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1\input texinfo @c -*-texinfo-*-
2@c %**start of header
3@setfilename elisp
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4@settitle GNU Emacs Lisp Reference Manual
5@c %**end of header
6
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7@c Version of the manual and of Emacs.
8@c Please remember to update the edition number in README as well.
d01d5531 9@set VERSION 2.9
6e04fc98 10@set EMACSVER 22.1.50
cdd76925 11
140cc574 12@dircategory Emacs
221fc415 13@direntry
b223e22d 14* Elisp: (elisp). The Emacs Lisp Reference Manual.
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15@end direntry
16
7cc4ec29 17@c in general, keep the following line commented out, unless doing a
7c5b54bb 18@c copy of this manual that will be published. The manual should go
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19@c onto the distribution in the full, 8.5 x 11" size.
20@c set smallbook
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21
22@ifset smallbook
a9f0a989 23@smallbook
cd64b8f1 24@end ifset
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25
26@c per rms and peterb, use 10pt fonts for the main text, mostly to
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27@c save on paper cost.
28@c Do this inside @tex for now, so current makeinfo does not complain.
1f1584d4 29@tex
cd64b8f1 30@ifset smallbook
1f1584d4 31@fonttextsize 10
7c5b54bb 32@set EMACSVER 22.1
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33\global\let\urlcolor=\Black % don't print links in grayscale
34\global\let\linkcolor=\Black
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35@end ifset
36\global\hbadness=6666 % don't worry about not-too-underfull boxes
1f1584d4 37@end tex
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38
39@c Combine indices.
40@synindex cp fn
41@syncodeindex vr fn
42@syncodeindex ky fn
43@syncodeindex pg fn
44@c We use the "type index" to index new functions and variables.
45@c @syncodeindex tp fn
a9f0a989 46
9d7d543c 47@copying
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48This is edition @value{VERSION} of the GNU Emacs Lisp Reference Manual,@*
49corresponding to Emacs version @value{EMACSVER}.
a44af9f2 50
b223e22d 51Copyright @copyright{} 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1998,
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521999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007 Free Software
53Foundation, Inc.
a44af9f2 54
9d7d543c 55@quotation
a4776185 56Permission is granted to copy, distribute and/or modify this document
7260457b 57under the terms of the GNU Free Documentation License, Version 1.2 or
a4776185 58any later version published by the Free Software Foundation; with the
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59Invariant Sections being ``GNU General Public License,'' with the
60Front-Cover texts being ``A GNU Manual,'' and with the Back-Cover
9d7d543c 61Texts as in (a) below. A copy of the license is included in the
13cad738 62section entitled ``GNU Free Documentation License.''
a4776185 63
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64(a) The FSF's Back-Cover Text is: ``You are free to copy and modify
65this GNU Manual. Buying copies from GNU Press supports the FSF in
66developing GNU and promoting software freedom.''
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67@end quotation
68@end copying
a44af9f2 69
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70@titlepage
71@title GNU Emacs Lisp Reference Manual
ccf9222c 72@subtitle For Emacs Version @value{EMACSVER}
cd64b8f1 73@subtitle Revision @value{VERSION}, April 2007
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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
9d7d543c 79@insertcopying
a44af9f2 80
7cc4ec29 81@sp 2
a44af9f2 82Published by the Free Software Foundation @*
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8351 Franklin St, Fifth Floor @*
84Boston, MA 02110-1301 @*
85USA @*
1e24a34b 86ISBN 1-882114-74-4
a44af9f2 87
7cc4ec29 88@sp 2
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89Cover art by Etienne Suvasa.
90@end titlepage
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91
92
93@c Print the tables of contents
94@summarycontents
95@contents
96
a44af9f2 97
ccf9222c 98@ifnottex
e4a29e5a 99@node Top, Introduction, (dir), (dir)
ca4f55bf 100@top Emacs Lisp
a44af9f2 101
cdd76925 102This Info file contains edition @value{VERSION} of the GNU Emacs Lisp
ccf9222c 103Reference Manual, corresponding to GNU Emacs version @value{EMACSVER}.
37680279 104@end ifnottex
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105
106@menu
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107* Introduction:: Introduction and conventions used.
108
3e099569 109* Lisp Data Types:: Data types of objects in Emacs Lisp.
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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.
8241495d 116* Hash Tables:: Very fast lookup-tables.
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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.
f9f59935 125* Customization:: Writing customization declarations.
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126
127* Loading:: Reading files of Lisp code into Lisp.
128* Byte Compilation:: Compilation makes programs run faster.
cc236dfe 129* Advising Functions:: Adding to the definition of a function.
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130* Debugging:: Tools and tips for debugging Lisp programs.
131
3e099569 132* Read and Print:: Converting Lisp objects to text and back.
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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.
b3486daf 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.
f9f59935 151* Non-ASCII Characters:: Non-ASCII text in buffers and strings.
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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.
a40d4712 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.
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160
161Appendices
162
ccf9222c 163* Antinews:: Info for users downgrading to Emacs 21.
e23a63a5 164* GNU Free Documentation License:: The license for this documentation
879bde83 165* GPL:: Conditions for copying and changing GNU Emacs.
4356e9eb 166* Tips:: Advice and coding conventions for Emacs Lisp.
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167* GNU Emacs Internals:: Building and dumping Emacs;
168 internal data structures.
169* Standard Errors:: List of all error symbols.
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170* Standard Buffer-Local Variables::
171 List of variables buffer-local in all buffers.
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172* Standard Keymaps:: List of standard keymaps.
173* Standard Hooks:: List of standard hook variables.
174
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175* Index:: Index including concepts, functions, variables,
176 and other terms.
177
fdd0ca61 178@ignore
ccf9222c 179* New Symbols:: New functions and variables in Emacs @value{EMACSVER}.
fdd0ca61 180@end ignore
f9f59935 181
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182@c Do NOT modify the following 3 lines! They must have this form to
183@c be correctly identified by `texinfo-multiple-files-update'. In
184@c particular, the detailed menu header line MUST be identical to the
185@c value of `texinfo-master-menu-header'. See texnfo-upd.el.
186
187@detailmenu
188 --- The Detailed Node Listing ---
189 ---------------------------------
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190
191Here are other nodes that are inferiors of those already listed,
192mentioned here so you can get to them in one step:
193
194Introduction
195
196* Caveats:: Flaws and a request for help.
197* Lisp History:: Emacs Lisp is descended from Maclisp.
198* Conventions:: How the manual is formatted.
f3280ac5 199* Version Info:: Which Emacs version is running?
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200* Acknowledgements:: The authors, editors, and sponsors of this manual.
201
202Conventions
203
204* Some Terms:: Explanation of terms we use in this manual.
205* nil and t:: How the symbols @code{nil} and @code{t} are used.
206* Evaluation Notation:: The format we use for examples of evaluation.
207* Printing Notation:: The format we use for examples that print output.
208* Error Messages:: The format we use for examples of errors.
209* Buffer Text Notation:: The format we use for buffer contents in examples.
210* Format of Descriptions:: Notation for describing functions, variables, etc.
211
212Format of Descriptions
213
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214* A Sample Function Description:: A description of an imaginary
215 function, @code{foo}.
216* A Sample Variable Description:: A description of an imaginary
217 variable, @code{electric-future-map}.
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218
219Lisp Data Types
220
221* Printed Representation:: How Lisp objects are represented as text.
222* Comments:: Comments and their formatting conventions.
223* Programming Types:: Types found in all Lisp systems.
224* Editing Types:: Types specific to Emacs.
f3280ac5 225* Circular Objects:: Read syntax for circular structure.
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226* Type Predicates:: Tests related to types.
227* Equality Predicates:: Tests of equality between any two objects.
228
229Programming Types
230
231* Integer Type:: Numbers without fractional parts.
232* Floating Point Type:: Numbers with fractional parts and with a large range.
233* Character Type:: The representation of letters, numbers and
a40d4712 234 control characters.
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235* Symbol Type:: A multi-use object that refers to a function,
236 variable, property list, or itself.
a44af9f2 237* Sequence Type:: Both lists and arrays are classified as sequences.
3e099569 238* Cons Cell Type:: Cons cells, and lists (which are made from cons cells).
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239* Array Type:: Arrays include strings and vectors.
240* String Type:: An (efficient) array of characters.
241* Vector Type:: One-dimensional arrays.
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242* Char-Table Type:: One-dimensional sparse arrays indexed by characters.
243* Bool-Vector Type:: One-dimensional arrays of @code{t} or @code{nil}.
244* Hash Table Type:: Super-fast lookup tables.
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245* Function Type:: A piece of executable code you can call from elsewhere.
246* Macro Type:: A method of expanding an expression into another
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247 expression, more fundamental but less pretty.
248* Primitive Function Type:: A function written in C, callable from Lisp.
249* Byte-Code Type:: A function written in Lisp, then compiled.
250* Autoload Type:: A type used for automatically loading seldom-used
a40d4712 251 functions.
a44af9f2 252
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253Character Type
254
255* Basic Char Syntax:: Syntax for regular characters.
256* General Escape Syntax:: How to specify characters by their codes.
257* Ctl-Char Syntax:: Syntax for control characters.
258* Meta-Char Syntax:: Syntax for meta-characters.
259* Other Char Bits:: Syntax for hyper-, super-, and alt-characters.
260
f3280ac5 261Cons Cell and List Types
a44af9f2 262
f3280ac5 263* Box Diagrams:: Drawing pictures of lists.
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264* Dotted Pair Notation:: An alternative syntax for lists.
265* Association List Type:: A specially constructed list.
266
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267String Type
268
269* Syntax for Strings:: How to specify Lisp strings.
270* Non-ASCII in Strings:: International characters in strings.
271* Nonprinting Characters:: Literal unprintable characters in strings.
272* Text Props and Strings:: Strings with text properties.
273
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274Editing Types
275
276* Buffer Type:: The basic object of editing.
f3280ac5 277* Marker Type:: A position in a buffer.
a44af9f2 278* Window Type:: What makes buffers visible.
f3280ac5 279* Frame Type:: Windows subdivide frames.
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280* Window Configuration Type:: Recording the way a frame is subdivided.
281* Frame Configuration Type:: Recording the status of all frames.
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282* Process Type:: A process running on the underlying OS.
283* Stream Type:: Receive or send characters.
284* Keymap Type:: What function a keystroke invokes.
1911e6e5 285* Overlay Type:: How an overlay is represented.
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286
287Numbers
288
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289* Integer Basics:: Representation and range of integers.
290* Float Basics:: Representation and range of floating point.
291* Predicates on Numbers:: Testing for numbers.
292* Comparison of Numbers:: Equality and inequality predicates.
293* Numeric Conversions:: Converting float to integer and vice versa.
294* Arithmetic Operations:: How to add, subtract, multiply and divide.
295* Rounding Operations:: Explicitly rounding floating point numbers.
296* Bitwise Operations:: Logical and, or, not, shifting.
297* Math Functions:: Trig, exponential and logarithmic functions.
298* Random Numbers:: Obtaining random integers, predictable or not.
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299
300Strings and Characters
301
302* String Basics:: Basic properties of strings and characters.
303* Predicates for Strings:: Testing whether an object is a string or char.
304* Creating Strings:: Functions to allocate new strings.
f3280ac5 305* Modifying Strings:: Altering the contents of an existing string.
a44af9f2 306* Text Comparison:: Comparing characters or strings.
05d21112 307* String Conversion:: Converting characters to strings and vice versa.
1911e6e5 308* Formatting Strings:: @code{format}: Emacs's analogue of @code{printf}.
a9f0a989 309* Case Conversion:: Case conversion functions.
05d21112 310* Case Tables:: Customizing case conversion.
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311
312Lists
313
314* Cons Cells:: How lists are made out of cons cells.
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315* List-related Predicates:: Is this object a list? Comparing two lists.
316* List Elements:: Extracting the pieces of a list.
317* Building Lists:: Creating list structure.
05d21112 318* List Variables:: Modifying lists stored in variables.
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319* Modifying Lists:: Storing new pieces into an existing list.
320* Sets And Lists:: A list can represent a finite mathematical set.
321* Association Lists:: A list can represent a finite relation or mapping.
b02bc8d0 322* Rings:: Managing a fixed-size ring of objects.
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323
324Modifying Existing List Structure
325
326* Setcar:: Replacing an element in a list.
327* Setcdr:: Replacing part of the list backbone.
328 This can be used to remove or add elements.
329* Rearrangement:: Reordering the elements in a list; combining lists.
330
331Sequences, Arrays, and Vectors
332
333* Sequence Functions:: Functions that accept any kind of sequence.
334* Arrays:: Characteristics of arrays in Emacs Lisp.
335* Array Functions:: Functions specifically for arrays.
05d21112 336* Vectors:: Special characteristics of Emacs Lisp vectors.
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337* Vector Functions:: Functions specifically for vectors.
338* Char-Tables:: How to work with char-tables.
339* Bool-Vectors:: How to work with bool-vectors.
340
341Hash Tables
342
343* Creating Hash:: Functions to create hash tables.
344* Hash Access:: Reading and writing the hash table contents.
345* Defining Hash:: Defining new comparison methods
346* Other Hash:: Miscellaneous.
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347
348Symbols
349
350* Symbol Components:: Symbols have names, values, function definitions
351 and property lists.
352* Definitions:: A definition says how a symbol will be used.
353* Creating Symbols:: How symbols are kept unique.
354* Property Lists:: Each symbol has a property list
355 for recording miscellaneous information.
356
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357Property Lists
358
359* Plists and Alists:: Comparison of the advantages of property
360 lists and association lists.
361* Symbol Plists:: Functions to access symbols' property lists.
362* Other Plists:: Accessing property lists stored elsewhere.
363
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364Evaluation
365
366* Intro Eval:: Evaluation in the scheme of things.
a44af9f2 367* Forms:: How various sorts of objects are evaluated.
177c0ea7 368* Quoting:: Avoiding evaluation (to put constants in
a44af9f2 369 the program).
f3280ac5 370* Eval:: How to invoke the Lisp interpreter explicitly.
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371
372Kinds of Forms
373
374* Self-Evaluating Forms:: Forms that evaluate to themselves.
375* Symbol Forms:: Symbols evaluate as variables.
376* Classifying Lists:: How to distinguish various sorts of list forms.
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377* Function Indirection:: When a symbol appears as the car of a list,
378 we find the real function via the symbol.
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379* Function Forms:: Forms that call functions.
380* Macro Forms:: Forms that call macros.
13cad738 381* Special Forms:: "Special forms" are idiosyncratic primitives,
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382 most of them extremely important.
383* Autoloading:: Functions set up to load files
384 containing their real definitions.
385
386Control Structures
387
388* Sequencing:: Evaluation in textual order.
f3280ac5 389* Conditionals:: @code{if}, @code{cond}, @code{when}, @code{unless}.
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390* Combining Conditions:: @code{and}, @code{or}, @code{not}.
391* Iteration:: @code{while} loops.
392* Nonlocal Exits:: Jumping out of a sequence.
393
394Nonlocal Exits
395
396* Catch and Throw:: Nonlocal exits for the program's own purposes.
397* Examples of Catch:: Showing how such nonlocal exits can be written.
398* Errors:: How errors are signaled and handled.
399* Cleanups:: Arranging to run a cleanup form if an
400 error happens.
401
402Errors
403
404* Signaling Errors:: How to report an error.
405* Processing of Errors:: What Emacs does when you report an error.
406* Handling Errors:: How you can trap errors and continue execution.
3e099569 407* Error Symbols:: How errors are classified for trapping them.
ed4af17b 408* Standard Errors:: List of all error symbols.
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409
410Variables
411
412* Global Variables:: Variable values that exist permanently, everywhere.
413* Constant Variables:: Certain "variables" have values that never change.
414* Local Variables:: Variable values that exist only temporarily.
415* Void Variables:: Symbols that lack values.
416* Defining Variables:: A definition says a symbol is used as a variable.
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417* Tips for Defining:: Things you should think about when you
418 define a variable.
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419* Accessing Variables:: Examining values of variables whose names
420 are known only at run time.
421* Setting Variables:: Storing new values in variables.
422* Variable Scoping:: How Lisp chooses among local and global values.
423* Buffer-Local Variables:: Variable values in effect only in one buffer.
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424* Frame-Local Variables:: Variable values in effect only in one frame.
425* Future Local Variables:: New kinds of local values we might add some day.
f3280ac5 426* File Local Variables:: Handling local variable lists in files.
16ac1559 427* Variable Aliases:: Variables that are aliases for other variables.
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428* Variables with Restricted Values:: Non-constant variables whose value can
429 @emph{not} be an arbitrary Lisp object.
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430* Standard Buffer-Local Variables::
431 List of variables buffer-local in all buffers.
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432
433Scoping Rules for Variable Bindings
434
177c0ea7 435* Scope:: Scope means where in the program a value
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436 is visible. Comparison with other languages.
437* Extent:: Extent means how long in time a value exists.
438* Impl of Scope:: Two ways to implement dynamic scoping.
177c0ea7 439* Using Scoping:: How to use dynamic scoping carefully and
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440 avoid problems.
441
442Buffer-Local Variables
443
444* Intro to Buffer-Local:: Introduction and concepts.
445* Creating Buffer-Local:: Creating and destroying buffer-local bindings.
446* Default Value:: The default value is seen in buffers
cc236dfe 447 that don't have their own buffer-local values.
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448
449Functions
450
451* What Is a Function:: Lisp functions vs primitives; terminology.
452* Lambda Expressions:: How functions are expressed as Lisp objects.
453* Function Names:: A symbol can serve as the name of a function.
454* Defining Functions:: Lisp expressions for defining functions.
455* Calling Functions:: How to use an existing function.
456* Mapping Functions:: Applying a function to each element of a list, etc.
177c0ea7 457* Anonymous Functions:: Lambda-expressions are functions with no names.
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458* Function Cells:: Accessing or setting the function definition
459 of a symbol.
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460* Obsolete Functions:: Declaring functions obsolete.
461* Inline Functions:: Defining functions that the compiler will open code.
462* Function Safety:: Determining whether a function is safe to call.
a44af9f2 463* Related Topics:: Cross-references to specific Lisp primitives
177c0ea7 464 that have a special bearing on how
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465 functions work.
466
467Lambda Expressions
468
469* Lambda Components:: The parts of a lambda expression.
470* Simple Lambda:: A simple example.
471* Argument List:: Details and special features of argument lists.
472* Function Documentation:: How to put documentation in a function.
473
474Macros
475
476* Simple Macro:: A basic example.
477* Expansion:: How, when and why macros are expanded.
478* Compiling Macros:: How macros are expanded by the compiler.
479* Defining Macros:: How to write a macro definition.
480* Backquote:: Easier construction of list structure.
481* Problems with Macros:: Don't evaluate the macro arguments too many times.
482 Don't hide the user's variables.
ca99e358 483* Indenting Macros:: Specifying how to indent macro calls.
a44af9f2 484
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485Common Problems Using Macros
486
487* Wrong Time:: Do the work in the expansion, not in the macro.
488* Argument Evaluation:: The expansion should evaluate each macro arg once.
489* Surprising Local Vars:: Local variable bindings in the expansion
490 require special care.
491* Eval During Expansion:: Don't evaluate them; put them in the expansion.
492* Repeated Expansion:: Avoid depending on how many times expansion is done.
493
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494Writing Customization Definitions
495
496* Common Keywords:: Common keyword arguments for all kinds of
497 customization declarations.
498* Group Definitions:: Writing customization group definitions.
499* Variable Definitions:: Declaring user options.
500* Customization Types:: Specifying the type of a user option.
501
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502Customization Types
503
504* Simple Types:: Simple customization types: sexp, integer, number,
505 string, file, directory, alist.
506* Composite Types:: Build new types from other types or data.
507* Splicing into Lists:: Splice elements into list with @code{:inline}.
508* Type Keywords:: Keyword-argument pairs in a customization type.
509* Defining New Types:: Give your type a name.
510
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511Loading
512
513* How Programs Do Loading:: The @code{load} function and others.
ca4f55bf 514* Load Suffixes:: Details about the suffixes that @code{load} tries.
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515* Library Search:: Finding a library to load.
516* Loading Non-ASCII:: Non-@acronym{ASCII} characters in Emacs Lisp files.
a44af9f2 517* Autoload:: Setting up a function to autoload.
a44af9f2 518* Repeated Loading:: Precautions about loading a file twice.
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519* Named Features:: Loading a library if it isn't already loaded.
520* Where Defined:: Finding which file defined a certain symbol.
13cad738 521* Unloading:: How to "unload" a library that was loaded.
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522* Hooks for Loading:: Providing code to be run when
523 particular libraries are loaded.
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524
525Byte Compilation
526
f3280ac5 527* Speed of Byte-Code:: An example of speedup from byte compilation.
a44af9f2 528* Compilation Functions:: Byte compilation functions.
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529* Docs and Compilation:: Dynamic loading of documentation strings.
530* Dynamic Loading:: Dynamic loading of individual functions.
531* Eval During Compile:: Code to be evaluated when you compile.
532* Compiler Errors:: Handling compiler error messages.
533* Byte-Code Objects:: The data type used for byte-compiled functions.
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534* Disassembly:: Disassembling byte-code; how to read byte-code.
535
f3280ac5 536Advising Emacs Lisp Functions
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537
538* Simple Advice:: A simple example to explain the basics of advice.
539* Defining Advice:: Detailed description of @code{defadvice}.
f3280ac5 540* Around-Advice:: Wrapping advice around a function's definition.
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541* Computed Advice:: ...is to @code{defadvice} as @code{fset} is to @code{defun}.
542* Activation of Advice:: Advice doesn't do anything until you activate it.
543* Enabling Advice:: You can enable or disable each piece of advice.
544* Preactivation:: Preactivation is a way of speeding up the
545 loading of compiled advice.
1911e6e5 546* Argument Access in Advice:: How advice can access the function's arguments.
583abbac 547* Advising Primitives:: Accessing arguments when advising a primitive.
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548* Combined Definition:: How advice is implemented.
549
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550Debugging Lisp Programs
551
552* Debugger:: How the Emacs Lisp debugger is implemented.
f3280ac5 553* Edebug:: A source-level Emacs Lisp debugger.
a44af9f2 554* Syntax Errors:: How to find syntax errors.
f3280ac5 555* Test Coverage:: Ensuring you have tested all branches in your code.
177c0ea7 556* Compilation Errors:: How to find errors that show up in
a44af9f2 557 byte compilation.
177c0ea7 558
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559The Lisp Debugger
560
561* Error Debugging:: Entering the debugger when an error happens.
f3280ac5 562* Infinite Loops:: Stopping and debugging a program that doesn't exit.
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563* Function Debugging:: Entering it when a certain function is called.
564* Explicit Debug:: Entering it at a certain point in the program.
565* Using Debugger:: What the debugger does; what you see while in it.
566* Debugger Commands:: Commands used while in the debugger.
567* Invoking the Debugger:: How to call the function @code{debug}.
568* Internals of Debugger:: Subroutines of the debugger, and global variables.
569
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570Edebug
571
572* Using Edebug:: Introduction to use of Edebug.
573* Instrumenting:: You must instrument your code
574 in order to debug it with Edebug.
575* Edebug Execution Modes:: Execution modes, stopping more or less often.
576* Jumping:: Commands to jump to a specified place.
577* Edebug Misc:: Miscellaneous commands.
67774855 578* Breaks:: Setting breakpoints to make the program stop.
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579* Trapping Errors:: Trapping errors with Edebug.
580* Edebug Views:: Views inside and outside of Edebug.
581* Edebug Eval:: Evaluating expressions within Edebug.
582* Eval List:: Expressions whose values are displayed
583 each time you enter Edebug.
584* Printing in Edebug:: Customization of printing.
585* Trace Buffer:: How to produce trace output in a buffer.
586* Coverage Testing:: How to test evaluation coverage.
587* The Outside Context:: Data that Edebug saves and restores.
67774855 588* Edebug and Macros:: Specifying how to handle macro calls.
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589* Edebug Options:: Option variables for customizing Edebug.
590
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591Debugging Invalid Lisp Syntax
592
593* Excess Open:: How to find a spurious open paren or missing close.
594* Excess Close:: How to find a spurious close paren or missing open.
595
596Reading and Printing Lisp Objects
597
598* Streams Intro:: Overview of streams, reading and printing.
177c0ea7 599* Input Streams:: Various data types that can be used as
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600 input streams.
601* Input Functions:: Functions to read Lisp objects from text.
177c0ea7 602* Output Streams:: Various data types that can be used as
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603 output streams.
604* Output Functions:: Functions to print Lisp objects as text.
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605* Output Variables:: Variables that control what the printing
606 functions do.
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607
608Minibuffers
609
610* Intro to Minibuffers:: Basic information about minibuffers.
611* Text from Minibuffer:: How to read a straight text string.
612* Object from Minibuffer:: How to read a Lisp object or expression.
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613* Minibuffer History:: Recording previous minibuffer inputs
614 so the user can reuse them.
615* Initial Input:: Specifying initial contents for the minibuffer.
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616* Completion:: How to invoke and customize completion.
617* Yes-or-No Queries:: Asking a question with a simple answer.
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618* Multiple Queries:: Asking a series of similar questions.
619* Reading a Password:: Reading a password from the terminal.
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620* Minibuffer Commands:: Commands used as key bindings in minibuffers.
621* Minibuffer Contents:: How such commands access the minibuffer text.
622* Minibuffer Windows:: Operating on the special minibuffer windows.
623* Recursive Mini:: Whether recursive entry to minibuffer is allowed.
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624* Minibuffer Misc:: Various customization hooks and variables.
625
626Completion
627
628* Basic Completion:: Low-level functions for completing strings.
629 (These are too low level to use the minibuffer.)
630* Minibuffer Completion:: Invoking the minibuffer with completion.
631* Completion Commands:: Minibuffer commands that do completion.
632* High-Level Completion:: Convenient special cases of completion
633 (reading buffer name, file name, etc.)
634* Reading File Names:: Using completion to read file names.
635* Programmed Completion:: Finding the completions for a given file name.
636
637Command Loop
638
639* Command Overview:: How the command loop reads commands.
640* Defining Commands:: Specifying how a function should read arguments.
641* Interactive Call:: Calling a command, so that it will read arguments.
642* Command Loop Info:: Variables set by the command loop for you to examine.
f3280ac5 643* Adjusting Point:: Adjustment of point after a command.
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644* Input Events:: What input looks like when you read it.
645* Reading Input:: How to read input events from the keyboard or mouse.
f3280ac5 646* Special Events:: Events processed immediately and individually.
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647* Waiting:: Waiting for user input or elapsed time.
648* Quitting:: How @kbd{C-g} works. How to catch or defer quitting.
649* Prefix Command Arguments:: How the commands to set prefix args work.
650* Recursive Editing:: Entering a recursive edit,
651 and why you usually shouldn't.
652* Disabling Commands:: How the command loop handles disabled commands.
653* Command History:: How the command history is set up, and how accessed.
654* Keyboard Macros:: How keyboard macros are implemented.
655
656Defining Commands
657
658* Using Interactive:: General rules for @code{interactive}.
659* Interactive Codes:: The standard letter-codes for reading arguments
660 in various ways.
661* Interactive Examples:: Examples of how to read interactive arguments.
662
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663Input Events
664
665* Keyboard Events:: Ordinary characters--keys with symbols on them.
666* Function Keys:: Function keys--keys with names, not symbols.
667* Mouse Events:: Overview of mouse events.
668* Click Events:: Pushing and releasing a mouse button.
669* Drag Events:: Moving the mouse before releasing the button.
670* Button-Down Events:: A button was pushed and not yet released.
671* Repeat Events:: Double and triple click (or drag, or down).
672* Motion Events:: Just moving the mouse, not pushing a button.
673* Focus Events:: Moving the mouse between frames.
674* Misc Events:: Other events the system can generate.
675* Event Examples:: Examples of the lists for mouse events.
676* Classifying Events:: Finding the modifier keys in an event symbol.
677* Accessing Events:: Functions to extract info from events.
678* Strings of Events:: Special considerations for putting
679 keyboard character events in a string.
680
681Reading Input
682
683* Key Sequence Input:: How to read one key sequence.
684* Reading One Event:: How to read just one event.
685* Event Mod:: How Emacs modifies events as they are read.
686* Invoking the Input Method:: How reading an event uses the input method.
687* Quoted Character Input:: Asking the user to specify a character.
688* Event Input Misc:: How to reread or throw away input events.
689
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690Keymaps
691
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692* Key Sequences:: Key sequences as Lisp objects.
693* Keymap Basics:: Basic concepts of keymaps.
694* Format of Keymaps:: What a keymap looks like as a Lisp object.
695* Creating Keymaps:: Functions to create and copy keymaps.
696* Inheritance and Keymaps:: How one keymap can inherit the bindings
697 of another keymap.
698* Prefix Keys:: Defining a key with a keymap as its definition.
699* Active Keymaps:: How Emacs searches the active keymaps
700 for a key binding.
701* Searching Keymaps:: A pseudo-Lisp summary of searching active maps.
702* Controlling Active Maps:: Each buffer has a local keymap
703 to override the standard (global) bindings.
704 A minor mode can also override them.
705* Key Lookup:: How extracting elements from keymaps works.
a44af9f2 706* Functions for Key Lookup:: How to request key lookup.
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707* Changing Key Bindings:: Redefining a key in a keymap.
708* Remapping Commands:: A keymap can translate one command to another.
709* Translation Keymaps:: Keymaps for translating sequences of events.
710* Key Binding Commands:: Interactive interfaces for redefining keys.
711* Scanning Keymaps:: Looking through all keymaps, for printing help.
712* Menu Keymaps:: A keymap can define a menu for X
713 or for use from the terminal.
714* Standard Keymaps:: List of standard keymaps.
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715
716Major and Minor Modes
717
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718* Hooks:: How to use hooks; how to write code that
719 provides hooks.
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720* Major Modes:: Defining major modes.
721* Minor Modes:: Defining minor modes.
722* Mode Line Format:: Customizing the text that appears in the mode line.
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723* Imenu:: How a mode can provide a menu
724 of definitions in the buffer.
725* Font Lock Mode:: How modes can highlight text according to syntax.
726* Desktop Save Mode:: How modes can have buffer state saved between
727 Emacs sessions.
a44af9f2 728
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729Menu Keymaps
730
731* Defining Menus:: How to make a keymap that defines a menu.
732* Mouse Menus:: How users actuate the menu with the mouse.
733* Keyboard Menus:: How users actuate the menu with the keyboard.
734* Menu Example:: Making a simple menu.
735* Menu Bar:: How to customize the menu bar.
736* Tool Bar:: A tool bar is a row of images.
737* Modifying Menus:: How to add new items to a menu.
738
739Defining Menus
740
741* Simple Menu Items:: A simple kind of menu key binding,
742 limited in capabilities.
743* Extended Menu Items:: More powerful menu item definitions
744 let you specify keywords to enable
745 various features.
746* Menu Separators:: Drawing a horizontal line through a menu.
747* Alias Menu Items:: Using command aliases in menu items.
748
749Major and Minor Modes
750
751* Hooks:: How to use hooks; how to write code that provides hooks.
752* Major Modes:: Defining major modes.
753* Minor Modes:: Defining minor modes.
754* Mode Line Format:: Customizing the text that appears in the mode line.
755* Imenu:: How a mode can provide a menu
756 of definitions in the buffer.
757* Font Lock Mode:: How modes can highlight text according to syntax.
758* Desktop Save Mode:: How modes can have buffer state saved between
759 Emacs sessions.
760
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761Major Modes
762
049557c2 763* Major Mode Basics::
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764* Major Mode Conventions:: Coding conventions for keymaps, etc.
765* Example Major Modes:: Text mode and Lisp modes.
766* Auto Major Mode:: How Emacs chooses the major mode automatically.
767* Mode Help:: Finding out how to use a mode.
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768* Derived Modes:: Defining a new major mode based on another major
769 mode.
770* Generic Modes:: Defining a simple major mode that supports
771 comment syntax and Font Lock mode.
772* Mode Hooks:: Hooks run at the end of major mode functions.
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773
774Minor Modes
775
776* Minor Mode Conventions:: Tips for writing a minor mode.
777* Keymaps and Minor Modes:: How a minor mode can have its own keymap.
36ad23ec 778* Defining Minor Modes:: A convenient facility for defining minor modes.
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779
780Mode Line Format
781
049557c2 782* Mode Line Basics::
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783* Mode Line Data:: The data structure that controls the mode line.
784* Mode Line Variables:: Variables used in that data structure.
785* %-Constructs:: Putting information into a mode line.
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786* Properties in Mode:: Using text properties in the mode line.
787* Header Lines:: Like a mode line, but at the top.
788* Emulating Mode Line:: Formatting text as the mode line would.
a44af9f2 789
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790Font Lock Mode
791
792* Font Lock Basics:: Overview of customizing Font Lock.
793* Search-based Fontification:: Fontification based on regexps.
794* Customizing Keywords:: Customizing search-based fontification.
795* Other Font Lock Variables:: Additional customization facilities.
796* Levels of Font Lock:: Each mode can define alternative levels
797 so that the user can select more or less.
798* Precalculated Fontification:: How Lisp programs that produce the buffer
799 contents can also specify how to fontify it.
800* Faces for Font Lock:: Special faces specifically for Font Lock.
801* Syntactic Font Lock:: Fontification based on syntax tables.
802* Setting Syntax Properties:: Defining character syntax based on context
803 using the Font Lock mechanism.
804* Multiline Font Lock:: How to coerce Font Lock into properly
805 highlighting multiline constructs.
806
807Multiline Font Lock Constructs
808
809* Font Lock Multiline:: Marking multiline chunks with a text property
810* Region to Fontify:: Controlling which region gets refontified
811 after a buffer change.
812
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813Documentation
814
815* Documentation Basics:: Good style for doc strings.
816 Where to put them. How Emacs stores them.
817* Accessing Documentation:: How Lisp programs can access doc strings.
818* Keys in Documentation:: Substituting current key bindings.
819* Describing Characters:: Making printable descriptions of
820 non-printing characters and key sequences.
821* Help Functions:: Subroutines used by Emacs help facilities.
822
823Files
824
825* Visiting Files:: Reading files into Emacs buffers for editing.
826* Saving Buffers:: Writing changed buffers back into files.
827* Reading from Files:: Reading files into other buffers.
828* Writing to Files:: Writing new files from parts of buffers.
829* File Locks:: Locking and unlocking files, to prevent
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830 simultaneous editing by two people.
831* Information about Files:: Testing existence, accessibility, size of files.
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832* Changing Files:: Renaming files, changing protection, etc.
833* File Names:: Decomposing and expanding file names.
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834* Contents of Directories:: Getting a list of the files in a directory.
835* Create/Delete Dirs:: Creating and Deleting Directories.
836* Magic File Names:: Defining "magic" special handling
837 for certain file names.
838* Format Conversion:: Conversion to and from various file formats.
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839
840Visiting Files
841
842* Visiting Functions:: The usual interface functions for visiting.
843* Subroutines of Visiting:: Lower-level subroutines that they use.
844
845Information about Files
846
847* Testing Accessibility:: Is a given file readable? Writable?
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848* Kinds of Files:: Is it a directory? A symbolic link?
849* Truenames:: Eliminating symbolic links from a file name.
a44af9f2 850* File Attributes:: How large is it? Any other names? Etc.
05d21112 851* Locating Files:: How to find a file in standard places.
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852
853File Names
854
855* File Name Components:: The directory part of a file name, and the rest.
177c0ea7 856* Relative File Names:: Some file names are relative to a
a44af9f2 857 current directory.
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858* Directory Names:: A directory's name as a directory
859 is different from its name as a file.
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860* File Name Expansion:: Converting relative file names to absolute ones.
861* Unique File Names:: Generating names for temporary files.
862* File Name Completion:: Finding the completions for a given file name.
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863* Standard File Names:: If your package uses a fixed file name,
864 how to handle various operating systems simply.
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865
866Backups and Auto-Saving
867
177c0ea7 868* Backup Files:: How backup files are made; how their names
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869 are chosen.
870* Auto-Saving:: How auto-save files are made; how their
871 names are chosen.
177c0ea7 872* Reverting:: @code{revert-buffer}, and how to customize
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873 what it does.
874
875Backup Files
876
877* Making Backups:: How Emacs makes backup files, and when.
177c0ea7 878* Rename or Copy:: Two alternatives: renaming the old file
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879 or copying it.
880* Numbered Backups:: Keeping multiple backups for each source file.
881* Backup Names:: How backup file names are computed; customization.
882
883Buffers
884
885* Buffer Basics:: What is a buffer?
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886* Current Buffer:: Designating a buffer as current
887 so primitives will access its contents.
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888* Buffer Names:: Accessing and changing buffer names.
889* Buffer File Name:: The buffer file name indicates which file
890 is visited.
891* Buffer Modification:: A buffer is @dfn{modified} if it needs to be saved.
892* Modification Time:: Determining whether the visited file was changed
05d21112 893 ``behind Emacs's back''.
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894* Read Only Buffers:: Modifying text is not allowed in a
895 read-only buffer.
896* The Buffer List:: How to look at all the existing buffers.
897* Creating Buffers:: Functions that create buffers.
898* Killing Buffers:: Buffers exist until explicitly killed.
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899* Indirect Buffers:: An indirect buffer shares text with some
900 other buffer.
901* Buffer Gap:: The gap in the buffer.
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902
903Windows
904
905* Basic Windows:: Basic information on using windows.
906* Splitting Windows:: Splitting one window into two windows.
907* Deleting Windows:: Deleting a window gives its space to other windows.
908* Selecting Windows:: The selected window is the one that you edit in.
909* Cyclic Window Ordering:: Moving around the existing windows.
910* Buffers and Windows:: Each window displays the contents of a buffer.
05d21112 911* Displaying Buffers:: Higher-level functions for displaying a buffer
a44af9f2 912 and choosing a window for it.
f3280ac5 913* Choosing Window:: How to choose a window for displaying a buffer.
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914* Window Point:: Each window has its own location of point.
915* Window Start:: The display-start position controls which text
177c0ea7 916 is on-screen in the window.
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917* Textual Scrolling:: Moving text up and down through the window.
918* Vertical Scrolling:: Moving the contents up and down on the window.
919* Horizontal Scrolling:: Moving the contents sideways on the window.
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920* Size of Window:: Accessing the size of a window.
921* Resizing Windows:: Changing the size of a window.
f3280ac5 922* Coordinates and Windows:: Converting coordinates to windows.
05d21112 923* Window Tree:: The layout and sizes of all windows in a frame.
a44af9f2 924* Window Configurations:: Saving and restoring the state of the screen.
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925* Window Hooks:: Hooks for scrolling, window size changes,
926 redisplay going past a certain point,
927 or window configuration changes.
a44af9f2 928
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929Frames
930
931* Creating Frames:: Creating additional frames.
05d21112 932* Multiple Displays:: Creating frames on other displays.
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933* Frame Parameters:: Controlling frame size, position, font, etc.
934* Frame Titles:: Automatic updating of frame titles.
935* Deleting Frames:: Frames last until explicitly deleted.
936* Finding All Frames:: How to examine all existing frames.
937* Frames and Windows:: A frame contains windows;
938 display of text always works through windows.
939* Minibuffers and Frames:: How a frame finds the minibuffer to use.
940* Input Focus:: Specifying the selected frame.
941* Visibility of Frames:: Frames may be visible or invisible, or icons.
05d21112 942* Raising and Lowering:: Raising a frame makes it hide other windows;
1911e6e5 943 lowering it puts it underneath the others.
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944* Frame Configurations:: Saving the state of all frames.
945* Mouse Tracking:: Getting events that say when the mouse moves.
946* Mouse Position:: Asking where the mouse is, or moving it.
947* Pop-Up Menus:: Displaying a menu for the user to select from.
948* Dialog Boxes:: Displaying a box to ask yes or no.
b8223441 949* Pointer Shape:: Specifying the shape of the mouse pointer.
ebc6903b 950* Window System Selections::Transferring text to and from other windows.
05d21112 951* Drag and Drop:: Internals of Drag-and-Drop implementation.
bfe721d1 952* Color Names:: Getting the definitions of color names.
f3280ac5 953* Text Terminal Colors:: Defining colors for text-only terminals.
bfe721d1 954* Resources:: Getting resource values from the server.
e79a8eb2 955* Display Feature Testing:: Determining the features of a terminal.
bfe721d1 956
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957Frame Parameters
958
959* Parameter Access:: How to change a frame's parameters.
960* Initial Parameters:: Specifying frame parameters when you make a frame.
961* Window Frame Parameters:: List of frame parameters for window systems.
962* Size and Position:: Changing the size and position of a frame.
963* Geometry:: Parsing geometry specifications.
964
965Window Frame Parameters
966
967* Basic Parameters:: Parameters that are fundamental.
968* Position Parameters:: The position of the frame on the screen.
969* Size Parameters:: Frame's size.
970* Layout Parameters:: Size of parts of the frame, and
971 enabling or disabling some parts.
972* Buffer Parameters:: Which buffers have been or should be shown.
973* Management Parameters:: Communicating with the window manager.
974* Cursor Parameters:: Controlling the cursor appearance.
975* Color Parameters:: Colors of various parts of the frame.
976
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977Positions
978
979* Point:: The special position where editing takes place.
980* Motion:: Changing point.
981* Excursions:: Temporary motion and buffer changes.
982* Narrowing:: Restricting editing to a portion of the buffer.
983
984Motion
985
986* Character Motion:: Moving in terms of characters.
987* Word Motion:: Moving in terms of words.
988* Buffer End Motion:: Moving to the beginning or end of the buffer.
989* Text Lines:: Moving in terms of lines of text.
990* Screen Lines:: Moving in terms of lines as displayed.
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991* List Motion:: Moving by parsing lists and sexps.
992* Skipping Characters:: Skipping characters belonging to a certain set.
993
994Markers
995
996* Overview of Markers:: The components of a marker, and how it relocates.
997* Predicates on Markers:: Testing whether an object is a marker.
998* Creating Markers:: Making empty markers or markers at certain places.
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999* Information from Markers::Finding the marker's buffer or character
1000 position.
1001* Marker Insertion Types:: Two ways a marker can relocate when you
1002 insert where it points.
f9f59935 1003* Moving Markers:: Moving the marker to a new buffer or position.
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1004* The Mark:: How "the mark" is implemented with a marker.
1005* The Region:: How to access "the region".
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1006
1007Text
1008
1009* Near Point:: Examining text in the vicinity of point.
1010* Buffer Contents:: Examining text in a general fashion.
f3280ac5 1011* Comparing Text:: Comparing substrings of buffers.
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1012* Insertion:: Adding new text to a buffer.
1013* Commands for Insertion:: User-level commands to insert text.
1014* Deletion:: Removing text from a buffer.
1015* User-Level Deletion:: User-level commands to delete text.
1016* The Kill Ring:: Where removed text sometimes is saved for
1017 later use.
1018* Undo:: Undoing changes to the text of a buffer.
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1019* Maintaining Undo:: How to enable and disable undo information.
1020 How to control how much information is kept.
a44af9f2 1021* Filling:: Functions for explicit filling.
bfe721d1 1022* Margins:: How to specify margins for filling commands.
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1023* Adaptive Fill:: Adaptive Fill mode chooses a fill prefix
1024 from context.
1025* Auto Filling:: How auto-fill mode is implemented to break lines.
a44af9f2 1026* Sorting:: Functions for sorting parts of the buffer.
a44af9f2 1027* Columns:: Computing horizontal positions, and using them.
f3280ac5 1028* Indentation:: Functions to insert or adjust indentation.
a44af9f2 1029* Case Changes:: Case conversion of parts of the buffer.
840797ee 1030* Text Properties:: Assigning Lisp property lists to text characters.
a44af9f2 1031* Substitution:: Replacing a given character wherever it appears.
840797ee 1032* Transposition:: Swapping two portions of a buffer.
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1033* Registers:: How registers are implemented. Accessing
1034 the text or position stored in a register.
3afe8e39 1035* Base 64:: Conversion to or from base 64 encoding.
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1036* MD5 Checksum:: Compute the MD5 "message digest"/"checksum".
1037* Atomic Changes:: Installing several buffer changes "atomically".
840797ee 1038* Change Hooks:: Supplying functions to be run when text is changed.
177c0ea7 1039
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1040The Kill Ring
1041
1042* Kill Ring Concepts:: What text looks like in the kill ring.
1043* Kill Functions:: Functions that kill text.
3afe8e39 1044* Yanking:: How yanking is done.
a44af9f2 1045* Yank Commands:: Commands that access the kill ring.
22697dac 1046* Low-Level Kill Ring:: Functions and variables for kill ring access.
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1047* Internals of Kill Ring:: Variables that hold kill-ring data.
1048
1049Indentation
1050
1051* Primitive Indent:: Functions used to count and insert indentation.
1052* Mode-Specific Indent:: Customize indentation for different modes.
1053* Region Indent:: Indent all the lines in a region.
1054* Relative Indent:: Indent the current line based on previous lines.
1055* Indent Tabs:: Adjustable, typewriter-like tab stops.
1056* Motion by Indent:: Move to first non-blank character.
1057
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1058Text Properties
1059
1060* Examining Properties:: Looking at the properties of one character.
1061* Changing Properties:: Setting the properties of a range of text.
1062* Property Search:: Searching for where a property changes value.
1063* Special Properties:: Particular properties with special meanings.
1064* Format Properties:: Properties for representing formatting of text.
1065* Sticky Properties:: How inserted text gets properties from
1066 neighboring text.
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1067* Lazy Properties:: Computing text properties in a lazy fashion
1068 only when text is examined.
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1069* Clickable Text:: Using text properties to make regions of text
1070 do something when you click on them.
f3280ac5 1071* Links and Mouse-1:: How to make @key{Mouse-1} follow a link.
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1072* Fields:: The @code{field} property defines
1073 fields within the buffer.
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1074* Not Intervals:: Why text properties do not use
1075 Lisp-visible text intervals.
1076
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1077Non-ASCII Characters
1078
1079* Text Representations:: Unibyte and multibyte representations
1080* Converting Representations:: Converting unibyte to multibyte and vice versa.
1081* Selecting a Representation:: Treating a byte sequence as unibyte or multi.
1082* Character Codes:: How unibyte and multibyte relate to
1083 codes of individual characters.
05d21112 1084* Character Sets:: The space of possible character codes
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1085 is divided into various character sets.
1086* Chars and Bytes:: More information about multibyte encodings.
1087* Splitting Characters:: Converting a character to its byte sequence.
1088* Scanning Charsets:: Which character sets are used in a buffer?
1089* Translation of Characters:: Translation tables are used for conversion.
1090* Coding Systems:: Coding systems are conversions for saving files.
1091* Input Methods:: Input methods allow users to enter various
8a9e355c 1092 non-ASCII characters without special keyboards.
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1093* Locales:: Interacting with the POSIX locale.
1094
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1095Coding Systems
1096
1097* Coding System Basics:: Basic concepts.
1098* Encoding and I/O:: How file I/O functions handle coding systems.
1099* Lisp and Coding Systems:: Functions to operate on coding system names.
1100* User-Chosen Coding Systems:: Asking the user to choose a coding system.
1101* Default Coding Systems:: Controlling the default choices.
1102* Specifying Coding Systems:: Requesting a particular coding system
1103 for a single file operation.
1104* Explicit Encoding:: Encoding or decoding text without doing I/O.
1105* Terminal I/O Encoding:: Use of encoding for terminal I/O.
1106* MS-DOS File Types:: How DOS "text" and "binary" files
1107 relate to coding systems.
1108
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1109Searching and Matching
1110
1111* String Search:: Search for an exact match.
62929713 1112* Searching and Case:: Case-independent or case-significant searching.
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1113* Regular Expressions:: Describing classes of strings.
1114* Regexp Search:: Searching for a match for a regexp.
f3280ac5 1115* POSIX Regexps:: Searching POSIX-style for the longest match.
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1116* Match Data:: Finding out which part of the text matched,
1117 after a string or regexp search.
1118* Search and Replace:: Commands that loop, searching and replacing.
f3280ac5 1119* Standard Regexps:: Useful regexps for finding sentences, pages,...
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1120
1121Regular Expressions
1122
1123* Syntax of Regexps:: Rules for writing regular expressions.
1124* Regexp Example:: Illustrates regular expression syntax.
f3280ac5 1125* Regexp Functions:: Functions for operating on regular expressions.
a44af9f2 1126
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1127Syntax of Regular Expressions
1128
1129* Regexp Special:: Special characters in regular expressions.
1130* Char Classes:: Character classes used in regular expressions.
1131* Regexp Backslash:: Backslash-sequences in regular expressions.
1132
1133The Match Data
1134
1135* Replacing Match:: Replacing a substring that was matched.
1136* Simple Match Data:: Accessing single items of match data,
1137 such as where a particular subexpression started.
1138* Entire Match Data:: Accessing the entire match data at once, as a list.
1139* Saving Match Data:: Saving and restoring the match data.
1140
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1141Syntax Tables
1142
f3280ac5 1143* Syntax Basics:: Basic concepts of syntax tables.
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1144* Syntax Descriptors:: How characters are classified.
1145* Syntax Table Functions:: How to create, examine and alter syntax tables.
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1146* Syntax Properties:: Overriding syntax with text properties.
1147* Motion and Syntax:: Moving over characters with certain syntaxes.
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1148* Parsing Expressions:: Parsing balanced expressions
1149 using the syntax table.
1150* Standard Syntax Tables:: Syntax tables used by various major modes.
1151* Syntax Table Internals:: How syntax table information is stored.
f3280ac5 1152* Categories:: Another way of classifying character syntax.
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1153
1154Syntax Descriptors
1155
1156* Syntax Class Table:: Table of syntax classes.
1157* Syntax Flags:: Additional flags each character can have.
1158
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1159Parsing Expressions
1160
1161* Motion via Parsing:: Motion functions that work by parsing.
1162* Position Parse:: Determining the syntactic state of a position.
1163* Parser State:: How Emacs represents a syntactic state.
1164* Low-Level Parsing:: Parsing across a specified region.
1165* Control Parsing:: Parameters that affect parsing.
1166
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1167Abbrevs And Abbrev Expansion
1168
1169* Abbrev Mode:: Setting up Emacs for abbreviation.
f3280ac5 1170* Abbrev Tables:: Creating and working with abbrev tables.
a44af9f2 1171* Defining Abbrevs:: Specifying abbreviations and their expansions.
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1172* Abbrev Files:: Saving abbrevs in files.
1173* Abbrev Expansion:: Controlling expansion; expansion subroutines.
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1174* Standard Abbrev Tables:: Abbrev tables used by various major modes.
1175
1176Processes
1177
1178* Subprocess Creation:: Functions that start subprocesses.
f3280ac5 1179* Shell Arguments:: Quoting an argument to pass it to a shell.
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1180* Synchronous Processes:: Details of using synchronous subprocesses.
1181* Asynchronous Processes:: Starting up an asynchronous subprocess.
1182* Deleting Processes:: Eliminating an asynchronous subprocess.
1183* Process Information:: Accessing run-status and other attributes.
1184* Input to Processes:: Sending input to an asynchronous subprocess.
1185* Signals to Processes:: Stopping, continuing or interrupting
1186 an asynchronous subprocess.
1187* Output from Processes:: Collecting output from an asynchronous subprocess.
1188* Sentinels:: Sentinels run when process run-status changes.
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1189* Query Before Exit:: Whether to query if exiting will kill a process.
1190* Transaction Queues:: Transaction-based communication with subprocesses.
bfe721d1 1191* Network:: Opening network connections.
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1192* Network Servers:: Network servers let Emacs accept net connections.
1193* Datagrams:: UDP network connections.
1194* Low-Level Network:: Lower-level but more general function
1195 to create connections and servers.
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1196* Misc Network:: Additional relevant functions for network connections.
1197* Byte Packing:: Using bindat to pack and unpack binary data.
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1198
1199Receiving Output from Processes
1200
1201* Process Buffers:: If no filter, output is put in a buffer.
1202* Filter Functions:: Filter functions accept output from the process.
e37769b1 1203* Decoding Output:: Filters can get unibyte or multibyte strings.
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1204* Accepting Output:: How to wait until process output arrives.
1205
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1206Low-Level Network Access
1207
1208* Proc: Network Processes. Using @code{make-network-process}.
1209* Options: Network Options. Further control over network connections.
1210* Features: Network Feature Testing.
1211 Determining which network features work on
1212 the machine you are using.
1213
1214Packing and Unpacking Byte Arrays
1215
1216* Bindat Spec:: Describing data layout.
1217* Bindat Functions:: Doing the unpacking and packing.
1218* Bindat Examples:: Samples of what bindat.el can do for you!
1219
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1220Emacs Display
1221
1222* Refresh Screen:: Clearing the screen and redrawing everything on it.
1223* Forcing Redisplay:: Forcing redisplay.
1224* Truncation:: Folding or wrapping long text lines.
99297d62 1225* The Echo Area:: Displaying messages at the bottom of the screen.
f3280ac5 1226* Warnings:: Displaying warning messages for the user.
f3280ac5 1227* Invisible Text:: Hiding part of the buffer text.
99297d62 1228* Selective Display:: Hiding part of the buffer text (the old way).
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1229* Temporary Displays:: Displays that go away automatically.
1230* Overlays:: Use overlays to highlight parts of the buffer.
1231* Width:: How wide a character or string is on the screen.
1232* Line Height:: Controlling the height of lines.
1233* Faces:: A face defines a graphics style
1234 for text characters: font, colors, etc.
1235* Fringes:: Controlling window fringes.
1236* Scroll Bars:: Controlling vertical scroll bars.
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1237* Display Property:: Enabling special display features.
1238* Images:: Displaying images in Emacs buffers.
1239* Buttons:: Adding clickable buttons to Emacs buffers.
6f11a4c0 1240* Abstract Display:: Emacs' Widget for Object Collections.
f3280ac5 1241* Blinking:: How Emacs shows the matching open parenthesis.
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1242* Usual Display:: The usual conventions for displaying nonprinting chars.
1243* Display Tables:: How to specify other conventions.
1244* Beeping:: Audible signal to the user.
1245* Window Systems:: Which window system is being used.
1246
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1247The Echo Area
1248
1249* Displaying Messages:: Explicitly displaying text in the echo area.
1250* Progress:: Informing user about progress of a long operation.
1251* Logging Messages:: Echo area messages are logged for the user.
1252* Echo Area Customization:: Controlling the echo area.
1253
1254Reporting Warnings
1255
1256* Warning Basics:: Warnings concepts and functions to report them.
1257* Warning Variables:: Variables programs bind to customize their warnings.
1258* Warning Options:: Variables users set to control display of warnings.
1259
1260Overlays
1261
1262* Managing Overlays:: Creating and moving overlays.
1263* Overlay Properties:: How to read and set properties.
1264 What properties do to the screen display.
1265* Finding Overlays:: Searching for overlays.
1266
1267Faces
1268
1269* Defining Faces:: How to define a face with @code{defface}.
1270* Face Attributes:: What is in a face?
1271* Attribute Functions:: Functions to examine and set face attributes.
1272* Displaying Faces:: How Emacs combines the faces specified for
1273 a character.
1274* Font Selection:: Finding the best available font for a face.
1275* Face Functions:: How to define and examine faces.
1276* Auto Faces:: Hook for automatic face assignment.
1277* Font Lookup:: Looking up the names of available fonts
1278 and information about them.
1279* Fontsets:: A fontset is a collection of fonts
1280 that handle a range of character sets.
1281
1282Fringes
1283
1284* Fringe Size/Pos:: Specifying where to put the window fringes.
1285* Fringe Indicators:: Displaying indicator icons in the window fringes.
1286* Fringe Cursors:: Displaying cursors in the right fringe.
1287* Fringe Bitmaps:: Specifying bitmaps for fringe indicators.
1288* Customizing Bitmaps:: Specifying your own bitmaps to use in the fringes.
1289* Overlay Arrow:: Display of an arrow to indicate position.
1290
1291The @code{display} Property
1292
1293* Specified Space:: Displaying one space with a specified width.
1294* Pixel Specification:: Specifying space width or height in pixels.
1295* Other Display Specs:: Displaying an image; magnifying text; moving it
1296 up or down on the page; adjusting the width
1297 of spaces within text.
1298* Display Margins:: Displaying text or images to the side of
1299 the main text.
1300
1301Images
1302
1303* Image Descriptors:: How to specify an image for use in @code{:display}.
1304* XBM Images:: Special features for XBM format.
1305* XPM Images:: Special features for XPM format.
1306* GIF Images:: Special features for GIF format.
891c0674 1307* PostScript Images:: Special features for PostScript format.
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1308* Other Image Types:: Various other formats are supported.
1309* Defining Images:: Convenient ways to define an image for later use.
1310* Showing Images:: Convenient ways to display an image once
1311 it is defined.
1312* Image Cache:: Internal mechanisms of image display.
1313
1314Buttons
1315
1316* Button Properties:: Button properties with special meanings.
1317* Button Types:: Defining common properties for classes of buttons.
1318* Making Buttons:: Adding buttons to Emacs buffers.
1319* Manipulating Buttons:: Getting and setting properties of buttons.
1320* Button Buffer Commands:: Buffer-wide commands and bindings for buttons.
1321
1322Abstract Display
1323
1324* Abstract Display Functions:: Functions in the Ewoc package.
1325* Abstract Display Example:: Example of using Ewoc.
1326
1327Display Tables
1328
1329* Display Table Format:: What a display table consists of.
1330* Active Display Table:: How Emacs selects a display table to use.
1331* Glyphs:: How to define a glyph, and what glyphs mean.
1332
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1333Operating System Interface
1334
1335* Starting Up:: Customizing Emacs start-up processing.
1336* Getting Out:: How exiting works (permanent or temporary).
1337* System Environment:: Distinguish the name and kind of system.
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1338* User Identification:: Finding the name and user id of the user.
1339* Time of Day:: Getting the current time.
1340* Time Conversion:: Converting a time from numeric form to a string, or
1341 to calendrical data (or vice versa).
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1342* Time Parsing:: Converting a time from numeric form to text
1343 and vice versa.
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1344* Processor Run Time:: Getting the run time used by Emacs.
1345* Time Calculations:: Adding, subtracting, comparing times, etc.
1346* Timers:: Setting a timer to call a function at a certain time.
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1347* Idle Timers:: Setting a timer to call a function when Emacs has
1348 been idle for a certain length of time.
05d21112 1349* Terminal Input:: Accessing and recording terminal input.
2410b13a 1350* Terminal Output:: Controlling and recording terminal output.
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1351* Sound Output:: Playing sounds on the computer's speaker.
1352* X11 Keysyms:: Operating on key symbols for X Windows
a44af9f2 1353* Batch Mode:: Running Emacs without terminal interaction.
f3280ac5 1354* Session Management:: Saving and restoring state with X Session Management.
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1355
1356Starting Up Emacs
1357
8241495d 1358* Startup Summary:: Sequence of actions Emacs performs at start-up.
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1359* Init File:: Details on reading the init file (@file{.emacs}).
1360* Terminal-Specific:: How the terminal-specific Lisp file is read.
05d21112 1361* Command-Line Arguments:: How command-line arguments are processed,
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1362 and how you can customize them.
1363
05d21112 1364Getting Out of Emacs
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1365
1366* Killing Emacs:: Exiting Emacs irreversibly.
1367* Suspending Emacs:: Exiting Emacs reversibly.
1368
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1369Terminal Input
1370
1371* Input Modes:: Options for how input is processed.
1372* Recording Input:: Saving histories of recent or all input events.
1373
f3280ac5 1374Tips and Conventions
a44af9f2 1375
f3280ac5 1376* Coding Conventions:: Conventions for clean and robust programs.
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EZ
1377* Key Binding Conventions:: Which keys should be bound by which programs.
1378* Programming Tips:: Making Emacs code fit smoothly in Emacs.
1379* Compilation Tips:: Making compiled code run fast.
1380* Warning Tips:: Turning off compiler warnings.
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LK
1381* Documentation Tips:: Writing readable documentation strings.
1382* Comment Tips:: Conventions for writing comments.
1383* Library Headers:: Standard headers for library packages.
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1384
1385GNU Emacs Internals
1386
05d21112 1387* Building Emacs:: How the dumped Emacs is made.
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1388* Pure Storage:: A kludge to make preloaded Lisp functions sharable.
1389* Garbage Collection:: Reclaiming space for Lisp objects no longer used.
f3280ac5 1390* Memory Usage:: Info about total size of Lisp objects made so far.
a44af9f2 1391* Writing Emacs Primitives:: Writing C code for Emacs.
f3280ac5 1392* Object Internals:: Data formats of buffers, windows, processes.
a44af9f2
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1393
1394Object Internals
1395
1396* Buffer Internals:: Components of a buffer structure.
1397* Window Internals:: Components of a window structure.
1398* Process Internals:: Components of a process structure.
31081921 1399@end detailmenu
a44af9f2
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1400@end menu
1401
1402@include intro.texi
1403@include objects.texi
1404@include numbers.texi
1405@include strings.texi
1406
1407@include lists.texi
1408@include sequences.texi
8241495d 1409@include hash.texi
a44af9f2
RS
1410@include symbols.texi
1411@include eval.texi
1412
1413@include control.texi
1414@include variables.texi
1415@include functions.texi
1416@include macros.texi
1417
f9f59935 1418@include customize.texi
a44af9f2
RS
1419@include loading.texi
1420@include compile.texi
cc236dfe 1421@include advice.texi
a44af9f2 1422
cc236dfe 1423@include debugging.texi
f9f59935 1424@include streams.texi
a44af9f2
RS
1425@include minibuf.texi
1426@include commands.texi
a44af9f2 1427
cc236dfe 1428@include keymaps.texi
f9f59935 1429@include modes.texi
a44af9f2
RS
1430@include help.texi
1431@include files.texi
a44af9f2 1432
cc236dfe 1433@include backups.texi
f9f59935 1434@include buffers.texi
a44af9f2
RS
1435@include windows.texi
1436@include frames.texi
f9f59935 1437
cc236dfe 1438@include positions.texi
a44af9f2
RS
1439@include markers.texi
1440@include text.texi
f9f59935 1441@include nonascii.texi
f9f59935 1442
cc236dfe 1443@include searching.texi
a44af9f2
RS
1444@include syntax.texi
1445@include abbrevs.texi
a44af9f2 1446@include processes.texi
f9f59935 1447
a44af9f2 1448@include display.texi
513331d3 1449@include os.texi
a44af9f2
RS
1450
1451@c MOVE to Emacs Manual: include misc-modes.texi
1452
1453@c appendices
1454
1455@c REMOVE this: include non-hacker.texi
1456
a40d4712 1457@include anti.texi
9695b783
GM
1458@include doclicense.texi
1459@include gpl.texi
a44af9f2
RS
1460@include tips.texi
1461@include internals.texi
1462@include errors.texi
1463@include locals.texi
1464@include maps.texi
1465@include hooks.texi
a44af9f2
RS
1466
1467@include index.texi
1468
fdd0ca61 1469@ignore
f9f59935 1470@node New Symbols, , Index, Top
a9f0a989 1471@unnumbered New Symbols Since the Previous Edition
f9f59935 1472
cc236dfe 1473@printindex tp
fdd0ca61 1474@end ignore
f9f59935 1475
a44af9f2
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1476@bye
1477
1478\f
1479These words prevent "local variables" above from confusing Emacs.
ab5796a9
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1480
1481@ignore
1482 arch-tag: f7e9a219-a0e1-4776-b631-08eaa1d49b34
1483@end ignore