ps: add comment about -T

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

diff --git a/procps/ps.c b/procps/ps.c
index be11a1b6771ded2e54b2ada1983a563851e4d1db..0b674ffb452d9e46c96fa480d5615b363ea106ca 100644 (file)
--- a/procps/ps.c
+++ b/procps/ps.c
@@ -483,7 +483,11 @@ int ps_main(int argc UNUSED_PARAM, char **argv)
        // -l  Generate a long listing
        // -o col1,col2,col3=header
        //     Select which columns to display
-       /* We allow (and ignore) most of the above. FIXME */
+       /* We allow (and ignore) most of the above. FIXME.
+        * -T is picked for threads (POSIX hasn't it standardized).
+        * procps v3.2.7 supports -T and shows tids as SPID column,
+        * it also supports -L where it shows tids as LWP column.
+        */
        opt_complementary = "o::";
        opt = getopt32(argv, "Zo:aAdefl"IF_FEATURE_SHOW_THREADS("T"), &opt_o);
        if (opt_o) {