+ echo "$(git branch -vv | cut -d ' ' -f2)"
+}
+
+#this had a -> in it at one point for not matching, didn't it?
+# this reports the upstream branch for the current repo.
+##function parent_branch_name()
+##{
+ ##echo "$(git branch -vv | grep \* | cut -d ' ' -f2)"
+##}
+
+# a helpful method that reports the git branch for the current directory's
+# git repository.
+function my_branch_name()
+{
+ echo "$(git branch -vv | grep '\*' | cut -d ' ' -f2)"
+}
+
+# reports the status of the branch by echoing one of these values:
+# okay: up to date and everything is good.
+# needs_pull: this branch needs to be pulled from origins.
+# needs_push: there are unsaved changes on this branch to push to remote store.
+# diverged: the branches diverged and are going to need a merge.
+# reference: https://stackoverflow.com/questions/3258243/check-if-pull-needed-in-git
+function check_branch_state()
+{
+ local branch="$1"; shift
+
+ if [ -z "$branch" ]; then
+ echo "No branch was passed to check branch state."
+ return 1
+ fi
+
+ local to_return=120 # unknown issue.
+
+ local local_branch=$(git rev-parse @)
+ local remote_branch=$(git rev-parse "$branch")
+ local merge_base=$(git merge-base @ "$branch")
+
+ local to_echo=
+ if [ "$local_branch" == "$remote_branch" ]; then
+ to_echo="okay"
+ elif [ "$local_branch" == "$merge_base" ]; then
+ to_echo="needs_pull"
+ elif [ "$remote_branch" == "$merge_base" ]; then
+ to_echo="needs_push"
+ else
+ to_echo="diverged"
+ fi
+
+ echo -n "$to_echo"
+
+ return $to_return
+}
+
+# only shows the branch state if it's not okay.
+# note that this is not the same as a conditional branch (ha ha).
+function show_branch_conditionally()
+{
+ local this_branch="$1"; shift
+
+ local state=$(check_branch_state "$this_branch")
+ if [ "$state" != "okay" ]; then
+ echo "=> branch '$this_branch' state is not clean: $state"
+ fi
+}
+
+# the git update process just gets more and more complex when you bring in
+# branches, so we've moved this here to avoid having a ton of code in the
+# other methods.
+function do_revctrl_careful_update()
+{
+ local directory="$1"; shift
+ pushd "$directory" &>/dev/null
+ exit_on_error "changing to directory: $directory"
+
+ if [ ! -d ".git" ]; then
+ # not a git project, so just boil this down to a getem action.
+ popd &>/dev/null
+ log_feisty_meow_event "skipping careful part and doing simple update on non-git repository: $directory"
+ do_revctrl_simple_update "$directory"
+ return $?
+ fi
+
+#hmmm: another piece of reusable code, to process the directory for printing.
+ # make a nice echoer since we want to use it inside conditions below.
+ local nicedir="$directory"
+ if [ $nicedir == "." ]; then
+ nicedir=$(\pwd)
+ fi
+ local blatt_report="echo -e \ncarefully retrieving '$nicedir'..."
+ $blatt_report
+
+ local this_branch="$(my_branch_name)"
+
+ show_branch_conditionally "$this_branch"
+
+ # first update all our remote branches to their current state from the repos.
+ git remote update | $TO_SPLITTER
+ promote_pipe_return 0
+ exit_on_error "git remote update"
+
+ show_branch_conditionally "$this_branch"
+
+ # this code is now doing what i have to do when i repair the repo. and it seems to be good so far.
+ # note that we allow the local branch to be merged with its remote counterpart; otherwise we would
+ # miss changes that happened elsewhere which should be seen in our local copy.
+ local branch_list=$(all_branch_names)
+ local bran
+ for bran in $branch_list; do
+ log_feisty_meow_event "synchronizing remote branch: $bran"
+ git checkout "$bran" | $TO_SPLITTER
+ promote_pipe_return 0
+ exit_on_error "git switching checkout to remote branch: $bran"
+
+ show_branch_conditionally "$this_branch"
+
+ remote_branch_info=$(git ls-remote --heads origin $bran 2>/dev/null)
+ if [ ! -z "$remote_branch_info" ]; then
+ # we are pretty sure the remote branch does exist.
+ git pull --tags origin "$bran" | $TO_SPLITTER
+ promote_pipe_return 0