Initial commit of git branch cleaner

git_tidy_local_branches.sh

@@ -0,0 +1,31 @@
+#!/usr/bin/env bash
+
+# first we prune origin to ensure our local list of remote branches is up to date
+git remote prune origin
+
+GONE_BRANCHES=$(git branch -vv | grep 'origin/.*: gone]' | awk '{print $1}')
+echo "[DEBUG]: $GONE_BRANCHES"
+
+if [ -z "$GONE_BRANCHES" ]; then
+  echo "Could not find any local branches where the remote is gone"
+  exit 0
+fi
+
+if [ "$1" = "-f" ]; then
+  echo "$GONE_BRANCHES" | xargs git branch -D
+#TODO: Do this in a loop so that we can provide output on which branches failed to delete
+else
+  echo "$GONE_BRANCHES" | xargs git branch -d
+  if [ $? -ne 0 ]; then
+    FAILED_TO_DELETE="true"
+  fi
+fi
+
+if [ "$FAILED_TO_DELETE" = "true" ]; then
+#   echo "error: Some local branches are not fully merged."
+  echo
+  echo "If you are sure you want to delete all branches above, run 'git-glean -f'"
+fi
+
+# Handy script when following GitFlow and rebasing, since `git branch --merged master` will never list
+# a rebased but merged branch (as their commit history differs).