Tags: patch

0. cd /tmp

1. echo "test" | gzip > test.gz
2. zip test.zip test.gz
3. C-x C-f test.zip RET
4. RET ('archive-extract' to visit the first file)

-- file content is nicely displayed ungzipped from zip archive.

1. echo "test" | gzip > test.gz
2. tar zcvf test.tar.gz test.gz
3. C-x C-f test.tar.gz RET
4. RET ('tar-extract' to visit the first file)

-- garbage is displayed instead of ungzipped file content.

The reason why gzipped files can be visited from arc-mode archives is because
of this line in arc-mode.el in 'archive-extract' with this comment:

(defun archive-extract (&optional other-window-p event)
  ...
  (archive-try-jka-compr)     ;Pretty ugly hack :-(
  ...

To support gzipped files in tar archives as well, this patch
copies the same pretty ugly hack from arc-mode.el to tar-mode.el: