Change input file format to allow space separated lists,
like LDLIBS=-lfoo -lbar.

The change will cause FTBFS for reverse dependencies.
It should wait the switch to 4.8,
as all packages will need a rebuild anyhow.

============================================================
--- man/dh_ada_library.1	14faa9ba0eaf436fd697827bf9b750c530f08e85
+++ man/dh_ada_library.1	029979dfff000524adbad02b2c26ee049e3f3bcc
@@ -180,9 +180,8 @@ Projects and variables, in addition to t
 .I debian/ada_libraries
 Projects and variables, in addition to those in the command line.
 .\"
-Line breaks are considered as normal spaces.
-.\"
-Any line starting with a dash will be ignored.
+Each line is considered as a new command line argument, with the
+exception that lines starting with a dash or empty will be ignored.
 .\"----------------------------------------------------------------------
 .SH OPTIONS
 Common debhelper command line options and environment variables are
============================================================
--- man/dh_ada_library.fr.1	87a611c5d3b2277518dfac0577abd4ea43a9c30e
+++ man/dh_ada_library.fr.1	9ae285dca8610fbd32ebab4f4847f85274e60c8c
@@ -194,9 +194,9 @@ commande.
 Projets et variables à traiter en plus de ceux mentionnés en ligne de
 commande.
 .\"
-Les fins de ligne sont considérés comme de simples espaces.
-.\"
-Toute ligne débutant par un dièse est ignorée.
+Chaque ligne est traitée comme un nouvel argument en ligne de
+commande, à l’exception près que les lignes vides ou débutant par un
+dièse sont ignorées.
 .\"----------------------------------------------------------------------
 .SH OPTIONS
 Les options en ligne de commande et variables d’environnement communes
============================================================
--- src/dh_ada_library.adb	82f37b62ae695c41d68f2a000d55363bd212f7b2
+++ src/dh_ada_library.adb	756ca301b813669bfe805812958b5e6f463ae848
@@ -18,7 +18,6 @@ with Ada.Strings.Fixed;
 with Ada.Containers.Indefinite_Vectors;
 with Ada.Directories;
 with Ada.Strings.Fixed;
-with Ada.Strings.Maps;
 with Ada.Text_IO;
 
 with GNAT.OS_Lib;
@@ -59,8 +58,6 @@ procedure Dh_Ada_Library is
      := "(generated by " & Ada.Command_Line.Command_Name
      & " during package build)";
 
-   Space_Character_Set : constant Ada.Strings.Maps.Character_Set
-     := Ada.Strings.Maps.To_Set (' ');
    Configuration_File  : constant String := "debian/ada_libraries";
 
    Src_Install_Dir     : constant String := "usr/share/ada/adainclude/";
@@ -784,30 +781,14 @@ procedure Dh_Ada_Library is
       end Process_Argument;
 
       procedure Process_Line (Buffer : in String) is
-         use Ada.Strings.Fixed;
-         First      : Natural;
-         Last       : Natural := Buffer'First - 1;
          Recognized : Boolean;
       begin
          if Buffer'Length > 0 and then Buffer (Buffer'First) /= '#' then
-            while Last < Buffer'Last loop
-               First := Index (Buffer, Space_Character_Set, Last + 1,
-                               Ada.Strings.Outside);
-               exit when First = 0;
-               Last := Index (Buffer, Space_Character_Set, First,
-                              Ada.Strings.Inside);
-               if Last = 0 then
-                  Last := Buffer'Last;
-               else
-                  Last := Last - 1;
-               end if;
-               Process_Argument (Buffer (First .. Last), Recognized);
-               if not Recognized then
-                  raise Usage_Error
-                    with Configuration_File & ": unrecognized argument "
-                    & Buffer (First .. Last);
-               end if;
-            end loop;
+            Process_Argument (Buffer, Recognized);
+            if not Recognized then
+               raise Usage_Error
+                 with Configuration_File & ": unrecognized argument " & Buffer;
+            end if;
          end if;
       end Process_Line;
 
