Add a new test for filenames with spaces.

t/clean.do

@@ -1,3 +1,4 @@
-redo example/clean curse/clean deps/clean
+redo example/clean curse/clean deps/clean "space dir/clean"
 rm -f c c.c c.c.c c.c.c.b c.c.c.b.b d
-rm -f hello [by]ellow *.o *~ .*~ CC LD
+rm -f hello [by]ellow *.o *~ .*~ CC LD passfail
+

t/space dir/.gitignore

@@ -0,0 +1,2 @@
+/space file
+/space 2

t/space dir/clean.do

@@ -0,0 +1 @@
+rm -f *~ .*~ "space 2"

t/space dir/space 2.do

@@ -0,0 +1 @@
+echo $$

t/space dir/space file.do

@@ -0,0 +1 @@
+redo-ifchange "space 2"

t/space dir/test.do

@@ -0,0 +1,6 @@
+redo "space file"
+F1="$(cat "space 2")"
+redo "../space dir/space file"
+F2="$(cat "space 2")"
+[ "$F1" = "$F2" ] || exit 2
+[ -n "$F1" ] || exit 3

t/test.do

@@ -1,4 +1,6 @@
 redo-ifchange all
 ./hello >&2
-redo deltest deltest2 test.args test2.args passfailtest curse/test deps/test
+redo deltest deltest2 test.args test2.args passfailtest \
+	curse/test deps/test "space dir/test"
+