Mercurial > hg > xemacs-beta
annotate man/new-users-guide/modes.texi @ 2367:ecf1ebac70d8
[xemacs-hg @ 2004-11-04 23:05:23 by ben]
commit mega-patch
configure.in: Turn off -Winline and -Wchar-subscripts.
Use the right set of cflags when compiling modules.
Rewrite ldap configuration to separate the inclusion of lber
(needed in recent Cygwin) from the basic checks for the
needed libraries.
add a function for MAKE_JUNK_C; initially code was added to
generate xemacs.def using this, but it will need to be rewritten.
add an rm -f for junk.c to avoid weird Cygwin bug with cp -f onto
an existing file.
Sort list of auto-detected functions and eliminate unused checks for
stpcpy, setlocale and getwd.
Add autodetection of Cygwin scanf problems
BETA: Rewrite section on configure to indicate what flags are important
and what not.
digest-doc.c, make-dump-id.c, profile.c, sorted-doc.c: Add proper decls for main().
make-msgfile.c: Document that this is old junk.
Move proposal to text.c.
make-msgfile.lex: Move proposal to text.c.
make-mswin-unicode.pl: Convert error-generating code so that the entire message will
be seen as a single unrecognized token.
mule/mule-ccl.el: Update docs.
lispref/mule.texi: Update CCL docs.
ldap/eldap.c: Mule-ize.
Use EXTERNAL_LIST_LOOP_2 instead of deleted EXTERNAL_LIST_LOOP.
* XEmacs 21.5.18 "chestnut" is released.
---------------------------------------------------------------
MULE-RELATED WORK:
---------------------------------------------------------------
---------------------------
byte-char conversion
---------------------------
buffer.c, buffer.h, insdel.c, text.c: Port FSF algorithm for byte-char conversion, replacing broken
previous version. Track the char position of the gap. Add
functions to do char-byte conversion downwards as well as upwards.
Move comments about algorithm workings to internals manual.
---------------------------
work on types
---------------------------
alloc.c, console-x-impl.h, dump-data.c, dump-data.h, dumper.c, dialog-msw.c, dired-msw.c, doc.c, editfns.c, esd.c, event-gtk.h, event-msw.c, events.c, file-coding.c, file-coding.h, fns.c, glyphs-eimage.c, glyphs-gtk.c, glyphs-msw.c, glyphs-shared.c, glyphs-x.c, glyphs.c, glyphs.h, gui.c, hpplay.c, imgproc.c, intl-win32.c, lrecord.h, lstream.c, keymap.c, lisp.h, libsst.c, linuxplay.c, miscplay.c, miscplay.h, mule-coding.c, nas.c, nt.c, ntheap.c, ntplay.c, objects-msw.c, objects-tty.c, objects-x.c, print.c, process-nt.c, process.c, redisplay.h, select-common.h, select-gtk.c, select-x.c, sgiplay.c, sound.c, sound.h, sunplay.c, sysfile.h, sysdep.c, syswindows.h, text.c, unexnt.c, win32.c, xgccache.c: Further work on types. This creates a full set of types for all
the basic semantics of `char' that I have so far identified, so that
its semantics can always be identified for the purposes of proper
Mule-safe code, and the raw use of `char' always avoided.
(1) More type renaming, for consistency of naming.
Char_ASCII -> Ascbyte
UChar_ASCII -> UAscbyte
Char_Binary -> CBinbyte
UChar_Binary -> Binbyte
SChar_Binary -> SBinbyte
(2) Introduce Rawbyte, CRawbyte, Boolbyte, Chbyte, UChbyte, and
Bitbyte and use them.
(3) New types Itext, Wexttext and Textcount for separating out
the concepts of bytes and textual units (different under UTF-16
and UTF-32, which are potential internal encodings).
(4) qxestr*_c -> qxestr*_ascii.
lisp.h: New; goes with other qxe() functions. #### Maybe goes in a
different section.
lisp.h: Group generic int-type defs together with EMACS_INT defs.
lisp.h: * lisp.h (WEXTTEXT_IS_WIDE)
New defns.
lisp.h: New type to replace places where int occurs as a boolean.
It's signed because occasionally people may want to use -1 as
an error value, and because unsigned ints are viral -- see comments
in the internals manual against using them.
dynarr.c: int -> Bytecount.
---------------------------
Mule-izing
---------------------------
device-x.c: Partially Mule-ize.
dumper.c, dumper.h: Mule-ize. Use Rawbyte. Use stderr_out not printf. Use wext_*().
sysdep.c, syswindows.h, text.c: New Wexttext API for manipulation of external text that may be
Unicode (e.g. startup code under Windows).
emacs.c: Mule-ize. Properly deal with argv in external encoding.
Use wext_*() and Wexttext. Use Rawbyte.
#if 0 some old junk on SCO that is unlikely to be correct.
Rewrite allocation code in run-temacs.
emacs.c, symsinit.h, win32.c: Rename win32 init function and call it even earlier, to
initialize mswindows_9x_p even earlier, for use in startup code
(XEUNICODE_P).
process.c: Use _wenviron not environ under Windows, to get Unicode environment
variables.
event-Xt.c: Mule-ize drag-n-drop related stuff.
dragdrop.c, dragdrop.h, frame-x.c: Mule-ize.
text.h: Add some more stand-in defines for particular kinds of conversion;
use in Mule-ization work in frame-x.c etc.
---------------------------
Freshening
---------------------------
intl-auto-encap-win32.c, intl-auto-encap-win32.h: Regenerate.
---------------------------
Unicode-work
---------------------------
intl-win32.c, syswindows.h: Factor out common options to MultiByteToWideChar and
WideCharToMultiByte. Add convert_unicode_to_multibyte_malloc()
and convert_unicode_to_multibyte_dynarr() and use. Add stuff for
alloca() conversion of multibyte/unicode.
alloc.c: Use dfc_external_data_len() in case of unicode coding system.
alloc.c, mule-charset.c: Don't zero out and reinit charset Unicode tables. This fucks up
dump-time loading. Anyway, either we load them at dump time or
run time, never both.
unicode.c: Dump the blank tables as well.
---------------------------------------------------------------
DOCUMENTATION, MOSTLY MULE-RELATED:
---------------------------------------------------------------
EmacsFrame.c, emodules.c, event-Xt.c, fileio.c, input-method-xlib.c, mule-wnnfns.c, redisplay-gtk.c, redisplay-tty.c, redisplay-x.c, regex.c, sysdep.c: Add comment about Mule work needed.
text.h: Add more documentation describing why DFC routines were not written
to return their value. Add some other DFC documentation.
console-msw.c, console-msw.h: Add pointer to docs in win32.c.
emacs.c: Add comments on sources of doc info.
text.c, charset.h, unicode.c, intl-win32.c, intl-encap-win32.c, text.h, file-coding.c, mule-coding.c: Collect background comments and related to text matters and
internationalization, and proposals for work to be done, in text.c
or Internals manual, stuff related to specific textual API's in
text.h, and stuff related to internal implementation of Unicode
conversion in unicode.c. Put lots of pointers to the comments to
make them easier to find.
s/mingw32.h, s/win32-common.h, s/win32-native.h, s/windowsnt.h, win32.c: Add bunches of new documentation on the different kinds of
builds and environments under Windows and how they work.
Collect this info in win32.c. Add pointers to these docs in
the relevant s/* files.
emacs.c: Document places with long comments.
Remove comment about exiting, move to internals manual, put
in pointer.
event-stream.c: Move docs about event queues and focus to internals manual, put
in pointer.
events.h: Move docs about event stream callbacks to internals manual, put
in pointer.
profile.c, redisplay.c, signal.c: Move documentation to the Internals manual.
process-nt.c: Add pointer to comment in win32-native.el.
lisp.h: Add comments about some comment conventions.
lisp.h: Add comment about the second argument.
device-msw.c, redisplay-msw.c: @@#### comments are out-of-date.
---------------------------------------------------------------
PDUMP WORK (MOTIVATED BY UNICODE CHANGES)
---------------------------------------------------------------
alloc.c, buffer.c, bytecode.c, console-impl.h, console.c, device.c, dumper.c, lrecord.h, elhash.c, emodules.h, events.c, extents.c, frame.c, glyphs.c, glyphs.h, mule-charset.c, mule-coding.c, objects.c, profile.c, rangetab.c, redisplay.c, specifier.c, specifier.h, window.c, lstream.c, file-coding.h, file-coding.c: PDUMP:
Properly implement dump_add_root_block(), which never worked before,
and is necessary for dumping Unicode tables.
Pdump name changes for accuracy:
XD_STRUCT_PTR -> XD_BLOCK_PTR.
XD_STRUCT_ARRAY -> XD_BLOCK_ARRAY.
XD_C_STRING -> XD_ASCII_STRING.
*_structure_* -> *_block_*.
lrecord.h: some comments added about
dump_add_root_block() vs dump_add_root_block_ptr().
extents.c: remove incorrect comment about pdump problems with gap array.
---------------------------------------------------------------
ALLOCATION
---------------------------------------------------------------
abbrev.c, alloc.c, bytecode.c, casefiddle.c, device-msw.c, device-x.c, dired-msw.c, doc.c, doprnt.c, dragdrop.c, editfns.c, emodules.c, file-coding.c, fileio.c, filelock.c, fns.c, glyphs-eimage.c, glyphs-gtk.c, glyphs-msw.c, glyphs-x.c, gui-msw.c, gui-x.c, imgproc.c, intl-win32.c, lread.c, menubar-gtk.c, menubar.c, nt.c, objects-msw.c, objects-x.c, print.c, process-nt.c, process-unix.c, process.c, realpath.c, redisplay.c, search.c, select-common.c, symbols.c, sysdep.c, syswindows.h, text.c, text.h, ui-byhand.c: New macros {alloca,xnew}_{itext,{i,ext,raw,bin,asc}bytes} for
more convenient allocation of these commonly requested items.
Modify functions to use alloca_ibytes, alloca_array, alloca_extbytes,
xnew_ibytes, etc. also XREALLOC_ARRAY, xnew.
alloc.c: Rewrite the allocation functions to factor out repeated code.
Add assertions for freeing dumped data.
lisp.h: Moved down and consolidated with other allocation stuff.
lisp.h, dynarr.c: New functions for allocation that's very efficient when mostly in
LIFO order.
lisp.h, text.c, text.h: Factor out some stuff for general use by alloca()-conversion funs.
text.h, lisp.h: Fill out convenience routines for allocating various kinds of
bytes and put them in lisp.h. Use them in place of xmalloc(),
ALLOCA().
text.h: Fill out the convenience functions so the _MALLOC() kinds match
the alloca() kinds.
---------------------------------------------------------------
ERROR-CHECKING
---------------------------------------------------------------
text.h: Create ASSERT_ASCTEXT_ASCII() and ASSERT_ASCTEXT_ASCII_LEN()
from similar Eistring checkers and change the Eistring checkers to
use them instead.
---------------------------------------------------------------
MACROS IN LISP.H
---------------------------------------------------------------
lisp.h: Redo GCPRO declarations. Create a "base" set of functions that can
be used to generate any kind of gcpro sets -- regular, ngcpro,
nngcpro, private ones used in GC_EXTERNAL_LIST_LOOP_2.
buffer.c, callint.c, chartab.c, console-msw.c, device-x.c, dialog-msw.c, dired.c, extents.c, ui-gtk.c, rangetab.c, nt.c, mule-coding.c, minibuf.c, menubar-msw.c, menubar.c, menubar-gtk.c, lread.c, lisp.h, gutter.c, glyphs.c, glyphs-widget.c, fns.c, fileio.c, file-coding.c, specifier.c: Eliminate EXTERNAL_LIST_LOOP, which does not check for circularities.
Use EXTERNAL_LIST_LOOP_2 instead or EXTERNAL_LIST_LOOP_3
or EXTERNAL_PROPERTY_LIST_LOOP_3 or GC_EXTERNAL_LIST_LOOP_2
(new macro). Removed/redid comments on EXTERNAL_LIST_LOOP.
---------------------------------------------------------------
SPACING FIXES
---------------------------------------------------------------
callint.c, hftctl.c, number-gmp.c, process-unix.c: Spacing fixes.
---------------------------------------------------------------
FIX FOR GEOMETRY PROBLEM IN FIRST FRAME
---------------------------------------------------------------
unicode.c: Add workaround for newlib bug in sscanf() [should be fixed by
release 1.5.12 of Cygwin].
toolbar.c: bug fix for problem of initial frame being 77 chars wide on Windows.
will be overridden by my other ws.
---------------------------------------------------------------
FIX FOR LEAKING PROCESS HANDLES:
---------------------------------------------------------------
process-nt.c: Fixes for leaking handles. Inspired by work done by Adrian Aichner
<adrian@xemacs.org>.
---------------------------------------------------------------
FIX FOR CYGWIN BUG (Unicode-related):
---------------------------------------------------------------
unicode.c: Add workaround for newlib bug in sscanf() [should be fixed by
release 1.5.12 of Cygwin].
---------------------------------------------------------------
WARNING FIXES:
---------------------------------------------------------------
console-stream.c: `reinit' is unused.
compiler.h, event-msw.c, frame-msw.c, intl-encap-win32.c, text.h: Add stuff to deal with ANSI-aliasing warnings I got.
regex.c: Gather includes together to avoid warning.
---------------------------------------------------------------
CHANGES TO INITIALIZATION ROUTINES:
---------------------------------------------------------------
buffer.c, emacs.c, console.c, debug.c, device-x.c, device.c, dragdrop.c, emodules.c, eval.c, event-Xt.c, event-gtk.c, event-msw.c, event-stream.c, event-tty.c, events.c, extents.c, faces.c, file-coding.c, fileio.c, font-lock.c, frame-msw.c, glyphs-widget.c, glyphs.c, gui-x.c, insdel.c, lread.c, lstream.c, menubar-gtk.c, menubar-x.c, minibuf.c, mule-wnnfns.c, objects-msw.c, objects.c, print.c, scrollbar-x.c, search.c, select-x.c, text.c, undo.c, unicode.c, window.c, symsinit.h: Call reinit_*() functions directly from emacs.c, for clarity.
Factor out some redundant init code. Move disallowed stuff
that had crept into vars_of_glyphs() into complex_vars_of_glyphs().
Call init_eval_semi_early() from eval.c not in the middle of
vars_of_() in emacs.c since there should be no order dependency
in the latter calls.
---------------------------------------------------------------
ARMAGEDDON:
---------------------------------------------------------------
alloc.c, emacs.c, lisp.h, print.c: Rename inhibit_non_essential_printing_operations to
inhibit_non_essential_conversion_operations.
text.c: Assert on !inhibit_non_essential_conversion_operations.
console-msw.c, print.c: Don't do conversion in SetConsoleTitle or FindWindow to avoid
problems during armageddon. Put #errors for NON_ASCII_INTERNAL_FORMAT
in places where problems would arise.
---------------------------------------------------------------
CHANGES TO THE BUILD PROCEDURE:
---------------------------------------------------------------
config.h.in, s/cxux.h, s/usg5-4-2.h, m/powerpc.h: Add comment about correct ordering of this file.
Rearrange everything to follow this -- put all #undefs together
and before the s&m files. Add undefs for HAVE_ALLOCA, C_ALLOCA,
BROKEN_ALLOCA_IN_FUNCTION_CALLS, STACK_DIRECTION. Remove unused
HAVE_STPCPY, HAVE_GETWD, HAVE_SETLOCALE.
m/gec63.h: Deleted; totally broken, not used at all, not in FSF.
m/7300.h, m/acorn.h, m/alliant-2800.h, m/alliant.h, m/altos.h, m/amdahl.h, m/apollo.h, m/att3b.h, m/aviion.h, m/celerity.h, m/clipper.h, m/cnvrgnt.h, m/convex.h, m/cydra5.h, m/delta.h, m/delta88k.h, m/dpx2.h, m/elxsi.h, m/ews4800r.h, m/gould.h, m/hp300bsd.h, m/hp800.h, m/hp9000s300.h, m/i860.h, m/ibmps2-aix.h, m/ibmrs6000.h, m/ibmrt-aix.h, m/ibmrt.h, m/intel386.h, m/iris4d.h, m/iris5d.h, m/iris6d.h, m/irist.h, m/isi-ov.h, m/luna88k.h, m/m68k.h, m/masscomp.h, m/mg1.h, m/mips-nec.h, m/mips-siemens.h, m/mips.h, m/news.h, m/nh3000.h, m/nh4000.h, m/ns32000.h, m/orion105.h, m/pfa50.h, m/plexus.h, m/pmax.h, m/powerpc.h, m/pyrmips.h, m/sequent-ptx.h, m/sequent.h, m/sgi-challenge.h, m/symmetry.h, m/tad68k.h, m/tahoe.h, m/targon31.h, m/tekxd88.h, m/template.h, m/tower32.h, m/tower32v3.h, m/ustation.h, m/vax.h, m/wicat.h, m/xps100.h: Delete C_ALLOCA, HAVE_ALLOCA, STACK_DIRECTION,
BROKEN_ALLOCA_IN_FUNCTION_CALLS. All of this is auto-detected.
When in doubt, I followed recent FSF sources, which also have
these things deleted.
author | ben |
---|---|
date | Thu, 04 Nov 2004 23:08:28 +0000 |
parents | 0784d089fdc9 |
children |
rev | line source |
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428 | 1 @comment node-name, next, previous, up |
2 @node Modes, Files, Help, Top | |
3 @chapter Major and Minor Modes | |
4 @cindex modes | |
5 | |
6 XEmacs is @dfn{language sensitive}. It has several @dfn{major} and | |
7 @dfn{minor} modes. The major modes customize Emacs to edit text of a | |
8 particular sort. There are major modes for C, Lisp, Emacs Lisp, LaTeX, | |
9 English etc. Within each major mode, certain functions and keys are | |
10 redefined to "suit" that particular sort of text. The minor modes | |
11 provide certain features which can be turned off or on at any | |
12 time. Emacs can only be in one major mode at any time, but it can turn | |
13 on several minor modes at the same time. After you have selected any | |
14 major or minor mode, you can select @b{Describe Mode} from the @b{Help} | |
15 menu and you will get documentation about those modes. | |
16 | |
17 @comment node-name, next, previous, up | |
18 @menu | |
19 * Major Modes:: Choosing Major Modes | |
20 * Minor Modes:: Auto-Fill, Abbrev and other minor modes | |
21 @end menu | |
22 | |
23 @node Major Modes, Minor Modes, Modes, Modes | |
24 @section Major Modes | |
25 @cindex major modes | |
26 | |
27 Emacs has several major modes which customize Emacs to edit text of | |
28 various sorts. You can have only one major mode at any time. Within each | |
29 major mode, Emacs redefines certain functions (like cursor movement, | |
30 indentation and text killing) to suit the needs of the text being | |
31 edited. When you are editing a specific type of text you should switch | |
32 to the appropriate mode. If you are working with C code, you should | |
33 switch to C mode; if you are working with Lisp code, then switch to lisp | |
34 mode and if you are working with English text switch to Text mode. | |
35 | |
36 When you open a file to work on, Emacs usually selects the | |
37 appropriate mode. For example, if you open a file called @file{guide.c} | |
38 then Emacs will select the C mode because of the ".c" extension of the | |
39 file. To explicitly select a mode type the following command: | |
40 | |
41 @example | |
42 ;;; selects lisp mode | |
43 M-x lisp-mode | |
44 | |
45 ;;; selects C mode | |
46 M-x c-mode | |
47 @end example | |
48 | |
49 @noindent | |
50 To select any other mode, just add the major mode name before the | |
51 '-mode'. The current mode in which you are in will be displayed in | |
52 parenthesis in the mode-line at the bottom of the frame. All major | |
53 modes have some special keybindings and you can get a listing of those | |
54 keybindings by selecting @b{List Keybindings} from the @b{Help} menu on | |
55 the menu bar. | |
56 | |
57 Some of the available modes in XEmacs are : | |
58 | |
59 @table @b | |
60 @item fundamental-mode | |
61 @cindex fundamental-mode | |
62 When you start XEmacs, usually you start with the default "Fundamental" | |
63 mode. This mode has no special definitions or settings. | |
64 | |
65 @item nroff-mode | |
66 @cindex nroff-mode | |
67 Use this mode when you have to format a text with nroff before it can be | |
68 available in readable form. It redefines some indentation | |
69 commands. @xref{Nroff Mode,,,xemacs,XEmacs User's Manual}, for information | |
70 on this mode. | |
71 | |
72 @item tex-mode | |
73 @cindex tex-mode | |
74 Use this mode if you are using the LaTeX text-formatter. It provides | |
75 commands for insertion of quotes, braces and other characters. It also | |
76 allows you to format the buffer for printing. @xref{TeX | |
77 Mode,,,xemacs,XEmacs User's Manual}, for information on this mode. | |
78 | |
79 @item texinfo-mode | |
80 @cindex texinfo-mode | |
81 Texinfo is a documentation system that uses a single source file to | |
82 produce both printed output and on-line documentation. When you use this | |
83 mode, there will be some special keybindings for inserting some | |
84 characters and executing some commands. | |
85 | |
86 @ifinfo | |
87 This info file which you are reading right now is produced by 'Texinfo' | |
88 @end ifinfo | |
89 @iftex | |
90 This manual itself is produced by 'Texinfo' | |
91 @end iftex | |
92 | |
93 @item outline-mode | |
94 @cindex outline-mode | |
95 Use this mode for editing outlines. When you enable this mode, you can | |
96 make part of the text temporarily invisible so that you can see the | |
97 overall structure of the outline. @xref{Outline Mode,,,xemacs,XEmacs User's | |
98 Manual}, for information on this mode. | |
99 | |
100 @item c-mode | |
101 @cindex c-mode | |
102 Use this mode for C programs. It will redefine some indentation | |
103 commands. @xref{C Indent,,,xemacs,XEmacs User's Manual}. | |
104 | |
105 @item lisp-mode | |
106 @cindex lisp-mode | |
107 Use this mode for Lisp programs. Look at the XEmacs User's Manual for | |
108 more information. | |
109 | |
110 @item fortran-mode | |
111 @cindex fortran-mode | |
112 Use this mode for Fortran programs. This mode provides special commands | |
113 to move around and some other indentation commands. For more | |
114 information on this mode, @xref{Fortran,,,xemacs,XEmacs User's Manual}. | |
115 | |
116 @item edit-picture | |
117 @cindex edit-picture | |
118 This is the picture mode which you can use to create a picture out of | |
119 text characters. @xref{Picture,,,xemacs,XEmacs User's Manual}, for more | |
120 information. | |
121 | |
122 @item asm-mode | |
123 @cindex asm-mode | |
124 Use asm-mode for editing files of assembler code. Look at the file | |
462 | 125 @file{ /usr/local/lib/xemacs-VERSION/lisp/modes/asm.el} for more |
428 | 126 information. |
127 | |
128 @end table | |
129 | |
130 There are some other modes and commands for working with other kinds of | |
131 text or programs. Emacs also provides commands for reading and sending | |
132 Mail. For more information on these features look at the XEmacs | |
133 Manual. Emacs also provides the functions of a desk calendar, with a | |
134 diary of past or planned events. For more information on the calendar | |
135 mode look at the manual for Calendar Mode and Diary. | |
136 | |
137 @comment node-name, next, previous, up | |
138 @node Minor Modes, , Major Modes, Modes | |
139 @section Minor Modes | |
140 @cindex minor modes | |
141 | |
142 The minor modes in Emacs provide some optional features which you can | |
143 turn on or off. Any number of minor modes can be active at the same time | |
144 with any major mode. You can enable a minor mode in one buffer and | |
145 disable it in other mode. To enable a minor mode, for example the | |
146 font-lock mode type the following command: | |
147 | |
148 @example | |
149 M-x font-lock-mode | |
150 @end example | |
151 @noindent | |
152 To enable the other minor modes, replace the "font-lock" with the | |
153 name of the minor mode. To disable the mode type the command again. A | |
154 positive argument will always turn the mode on. Whenever you type this | |
155 command, it will turn the mode on if it was off, OR it will turn it off | |
156 if it was on i.e. it toggles. Look at the mode-line at the bottom of the | |
157 frame. If it says FLock in parentheses, then it means that this | |
158 mode is on, otherwise it is off. | |
159 | |
160 The following are some of the minor modes available in XEmacs. To enable | |
161 any one of them type "M-x" in front of them. | |
162 | |
163 @table @b | |
164 @item font-lock-mode | |
165 @cindex font-lock-mode | |
166 | |
167 You can also choose this mode by selecting the @b{Syntax Highlighting} | |
168 menu item from the @b{Options} menu on the menu-bar at the | |
169 top. If you wish to have this mode enabled permanently, choose | |
170 @b{Save Options} from the @b{Options} menu. @xref{Options Menu}, for | |
171 more information on the Options menu. You can also add statements in | |
462 | 172 your @file{init.el} file. For each major mode in which you wish to |
173 enable this minor mode, you need a statement in your @file{init.el} | |
428 | 174 file. The following example shows how to enable the font-lock mode when |
175 the major mode is c-mode. | |
176 | |
177 @example | |
440 | 178 (add-hook 'c-mode-hook 'turn-on-font-lock) |
428 | 179 @end example |
180 | |
181 @noindent | |
182 @xref{Other Customizations}. | |
183 | |
184 When you enable this mode, the text will be displayed in | |
185 different colors and fonts depending on the type of the text. This makes | |
186 the text very easy to read and understand. For example, comments might | |
187 be displayed in red, variables in black, functions in blue and other | |
188 keywords in different colors and fonts. When you select @b{More} from | |
189 the @b{Syntax Highlighting} option, you get very detailed display of | |
190 colors and fonts; function names within comments themselves might appear | |
191 in a different font and color. | |
192 | |
193 @item auto-fill-mode | |
194 @findex auto-fill-mode | |
195 Enabling this mode will provide automatic word-wrapping. The @key{SPC} | |
196 key will break lines i.e. insert newlines as you type to prevent lines | |
197 from becoming too long. | |
198 | |
199 @item overwrite-mode | |
200 @cindex overwrite-mode | |
201 When you enable this mode, the text that you type will replace the | |
202 existing text rather than moving it to the right (the default case). You | |
203 can enable this mode by selecting @b{Overstrike} menu-item from the | |
204 @b{Options} menu from the menu-bar. | |
205 | |
206 @item abbrev-mode | |
207 @cindex abbrev-mode | |
208 After you enable this mode, you can define words which will expand into | |
209 some different text i.e. you can define abbreviations. For example, you | |
210 might define "expand" to "expand will eventually expand to this | |
211 text". After this definition you will be able to get "expand will | |
212 eventually expand to this text" simply by typing | |
213 | |
214 @example | |
215 expand @key{SPC} | |
216 @end example | |
217 | |
218 @noindent | |
219 @xref{Abbrevs,,,xemacs,XEmacs User's Manual}, for more information on this | |
220 mode and on defining abbreviations. | |
221 | |
222 @item auto-save-mode | |
223 @cindex auto-save-mode | |
224 After you enable this mode in a buffer, the contents of that buffer will | |
225 be saved periodically. This will reduce the amount you might lose in | |
226 case of a system crash. | |
227 | |
228 @item line-number-mode | |
229 @cindex line-number-mode | |
230 After you enable this mode, the line number at which your cursor is | |
442 | 231 present will be displayed continuously in the mode line. |
428 | 232 |
233 @item blink-paren | |
234 @cindex blink-paren | |
235 To enable this command, just type | |
236 @example | |
237 M-x blink-paren | |
238 @end example | |
239 | |
240 @noindent | |
241 Do not add the "-mode" to it. You can also select the @b{Paren | |
242 Highlighting} option from the @b{Options} menu. After you enable this | |
243 command, put your cursor on one of the left parenthesis. The other | |
244 matching parenthesis will start blinking. @xref{Options Menu}, for more | |
245 information on the @b{Paren Highlighting} option. | |
246 @end table | |
247 | |
248 For information on some other modes, look at the XEmacs User's Manual | |
249 and the associated files. | |
250 |