xz: Mention --threads in --help.

Thanks to Olivier Delhomme for pointing out that this
was still missing.

diff --git a/src/xz/message.c b/src/xz/message.c
index 19e441626937a1d1edb3a2a22f3e8a46e1c8319c..bc16aedbc61eabcbc1ec3b9ca648be96b00c02fe 100644 (file)
--- a/src/xz/message.c
+++ b/src/xz/message.c
@@ -1152,6 +1152,10 @@ message_help(bool long_help)
 "  -e, --extreme       try to improve compression ratio by using more CPU time;\n"
 "                      does not affect decompressor memory requirements"));
 
+       puts(_(
+"  -T, --threads=NUM   use at most NUM threads; the default is 1; set to 0\n"
+"                      to use the number of processor cores"));
+
        if (long_help) {
                // FIXME? Mention something about threading?
                puts(_(