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Epsilon doesn't normally keep the previous version
of a file around when you save a modified version. If you want
backups of saved files, you can set the buffer-specific variable
want-backups to 1, using the set-variable command
described in Variables. If this variable is
the first time you save a file in a session, Epsilon will first
preserve the old version by renaming any existing file with that name
to a file with the extension ".bak". For instance, saving a new
version of the file text.c preserves the old version in text.bak. (If
you delete a file's buffer and later read the file again, Epsilon
treats this as a new session and makes a new backup copy the next time
you save.) If want-backups variable is
2, Epsilon will do
this each time you save the file, not just the first time. The
backup-by-renaming variable controls whether Epsilon backs up
files by renaming them (faster) or copying them (necessary in some
environments to preserve attached attributes).
You can change the name Epsilon uses for a
backup file by setting the variable backup-name. Epsilon uses
this as a template for constructing the backup file name. It
copies the template, substituting pieces of the original file for
codes in the template, according to the table. The
sequence %r substitutes a relative pathname to the original file
name, if the file is within the current directory or its
subdirectories, or an absolute pathname otherwise.
The sequence %x substitutes the full pathname of the directory
containing the Epsilon executable. The sequence %X substitutes the
same full pathname, but this time after converting all Windows long
file names making up the path to their equivalent short name aliases.
For example, if the Epsilon executable was in the directory
%x would use exactly that pathname, while %X might yield
c:\Progra~1\Eps13\bin\. Under Unix, %X is the same as %x. Either always ends
with a path separator character like / or \.
| || || ||Example 1 ||Example 2|
| || || || |
| ||Code ||Part ||c:\dos\read.me ||/usr/bin|
| ||%p ||Path ||c:\dos\ ||/usr/|
| ||%b ||Base ||read ||bin|
| ||%e ||Extension ||.me ||(None)|
| ||%f ||Full name ||c:\dos\read.me ||/usr/bin|
| ||%r ||Relative path ||dos\read.me ||/usr/bin|
| || ||(assuming current || |
| || ||directory is ||c:\ ||/usr/mark )|
| ||%x ||Executable path ||c:\Program Files\Eps13\bin\ ||/usr/local/epsilon13.12/bin/|
| ||%X ||Alias to path ||c:\Progra~1\Eps13\bin\ ||/usr/local/epsilon13.12/bin/|
If any other character follows %, Epsilon puts that
character into the backup file name. You can use this, for
example, to include an actual % character in your backup file name,
by putting %% in the template.
automatically save a copy of your file every 500 characters. To make
Epsilon autosave, set the variable want-auto-save to 1.
Epsilon then counts keys as you type them, and every 500 keys, saves
each of your modified files to a file with a name like
#file.c.asv#. Epsilon uses a template (see above) to construct
this name as well, stored in the variable auto-save-name.
Other bits in the want-auto-save variable let you make
auto-saving more verbose, or tell Epsilon not to automatically delete
auto-saved files when exiting, or when the file is saved normally.
You can alter the number of keystrokes between autosaves by setting
the variable auto-save-count. Epsilon also auto-saves after
you've been idle for 30 seconds; set the auto-save-idle-seconds
variable to alter this number. Very large buffers will never be
auto-saved; see the auto-save-biggest-file variable to
Sometimes you may want to explicitly write the buffer out to a file
for backup purposes, but may not want to change the name of the file
associated with the buffer. For that, use the copy-to-file
command on Ctrl-F7. It asks you for the name of a file, and writes the
buffer out to that file, but subsequent Ctrl-X Ctrl-S's will save to the
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