[PATCH v2] qf: silence quilt refresh a little bit

[Lucas De Marchi]

Since the patches are maintained in a git branch, if we keep refreshing
we keep touching all patches with useless diff. Worse, it may change as
each developer has a different configuration. Force a unified diff
similar to git-diff in order to reduce the noise. Example:

Before (where xxxxxxxxxxx is the name of the directory):
 Index: xxxxxxxxxxx/drivers/gpu/drm/i915/intel_display.h
 ===================================================================
---- xxxxxxxxxxx.orig/drivers/gpu/drm/i915/intel_display.h       2018-03-28 11:27:14.320823971 -0700
-+++ xxxxxxxxxxx/drivers/gpu/drm/i915/intel_display.h    2018-03-28 11:27:14.312823952 -0700
+--- xxxxxxxxxxx.orig/drivers/gpu/drm/i915/intel_display.h       2018-03-28 12:11:51.916788273 -0700
++++ xxxxxxxxxxx/drivers/gpu/drm/i915/intel_display.h    2018-03-28 12:11:51.916788273 -0700

After:

	( Intentionally left blank )

With this the files that need to be updated during a refresh of the
entire pile reduces a lot.

v2: add unified helper

Signed-off-by: Lucas De Marchi <lucas.demarchi at intel.com>
---
 qf | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/qf b/qf
index 4c8a0e9ecc16..1d61b2ad7692 100755
--- a/qf
+++ b/qf
@@ -189,6 +189,10 @@ function quilt_clean_check
 	fi
 }
 
+function quilt_refresh {
+	quilt refresh  --no-timestamps -u -p ab --no-index
+}
+
 qf=$(basename $0)
 
 # first positional argument is the subcommand
@@ -293,7 +297,7 @@ function qf_refresh
 	quiet_pop_all
 
 	while quilt push ; do
-		quilt refresh
+		quilt_refresh
 	done
 
 	# ignore "nothing to commit"
@@ -482,7 +486,7 @@ function qf_wiggle_push
 
 function qf_resolved
 {
-	quilt refresh
+	quilt_refresh
 	quilt header -e
 }
 
-- 
2.14.3