add comment about xz format support
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
diff --git a/libbb/read.c b/libbb/read.c
index 503216e..21e005c 100644
--- a/libbb/read.c
+++ b/libbb/read.c
@@ -334,6 +334,11 @@
if (!ENABLE_FEATURE_SEAMLESS_BZ2
|| magic[0] != 'B' || magic[1] != 'Z'
) {
+
+// TODO: xz format support. rpm adopted it, "rpm -i FILE.rpm" badly needs this.
+// Signature: 0xFD, '7', 'z', 'X', 'Z', 0x00
+// More info at: http://tukaani.org/xz/xz-file-format.txt
+
if (fail_if_not_detected)
bb_error_msg_and_die("no gzip"
IF_FEATURE_SEAMLESS_BZ2("/bzip2")