Analyze shell history; zsh edition + alias expansion

log.txt

 686 git commit -v
 365 git commit -av
 169 git checkout -b
 160 git push -u
 111 nocorrect mkdir -p
 102 nocorrect rm -rf
  89 nocorrect rm -r
  88 git push -f
  79 git branch -D
  71 git push origin
  61 git git l
  43 bundle exec cucumber
  36 git remote add
  31 bundle exec rspec
  28 echo "<a class='foo'
  27 git status -sb
  27 git add -A
  21 git rebase -i
  19 nocorrect heroku run
  19 heroku run console
  18 git reset --hard
  17 git branch -M
  17 gem search -r
  16 knife cluster ssh
  15 noglob find .
  15 nocorrect heroku config:set
  15 git push staging
  15 cat ~/Downloads/Analytics Evently
  14 noglob rake import:delete
  14 nocorrect rm -fr

script.sh

setopt SH_WORD_SPLIT 2>/dev/null

_aliases="$(alias -Lr 2>/dev/null || alias)"
_history="$(history -10000 2>/dev/null || history)"

alias_for() {
  [[ $1 =~ '[[:punct:]]' ]] && return
  local found="$( echo "$_aliases" | sed -nE "/^alias ${1}='?(.+)/s//\\1/p" )"
  [[ -n $found ]] && echo "${found%\'}"
}

_git_aliases="$(git config --get-regex 'alias\..*')"

git_alias_for() {
  [[ $1 =~ '[[:punct:]]' ]] && return
  echo "$_git_aliases" | sed -nE "/^alias.${1} ([^!].+)/s//\\1/p"
}

expand_command_line() {
  shift
  while [[ $1 =~ '=' ]]; do
    shift
  done
  [[ $# -eq 0 ]] && return
  local found_alias="$(alias_for $1)"
  if [[ -n $found_alias ]]; then
    shift
    expand_command $found_alias "$@"
  else
    expand_command "$@"
  fi
}

expand_command() {
  if [[ ( $1 = git || $1 = hub ) && $# -gt 1 ]]; then
    local found_git_alias="$(git_alias_for $2)"
    if [[ -n $found_git_alias ]]; then
      shift 2
      expand_command git $found_alias "$@"
    else
      echo git $2 $3
    fi
  else
    echo $1 $2 $3
  fi
}

{ echo "$_history" | while read cmd; do
  expand_command_line $cmd
done
} | sort | uniq -c | sort -k1 -rn | head -30