output.ads, output.adb (Write_Eol): Remove trailing spaces before writing the line.

2007-08-14  Vincent Celier  <celier@adacore.com>

	* output.ads, output.adb (Write_Eol): Remove trailing spaces before
	writing the line.
	(Write_Eol_Keep_Blanks): New procedure to write a line, including
	possible trailing spaces.
	(Output_Source_Line): Call Write_Eol_Keep_Blanks to output a source line

From-SVN: r127456

gcc/ada/output.adb

@@ -254,11 +254,28 @@ package body Output is
 
    procedure Write_Eol is
    begin
+      --  Remove any trailing space
+
+      while Next_Col > 1 and then Buffer (Next_Col - 1) = ' ' loop
+         Next_Col := Next_Col - 1;
+      end loop;
+
       Buffer (Next_Col) := ASCII.LF;
       Next_Col := Next_Col + 1;
       Flush_Buffer;
    end Write_Eol;
 
+   ---------------------------
+   -- Write_Eol_Keep_Blanks --
+   ---------------------------
+
+   procedure Write_Eol_Keep_Blanks is
+   begin
+      Buffer (Next_Col) := ASCII.LF;
+      Next_Col := Next_Col + 1;
+      Flush_Buffer;
+   end Write_Eol_Keep_Blanks;
+
    ----------------------
    -- Write_Erase_Char --
    ----------------------

gcc/ada/output.ads

@@ -6,7 +6,7 @@
 --                                                                          --
 --                                 S p e c                                  --
 --                                                                          --
---          Copyright (C) 1992-2006, Free Software Foundation, Inc.         --
+--          Copyright (C) 1992-2007, Free Software Foundation, Inc.         --
 --                                                                          --
 -- GNAT is free software;  you can  redistribute it  and/or modify it under --
 -- terms of the  GNU General Public License as published  by the Free Soft- --
@@ -95,7 +95,10 @@ package Output is
    --  e.g. CR/LF for DOS, or LF for Unix) to the standard output file.
    --  This routine also empties the line buffer, actually writing it
    --  to the file. Note that Write_Eol is the only routine that causes
-   --  any actual output to be written.
+   --  any actual output to be written. Trailing spaces are removed.
+
+   procedure Write_Eol_Keep_Blanks;
+   --  Similar as Write_Eol, except that trailing spaces are not removed
 
    procedure Write_Int (Val : Int);
    --  Write an integer value with no leading blanks or zeroes. Negative