diff --git a/conf/Makefile b/conf/Makefile
new file mode 100644
index 0000000..2f00ade
--- /dev/null
+++ b/conf/Makefile
@@ -0,0 +1,4 @@
+TOPDIR = ..
+
+include $(TOPDIR)/make/proj.mk
+include $(MODDIR)/make/dirs.mk
diff --git a/conf/profile/Makefile b/conf/profile/Makefile
new file mode 100644
index 0000000..6a9f784
--- /dev/null
+++ b/conf/profile/Makefile
@@ -0,0 +1,4 @@
+TOPDIR = ../..
+
+include $(TOPDIR)/make/proj.mk
+include $(MODDIR)/make/profile.mk
diff --git a/scripts/trim-src.py b/scripts/trim-src.py
index 8508e08..4c54039 100644
--- a/scripts/trim-src.py
+++ b/scripts/trim-src.py
@@ -29,16 +29,15 @@ class TrimSourceCmd(jwutils.Cmd):
         for path in args.input:
             with open(path, 'r+') as infile:
                 contents = infile.read()
+                name = os.path.basename(path)
+                ext = os.path.splitext(path)[1]
 
                 # TODO: support other types in this block
                 mime = magic.detect_from_content(contents).mime_type
-                if mime != 'text/plain':
-                    raise Exception("unsupported file type", mime, "of", path)
-                name = os.path.basename(path)
-                ext = os.path.splitext(path)[1]
-                if name != 'Makefile' and ext != '.mk':
-                    raise Exception("unsupported file type of", path)
-                mime = 'text/x-makefile'
+                if mime in [ 'text/plain', 'application/x-empty' ]:
+                    if name != 'Makefile' and ext != '.mk':
+                        raise Exception("unsupported file type of", path)
+                    mime = 'text/x-makefile'
 
                 out = self._run(args, mime, path, contents)
                 infile.seek(0)
@@ -55,6 +54,8 @@ class CmdBeautify(TrimSourceCmd):
         return p
 
     def _processTextXMakefile(self, args, mime, path, contents):
+
+        # -- assignments
         r = ''
         indent = args.indent_assignments
         for line in contents.splitlines(True):
@@ -63,6 +64,12 @@ class CmdBeautify(TrimSourceCmd):
                 r += line
                 continue
             r += misc.pad(m.group(1), indent - len(m.group(2))) + m.group(2) + m.group(3) + ' ' + m.group(4) + '\n'
+
+        # -- trailing white space
+        contents = r
+        r = ''
+        for line in contents.splitlines(False):
+            r += line.rstrip() + '\n'
         return r
 
     def _run(self, args, mime, path, contents):
diff --git a/test/trim-src/Makefile b/test/trim-src/Makefile
index 2ea8bf2..0ed9934 100644
--- a/test/trim-src/Makefile
+++ b/test/trim-src/Makefile
@@ -2,7 +2,7 @@ TOPDIR = ../..
 
 MAKEFLAGS += --no-builtin-rules
 
-INPUT = test.mk
+INPUT = test.mk      
 EXE = $(TOPDIR)/scripts/trim-src.py
 EXE_ARGS = beautify $(INPUT)