git-check-non-tracking

#!/bin/bash -e
## Check for non-tracking branches not fully merged to HEAD.
## if argument -p is given: does not exit with a failure

## read input, display help if necessary
if [[ "$@" == *--help* ]]; then
    cat<<EOF
 Check for any non-tracking branches

 This command checks for non-tracking branches that are not fully
 merged to a tracking branch. This is part of a series of checks
 used to determine whether it is safe to remove a submodule.

 Usage:
    git check-non-tracking [-p]

    -p: do not raise an error
EOF
    exit 0;
fi

while getopts ":p" opt; do
    case $opt in
	p)
	    p=1
	    #echo "-p was triggered!" >&2
	    ;;
	\?)
	    # ignore this
	    #echo "Invalid option: -$OPTARG" >&2
	    ;;
  esac
done

## from the git mailinglist:
function git
{
    LC_MESSAGES=C command git "$@"
} 
export git

## cycle all branches
tmp=`git branch -vv --no-color --no-merged 2> /dev/null`
if [[ "$tmp" ]]; then
    while read line; do
	##echo "$line"
	branch=`expr "$line" : '\** *\([^ ]*\)'`
	##echo "$branch"
	remote=`expr "$line" : '.*\[\(.*\)\]'` && continue
	## this might be a a non-tracking branch that is not fully merged to some other tracking branch
	if (git branch -vv --no-color --contains testbranch) | grep \\[.*/.*\\] -q; then
	    continue
	else 
	    nontracking="$nontracking $branch is not a remote tracking branch and is not fully merged any tracking branch.
"
	fi
    done <<< "$tmp"
fi

if [ "$nontracking" ]; then
    if [[ $p -ne 1 ]]; then
	echo >&2 -n "Error in $PWD:
$nontracking"
	exit 1
    fi
    echo -n "In $PWD:
$nontracking"
fi