From 6a68ac8c27ba6d67f1429cc65fded3fa61564900 Mon Sep 17 00:00:00 2001
From: Alexandru Macovei <alexnmaco@gmail.com>
Date: Sat, 7 Jul 2018 15:44:26 +0300
Subject: [PATCH] [ownership] add help text for --owner

---
 src/app.rs | 13 ++++++++++++-
 1 file changed, 12 insertions(+), 1 deletion(-)

diff --git a/src/app.rs b/src/app.rs
index ab7798f..6faa2dd 100644
--- a/src/app.rs
+++ b/src/app.rs
@@ -529,7 +529,18 @@ pub fn build_app() -> App<'static, 'static> {
             Arg::with_name("owner")
                 .long("owner")
                 .short("o")
-                .takes_value(true),
+                .takes_value(true)
+                .value_name("user:group")
+                .help("Filter by owning user and/or group")
+                .long_help(
+                    "Filter files by their user and/or group. \
+                     Format: [(user|uid)][:(group|gid)]. Either side is optional. \
+                     Precede either side with a '!' to exclude files instead.\n\
+                     Examples:\n    \
+                         --owner john\n    \
+                         --owner :students\n    \
+                         --owner '!john:students'",
+                ),
         );
     }