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6. Reading/Writing/Loading Compressed Files

This package implements low-level support for reading, writing, and loading compressed files. It hooks into the low-level file I/O functions (including write-region and insert-file-contents) so that they automatically compress or uncompress a file if the file appears to need it (based on the extension of the file name). Packages like Rmail, VM, GNUS, and Info should be able to work with compressed files without modification.

The operation of this package should be transparent to the user (except for messages appearing when a file is being compressed or uncompressed).

The variable, jka-compr-compression-info-list can be used to customize jka-compr to work with other compression programs. The default value of this variable allows jka-compr to work with Unix compress and gzip.

To activate this package, add the following to your initialization file:

  (toggle-auto-compression 1 t)  ; enable compression/decompression

To configure this package, type:

  M-x customize-group RET jka-compr RET

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