add --du and --prune description in usage()

In usage(),"--du" and "--prune" options are supported, but the description of them is not given.

Signed-off-by: xueyamao <xueyamao@kylinos.cn>

0000-Fix-tree-args-option-displayed-incomplete.patch

@@ -0,0 +1,39 @@
+From 894f81c355d80445d9117194d458381b73da989f Mon Sep 17 00:00:00 2001
+From: xueyamao <xueyamao@kylinos.cn>
+Date: Sun, 24 Jul 2022 18:29:29 -0700
+Subject: [PATCH]tree:add --du and --prune description in usage()
+
+In usage(), '--du' and "--prune" options are supported,
+but the description of them is not given.
+So we add --du and --prune description in usage().
+
+Signed-off-by: xueyamao xueyamao@kylinos.cn
+---
+ tree.c | 4 +++-
+ 1 file changed, 3 insertions(+), 1 deletion(-)
+
+diff --git a/tree.c b/tree.c
+index a633c57..e235853 100644
+--- a/tree.c
++++ b/tree.c
+@@ -632,7 +632,7 @@ void usage(int n)
+ 	"\t[-L level [-R]] [-P pattern] [-I pattern] [-o filename] [--version]\n"
+ 	"\t[--help] [--inodes] [--device] [--noreport] [--nolinks] [--dirsfirst]\n"
+ 	"\t[--charset charset] [--filelimit[=]#] [--si] [--timefmt[=]<f>]\n"
+-	"\t[--sort[=]<name>] [--matchdirs] [--ignore-case] [--fromfile] [--]\n"
++	"\t[--sort[=]<name>] [--matchdirs] [--ignore-case] [--fromfile] [--du] [--prune] [--]\n"
+ 	"\t[<directory list>]\n");
+   if (n < 2) return;
+   fprintf(stdout,
+@@ -653,6 +653,8 @@ void usage(int n)
+ 	"  --filelimit # Do not descend dirs with more than # files in them.\n"
+ 	"  --timefmt <f> Print and format time according to the format <f>.\n"
+ 	"  -o filename   Output to file instead of stdout.\n"
++	"  --du          Print directory sizes.\n"
++	"  --prune       Prune empty directories from the output.\n"
+ 	"  ------- File options -------\n"
+ 	"  -q            Print non-printable characters as '?'.\n"
+ 	"  -N            Print non-printable characters as is.\n"
+-- 
+1.8.3.1
+

tree.spec

@@ -1,6 +1,6 @@
 Name:     tree
 Version:  1.8.0
-Release:  2
+Release:  3
 Summary:  Tree file viewer tool
 License:  GPLv2+
 URL:      http://mama.indstate.edu/users/ice/tree/
@@ -8,6 +8,8 @@ URL:      http://mama.indstate.edu/users/ice/tree/
 Source0:  ftp://mama.indstate.edu/linux/tree/%{name}-%{version}.tgz
 
 BuildRequires: gcc 
+# Document --du and --prune options in help output.
+Patch0: 0000-Fix-tree-args-option-displayed-incomplete.patch
 
 %description
 Tree is a recursive directory listing command that produces a depth indented
@@ -44,6 +46,9 @@ install -D -m 644 doc/tree.1 $RPM_BUILD_ROOT%{_mandir}/man1/tree.1
 %{_mandir}/man1/*
 
 %changelog
+* Tue Jul 12 2022 xueyamao <xueyamao@kylinos.cn> - 1.8.0-3
+- DESC: Document --du and --prune options in help output
+
 * Fri Jul 30 2021 chenyanpanHW <chenyanpan@huawei.com> - 1.8.0-2
 - DESC: delete -S git from %autosetup, and delete BuildRequires git