xzgrep man page: Document exit statuses.

diff --git a/src/scripts/xzgrep.1 b/src/scripts/xzgrep.1
index 2085095846447a854136dfccdbf44899d7ddf213..e0514b8b8353309b8c1ffb4316b886c00037b2cc 100644 (file)
--- a/src/scripts/xzgrep.1
+++ b/src/scripts/xzgrep.1
@@ -6,7 +6,7 @@
 .\"
 .\" License: GNU GPLv2+
 .\"
-.TH XZGREP 1 "2021-11-13" "Tukaani" "XZ Utils"
+.TH XZGREP 1 "2022-07-19" "Tukaani" "XZ Utils"
 .SH NAME
 xzgrep \- search compressed files for a regular expression
 .SH SYNOPSIS
@@ -78,6 +78,19 @@ The same applies to names
 and
 .BR lzfgrep ,
 which are provided for backward compatibility with LZMA Utils.
+.SH EXIT STATUS
+.TP
+0
+At least one match was found from at least one of the input files.
+No errors occurred.
+.TP
+1
+No matches were found from any of the input files.
+No errors occurred.
+.TP
+>1
+One or more errors occurred.
+It is unknown if matches were found.
 .SH ENVIRONMENT
 .TP
 .B GREP