Can't search in ZIP and tar.gz files

[kenorb]

What version of ripgrep are you using?

$ rg --version
ripgrep 0.8.1
-SIMD -AVX

What operating system are you using ripgrep on?

$ macosver 
ProductBuildVersion 17C2120
ProductCopyright 1983-2017 Apple Inc.
ProductName Mac OS X
ProductUserVisibleVersion 10.13.2
ProductVersion 10.13.2

If this is a bug, what are the steps to reproduce the behavior?

$ echo test > test
$ zip test.zip test
  adding: test (stored 0%)
$ tar zcvf test.tar.gz test
a test
$ gzip test
$ rg -z test
./test.gz
1:test
 $ rg -zl test
test.gz

What is the actual behavior?

No .zip or .tar.gz are searched.

If this is a bug, what is the expected behavior?

Should search in .zip and .tar.gz files.

[BurntSushi]

The documentation states:

Search in compressed files. Currently gz, bz2, xz, and lzma files are
supported. This option expects the decompression binaries to be available in
your PATH.

So this is expected behavior. ripgrep does not advertise support for searching through tar archives.

[kenorb]

I thought --search-zip arg is self-explanatory. And also thought .tar.gz is included as part of .gz.

And at the end, .tar is just plain binary file, so this works:

$ rg -a test test.tar.gz
1?(?Ztest.tar??A

but this not:

$ rg -z -a test test.tar.gz

So if this is as expected, can we keep it open as part of the feature request?

[BurntSushi]

That's because tar archives are explicitly skipped:

ripgrep/src/decompressor.rs

Lines 92 to 95 in 64317bd

	if is_tar_archive(path) {
	debug!("{}: skipping tar archive", path.display());
	return None;
	}

I admit, it does seem like rg -z -a test test.tar.gz should work.