count LOC in .git folders per language

repostats.sh

#!/bin/bash
set -e -u -o pipefail # -x
echo $'Project\tCommit\tBranch\tFiletype\tLines'
for dir in *.git; do
  export GIT_DIR="$dir"
  export PREFIX=$(git for-each-ref --count=1 --sort=committerdate --format=$'%(objectname)\t%(refname)')
  export BRANCH=$(echo -e "${PREFIX}" | cut -d $'\t' -f 1)
  ##### from these filetypes #####
  for filetype in java cs rb go py as php html htm css js json xml conf cnf; do
    echo -n -e "${dir}\t${PREFIX}\t${filetype}\t"
    git --no-pager grep -h "" "${BRANCH}" -- "*.${filetype}" | wc -l || true
  done
done | egrep -v $'\t0$'