@c This is part of the Emacs manual.
-@c Copyright (C) 1985,86,87,93,94,95,97,99, 2000, 2001
+@c Copyright (C) 1985,86,87,93,94,95,97,99, 2000, 2001, 2004
@c Free Software Foundation, Inc.
@c See file emacs.texi for copying conditions.
@node Files, Buffers, Keyboard Macros, Top
default, both variables are 2.
@vindex delete-old-versions
- If @code{delete-old-versions} is non-@code{nil}, Emacs deletes the
-excess backup files silently. If it is @code{nil}, the default, Emacs
-asks you whether it should delete the excess backup versions.
+ If @code{delete-old-versions} is @code{t}, Emacs deletes the excess
+backup files silently. If it is @code{nil}, the default, Emacs asks
+you whether it should delete the excess backup versions. If it has
+any other value, then Emacs never automatically deletes backups.
Dired's @kbd{.} (Period) command can also be used to delete old versions.
@xref{Dired Deletion}.
@end example
Then add the hook function @code{time-stamp} to the hook
-@code{write-file-functions}; that hook function will automatically update
+@code{before-save-hook}; that hook function will automatically update
the time stamp, inserting the current date and time when you save the
file. You can also use the command @kbd{M-x time-stamp} to update the
time stamp manually. For other customizations, see the Custom group
the current buffer. Since reverting a buffer unintentionally could lose
a lot of work, you must confirm this command with @kbd{yes}.
- @code{revert-buffer} keeps point at the same distance (measured in
-characters) from the beginning of the file. If the file was edited only
-slightly, you will be at approximately the same piece of text after
-reverting as before. If you have made drastic changes, the same value of
-point in the old file may address a totally different piece of text.
+ @code{revert-buffer} tries to position point in such a way that, if
+the file was edited only slightly, you will be at approximately the
+same piece of text after reverting as before. However, if you have made
+drastic changes, point may wind up in a totally different piece of text.
Reverting marks the buffer as ``not modified'' until another change is
made.
Auto-Revert mode, Emacs periodically checks all file buffers and
reverts any when the corresponding file has changed. The local
variant, Auto-Revert mode, applies only to buffers in which it was
-activated. Checking the files is done at intervals determined by the
-variable @code{auto-revert-interval}.
+activated. The variable @code{auto-revert-interval} controls how
+often to check for a changed file. Since checking a remote file is
+too slow, these modes do not check or revert remote files.
@node Auto Save
@section Auto-Saving: Protection Against Disasters
@samp{#} to the front and rear of buffer name, then
adding digits and letters at the end for uniqueness. For
example, the @samp{*mail*} buffer in which you compose messages to be
-sent might auto-saved in a file named @file{#*mail*#704juu}. Auto-save file
+sent might be auto-saved in a file named @file{#*mail*#704juu}. Auto-save file
names are made this way unless you reprogram parts of Emacs to do
something different (the functions @code{make-auto-save-file-name} and
@code{auto-save-file-name-p}). The file name to be used for auto-saving
deleted the text unintentionally, you might find the auto-save file more
useful if it contains the deleted text. To reenable auto-saving after
this happens, save the buffer with @kbd{C-x C-s}, or use @kbd{C-u 1 M-x
-auto-save}.
+auto-save-mode}.
@vindex auto-save-visited-file-name
If you want auto-saving to be done in the visited file rather than
stretch factor greater than 1 means the color range spans more than a
year.
+From the annotate buffer, you can use the following keys to browse the
+annotations of past revisions, view diffs, or view log entries:
+
+@itemize @bullet
+
+@item
+Pressing @kbd{P} annotates the previous revision. It also takes a
+numeric prefix argument, so for example @kbd{C-u 10 P} would take you
+back 10 revisions.
+
+@item
+Pressing @kbd{N} annotates the next revision. It also takes a numeric
+prefix argument, so for example @kbd{C-u 10 N} would take you forward
+10 revisions.
+
+@item
+Pressing @kbd{J} annotates the revision at line (as denoted by the
+version number on the same line).
+
+@item
+Pressing @kbd{A} annotates the revision previous to line (as denoted
+by the version number on the same line). This is useful to see the
+state the file was in before the change on the current line was made.
+
+@item
+Pressing @kbd{D} shows the diff of the revision at line with its
+previous revision. This is useful to see what actually changed when
+the revision denoted on the current line was committed.
+
+@item
+Pressing @kbd{L} shows the log of the revision at line. This is
+useful to see the author's description of the changes that occurred
+when the revision denoted on the current line was committed.
+
+@item
+Pressing @kbd{W} annotates the workfile (most up to date) version. If
+you used @kbd{P} and @kbd{N} to browse to other revisions, use this
+key to return to the latest version.
+@end itemize
+
@node Secondary VC Commands
@subsection The Secondary Commands of VC
@menu
* Registering:: Putting a file under version control.
* VC Status:: Viewing the VC status of files.
-* VC Undo:: Cancelling changes before or after check-in.
+* VC Undo:: Canceling changes before or after check-in.
* VC Dired Mode:: Listing files managed by version control.
* VC Dired Commands:: Commands to use in a VC Dired buffer.
@end menu
for moving around in the file, but none for changing it; type @kbd{?}
while viewing for a list of them. They are mostly the same as normal
Emacs cursor motion commands. To exit from viewing, type @kbd{q}.
-The commands for viewing are defined by a special major mode called View
+The commands for viewing are defined by a special minor mode called View
mode.
A related command, @kbd{M-x view-buffer}, views a buffer already present
HCoop / bpt / emacs.git / blobdiff