Components of a process structure.
1447@end detailmenu
1448@end menu
1449
1450@include intro.texi
1451@include objects.texi
1452@include numbers.texi
1453@include strings.texi
1454
1455@include lists.texi
1456@include sequences.texi
1457@include hash.texi
1458@include symbols.texi
1459@include eval.texi
1460
1461@include control.texi
1462@include variables.texi
1463@include functions.texi
1464@include macros.texi
1465
1466@include customize.texi
1467@include loading.texi
1468@include compile.texi
1469@include advice.texi
1470
561c0216 1471@c This includes edebug.texi.
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1472@include debugging.texi
1473@include streams.texi
1474@include minibuf.texi
1475@include commands.texi
1476
1477@include keymaps.texi
1478@include modes.texi
1479@include help.texi
1480@include files.texi
1481
1482@include backups.texi
1483@include buffers.texi
1484@include windows.texi
1485@include frames.texi
1486
1487@include positions.texi
1488@include markers.texi
1489@include text.texi
1490@include nonascii.texi
1491
1492@include searching.texi
1493@include syntax.texi
1494@include abbrevs.texi
1495@include processes.texi
1496
1497@include display.texi
1498@include os.texi
1499
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1500@include package.texi
1501
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1502@c MOVE to Emacs Manual: include misc-modes.texi
1503
1504@c appendices
1505
1506@c REMOVE this: include non-hacker.texi
1507
1508@include anti.texi
1509@include doclicense.texi
1510@include gpl.texi
1511@include tips.texi
1512@include internals.texi
1513@include errors.texi
1514@include locals.texi
1515@include maps.texi
1516@include hooks.texi
1517
1518@include index.texi
1519
1520@ignore
1521@node New Symbols, , Index, Top
1522@unnumbered New Symbols Since the Previous Edition
1523
1524@printindex tp
1525@end ignore
1526
1527@bye
1528
1529\f
1530These words prevent "local variables" above from confusing Emacs.