;;; Code:
-(defvar tar-anal-blocksize 20
+(defgroup tar nil
+ "Simple editing of tar files."
+ :prefix "tar-"
+ :group 'data)
+
+(defcustom tar-anal-blocksize 20
"*The blocksize of tar files written by Emacs, or nil, meaning don't care.
The blocksize of a tar file is not really the size of the blocks; rather, it is
the number of blocks written with one system call. When tarring to a tape,
this is the size of the *tape* blocks, but when writing to a file, it doesn't
matter much. The only noticeable difference is that if a tar file does not
have a blocksize of 20, tar will tell you that; all this really controls is
-how many null padding bytes go on the end of the tar file.")
+how many null padding bytes go on the end of the tar file."
+ :type '(choice integer (const nil))
+ :group 'tar)
-(defvar tar-update-datestamp nil
+(defcustom tar-update-datestamp nil
"*Non-nil means tar-mode should play fast and loose with sub-file datestamps.
If this is true, then editing and saving a tar file entry back into its
tar file will update its datestamp. If false, the datestamp is unchanged.
You may or may not want this - it is good in that you can tell when a file
in a tar archive has been changed, but it is bad for the same reason that
editing a file in the tar archive at all is bad - the changed version of
-the file never exists on disk.")
+the file never exists on disk."
+ :type 'boolean
+ :group 'tar)
-(defvar tar-mode-show-date nil
+(defcustom tar-mode-show-date nil
"*Non-nil means Tar mode should show the date/time of each subfile.
-This information is useful, but it takes screen space away from file names.")
+This information is useful, but it takes screen space away from file names."
+ :type 'boolean
+ :group 'tar)
(defvar tar-parse-info nil)
(defvar tar-header-offset nil)
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