$ mkdir d
	$ cd d

	$ cat > a
	< a
	< b
	< c

	$ quilt new test.diff
	> Patch patches/test.diff is now on top

	$ quilt add a
	> File a added to patch patches/test.diff

	$ cat > a
	< a 
	< b
	< c 

	$ quilt refresh
	> Warning: trailing whitespace in lines 1,3 of a
	> Refreshed patch patches/test.diff

	$ grep '[ \t]$' patches/test.diff
	> +a 
	> +c 

	$ quilt refresh -U0
	> Warning: trailing whitespace in lines 1,3 of a
	> Refreshed patch patches/test.diff

	$ quilt refresh --strip-trailing-whitespace
	> Removing trailing whitespace from lines 1,3 of a
	> Refreshed patch patches/test.diff

	$ grep '[ \t]$' patches/test.diff

	$ quilt pop -q
	> Removing patch patches/test.diff
	> No patches applied

	$ cat > a
	< a
	< b
	< c

	$ quilt new test2.diff
	> Patch patches/test2.diff is now on top

	$ quilt add a
	> File a added to patch patches/test2.diff

	$ cat > a
	< a 
	< b
	< c 

	$ quilt refresh -c
	> Warning: trailing whitespace in lines 1,3 of a
	> Refreshed patch patches/test2.diff

	$ grep '[ \t]$' patches/test2.diff
	> ! a 
	> ! c 

	$ quilt refresh -C0
	> Warning: trailing whitespace in lines 1,3 of a
	> Refreshed patch patches/test2.diff

	$ quilt refresh -c --strip-trailing-whitespace
	> Removing trailing whitespace from lines 1,3 of a
	> Refreshed patch patches/test2.diff

	$ grep '[ \t]$' patches/test2.diff

	$ quilt pop -q
	> Removing patch patches/test2.diff
	> No patches applied

	$ cd ..
	$ rm -rf d