[Ada] Document new flags in GNATpp

2019-07-03  Bob Duff  <duff@adacore.com>

gcc/ada/

	* doc/gnat_ugn/gnat_utility_programs.rst: Document new flags in
	GNATpp.

From-SVN: r272988

gcc/ada/ChangeLog

+2019-07-03  Bob Duff  <duff@adacore.com>
+
+	* doc/gnat_ugn/gnat_utility_programs.rst: Document new flags in
+	GNATpp.
+
 2019-07-03  Hristian Kirtchev  <kirtchev@adacore.com>
 
 	* binde.adb: Remove with clause for System.OS_Lib.

gcc/ada/doc/gnat_ugn/gnat_utility_programs.rst

@@ -3181,20 +3181,47 @@ Alternatively, you may run the script using the following command line:
      Do not place the keyword ``is`` on a separate line in a subprogram body in
      case if the spec occupies more than one line.
 
+   .. index:: --separate-loop (gnatpp)
+
+
+   :switch:`--separate-loop`
+     Place the keyword ``loop`` in FOR and WHILE loop statements
+     on a separate line.
+
+   .. index:: --no-separate-then (gnatpp)
+
+
+   :switch:`--separate-then`
+     Place the keyword ``then`` in IF statements
+     on a separate line.
+
+   .. index:: --no-separate-loop (gnatpp)
+
+
+   :switch:`--no-separate-loop`
+     Do not place the keyword ``loop`` in FOR and WHILE loop statements
+     on a separate line. This option is
+     incompatible with the :switch:`--separate-loop` option.
+
+   .. index:: --no-separate-then (gnatpp)
+
+
+   :switch:`--no-separate-then`
+     Do not place the keyword ``then`` in IF statements
+     on a separate line. This option is
+     incompatible with the :switch:`--separate-then` option.
+
    .. index:: --separate-loop-then (gnatpp)
 
 
    :switch:`--separate-loop-then`
-     Place the keyword ``loop`` in FOR and WHILE loop statements and the
-     keyword ``then`` in IF statements on a separate line.
+     Equivalent to :switch:`--separate-loop` :switch:`--separate-then`.
 
    .. index:: --no-separate-loop-then (gnatpp)
 
 
    :switch:`--no-separate-loop-then`
-     Do not place the keyword ``loop`` in FOR and WHILE loop statements and the
-     keyword ``then`` in IF statements on a separate line. This option is
-     incompatible with the :switch:`--separate-loop-then` option.
+     Equivalent to :switch:`--no-separate-loop` :switch:`--no-separate-then`.
 
    .. index:: --use-on-new-line (gnatpp)