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-rw-r--r--archival/tar.c8
1 files changed, 8 insertions, 0 deletions
diff --git a/archival/tar.c b/archival/tar.c
index 1c71f7f66..6950c271d 100644
--- a/archival/tar.c
+++ b/archival/tar.c
@@ -1162,8 +1162,16 @@ int tar_main(int argc UNUSED_PARAM, char **argv)
tar_handle->seek = seek_by_read;
} else
if (ENABLE_FEATURE_TAR_AUTODETECT
+ && ENABLE_FEATURE_SEAMLESS_LZMA
&& flags == O_RDONLY
&& !(opt & OPT_ANY_COMPRESS)
+ && is_suffixed_with(tar_filename, ".lzma")
+ /* We do this only for .lzma files, they have no signature.
+ * All other compression formats are recognized in
+ * get_header_tar() when first tar block has invalid format.
+ * Doing it here for all filenames would falsely trigger
+ * on e.g. tarball with 1st file named "BZh5".
+ */
) {
tar_handle->src_fd = open_zipped(tar_filename, /*fail_if_not_compressed:*/ 0);
if (tar_handle->src_fd < 0)