Add an environment variables section to the man

.gitignore

@@ -45,8 +45,6 @@ compile_commands.json
 docs/api
 client/X11/xfreerdp.1
 client/X11/xfreerdp.1.xml
-client/X11/xfreerdp-channels.1.xml
-client/X11/xfreerdp-examples.1.xml
 
 # Mac OS X
 .DS_Store

client/X11/.gitignore

@@ -1,2 +1,2 @@
-*.xml
+xfreerdp-argument.1.xml
 generate_argument_docbook

client/X11/CMakeLists.txt

@@ -93,16 +93,19 @@ if(WITH_MANPAGES)
 
 		add_custom_command(OUTPUT xfreerdp.1
 					COMMAND generate_argument_docbook
-					COMMAND ${CMAKE_COMMAND} -E copy 
+					COMMAND ${CMAKE_COMMAND} -E copy
 						${CMAKE_CURRENT_SOURCE_DIR}/xfreerdp-channels.1.xml ${CMAKE_CURRENT_BINARY_DIR}
-					COMMAND ${CMAKE_COMMAND} -E copy 
+					COMMAND ${CMAKE_COMMAND} -E copy
 						${CMAKE_CURRENT_SOURCE_DIR}/xfreerdp-examples.1.xml ${CMAKE_CURRENT_BINARY_DIR}
+					COMMAND ${CMAKE_COMMAND} -E copy
+						${CMAKE_CURRENT_SOURCE_DIR}/xfreerdp-envvar.1.xml ${CMAKE_CURRENT_BINARY_DIR}
 					COMMAND ${XSLTPROC_EXECUTABLE} ${DOCBOOKXSL_DIR}/manpages/docbook.xsl xfreerdp.1.xml
 					WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}
 					DEPENDS 
 						${CMAKE_CURRENT_BINARY_DIR}/xfreerdp.1.xml 
 						${CMAKE_CURRENT_SOURCE_DIR}/xfreerdp-examples.1.xml 
 						${CMAKE_CURRENT_SOURCE_DIR}/xfreerdp-channels.1.xml 
+						${CMAKE_CURRENT_SOURCE_DIR}/xfreerdp-envvar.1.xml
 						generate_argument_docbook)
 
 		add_custom_target(xfreerdp.manpage ALL

client/X11/xfreerdp-envvar.1.xml

@@ -0,0 +1,15 @@
+<refsect1>
+	<title>Environment variables</title>
+
+	<variablelist>
+		<varlistentry>
+			<term>wlog environment variable</term>
+			<listitem>
+				<para>xfreerdp uses wLog as its log facility, you can refer to the
+				corresponding man page (wlog(1)) for more informations. Arguments passed
+				via the <replaceable>/log-level</replaceable> or <replaceable>/log-filters</replaceable>
+				have precedence over the environment variables.</para>
+			</listitem>
+		</varlistentry>
+	</variablelist>
+</refsect1>

client/X11/xfreerdp.1.xml.in

@@ -4,6 +4,7 @@ PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
 "http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd" [
 	<!ENTITY syntax SYSTEM "xfreerdp-argument.1.xml">
 	<!ENTITY channels SYSTEM "xfreerdp-channels.1.xml">
+	<!ENTITY envvar SYSTEM "xfreerdp-envvar.1.xml">
 	<!ENTITY examples SYSTEM "xfreerdp-examples.1.xml">
 	]
 >
@@ -49,6 +50,8 @@ PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
 
 	&channels;
 
+	&envvar;
+
 	&examples;
 
 	<refsect1>