Info Catalog elisp: Transposition elisp: Text elisp: Base 64

elisp: Decompression

 
 31.23 Dealing With Compressed Data
 ==================================
 
 When ‘auto-compression-mode’ is enabled, Emacs automatically
 uncompresses compressed files when you visit them, and automatically
 recompresses them if you alter and save them.  (emacs)Compressed
 Files.
 
    The above feature works by calling an external executable (e.g.,
 ‘gzip’).  Emacs can also be compiled with support for built-in
 decompression using the zlib library, which is faster than calling an
 external program.
 
  -- Function: zlib-available-p
      This function returns non-‘nil’ if built-in zlib decompression is
      available.
 
  -- Function: zlib-decompress-region start end
      This function decompresses the region between START and END, using
      built-in zlib decompression.  The region should contain data that
      were compressed with gzip or zlib.  On success, the function
      replaces the contents of the region with the decompressed data.  On
      failure, the function leaves the region unchanged and returns
      ‘nil’.  This function can be called only in unibyte buffers.
 

Info Catalog elisp: Transposition elisp: Text elisp: Base 64