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1 \input texinfo @c -*-texinfo-*-
2 @c This file is used for printing the GNU Emacs Lisp Reference Manual
3 @c in two volumes. It is a modified version of elisp.texi.
4 @c Copyright (C) 1990-1995, 1998-1999, 2001-2012
5 @c Free Software Foundation, Inc.
6 @c %**start of header
7 @setfilename elisp
8 @settitle GNU Emacs Lisp Reference Manual: Volume 1
9 @c %**end of header
10
11 @c See two-volume-cross-refs.txt.
12 @tex
13 \message{Formatting for two volume edition...Volume 1...}
14 %
15 % Read special toc file, set up in two-volume.make.
16 \gdef\tocreadfilename{elisp1-toc-ready.toc}
17 %
18 % Don't make outlines, they're not needed and \readdatafile can't pay
19 % attention to the special definition above.
20 \global\let\pdfmakeoutlines=\relax
21 %
22 % Start volume 1 chapter numbering at 1; this must be listed as chapno0.
23 \global\chapno=0
24 @end tex
25
26 @c Version of the manual and of Emacs.
27 @c Please remember to update the edition number in README as well.
28 @set VERSION 3.0
29 @include emacsver.texi
30 @set DATE July 2009
31
32 @dircategory Emacs
33 @direntry
34 * Elisp: (elisp). The Emacs Lisp Reference Manual.
35 @end direntry
36
37 @c in general, keep the following line commented out, unless doing a
38 @c copy of this manual that will be published. the manual should go
39 @c onto the distribution in the full, 8.5 x 11" size.
40 @set smallbook
41
42 @ifset smallbook
43 @smallbook
44 @end ifset
45
46 @c per rms and peterb, use 10pt fonts for the main text, mostly to
47 @c save on paper cost.
48 @c Do this inside @tex for now, so current makeinfo does not complain.
49 @tex
50 @ifset smallbook
51 @fonttextsize 10
52 \global\let\urlcolor=\Black % don't print links in grayscale
53 \global\let\linkcolor=\Black
54 @end ifset
55 \global\hbadness=6666 % don't worry about not-too-underfull boxes
56 @end tex
57
58 @c Combine indices.
59 @synindex cp fn
60 @syncodeindex vr fn
61 @syncodeindex ky fn
62 @syncodeindex pg fn
63 @c We use the "type index" to index new functions and variables.
64 @c @syncodeindex tp fn
65
66 @copying
67 This is edition @value{VERSION} of the GNU Emacs Lisp Reference Manual,@*
68 corresponding to Emacs version @value{EMACSVER}.
69
70 Copyright @copyright{} 1990-1996, 1998-2012 Free Software Foundation, Inc.
71
72 @quotation
73 Permission is granted to copy, distribute and/or modify this document
74 under the terms of the GNU Free Documentation License, Version 1.3 or
75 any later version published by the Free Software Foundation; with the
76 Invariant Sections being ``GNU General Public License,'' with the
77 Front-Cover texts being ``A GNU Manual,'' and with the Back-Cover
78 Texts as in (a) below. A copy of the license is included in the
79 section entitled ``GNU Free Documentation License.''
80
81 (a) The FSF's Back-Cover Text is: ``You have the freedom to copy and
82 modify this GNU manual. Buying copies from the FSF supports it in
83 developing GNU and promoting software freedom.''
84 @end quotation
85 @end copying
86
87 @titlepage
88 @title GNU Emacs Lisp Reference Manual
89 @subtitle Volume 1
90 @subtitle For Emacs Version @value{EMACSVER}
91 @subtitle Revision @value{VERSION}, @value{DATE}
92
93 @author by Bil Lewis, Dan LaLiberte, Richard Stallman
94 @author and the GNU Manual Group
95 @page
96 @vskip 0pt plus 1filll
97 @insertcopying
98
99 @sp 2
100
101 Published by the Free Software Foundation @*
102 51 Franklin St, Fifth Floor @*
103 Boston, MA 02110-1301 @*
104 USA @*
105 ISBN 1-882114-74-4
106
107 @sp 2
108 Cover art by Etienne Suvasa.
109 @end titlepage
110
111
112 @c Print the tables of contents
113 @summarycontents
114 @contents
115
116
117 @ifnottex
118 @node Top, Introduction, (dir), (dir)
119 @top Emacs Lisp
120
121 This Info file contains edition @value{VERSION} of the GNU Emacs Lisp
122 Reference Manual, corresponding to GNU Emacs version @value{EMACSVER}.
123 @end ifnottex
124
125 @menu
126 * Introduction:: Introduction and conventions used.
127
128 * Lisp Data Types:: Data types of objects in Emacs Lisp.
129 * Numbers:: Numbers and arithmetic functions.
130 * Strings and Characters:: Strings, and functions that work on them.
131 * Lists:: Lists, cons cells, and related functions.
132 * Sequences Arrays Vectors:: Lists, strings and vectors are called sequences.
133 Certain functions act on any kind of sequence.
134 The description of vectors is here as well.
135 * Hash Tables:: Very fast lookup-tables.
136 * Symbols:: Symbols represent names, uniquely.
137
138 * Evaluation:: How Lisp expressions are evaluated.
139 * Control Structures:: Conditionals, loops, nonlocal exits.
140 * Variables:: Using symbols in programs to stand for values.
141 * Functions:: A function is a Lisp program
142 that can be invoked from other functions.
143 * Macros:: Macros are a way to extend the Lisp language.
144 * Customization:: Writing customization declarations.
145
146 * Loading:: Reading files of Lisp code into Lisp.
147 * Byte Compilation:: Compilation makes programs run faster.
148 * Advising Functions:: Adding to the definition of a function.
149 * Debugging:: Tools and tips for debugging Lisp programs.
150
151 * Read and Print:: Converting Lisp objects to text and back.
152 * Minibuffers:: Using the minibuffer to read input.
153 * Command Loop:: How the editor command loop works,
154 and how you can call its subroutines.
155 * Keymaps:: Defining the bindings from keys to commands.
156 * Modes:: Defining major and minor modes.
157 * Documentation:: Writing and using documentation strings.
158
159 * Files:: Accessing files.
160 * Backups and Auto-Saving:: Controlling how backups and auto-save
161 files are made.
162 * Buffers:: Creating and using buffer objects.
163 * Windows:: Manipulating windows and displaying buffers.
164 * Frames:: Making multiple system-level windows.
165 * Positions:: Buffer positions and motion functions.
166 * Markers:: Markers represent positions and update
167 automatically when the text is changed.
168
169 * Text:: Examining and changing text in buffers.
170 * Non-ASCII Characters:: Non-ASCII text in buffers and strings.
171 * Searching and Matching:: Searching buffers for strings or regexps.
172 * Syntax Tables:: The syntax table controls word and list parsing.
173 * Abbrevs:: How Abbrev mode works, and its data structures.
174
175 * Processes:: Running and communicating with subprocesses.
176 * Display:: Features for controlling the screen display.
177 * System Interface:: Getting the user id, system type, environment
178 variables, and other such things.
179
180 * Packaging:: Preparing Lisp code for distribution.
181
182 Appendices
183
184 * Antinews:: Info for users downgrading to Emacs 22.
185 * GNU Free Documentation License:: The license for this documentation.
186 * GPL:: Conditions for copying and changing GNU Emacs.
187 * Tips:: Advice and coding conventions for Emacs Lisp.
188 * GNU Emacs Internals:: Building and dumping Emacs;
189 internal data structures.
190 * Standard Errors:: List of all error symbols.
191 * Standard Buffer-Local Variables::
192 List of variables buffer-local in all buffers.
193 * Standard Keymaps:: List of standard keymaps.
194 * Standard Hooks:: List of standard hook variables.
195
196 * Index:: Index including concepts, functions, variables,
197 and other terms.
198
199 @ignore
200 * New Symbols:: New functions and variables in Emacs @value{EMACSVER}.
201 @end ignore
202
203 @c Do NOT modify the following 3 lines! They must have this form to
204 @c be correctly identified by `texinfo-multiple-files-update'. In
205 @c particular, the detailed menu header line MUST be identical to the
206 @c value of `texinfo-master-menu-header'. See texnfo-upd.el.
207
208 @detailmenu
209 --- The Detailed Node Listing ---
210 ---------------------------------
211
212 Here are other nodes that are subnodes of those already listed,
213 mentioned here so you can get to them in one step:
214
215 Introduction
216
217 * Caveats:: Flaws and a request for help.
218 * Lisp History:: Emacs Lisp is descended from Maclisp.
219 * Conventions:: How the manual is formatted.
220 * Version Info:: Which Emacs version is running?
221 * Acknowledgements:: The authors, editors, and sponsors of this manual.
222
223 Conventions
224
225 * Some Terms:: Explanation of terms we use in this manual.
226 * nil and t:: How the symbols @code{nil} and @code{t} are used.
227 * Evaluation Notation:: The format we use for examples of evaluation.
228 * Printing Notation:: The format we use when examples print text.
229 * Error Messages:: The format we use for examples of errors.
230 * Buffer Text Notation:: The format we use for buffer contents in examples.
231 * Format of Descriptions:: Notation for describing functions, variables, etc.
232
233 Format of Descriptions
234
235 * A Sample Function Description:: A description of an imaginary
236 function, @code{foo}.
237 * A Sample Variable Description:: A description of an imaginary
238 variable, @code{electric-future-map}.
239
240 Lisp Data Types
241
242 * Printed Representation:: How Lisp objects are represented as text.
243 * Comments:: Comments and their formatting conventions.
244 * Programming Types:: Types found in all Lisp systems.
245 * Editing Types:: Types specific to Emacs.
246 * Circular Objects:: Read syntax for circular structure.
247 * Type Predicates:: Tests related to types.
248 * Equality Predicates:: Tests of equality between any two objects.
249
250 Programming Types
251
252 * Integer Type:: Numbers without fractional parts.
253 * Floating Point Type:: Numbers with fractional parts and with a large range.
254 * Character Type:: The representation of letters, numbers and
255 control characters.
256 * Symbol Type:: A multi-use object that refers to a function,
257 variable, or property list, and has a unique identity.
258 * Sequence Type:: Both lists and arrays are classified as sequences.
259 * Cons Cell Type:: Cons cells, and lists (which are made from cons cells).
260 * Array Type:: Arrays include strings and vectors.
261 * String Type:: An (efficient) array of characters.
262 * Vector Type:: One-dimensional arrays.
263 * Char-Table Type:: One-dimensional sparse arrays indexed by characters.
264 * Bool-Vector Type:: One-dimensional arrays of @code{t} or @code{nil}.
265 * Hash Table Type:: Super-fast lookup tables.
266 * Function Type:: A piece of executable code you can call from elsewhere.
267 * Macro Type:: A method of expanding an expression into another
268 expression, more fundamental but less pretty.
269 * Primitive Function Type:: A function written in C, callable from Lisp.
270 * Byte-Code Type:: A function written in Lisp, then compiled.
271 * Autoload Type:: A type used for automatically loading seldom-used
272 functions.
273
274 Character Type
275
276 * Basic Char Syntax:: Syntax for regular characters.
277 * General Escape Syntax:: How to specify characters by their codes.
278 * Ctl-Char Syntax:: Syntax for control characters.
279 * Meta-Char Syntax:: Syntax for meta-characters.
280 * Other Char Bits:: Syntax for hyper-, super-, and alt-characters.
281
282 Cons Cell and List Types
283
284 * Box Diagrams:: Drawing pictures of lists.
285 * Dotted Pair Notation:: A general syntax for cons cells.
286 * Association List Type:: A specially constructed list.
287
288 String Type
289
290 * Syntax for Strings:: How to specify Lisp strings.
291 * Non-ASCII in Strings:: International characters in strings.
292 * Nonprinting Characters:: Literal unprintable characters in strings.
293 * Text Props and Strings:: Strings with text properties.
294
295 Editing Types
296
297 * Buffer Type:: The basic object of editing.
298 * Marker Type:: A position in a buffer.
299 * Window Type:: Buffers are displayed in windows.
300 * Frame Type:: Windows subdivide frames.
301 * Terminal Type:: A terminal device displays frames.
302 * Window Configuration Type:: Recording the way a frame is subdivided.
303 * Frame Configuration Type:: Recording the status of all frames.
304 * Process Type:: A subprocess of Emacs running on the underlying OS.
305 * Stream Type:: Receive or send characters.
306 * Keymap Type:: What function a keystroke invokes.
307 * Overlay Type:: How an overlay is represented.
308 * Font Type:: Fonts for displaying text.
309
310 Numbers
311
312 * Integer Basics:: Representation and range of integers.
313 * Float Basics:: Representation and range of floating point.
314 * Predicates on Numbers:: Testing for numbers.
315 * Comparison of Numbers:: Equality and inequality predicates.
316 * Numeric Conversions:: Converting float to integer and vice versa.
317 * Arithmetic Operations:: How to add, subtract, multiply and divide.
318 * Rounding Operations:: Explicitly rounding floating point numbers.
319 * Bitwise Operations:: Logical and, or, not, shifting.
320 * Math Functions:: Trig, exponential and logarithmic functions.
321 * Random Numbers:: Obtaining random integers, predictable or not.
322
323 Strings and Characters
324
325 * String Basics:: Basic properties of strings and characters.
326 * Predicates for Strings:: Testing whether an object is a string or char.
327 * Creating Strings:: Functions to allocate new strings.
328 * Modifying Strings:: Altering the contents of an existing string.
329 * Text Comparison:: Comparing characters or strings.
330 * String Conversion:: Converting to and from characters and strings.
331 * Formatting Strings:: @code{format}: Emacs's analogue of @code{printf}.
332 * Case Conversion:: Case conversion functions.
333 * Case Tables:: Customizing case conversion.
334
335 Lists
336
337 * Cons Cells:: How lists are made out of cons cells.
338 * List-related Predicates:: Is this object a list? Comparing two lists.
339 * List Elements:: Extracting the pieces of a list.
340 * Building Lists:: Creating list structure.
341 * List Variables:: Modifying lists stored in variables.
342 * Modifying Lists:: Storing new pieces into an existing list.
343 * Sets And Lists:: A list can represent a finite mathematical set.
344 * Association Lists:: A list can represent a finite relation or mapping.
345 * Rings:: Managing a fixed-size ring of objects.
346
347 Modifying Existing List Structure
348
349 * Setcar:: Replacing an element in a list.
350 * Setcdr:: Replacing part of the list backbone.
351 This can be used to remove or add elements.
352 * Rearrangement:: Reordering the elements in a list; combining lists.
353
354 Sequences, Arrays, and Vectors
355
356 * Sequence Functions:: Functions that accept any kind of sequence.
357 * Arrays:: Characteristics of arrays in Emacs Lisp.
358 * Array Functions:: Functions specifically for arrays.
359 * Vectors:: Special characteristics of Emacs Lisp vectors.
360 * Vector Functions:: Functions specifically for vectors.
361 * Char-Tables:: How to work with char-tables.
362 * Bool-Vectors:: How to work with bool-vectors.
363
364 Hash Tables
365
366 * Creating Hash:: Functions to create hash tables.
367 * Hash Access:: Reading and writing the hash table contents.
368 * Defining Hash:: Defining new comparison methods.
369 * Other Hash:: Miscellaneous.
370
371 Symbols
372
373 * Symbol Components:: Symbols have names, values, function definitions
374 and property lists.
375 * Definitions:: A definition says how a symbol will be used.
376 * Creating Symbols:: How symbols are kept unique.
377 * Property Lists:: Each symbol has a property list
378 for recording miscellaneous information.
379
380 Property Lists
381
382 * Plists and Alists:: Comparison of the advantages of property
383 lists and association lists.
384 * Symbol Plists:: Functions to access symbols' property lists.
385 * Other Plists:: Accessing property lists stored elsewhere.
386
387 Evaluation
388
389 * Intro Eval:: Evaluation in the scheme of things.
390 * Forms:: How various sorts of objects are evaluated.
391 * Quoting:: Avoiding evaluation (to put constants in
392 the program).
393 * Eval:: How to invoke the Lisp interpreter explicitly.
394
395 Kinds of Forms
396
397 * Self-Evaluating Forms:: Forms that evaluate to themselves.
398 * Symbol Forms:: Symbols evaluate as variables.
399 * Classifying Lists:: How to distinguish various sorts of list forms.
400 * Function Indirection:: When a symbol appears as the car of a list,
401 we find the real function via the symbol.
402 * Function Forms:: Forms that call functions.
403 * Macro Forms:: Forms that call macros.
404 * Special Forms:: "Special forms" are idiosyncratic primitives,
405 most of them extremely important.
406 * Autoloading:: Functions set up to load files
407 containing their real definitions.
408
409 Control Structures
410
411 * Sequencing:: Evaluation in textual order.
412 * Conditionals:: @code{if}, @code{cond}, @code{when}, @code{unless}.
413 * Combining Conditions:: @code{and}, @code{or}, @code{not}.
414 * Iteration:: @code{while} loops.
415 * Nonlocal Exits:: Jumping out of a sequence.
416
417 Nonlocal Exits
418
419 * Catch and Throw:: Nonlocal exits for the program's own purposes.
420 * Examples of Catch:: Showing how such nonlocal exits can be written.
421 * Errors:: How errors are signaled and handled.
422 * Cleanups:: Arranging to run a cleanup form if an
423 error happens.
424
425 Errors
426
427 * Signaling Errors:: How to report an error.
428 * Processing of Errors:: What Emacs does when you report an error.
429 * Handling Errors:: How you can trap errors and continue execution.
430 * Error Symbols:: How errors are classified for trapping them.
431
432 Variables
433
434 * Global Variables:: Variable values that exist permanently, everywhere.
435 * Constant Variables:: Certain "variables" have values that never change.
436 * Local Variables:: Variable values that exist only temporarily.
437 * Void Variables:: Symbols that lack values.
438 * Defining Variables:: A definition says a symbol is used as a variable.
439 * Tips for Defining:: Things you should think about when you
440 define a variable.
441 * Accessing Variables:: Examining values of variables whose names
442 are known only at run time.
443 * Setting Variables:: Storing new values in variables.
444 * Variable Scoping:: How Lisp chooses among local and global values.
445 * Buffer-Local Variables:: Variable values in effect only in one buffer.
446 * File Local Variables:: Handling local variable lists in files.
447 * Directory Local Variables:: Local variables common to all files in a
448 directory.
449 * Frame-Local Variables:: Frame-local bindings for variables.
450 * Variable Aliases:: Variables that are aliases for other variables.
451 * Variables with Restricted Values:: Non-constant variables whose value can
452 @emph{not} be an arbitrary Lisp object.
453
454 Scoping Rules for Variable Bindings
455
456 * Scope:: Scope means where in the program a value
457 is visible. Comparison with other languages.
458 * Extent:: Extent means how long in time a value exists.
459 * Impl of Scope:: Two ways to implement dynamic scoping.
460 * Using Scoping:: How to use dynamic scoping carefully and
461 avoid problems.
462
463 Buffer-Local Variables
464
465 * Intro to Buffer-Local:: Introduction and concepts.
466 * Creating Buffer-Local:: Creating and destroying buffer-local bindings.
467 * Default Value:: The default value is seen in buffers
468 that don't have their own buffer-local values.
469
470 Functions
471
472 * What Is a Function:: Lisp functions vs. primitives; terminology.
473 * Lambda Expressions:: How functions are expressed as Lisp objects.
474 * Function Names:: A symbol can serve as the name of a function.
475 * Defining Functions:: Lisp expressions for defining functions.
476 * Calling Functions:: How to use an existing function.
477 * Mapping Functions:: Applying a function to each element of a list, etc.
478 * Anonymous Functions:: Lambda expressions are functions with no names.
479 * Function Cells:: Accessing or setting the function definition
480 of a symbol.
481 * Obsolete Functions:: Declaring functions obsolete.
482 * Inline Functions:: Defining functions that the compiler
483 will open code.
484 * Declaring Functions:: Telling the compiler that a function is defined.
485 * Function Safety:: Determining whether a function is safe to call.
486 * Related Topics:: Cross-references to specific Lisp primitives
487 that have a special bearing on how
488 functions work.
489
490 Lambda Expressions
491
492 * Lambda Components:: The parts of a lambda expression.
493 * Simple Lambda:: A simple example.
494 * Argument List:: Details and special features of argument lists.
495 * Function Documentation:: How to put documentation in a function.
496
497 Macros
498
499 * Simple Macro:: A basic example.
500 * Expansion:: How, when and why macros are expanded.
501 * Compiling Macros:: How macros are expanded by the compiler.
502 * Defining Macros:: How to write a macro definition.
503 * Backquote:: Easier construction of list structure.
504 * Problems with Macros:: Don't evaluate the macro arguments too many times.
505 Don't hide the user's variables.
506 * Indenting Macros:: Specifying how to indent macro calls.
507
508 Common Problems Using Macros
509
510 * Wrong Time:: Do the work in the expansion, not in the macro.
511 * Argument Evaluation:: The expansion should evaluate each macro arg once.
512 * Surprising Local Vars:: Local variable bindings in the expansion
513 require special care.
514 * Eval During Expansion:: Don't evaluate them; put them in the expansion.
515 * Repeated Expansion:: Avoid depending on how many times expansion is done.
516
517 Writing Customization Definitions
518
519 * Common Keywords:: Common keyword arguments for all kinds of
520 customization declarations.
521 * Group Definitions:: Writing customization group definitions.
522 * Variable Definitions:: Declaring user options.
523 * Customization Types:: Specifying the type of a user option.
524
525 Customization Types
526
527 * Simple Types:: Simple customization types: sexp, integer, number,
528 string, file, directory, alist.
529 * Composite Types:: Build new types from other types or data.
530 * Splicing into Lists:: Splice elements into list with @code{:inline}.
531 * Type Keywords:: Keyword-argument pairs in a customization type.
532 * Defining New Types:: Give your type a name.
533
534 Loading
535
536 * How Programs Do Loading:: The @code{load} function and others.
537 * Load Suffixes:: Details about the suffixes that @code{load} tries.
538 * Library Search:: Finding a library to load.
539 * Loading Non-ASCII:: Non-@acronym{ASCII} characters in Emacs Lisp files.
540 * Autoload:: Setting up a function to autoload.
541 * Repeated Loading:: Precautions about loading a file twice.
542 * Named Features:: Loading a library if it isn't already loaded.
543 * Where Defined:: Finding which file defined a certain symbol.
544 * Unloading:: How to "unload" a library that was loaded.
545 * Hooks for Loading:: Providing code to be run when
546 particular libraries are loaded.
547
548 Byte Compilation
549
550 * Speed of Byte-Code:: An example of speedup from byte compilation.
551 * Compilation Functions:: Byte compilation functions.
552 * Docs and Compilation:: Dynamic loading of documentation strings.
553 * Dynamic Loading:: Dynamic loading of individual functions.
554 * Eval During Compile:: Code to be evaluated when you compile.
555 * Compiler Errors:: Handling compiler error messages.
556 * Byte-Code Objects:: The data type used for byte-compiled functions.
557 * Disassembly:: Disassembling byte-code; how to read byte-code.
558
559 Advising Emacs Lisp Functions
560
561 * Simple Advice:: A simple example to explain the basics of advice.
562 * Defining Advice:: Detailed description of @code{defadvice}.
563 * Around-Advice:: Wrapping advice around a function's definition.
564 * Computed Advice:: ...is to @code{defadvice} as @code{fset} is to @code{defun}.
565 * Activation of Advice:: Advice doesn't do anything until you activate it.
566 * Enabling Advice:: You can enable or disable each piece of advice.
567 * Preactivation:: Preactivation is a way of speeding up the
568 loading of compiled advice.
569 * Argument Access in Advice:: How advice can access the function's arguments.
570 * Advising Primitives:: Accessing arguments when advising a primitive.
571 * Combined Definition:: How advice is implemented.
572
573 Debugging Lisp Programs
574
575 * Debugger:: How the Emacs Lisp debugger is implemented.
576 * Edebug:: A source-level Emacs Lisp debugger.
577 * Syntax Errors:: How to find syntax errors.
578 * Test Coverage:: Ensuring you have tested all branches in your code.
579 * Compilation Errors:: How to find errors that show up in
580 byte compilation.
581
582 The Lisp Debugger
583
584 * Error Debugging:: Entering the debugger when an error happens.
585 * Infinite Loops:: Stopping and debugging a program that doesn't exit.
586 * Function Debugging:: Entering it when a certain function is called.
587 * Explicit Debug:: Entering it at a certain point in the program.
588 * Using Debugger:: What the debugger does; what you see while in it.
589 * Debugger Commands:: Commands used while in the debugger.
590 * Invoking the Debugger:: How to call the function @code{debug}.
591 * Internals of Debugger:: Subroutines of the debugger, and global variables.
592
593 Edebug
594
595 * Using Edebug:: Introduction to use of Edebug.
596 * Instrumenting:: You must instrument your code
597 in order to debug it with Edebug.
598 * Edebug Execution Modes:: Execution modes, stopping more or less often.
599 * Jumping:: Commands to jump to a specified place.
600 * Edebug Misc:: Miscellaneous commands.
601 * Breaks:: Setting breakpoints to make the program stop.
602 * Trapping Errors:: Trapping errors with Edebug.
603 * Edebug Views:: Views inside and outside of Edebug.
604 * Edebug Eval:: Evaluating expressions within Edebug.
605 * Eval List:: Expressions whose values are displayed
606 each time you enter Edebug.
607 * Printing in Edebug:: Customization of printing.
608 * Trace Buffer:: How to produce trace output in a buffer.
609 * Coverage Testing:: How to test evaluation coverage.
610 * The Outside Context:: Data that Edebug saves and restores.
611 * Edebug and Macros:: Specifying how to handle macro calls.
612 * Edebug Options:: Option variables for customizing Edebug.
613
614 Breaks
615
616 * Breakpoints:: Breakpoints at stop points.
617 * Global Break Condition:: Breaking on an event.
618 * Source Breakpoints:: Embedding breakpoints in source code.
619
620 The Outside Context
621
622 * Checking Whether to Stop::When Edebug decides what to do.
623 * Edebug Display Update:: When Edebug updates the display.
624 * Edebug Recursive Edit:: When Edebug stops execution.
625
626 Edebug and Macros
627
628 * Instrumenting Macro Calls::The basic problem.
629 * Specification List:: How to specify complex patterns of evaluation.
630 * Backtracking:: What Edebug does when matching fails.
631 * Specification Examples:: To help understand specifications.
632
633 Debugging Invalid Lisp Syntax
634
635 * Excess Open:: How to find a spurious open paren or missing close.
636 * Excess Close:: How to find a spurious close paren or missing open.
637
638 Reading and Printing Lisp Objects
639
640 * Streams Intro:: Overview of streams, reading and printing.
641 * Input Streams:: Various data types that can be used as
642 input streams.
643 * Input Functions:: Functions to read Lisp objects from text.
644 * Output Streams:: Various data types that can be used as
645 output streams.
646 * Output Functions:: Functions to print Lisp objects as text.
647 * Output Variables:: Variables that control what the printing
648 functions do.
649
650 Minibuffers
651
652 * Intro to Minibuffers:: Basic information about minibuffers.
653 * Text from Minibuffer:: How to read a straight text string.
654 * Object from Minibuffer:: How to read a Lisp object or expression.
655 * Minibuffer History:: Recording previous minibuffer inputs
656 so the user can reuse them.
657 * Initial Input:: Specifying initial contents for the minibuffer.
658 * Completion:: How to invoke and customize completion.
659 * Yes-or-No Queries:: Asking a question with a simple answer.
660 * Multiple Queries:: Asking a series of similar questions.
661 * Reading a Password:: Reading a password from the terminal.
662 * Minibuffer Commands:: Commands used as key bindings in minibuffers.
663 * Minibuffer Contents:: How such commands access the minibuffer text.
664 * Minibuffer Windows:: Operating on the special minibuffer windows.
665 * Recursive Mini:: Whether recursive entry to minibuffer is allowed.
666 * Minibuffer Misc:: Various customization hooks and variables.
667
668 Completion
669
670 * Basic Completion:: Low-level functions for completing strings.
671 (These are too low level to use the minibuffer.)
672 * Minibuffer Completion:: Invoking the minibuffer with completion.
673 * Completion Commands:: Minibuffer commands that do completion.
674 * High-Level Completion:: Convenient special cases of completion
675 (reading buffer name, file name, etc.).
676 * Reading File Names:: Using completion to read file names and
677 shell commands.
678 * Completion Styles:: Specifying rules for performing completion.
679 * Programmed Completion:: Writing your own completion-function.
680
681 Command Loop
682
683 * Command Overview:: How the command loop reads commands.
684 * Defining Commands:: Specifying how a function should read arguments.
685 * Interactive Call:: Calling a command, so that it will read arguments.
686 * Distinguish Interactive:: Making a command distinguish interactive calls.
687 * Command Loop Info:: Variables set by the command loop for you to examine.
688 * Adjusting Point:: Adjustment of point after a command.
689 * Input Events:: What input looks like when you read it.
690 * Reading Input:: How to read input events from the keyboard or mouse.
691 * Special Events:: Events processed immediately and individually.
692 * Waiting:: Waiting for user input or elapsed time.
693 * Quitting:: How @kbd{C-g} works. How to catch or defer quitting.
694 * Prefix Command Arguments:: How the commands to set prefix args work.
695 * Recursive Editing:: Entering a recursive edit,
696 and why you usually shouldn't.
697 * Disabling Commands:: How the command loop handles disabled commands.
698 * Command History:: How the command history is set up, and how accessed.
699 * Keyboard Macros:: How keyboard macros are implemented.
700
701 Defining Commands
702
703 * Using Interactive:: General rules for @code{interactive}.
704 * Interactive Codes:: The standard letter-codes for reading arguments
705 in various ways.
706 * Interactive Examples:: Examples of how to read interactive arguments.
707
708 Input Events
709
710 * Keyboard Events:: Ordinary characters--keys with symbols on them.
711 * Function Keys:: Function keys--keys with names, not symbols.
712 * Mouse Events:: Overview of mouse events.
713 * Click Events:: Pushing and releasing a mouse button.
714 * Drag Events:: Moving the mouse before releasing the button.
715 * Button-Down Events:: A button was pushed and not yet released.
716 * Repeat Events:: Double and triple click (or drag, or down).
717 * Motion Events:: Just moving the mouse, not pushing a button.
718 * Focus Events:: Moving the mouse between frames.
719 * Misc Events:: Other events the system can generate.
720 * Event Examples:: Examples of the lists for mouse events.
721 * Classifying Events:: Finding the modifier keys in an event symbol.
722 Event types.
723 * Accessing Mouse:: Functions to extract info from mouse events.
724 * Accessing Scroll:: Functions to get info from scroll bar events.
725 * Strings of Events:: Special considerations for putting
726 keyboard character events in a string.
727
728 Reading Input
729
730 * Key Sequence Input:: How to read one key sequence.
731 * Reading One Event:: How to read just one event.
732 * Event Mod:: How Emacs modifies events as they are read.
733 * Invoking the Input Method:: How reading an event uses the input method.
734 * Quoted Character Input:: Asking the user to specify a character.
735 * Event Input Misc:: How to reread or throw away input events.
736
737 Keymaps
738
739 * Key Sequences:: Key sequences as Lisp objects.
740 * Keymap Basics:: Basic concepts of keymaps.
741 * Format of Keymaps:: What a keymap looks like as a Lisp object.
742 * Creating Keymaps:: Functions to create and copy keymaps.
743 * Inheritance and Keymaps:: How one keymap can inherit the bindings
744 of another keymap.
745 * Prefix Keys:: Defining a key with a keymap as its definition.
746 * Active Keymaps:: How Emacs searches the active keymaps
747 for a key binding.
748 * Searching Keymaps:: A pseudo-Lisp summary of searching active maps.
749 * Controlling Active Maps:: Each buffer has a local keymap
750 to override the standard (global) bindings.
751 A minor mode can also override them.
752 * Key Lookup:: Finding a key's binding in one keymap.
753 * Functions for Key Lookup:: How to request key lookup.
754 * Changing Key Bindings:: Redefining a key in a keymap.
755 * Remapping Commands:: A keymap can translate one command to another.
756 * Translation Keymaps:: Keymaps for translating sequences of events.
757 * Key Binding Commands:: Interactive interfaces for redefining keys.
758 * Scanning Keymaps:: Looking through all keymaps, for printing help.
759 * Menu Keymaps:: Defining a menu as a keymap.
760
761 Menu Keymaps
762
763 * Defining Menus:: How to make a keymap that defines a menu.
764 * Mouse Menus:: How users actuate the menu with the mouse.
765 * Keyboard Menus:: How users actuate the menu with the keyboard.
766 * Menu Example:: Making a simple menu.
767 * Menu Bar:: How to customize the menu bar.
768 * Tool Bar:: A tool bar is a row of images.
769 * Modifying Menus:: How to add new items to a menu.
770
771 Defining Menus
772
773 * Simple Menu Items:: A simple kind of menu key binding,
774 limited in capabilities.
775 * Extended Menu Items:: More powerful menu item definitions
776 let you specify keywords to enable
777 various features.
778 * Menu Separators:: Drawing a horizontal line through a menu.
779 * Alias Menu Items:: Using command aliases in menu items.
780
781 Major and Minor Modes
782
783 * Hooks:: How to use hooks; how to write code that provides hooks.
784 * Major Modes:: Defining major modes.
785 * Minor Modes:: Defining minor modes.
786 * Mode Line Format:: Customizing the text that appears in the mode line.
787 * Imenu:: Providing a menu of definitions made in a buffer.
788 * Font Lock Mode:: How modes can highlight text according to syntax.
789 * Desktop Save Mode:: How modes can have buffer state saved between
790 Emacs sessions.
791
792 Hooks
793
794 * Running Hooks:: How to run a hook.
795 * Setting Hooks:: How to put functions on a hook, or remove them.
796
797 Major Modes
798
799 * Major Mode Conventions:: Coding conventions for keymaps, etc.
800 * Auto Major Mode:: How Emacs chooses the major mode automatically.
801 * Mode Help:: Finding out how to use a mode.
802 * Derived Modes:: Defining a new major mode based on another major
803 mode.
804 * Basic Major Modes:: Modes that other modes are often derived from.
805 * Generic Modes:: Defining a simple major mode that supports
806 comment syntax and Font Lock mode.
807 * Mode Hooks:: Hooks run at the end of major mode commands.
808 * Example Major Modes:: Text mode and Lisp modes.
809
810 Minor Modes
811
812 * Minor Mode Conventions:: Tips for writing a minor mode.
813 * Keymaps and Minor Modes:: How a minor mode can have its own keymap.
814 * Defining Minor Modes:: A convenient facility for defining minor modes.
815
816 Mode Line Format
817
818 * Mode Line Basics:: Basic ideas of mode line control.
819 * Mode Line Data:: The data structure that controls the mode line.
820 * Mode Line Top:: The top level variable, mode-line-format.
821 * Mode Line Variables:: Variables used in that data structure.
822 * %-Constructs:: Putting information into a mode line.
823 * Properties in Mode:: Using text properties in the mode line.
824 * Header Lines:: Like a mode line, but at the top.
825 * Emulating Mode Line:: Formatting text as the mode line would.
826
827 Font Lock Mode
828
829 * Font Lock Basics:: Overview of customizing Font Lock.
830 * Search-based Fontification:: Fontification based on regexps.
831 * Customizing Keywords:: Customizing search-based fontification.
832 * Other Font Lock Variables:: Additional customization facilities.
833 * Levels of Font Lock:: Each mode can define alternative levels
834 so that the user can select more or less.
835 * Precalculated Fontification:: How Lisp programs that produce the buffer
836 contents can also specify how to fontify it.
837 * Faces for Font Lock:: Special faces specifically for Font Lock.
838 * Syntactic Font Lock:: Fontification based on syntax tables.
839 * Setting Syntax Properties:: Defining character syntax based on context
840 using the Font Lock mechanism.
841 * Multiline Font Lock:: How to coerce Font Lock into properly
842 highlighting multiline constructs.
843
844 Multiline Font Lock Constructs
845
846 * Font Lock Multiline:: Marking multiline chunks with a text property.
847 * Region to Refontify:: Controlling which region gets refontified
848 after a buffer change.
849
850 Documentation
851
852 * Documentation Basics:: Good style for doc strings.
853 Where to put them. How Emacs stores them.
854 * Accessing Documentation:: How Lisp programs can access doc strings.
855 * Keys in Documentation:: Substituting current key bindings.
856 * Describing Characters:: Making printable descriptions of
857 non-printing characters and key sequences.
858 * Help Functions:: Subroutines used by Emacs help facilities.
859
860 Files
861
862 * Visiting Files:: Reading files into Emacs buffers for editing.
863 * Saving Buffers:: Writing changed buffers back into files.
864 * Reading from Files:: Reading files into buffers without visiting.
865 * Writing to Files:: Writing new files from parts of buffers.
866 * File Locks:: Locking and unlocking files, to prevent
867 simultaneous editing by two people.
868 * Information about Files:: Testing existence, accessibility, size of files.
869 * Changing Files:: Renaming files, changing protection, etc.
870 * File Names:: Decomposing and expanding file names.
871 * Contents of Directories:: Getting a list of the files in a directory.
872 * Create/Delete Dirs:: Creating and Deleting Directories.
873 * Magic File Names:: Defining "magic" special handling
874 for certain file names.
875 * Format Conversion:: Conversion to and from various file formats.
876
877 Visiting Files
878
879 * Visiting Functions:: The usual interface functions for visiting.
880 * Subroutines of Visiting:: Lower-level subroutines that they use.
881
882 Information about Files
883
884 * Testing Accessibility:: Is a given file readable? Writable?
885 * Kinds of Files:: Is it a directory? A symbolic link?
886 * Truenames:: Eliminating symbolic links from a file name.
887 * File Attributes:: How large is it? Any other names? Etc.
888 * Locating Files:: How to find a file in standard places.
889
890 File Names
891
892 * File Name Components:: The directory part of a file name, and the rest.
893 * Relative File Names:: Some file names are relative to a current directory.
894 * Directory Names:: A directory's name as a directory
895 is different from its name as a file.
896 * File Name Expansion:: Converting relative file names to absolute ones.
897 * Unique File Names:: Generating names for temporary files.
898 * File Name Completion:: Finding the completions for a given file name.
899 * Standard File Names:: If your package uses a fixed file name,
900 how to handle various operating systems simply.
901
902 File Format Conversion
903
904 * Format Conversion Overview:: @code{insert-file-contents} and @code{write-region}.
905 * Format Conversion Round-Trip:: Using @code{format-alist}.
906 * Format Conversion Piecemeal:: Specifying non-paired conversion.
907
908 Backups and Auto-Saving
909
910 * Backup Files:: How backup files are made; how their names
911 are chosen.
912 * Auto-Saving:: How auto-save files are made; how their
913 names are chosen.
914 * Reverting:: @code{revert-buffer}, and how to customize
915 what it does.
916
917 Backup Files
918
919 * Making Backups:: How Emacs makes backup files, and when.
920 * Rename or Copy:: Two alternatives: renaming the old file
921 or copying it.
922 * Numbered Backups:: Keeping multiple backups for each source file.
923 * Backup Names:: How backup file names are computed; customization.
924
925 Buffers
926
927 * Buffer Basics:: What is a buffer?
928 * Current Buffer:: Designating a buffer as current
929 so that primitives will access its contents.
930 * Buffer Names:: Accessing and changing buffer names.
931 * Buffer File Name:: The buffer file name indicates which file
932 is visited.
933 * Buffer Modification:: A buffer is @dfn{modified} if it needs to be saved.
934 * Modification Time:: Determining whether the visited file was changed
935 ``behind Emacs's back''.
936 * Read Only Buffers:: Modifying text is not allowed in a
937 read-only buffer.
938 * The Buffer List:: How to look at all the existing buffers.
939 * Creating Buffers:: Functions that create buffers.
940 * Killing Buffers:: Buffers exist until explicitly killed.
941 * Indirect Buffers:: An indirect buffer shares text with some
942 other buffer.
943 * Swapping Text:: Swapping text between two buffers.
944 * Buffer Gap:: The gap in the buffer.
945
946 Windows
947
948 * Basic Windows:: Basic information on using windows.
949 * Splitting Windows:: Splitting one window into two windows.
950 * Deleting Windows:: Deleting a window gives its space to other windows.
951 * Selecting Windows:: The selected window is the one that you edit in.
952 * Cyclic Window Ordering:: Moving around the existing windows.
953 * Buffers and Windows:: Each window displays the contents of a buffer.
954 * Switching Buffers:: Higher-level functions for switching to a buffer.
955 * Choosing Window:: How to choose a window for displaying a buffer.
956 * Display Action Functions:: Subroutines for @code{display-buffer}.
957 * Choosing Window Options:: Extra options affecting how buffers are displayed.
958 * Window History:: Each window remembers the buffers displayed in it.
959 * Dedicated Windows:: How to avoid displaying another buffer in
960 a specific window.
961 * Window Point:: Each window has its own location of point.
962 * Window Start and End:: Buffer positions indicating which text is
963 on-screen in a window.
964 * Textual Scrolling:: Moving text up and down through the window.
965 * Vertical Scrolling:: Moving the contents up and down on the window.
966 * Horizontal Scrolling:: Moving the contents sideways on the window.
967 * Size of Window:: Accessing the size of a window.
968 * Resizing Windows:: Changing the size of a window.
969 * Coordinates and Windows:: Converting coordinates to windows.
970 * Window Tree:: The layout and sizes of all windows in a frame.
971 * Window Configurations:: Saving and restoring the state of the screen.
972 * Window Parameters:: Associating additional information with windows.
973 * Window Hooks:: Hooks for scrolling, window size changes,
974 redisplay going past a certain point,
975 or window configuration changes.
976
977 Frames
978
979 * Creating Frames:: Creating additional frames.
980 * Multiple Terminals:: Displaying on several different devices.
981 * Frame Parameters:: Controlling frame size, position, font, etc.
982 * Terminal Parameters:: Parameters common for all frames on terminal.
983 * Frame Titles:: Automatic updating of frame titles.
984 * Deleting Frames:: Frames last until explicitly deleted.
985 * Finding All Frames:: How to examine all existing frames.
986 * Frames and Windows:: A frame contains windows;
987 display of text always works through windows.
988 * Minibuffers and Frames:: How a frame finds the minibuffer to use.
989 * Input Focus:: Specifying the selected frame.
990 * Visibility of Frames:: Frames may be visible or invisible, or icons.
991 * Raising and Lowering:: Raising a frame makes it hide other windows;
992 lowering it makes the others hide it.
993 * Frame Configurations:: Saving the state of all frames.
994 * Mouse Tracking:: Getting events that say when the mouse moves.
995 * Mouse Position:: Asking where the mouse is, or moving it.
996 * Pop-Up Menus:: Displaying a menu for the user to select from.
997 * Dialog Boxes:: Displaying a box to ask yes or no.
998 * Pointer Shape:: Specifying the shape of the mouse pointer.
999 * Window System Selections::Transferring text to and from other X clients.
1000 * Drag and Drop:: Internals of Drag-and-Drop implementation.
1001 * Color Names:: Getting the definitions of color names.
1002 * Text Terminal Colors:: Defining colors for text-only terminals.
1003 * Resources:: Getting resource values from the server.
1004 * Display Feature Testing:: Determining the features of a terminal.
1005
1006 Frame Parameters
1007
1008 * Parameter Access:: How to change a frame's parameters.
1009 * Initial Parameters:: Specifying frame parameters when you make a frame.
1010 * Window Frame Parameters:: List of frame parameters for window systems.
1011 * Size and Position:: Changing the size and position of a frame.
1012 * Geometry:: Parsing geometry specifications.
1013
1014 Window Frame Parameters
1015
1016 * Basic Parameters:: Parameters that are fundamental.
1017 * Position Parameters:: The position of the frame on the screen.
1018 * Size Parameters:: Frame's size.
1019 * Layout Parameters:: Size of parts of the frame, and
1020 enabling or disabling some parts.
1021 * Buffer Parameters:: Which buffers have been or should be shown.
1022 * Management Parameters:: Communicating with the window manager.
1023 * Cursor Parameters:: Controlling the cursor appearance.
1024 * Font and Color Parameters:: Fonts and colors for the frame text.
1025
1026 Positions
1027
1028 * Point:: The special position where editing takes place.
1029 * Motion:: Changing point.
1030 * Excursions:: Temporary motion and buffer changes.
1031 * Narrowing:: Restricting editing to a portion of the buffer.
1032
1033 Motion
1034
1035 * Character Motion:: Moving in terms of characters.
1036 * Word Motion:: Moving in terms of words.
1037 * Buffer End Motion:: Moving to the beginning or end of the buffer.
1038 * Text Lines:: Moving in terms of lines of text.
1039 * Screen Lines:: Moving in terms of lines as displayed.
1040 * List Motion:: Moving by parsing lists and sexps.
1041 * Skipping Characters:: Skipping characters belonging to a certain set.
1042
1043 Markers
1044
1045 * Overview of Markers:: The components of a marker, and how it relocates.
1046 * Predicates on Markers:: Testing whether an object is a marker.
1047 * Creating Markers:: Making empty markers or markers at certain places.
1048 * Information from Markers::Finding the marker's buffer or character position.
1049 * Marker Insertion Types:: Two ways a marker can relocate when you
1050 insert where it points.
1051 * Moving Markers:: Moving the marker to a new buffer or position.
1052 * The Mark:: How "the mark" is implemented with a marker.
1053 * The Region:: How to access "the region".
1054
1055 Text
1056
1057 * Near Point:: Examining text in the vicinity of point.
1058 * Buffer Contents:: Examining text in a general fashion.
1059 * Comparing Text:: Comparing substrings of buffers.
1060 * Insertion:: Adding new text to a buffer.
1061 * Commands for Insertion:: User-level commands to insert text.
1062 * Deletion:: Removing text from a buffer.
1063 * User-Level Deletion:: User-level commands to delete text.
1064 * The Kill Ring:: Where removed text sometimes is saved for
1065 later use.
1066 * Undo:: Undoing changes to the text of a buffer.
1067 * Maintaining Undo:: How to enable and disable undo information.
1068 How to control how much information is kept.
1069 * Filling:: Functions for explicit filling.
1070 * Margins:: How to specify margins for filling commands.
1071 * Adaptive Fill:: Adaptive Fill mode chooses a fill prefix
1072 from context.
1073 * Auto Filling:: How auto-fill mode is implemented to break lines.
1074 * Sorting:: Functions for sorting parts of the buffer.
1075 * Columns:: Computing horizontal positions, and using them.
1076 * Indentation:: Functions to insert or adjust indentation.
1077 * Case Changes:: Case conversion of parts of the buffer.
1078 * Text Properties:: Assigning Lisp property lists to text characters.
1079 * Substitution:: Replacing a given character wherever it appears.
1080 * Transposition:: Swapping two portions of a buffer.
1081 * Registers:: How registers are implemented. Accessing
1082 the text or position stored in a register.
1083 * Base 64:: Conversion to or from base 64 encoding.
1084 * MD5 Checksum:: Compute the MD5 "message digest"/"checksum".
1085 * Atomic Changes:: Installing several buffer changes "atomically".
1086 * Change Hooks:: Supplying functions to be run when text is changed.
1087
1088 The Kill Ring
1089
1090 * Kill Ring Concepts:: What text looks like in the kill ring.
1091 * Kill Functions:: Functions that kill text.
1092 * Yanking:: How yanking is done.
1093 * Yank Commands:: Commands that access the kill ring.
1094 * Low-Level Kill Ring:: Functions and variables for kill ring access.
1095 * Internals of Kill Ring:: Variables that hold kill ring data.
1096
1097 Indentation
1098
1099 * Primitive Indent:: Functions used to count and insert indentation.
1100 * Mode-Specific Indent:: Customize indentation for different modes.
1101 * Region Indent:: Indent all the lines in a region.
1102 * Relative Indent:: Indent the current line based on previous lines.
1103 * Indent Tabs:: Adjustable, typewriter-like tab stops.
1104 * Motion by Indent:: Move to first non-blank character.
1105
1106 Text Properties
1107
1108 * Examining Properties:: Looking at the properties of one character.
1109 * Changing Properties:: Setting the properties of a range of text.
1110 * Property Search:: Searching for where a property changes value.
1111 * Special Properties:: Particular properties with special meanings.
1112 * Format Properties:: Properties for representing formatting of text.
1113 * Sticky Properties:: How inserted text gets properties from
1114 neighboring text.
1115 * Lazy Properties:: Computing text properties in a lazy fashion
1116 only when text is examined.
1117 * Clickable Text:: Using text properties to make regions of text
1118 do something when you click on them.
1119 * Fields:: The @code{field} property defines
1120 fields within the buffer.
1121 * Not Intervals:: Why text properties do not use
1122 Lisp-visible text intervals.
1123
1124 Non-@acronym{ASCII} Characters
1125
1126 * Text Representations:: How Emacs represents text.
1127 * Converting Representations:: Converting unibyte to multibyte and vice versa.
1128 * Selecting a Representation:: Treating a byte sequence as unibyte or multi.
1129 * Character Codes:: How unibyte and multibyte relate to
1130 codes of individual characters.
1131 * Character Properties:: Character attributes that define their
1132 behavior and handling.
1133 * Character Sets:: The space of possible character codes
1134 is divided into various character sets.
1135 * Scanning Charsets:: Which character sets are used in a buffer?
1136 * Translation of Characters:: Translation tables are used for conversion.
1137 * Coding Systems:: Coding systems are conversions for saving files.
1138 * Input Methods:: Input methods allow users to enter various
1139 non-ASCII characters without special keyboards.
1140 * Locales:: Interacting with the POSIX locale.
1141
1142 Coding Systems
1143
1144 * Coding System Basics:: Basic concepts.
1145 * Encoding and I/O:: How file I/O functions handle coding systems.
1146 * Lisp and Coding Systems:: Functions to operate on coding system names.
1147 * User-Chosen Coding Systems:: Asking the user to choose a coding system.
1148 * Default Coding Systems:: Controlling the default choices.
1149 * Specifying Coding Systems:: Requesting a particular coding system
1150 for a single file operation.
1151 * Explicit Encoding:: Encoding or decoding text without doing I/O.
1152 * Terminal I/O Encoding:: Use of encoding for terminal I/O.
1153 * MS-DOS File Types:: How DOS "text" and "binary" files
1154 relate to coding systems.
1155
1156 Searching and Matching
1157
1158 * String Search:: Search for an exact match.
1159 * Searching and Case:: Case-independent or case-significant searching.
1160 * Regular Expressions:: Describing classes of strings.
1161 * Regexp Search:: Searching for a match for a regexp.
1162 * POSIX Regexps:: Searching POSIX-style for the longest match.
1163 * Match Data:: Finding out which part of the text matched,
1164 after a string or regexp search.
1165 * Search and Replace:: Commands that loop, searching and replacing.
1166 * Standard Regexps:: Useful regexps for finding sentences, pages,...
1167
1168 Regular Expressions
1169
1170 * Syntax of Regexps:: Rules for writing regular expressions.
1171 * Regexp Example:: Illustrates regular expression syntax.
1172 * Regexp Functions:: Functions for operating on regular expressions.
1173
1174 Syntax of Regular Expressions
1175
1176 * Regexp Special:: Special characters in regular expressions.
1177 * Char Classes:: Character classes used in regular expressions.
1178 * Regexp Backslash:: Backslash-sequences in regular expressions.
1179
1180 The Match Data
1181
1182 * Replacing Match:: Replacing a substring that was matched.
1183 * Simple Match Data:: Accessing single items of match data,
1184 such as where a particular subexpression started.
1185 * Entire Match Data:: Accessing the entire match data at once, as a list.
1186 * Saving Match Data:: Saving and restoring the match data.
1187
1188 Syntax Tables
1189
1190 * Syntax Basics:: Basic concepts of syntax tables.
1191 * Syntax Descriptors:: How characters are classified.
1192 * Syntax Table Functions:: How to create, examine and alter syntax tables.
1193 * Syntax Properties:: Overriding syntax with text properties.
1194 * Motion and Syntax:: Moving over characters with certain syntaxes.
1195 * Parsing Expressions:: Parsing balanced expressions
1196 using the syntax table.
1197 * Standard Syntax Tables:: Syntax tables used by various major modes.
1198 * Syntax Table Internals:: How syntax table information is stored.
1199 * Categories:: Another way of classifying character syntax.
1200
1201 Syntax Descriptors
1202
1203 * Syntax Class Table:: Table of syntax classes.
1204 * Syntax Flags:: Additional flags each character can have.
1205
1206 Parsing Expressions
1207
1208 * Motion via Parsing:: Motion functions that work by parsing.
1209 * Position Parse:: Determining the syntactic state of a position.
1210 * Parser State:: How Emacs represents a syntactic state.
1211 * Low-Level Parsing:: Parsing across a specified region.
1212 * Control Parsing:: Parameters that affect parsing.
1213
1214 Abbrevs and Abbrev Expansion
1215
1216 * Abbrev Mode:: Setting up Emacs for abbreviation.
1217 * Abbrev Tables:: Creating and working with abbrev tables.
1218 * Defining Abbrevs:: Specifying abbreviations and their expansions.
1219 * Abbrev Files:: Saving abbrevs in files.
1220 * Abbrev Expansion:: Controlling expansion; expansion subroutines.
1221 * Standard Abbrev Tables:: Abbrev tables used by various major modes.
1222 * Abbrev Properties:: How to read and set abbrev properties.
1223 Which properties have which effect.
1224 * Abbrev Table Properties:: How to read and set abbrev table properties.
1225 Which properties have which effect.
1226
1227 Processes
1228
1229 * Subprocess Creation:: Functions that start subprocesses.
1230 * Shell Arguments:: Quoting an argument to pass it to a shell.
1231 * Synchronous Processes:: Details of using synchronous subprocesses.
1232 * Asynchronous Processes:: Starting up an asynchronous subprocess.
1233 * Deleting Processes:: Eliminating an asynchronous subprocess.
1234 * Process Information:: Accessing run-status and other attributes.
1235 * Input to Processes:: Sending input to an asynchronous subprocess.
1236 * Signals to Processes:: Stopping, continuing or interrupting
1237 an asynchronous subprocess.
1238 * Output from Processes:: Collecting output from an asynchronous subprocess.
1239 * Sentinels:: Sentinels run when process run-status changes.
1240 * Query Before Exit:: Whether to query if exiting will kill a process.
1241 * System Processes:: Accessing other processes running on your system.
1242 * Transaction Queues:: Transaction-based communication with subprocesses.
1243 * Network:: Opening network connections.
1244 * Network Servers:: Network servers let Emacs accept net connections.
1245 * Datagrams:: UDP network connections.
1246 * Low-Level Network:: Lower-level but more general function
1247 to create connections and servers.
1248 * Misc Network:: Additional relevant functions for
1249 network connections.
1250 * Serial Ports:: Communicating with serial ports.
1251 * Byte Packing:: Using bindat to pack and unpack binary data.
1252
1253 Receiving Output from Processes
1254
1255 * Process Buffers:: If no filter, output is put in a buffer.
1256 * Filter Functions:: Filter functions accept output from the process.
1257 * Decoding Output:: Filters can get unibyte or multibyte strings.
1258 * Accepting Output:: How to wait until process output arrives.
1259
1260 Low-Level Network Access
1261
1262 * Network Processes:: Using @code{make-network-process}.
1263 * Network Options:: Further control over network connections.
1264 * Network Feature Testing:: Determining which network features work on
1265 the machine you are using.
1266
1267 Packing and Unpacking Byte Arrays
1268
1269 * Bindat Spec:: Describing data layout.
1270 * Bindat Functions:: Doing the unpacking and packing.
1271 * Bindat Examples:: Samples of what bindat.el can do for you!
1272
1273 Emacs Display
1274
1275 * Refresh Screen:: Clearing the screen and redrawing everything on it.
1276 * Forcing Redisplay:: Forcing redisplay.
1277 * Truncation:: Folding or wrapping long text lines.
1278 * The Echo Area:: Displaying messages at the bottom of the screen.
1279 * Warnings:: Displaying warning messages for the user.
1280 * Invisible Text:: Hiding part of the buffer text.
1281 * Selective Display:: Hiding part of the buffer text (the old way).
1282 * Temporary Displays:: Displays that go away automatically.
1283 * Overlays:: Use overlays to highlight parts of the buffer.
1284 * Width:: How wide a character or string is on the screen.
1285 * Line Height:: Controlling the height of lines.
1286 * Faces:: A face defines a graphics style
1287 for text characters: font, colors, etc.
1288 * Fringes:: Controlling window fringes.
1289 * Scroll Bars:: Controlling vertical scroll bars.
1290 * Display Property:: Enabling special display features.
1291 * Images:: Displaying images in Emacs buffers.
1292 * Buttons:: Adding clickable buttons to Emacs buffers.
1293 * Abstract Display:: Emacs' Widget for Object Collections.
1294 * Blinking:: How Emacs shows the matching open parenthesis.
1295 * Usual Display:: The usual conventions for displaying
1296 nonprinting chars.
1297 * Display Tables:: How to specify other conventions.
1298 * Beeping:: Audible signal to the user.
1299 * Window Systems:: Which window system is being used.
1300 * Bidirectional Display:: Display of bidirectional scripts, such as
1301 Arabic and Farsi.
1302 * Glyphless Chars:: How glyphless characters are drawn.
1303
1304 The Echo Area
1305
1306 * Displaying Messages:: Explicitly displaying text in the echo area.
1307 * Progress:: Informing user about progress of a long operation.
1308 * Logging Messages:: Echo area messages are logged for the user.
1309 * Echo Area Customization:: Controlling the echo area.
1310
1311 Reporting Warnings
1312
1313 * Warning Basics:: Warnings concepts and functions to report them.
1314 * Warning Variables:: Variables programs bind to customize
1315 their warnings.
1316 * Warning Options:: Variables users set to control display of warnings.
1317
1318 Overlays
1319
1320 * Managing Overlays:: Creating and moving overlays.
1321 * Overlay Properties:: How to read and set properties.
1322 What properties do to the screen display.
1323 * Finding Overlays:: Searching for overlays.
1324
1325 Faces
1326
1327 * Defining Faces:: How to define a face with @code{defface}.
1328 * Face Attributes:: What is in a face?
1329 * Attribute Functions:: Functions to examine and set face attributes.
1330 * Displaying Faces:: How Emacs combines the faces specified for
1331 a character.
1332 * Face Remapping:: Remapping faces to alternative definitions.
1333 * Face Functions:: How to define and examine faces.
1334 * Auto Faces:: Hook for automatic face assignment.
1335 * Basic Faces:: Faces that are defined by default.
1336 * Font Selection:: Finding the best available font for a face.
1337 * Font Lookup:: Looking up the names of available fonts
1338 and information about them.
1339 * Fontsets:: A fontset is a collection of fonts
1340 that handle a range of character sets.
1341 * Low-Level Font:: Lisp representation for character display fonts.
1342
1343 Fringes
1344
1345 * Fringe Size/Pos:: Specifying where to put the window fringes.
1346 * Fringe Indicators:: Displaying indicator icons in the window fringes.
1347 * Fringe Cursors:: Displaying cursors in the right fringe.
1348 * Fringe Bitmaps:: Specifying bitmaps for fringe indicators.
1349 * Customizing Bitmaps:: Specifying your own bitmaps to use in the fringes.
1350 * Overlay Arrow:: Display of an arrow to indicate position.
1351
1352 The @code{display} Property
1353
1354 * Replacing Specs:: Display specs that replace the text.
1355 * Specified Space:: Displaying one space with a specified width.
1356 * Pixel Specification:: Specifying space width or height in pixels.
1357 * Other Display Specs:: Displaying an image; adjusting the height,
1358 spacing, and other properties of text.
1359 * Display Margins:: Displaying text or images to the side of
1360 the main text.
1361
1362 Images
1363
1364 * Image Formats:: Supported image formats.
1365 * Image Descriptors:: How to specify an image for use in @code{:display}.
1366 * XBM Images:: Special features for XBM format.
1367 * XPM Images:: Special features for XPM format.
1368 * GIF Images:: Special features for GIF format.
1369 * TIFF Images:: Special features for TIFF format.
1370 * PostScript Images:: Special features for PostScript format.
1371 * Other Image Types:: Various other formats are supported.
1372 * Defining Images:: Convenient ways to define an image for later use.
1373 * Showing Images:: Convenient ways to display an image once
1374 it is defined.
1375 * Image Cache:: Internal mechanisms of image display.
1376
1377 Buttons
1378
1379 * Button Properties:: Button properties with special meanings.
1380 * Button Types:: Defining common properties for classes of buttons.
1381 * Making Buttons:: Adding buttons to Emacs buffers.
1382 * Manipulating Buttons:: Getting and setting properties of buttons.
1383 * Button Buffer Commands:: Buffer-wide commands and bindings for buttons.
1384
1385 Abstract Display
1386
1387 * Abstract Display Functions:: Functions in the Ewoc package.
1388 * Abstract Display Example:: Example of using Ewoc.
1389
1390 Display Tables
1391
1392 * Display Table Format:: What a display table consists of.
1393 * Active Display Table:: How Emacs selects a display table to use.
1394 * Glyphs:: How to define a glyph, and what glyphs mean.
1395
1396 Operating System Interface
1397
1398 * Starting Up:: Customizing Emacs startup processing.
1399 * Getting Out:: How exiting works (permanent or temporary).
1400 * System Environment:: Distinguish the name and kind of system.
1401 * User Identification:: Finding the name and user id of the user.
1402 * Time of Day:: Getting the current time.
1403 * Time Conversion:: Converting a time from numeric form to
1404 calendrical data and vice versa.
1405 * Time Parsing:: Converting a time from numeric form to text
1406 and vice versa.
1407 * Processor Run Time:: Getting the run time used by Emacs.
1408 * Time Calculations:: Adding, subtracting, comparing times, etc.
1409 * Timers:: Setting a timer to call a function at a
1410 certain time.
1411 * Idle Timers:: Setting a timer to call a function when Emacs has
1412 been idle for a certain length of time.
1413 * Terminal Input:: Accessing and recording terminal input.
1414 * Terminal Output:: Controlling and recording terminal output.
1415 * Sound Output:: Playing sounds on the computer's speaker.
1416 * X11 Keysyms:: Operating on key symbols for X Windows.
1417 * Batch Mode:: Running Emacs without terminal interaction.
1418 * Session Management:: Saving and restoring state with
1419 X Session Management.
1420
1421 Preparing Lisp code for distribution
1422
1423 * Packaging Basics:: The basic concepts of Emacs Lisp packages.
1424 * Simple Packages:: How to package a single .el file.
1425 * Multi-file Packages:: How to package multiple files.
1426
1427 Starting Up Emacs
1428
1429 * Startup Summary:: Sequence of actions Emacs performs at startup.
1430 * Init File:: Details on reading the init file.
1431 * Terminal-Specific:: How the terminal-specific Lisp file is read.
1432 * Command-Line Arguments:: How command-line arguments are processed,
1433 and how you can customize them.
1434
1435 Getting Out of Emacs
1436
1437 * Killing Emacs:: Exiting Emacs irreversibly.
1438 * Suspending Emacs:: Exiting Emacs reversibly.
1439
1440 Terminal Input
1441
1442 * Input Modes:: Options for how input is processed.
1443 * Recording Input:: Saving histories of recent or all input events.
1444
1445 Tips and Conventions
1446
1447 * Coding Conventions:: Conventions for clean and robust programs.
1448 * Key Binding Conventions:: Which keys should be bound by which programs.
1449 * Programming Tips:: Making Emacs code fit smoothly in Emacs.
1450 * Compilation Tips:: Making compiled code run fast.
1451 * Warning Tips:: Turning off compiler warnings.
1452 * Documentation Tips:: Writing readable documentation strings.
1453 * Comment Tips:: Conventions for writing comments.
1454 * Library Headers:: Standard headers for library packages.
1455
1456 GNU Emacs Internals
1457
1458 * Building Emacs:: How the dumped Emacs is made.
1459 * Pure Storage:: Kludge to make preloaded Lisp functions shareable.
1460 * Garbage Collection:: Reclaiming space for Lisp objects no longer used.
1461 * Memory Usage:: Info about total size of Lisp objects made so far.
1462 * Writing Emacs Primitives:: Writing C code for Emacs.
1463 * Object Internals:: Data formats of buffers, windows, processes.
1464
1465 Object Internals
1466
1467 * Buffer Internals:: Components of a buffer structure.
1468 * Window Internals:: Components of a window structure.
1469 * Process Internals:: Components of a process structure.
1470 @end detailmenu
1471 @end menu
1472
1473 @include intro.texi
1474 @include objects.texi
1475 @include numbers.texi
1476 @include strings.texi
1477
1478 @include lists.texi
1479 @include sequences.texi
1480 @include hash.texi
1481 @include symbols.texi
1482 @include eval.texi
1483
1484 @include control.texi
1485 @include variables.texi
1486 @include functions.texi
1487 @include macros.texi
1488
1489 @include customize.texi
1490 @include loading.texi
1491 @include compile.texi
1492 @include advice.texi
1493
1494 @c This includes edebug.texi.
1495 @include debugging.texi
1496 @include streams.texi
1497 @include minibuf.texi
1498 @include commands.texi
1499
1500 @include keymaps.texi
1501 @include modes.texi
1502 @include help.texi
1503 @include files.texi
1504
1505 @include backups.texi
1506
1507 @c ================ Beginning of Volume 2 ================
1508 @c include buffers.texi
1509 @c include windows.texi
1510 @c include frames.texi
1511
1512 @c include positions.texi
1513 @c include markers.texi
1514 @c include text.texi
1515 @c include nonascii.texi
1516
1517 @c include searching.texi
1518 @c include syntax.texi
1519 @c include abbrevs.texi
1520 @c include processes.texi
1521
1522 @c include display.texi
1523 @c include os.texi
1524
1525 @c MOVE to Emacs Manual: include misc-modes.texi
1526
1527 @c appendices
1528
1529 @c REMOVE this: include non-hacker.texi
1530
1531 @c include anti.texi
1532 @c include doclicense.texi
1533 @c include gpl.texi
1534 @c include tips.texi
1535 @c include internals.texi
1536 @c include errors.texi
1537 @c include locals.texi
1538 @c include maps.texi
1539 @c include hooks.texi
1540
1541 @include index.texi
1542
1543 @ignore
1544 @node New Symbols, , Index, Top
1545 @unnumbered New Symbols Since the Previous Edition
1546
1547 @printindex tp
1548 @end ignore
1549
1550 @bye
1551
1552 \f
1553 These words prevent "local variables" above from confusing Emacs.