man: Document \: escapes in nspawn's --tmpfs option

diff --git a/man/systemd-nspawn.xml b/man/systemd-nspawn.xml
index d1e050cb897d4dfea4840d197ebce0f675dcc1ca..f028959fca90107636a1084456408316cc9df245 100644 (file)
--- a/man/systemd-nspawn.xml
+++ b/man/systemd-nspawn.xml
@@ -600,7 +600,10 @@
         otherwise specified). This option is particularly useful for
         mounting directories such as <filename>/var</filename> as
         tmpfs, to allow state-less systems, in particular when
-        combined with <option>--read-only</option>.</para></listitem>
+        combined with <option>--read-only</option>.
+        Backslash escapes are interpreted in the path so
+        <literal>\:</literal> may be used to embed colons in the path.
+        </para></listitem>
       </varlistentry>
 
       <varlistentry>