From 5a4ee4df342f64efb5259c23438b0c6b0e734a65 Mon Sep 17 00:00:00 2001
From: Thomas Voss <mail@thomasvoss.com>
Date: Tue, 27 Sep 2022 20:54:19 +0200
Subject: [PATCH] rev: Document the '-' filename

---
 Base/usr/share/man/man1/rev.md | 24 ++++++++++++++++++++++--
 1 file changed, 22 insertions(+), 2 deletions(-)

diff --git a/Base/usr/share/man/man1/rev.md b/Base/usr/share/man/man1/rev.md
index d2aed40419..a89cc040d5 100644
--- a/Base/usr/share/man/man1/rev.md
+++ b/Base/usr/share/man/man1/rev.md
@@ -5,14 +5,19 @@ rev - reverse lines
 ## Synopsis
 
 ```*sh
-$ rev [files...]
+$ rev [file...]
 ```
 
 ## Description
 
 `rev` reads the specified files line by line, and prints them to standard
 output with each line being reversed characterwise. If no files are specified,
-then `rev` will read from standard input.
+then `rev` will read from standard input. If the file `-` is specified then
+`rev` also reads from standard input.
+
+## Arguments
+
+* `file`: Files to print
 
 ## Examples
 
@@ -39,3 +44,18 @@ $ ls | rev
 oof
 rab
 ```
+
+To print a file 'foo' in reverse followed by the output of `ls` in reverse:
+```sh
+$ cat foo
+foo 1
+foo 2
+$ ls
+foo
+bar
+$ ls | rev foo -
+1 oof
+2 oof
+oof
+rab
+```