bash-mirror

#!/bin/bash

IFS= read -rd '' index_filter <<\Command
git ls-files -s | \
 awk '
  BEGIN { FS="\t" }

  $2 ~ /(^|\/)-i$/          {next}
  $2 ~ /Makefile$/          {next}
  $2 ~ /[#~]$/              {next}
  $2 ~ /\.(0|aux|bt|bts)$/  {next}
  $2 ~ /\.(cp|cps|dvi|fn)$/ {next}
  $2 ~ /\.(fns|html)$/      {next}
  $2 ~ /\.(info|kylog|pg)$/ {next}
  $2 ~ /\.(old|orig|save)$/ {next}
  $2 ~ /\.(ps|rw|rws)$/     {next}
  $2 ~ /\.(toc|tp|vr|vrs)$/ {next}
  $2 ~ /\/[._]/             {next}
  $2 ~ /^_/                 {next}
  $2 ~ /^autom4te\.cache\// {next}
  $2 ~ /^configure$/        {next}
  $2 ~ /^parser-built$/     {next}
  $2 ~ /^y\.tab\.[ch]$/     {next}

  1
  ' | \
 GIT_INDEX_FILE=$GIT_INDEX_FILE.new git update-index --index-info && \
 mv "$GIT_INDEX_FILE.new" "$GIT_INDEX_FILE"
Command

IFS= read -rd '' commit_filter <<\Command
git_commit_non_empty_tree "$@"
Command

IFS= read -rd '' msg_filter <<\Command
cat

chlog=$(
{
git log -p -n1 "$GIT_COMMIT" -- CWRU/CWRU.chlog | \
 awk '/^@@/,0{if(/^\+/){print substr($0, 2)}}'
} 2>/dev/null
)

if [ -n "$chlog" ]; then
    printf '\n%s\n' "$chlog"
fi
Command

git filter-branch -f \
 --index-filter "$index_filter" \
 --commit-filter "$commit_filter" \
 HEAD
git filter-branch -f \
 --msg-filter "$msg_filter" \
 HEAD