Add detection of new or removed files to reproduce.sh

third_party/polymer/v1_0/reproduce.sh

Index: third_party/polymer/v1_0/reproduce.sh
diff --git a/third_party/polymer/v1_0/reproduce.sh b/third_party/polymer/v1_0/reproduce.sh
index 25902371754d6762859e553e0a7c88d3e8a84ef9..6ad8bf52e939e4e847a1b92f46165b0a07701797 100755
--- a/third_party/polymer/v1_0/reproduce.sh
+++ b/third_party/polymer/v1_0/reproduce.sh
@@ -64,3 +64,25 @@ sed -i 's/['"$NBSP"']/\\u00A0/g' components/polymer/polymer-mini.html
 # and apply additional chrome specific patches. NOTE: Where possible create
 # a Polymer issue and/or pull request to minimize these patches.
 patch -p1 < chromium.patch
+
+new=$(git status --porcelain components-chromium | grep '^??' | \
+      cut -d' ' -f2 | egrep '\.(html|js|css)$')
+
+if [[ ! -z "${new}" ]]; then

[dschuyler, 2015/11/21 02:48:48]

nit: I'd have a preference for the build-in test '[' and testing for non-zero: 
e.g.
if [ -n "${new}" ]; then
(same nit for if's below).

[Dan Beam, 2015/11/21 02:56:25]

https://google.github.io/styleguide/shell.xml?showone=Test,_%5B_and_%5B%5B#Te...

+  echo
+  echo 'These files appear to have been added:'
+  echo "${new}" | sed 's/^/  /'
+fi
+
+deleted=$(git status --porcelain components-chromium | grep '^.D' | \
+          cut -d' ' -f3 | egrep '\.(html|js|css)$')
+
+if [[ ! -z "${deleted}" ]]; then
+  echo
+  echo 'These files appear to have been removed:'
+  echo "${deleted}" | sed 's/^/  /'
+fi
+
+if [[ ! -z "${new}${deleted}" ]]; then
+  echo
+fi