xz: Update man page for new --filters-help option.

diff --git a/src/xz/xz.1 b/src/xz/xz.1
index d8025a275d73d5f770079f9e633c4adb68995332..f7e5ac491eec1eaf1276f1941fd8101b4ee84ef6 100644 (file)
--- a/src/xz/xz.1
+++ b/src/xz/xz.1
@@ -1406,6 +1406,16 @@ For example, when compressing an archive with executable files
 followed by text files, the executable part could use a filter
 chain with a BCJ filter and the text part only the LZMA2 filter.
 .TP
+.B \-\-filters-help
+Display a help message describing how to specify presets and
+custom filter chains in the
+.B \-\-filters
+and
+.BI \-\-filters1= filters
+\&...\&
+.BI \-\-filters9= filters
+options, and exit successfully.
+.TP
 \fB\-\-lzma1\fR[\fB=\fIoptions\fR]
 .PD 0
 .TP