1 files changed, 7 insertions, 0 deletions

diff --git a/libbb/getopt_ulflags.c b/libbb/getopt_ulflags.c
index 19c96914d..e0dc1371f 100644
--- a/libbb/getopt_ulflags.c
+++ b/libbb/getopt_ulflags.c
@@ -36,6 +36,13 @@ bb_getopt_ulflags (int argc, char **argv, const char *applet_opts, ...)
         and so on.  You can also look at the return value as a bit
         field and each option sets one bit.
 
+        On exit, global variable optind is set so that if you
+        will do argc -= optind; argv += optind; then
+        argc will be equal to number of remaining non-option
+        arguments, first one would be in argv[0], next in argv[1] and so on
+        (options and their parameters will be moved into argv[]
+        positions prior to argv[optind]).
+
  ":"    If one of the options requires an argument, then add a ":"
         after the char in applet_opts and provide a pointer to store
         the argument.  For example: