more moves

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diff --git a/.local/lib/git-core/git-subrepo b/.local/lib/git-core/git-subrepo
deleted file mode 100755
index 3865570..0000000
--- a/.local/lib/git-core/git-subrepo
+++ /dev/null
@@ -1,1897 +0,0 @@
-#!/usr/bin/env bash
-#
-#
-# Copyright 2013-2020 - Ingy döt Net <ingy@ingy.net>
-#
-
-
-# Exit on any errors:
-set -e
-
-# Import Bash+ helper functions:
-SOURCE="$BASH_SOURCE"
-while [[ -h $SOURCE ]]; do
-  DIR="$( cd -P "$( dirname "$SOURCE" )" && pwd )"
-  SOURCE="$(readlink "$SOURCE")"
-  [[ $SOURCE != /* ]] && SOURCE="$DIR/$SOURCE"
-done
-SOURCE_DIR="$(dirname "$SOURCE")"
-
-if [[ -z "$GIT_SUBREPO_ROOT" ]]; then
-  # If `make install` installation used:
-  source "${SOURCE_DIR}/git-subrepo.d/bash+.bash"
-else
-  # If `source .rc` method used:
-  source "${SOURCE_DIR}/../ext/bashplus/lib/bash+.bash"
-fi
-bash+:import :std can
-
-VERSION=0.4.1
-REQUIRED_GIT_VERSION=2.7.0
-GIT_TMP="$(git rev-parse --git-common-dir 2> /dev/null || echo .git)/tmp"
-
-# `git rev-parse` turns this into a getopt parser and a command usage message:
-GETOPT_SPEC="\
-git subrepo <command> <arguments> <options>
-
-Commands:
-  clone     Clone a remote repository into a local subdirectory
-  init      Turn a current subdirectory into a subrepo
-  pull      Pull upstream changes to the subrepo
-  push      Push local subrepo changes upstream
-
-  fetch     Fetch a subrepo's remote branch (and create a ref for it)
-  branch    Create a branch containing the local subrepo commits
-  commit    Commit a merged subrepo branch into the mainline
-
-  status    Get status of a subrepo (or all of them)
-  clean     Remove branches, remotes and refs for a subrepo
-  config    Set subrepo configuration properties
-
-  help      Documentation for git-subrepo (or specific command)
-  version   Display git-subrepo version info
-  upgrade   Upgrade the git-subrepo software itself
-
-See 'git help subrepo' for complete documentation and usage of each command.
-
-Options:
---
-h           Show the command summary
-help        Help overview
-version     Print the git-subrepo version number
-
-a,all       Perform command on all current subrepos
-A,ALL       Perform command on all subrepos and subsubrepos
-b,branch=   Specify the upstream branch to push/pull/fetch
-e,edit      Edit commit message
-f,force     Force certain operations
-F,fetch     Fetch the upstream content first
-M,method=   Method when you join, valid options are 'merge' or 'rebase'
-            Default is 'merge'
-m,message=  Specify a commit message
-r,remote=   Specify the upstream remote to push/pull/fetch
-s,squash    Squash commits on push
-u,update    Add the --branch and/or --remote overrides to .gitrepo
-
-q,quiet     Show minimal output
-v,verbose   Show verbose output
-d,debug     Show the actual commands used
-x,DEBUG     Turn on -x Bash debugging
-"
-
-#------------------------------------------------------------------------------
-# Top level function:
-#------------------------------------------------------------------------------
-main() {
-  # Define global variables:
-  local command=                # Subrepo subcommand to run
-  local command_arguments=()    # Command args after getopt parsing
-  local commit_msg_args=()      # Arguments to show in the commit msg
-  local subrepos=()             # List of multiple subrepos
-
-  local all_wanted=false        # Apply command to all subrepos
-  local ALL_wanted=false        # Apply command to all subrepos and subsubrepos
-  local force_wanted=false      # Force certain operations
-  local fetch_wanted=false      # Fetch requested before a command
-  local squash_wanted=false     # Squash commits on push
-  local update_wanted=false     # Update .gitrepo with --branch and/or --remote
-
-  local quiet_wanted=false      # Output should be quiet
-  local verbose_wanted=false    # Output should be verbose
-  local debug_wanted=false      # Show debug messages
-
-  local subdir=                 # Subdirectory of the subrepo being used
-  local subref=                 # Valid git ref format of subdir
-  local gitrepo=                # Path to .gitrepo file
-  local worktree=               # Worktree created by 'git worktree'
-  local start_pwd=$(pwd)        # Store the original directory
-
-  local original_head_commit=   # HEAD commit id at start of command
-  local original_head_branch=   # HEAD ref at start of command
-  local upstream_head_commit=   # HEAD commit id from a subrepo fetch
-
-  local subrepo_remote=         # Remote url for subrepo's upstream repo
-  local subrepo_branch=         # Upstream branch to clone/push/pull
-  local subrepo_commit=         # Upstream HEAD from previous clone/pull
-  local subrepo_parent=         # Local commit from before previous clone/pull
-  local subrepo_former=         # A retired gitrepo key that might still exist
-
-  local refs_subrepo_branch=    # A subrepo ref -> commit of branch/pull command
-  local refs_subrepo_commit=    # A subrepo ref -> commit last merged
-  local refs_subrepo_fetch=     # A subrepo ref -> FETCH_HEAD after fetch
-  local refs_subrepo_push=      # A subrepo ref -> branch after push
-
-  local override_remote=        # Remote specified with -r
-  local override_branch=        # Remote specified with -b
-
-  local edit_wanted=false       # Edit commit message using -e
-  local wanted_commit_message=  # Custom commit message using -m
-
-  local join_method=            # Current join method (rebase/merge)
-
-  local FAIL=true               # Flag for RUN: fail on error
-  local OUT=false               # Flag for RUN: put output in $output
-  local TTY=false               # Flag for RUN: print output directly
-  local SAY=true                # Flag for RUN: print command for verbose
-  local EXEC=false              # Flag for RUN: run subprocess
-  local OK=true                 # Flag that commands have succeeded
-  local CODE=0                  # Failure reason code
-  local INDENT=                 # Verbose indentation
-
-  local git_version=            # Git version in use
-
-  # Check environment and parse CLI options:
-  assert-environment-ok
-
-  # Parse and validate command options:
-  get-command-options "$@"
-
-  # Make sure repo is in the proper state:
-  assert-repo-is-ready
-
-  command-init
-
-  if $all_wanted && [[ ! $command =~ ^(help|status)$ ]]; then
-    # Run the command on all subrepos
-    local args=( "${command_arguments[@]}" )
-    get-all-subrepos
-    for subdir in ${subrepos[*]}; do
-      command-prepare
-      subrepo_remote=
-      subrepo_branch=
-      command_arguments=( "$subdir" "${args[@]}" )
-      "command:$command"
-    done
-  else
-    # Run the command on a specific subrepo
-    command-prepare
-    "command:$command"
-  fi
-}
-
-#------------------------------------------------------------------------------
-# API command functions.
-#
-# Most of these commands call a subrepo:$command function to do the actual
-# work. The user facing output (via `say`) is done up here. The
-# subrepo:* worker functions are meant to be called internally and don't print
-# info to the user.
-#------------------------------------------------------------------------------
-
-# `git subrepo clone <url> [<subdir>]` command:
-command:clone() {
-  command-setup +subrepo_remote subdir:guess-subdir
-
-  # Clone (or reclone) the subrepo into the subdir:
-  local reclone_up_to_date=false
-  subrepo:clone
-  if "$reclone_up_to_date"; then
-    say "Subrepo '$subdir' is up to date."
-    return
-  fi
-
-  # Successful command output:
-  local re=
-  $force_wanted && re=re
-  local remote="$subrepo_remote"
-  say "Subrepo '$remote' ($subrepo_branch) ${re}cloned into '$subdir'."
-}
-
-# `git subrepo init <subdir>` command:
-command:init() {
-  command-setup +subdir
-  local remote="${subrepo_remote:=none}"
-  local branch="${subrepo_branch:=master}"
-
-  # Init new subrepo from the subdir:
-  subrepo:init
-  if OK; then
-    if [[ $remote == none ]]; then
-      say "Subrepo created from '$subdir' (with no remote)."
-    else
-      say "Subrepo created from '$subdir' with remote '$remote' ($branch)."
-    fi
-  else
-    die "Unknown init error code: '$CODE'"
-  fi
-  return 0
-}
-
-# `git subrepo pull <subdir>` command:
-command:pull() {
-  command-setup +subdir
-
-  subrepo:pull
-  if OK; then
-    say "Subrepo '$subdir' pulled from '$subrepo_remote' ($subrepo_branch)."
-  elif [[ $CODE -eq -1 ]]; then
-    say "Subrepo '$subdir' is up to date."
-  elif [[ $CODE -eq 1 ]]; then
-    error-join
-    return "$CODE"
-  else
-    die "Unknown pull error code: '$CODE'"
-  fi
-  return 0
-}
-
-# `git subrepo push <subdir>` command:
-command:push() {
-  local branch=
-  command-setup +subdir branch
-
-  subrepo:push
-  if OK; then
-    say "Subrepo '$subdir' pushed to '$subrepo_remote' ($subrepo_branch)."
-  elif [[ $CODE -eq -2 ]]; then
-    say "Subrepo '$subdir' has no new commits to push."
-  elif [[ $CODE -eq 1 ]]; then
-    error-join
-    return "$CODE"
-  else
-    die "Unknown push error code: '$CODE'"
-  fi
-  return 0
-}
-
-# `git subrepo fetch <subdir>` command
-command:fetch() {
-  command-setup +subdir
-  if [[ $subrepo_remote == "none" ]]; then
-    say "Ignored '$subdir', no remote."
-  else
-    subrepo:fetch
-    say "Fetched '$subdir' from '$subrepo_remote' ($subrepo_branch)."
-  fi
-}
-
-# `git subrepo branch <subdir>` command:
-command:branch() {
-  command-setup +subdir
-  if $fetch_wanted; then
-    CALL subrepo:fetch
-  fi
-
-  local branch="subrepo/$subref"
-  if $force_wanted; then
-    # We must make sure that the worktree is removed as well
-    worktree="$GIT_TMP/$branch"
-    git:delete-branch "$branch"
-  fi
-
-  if git:branch-exists "$branch"; then
-    error "Branch '$branch' already exists. Use '--force' to override."
-  fi
-
-  # Create the subrepo branch:
-  subrepo:branch
-
-  say "Created branch '$branch' and worktree '$worktree'."
-}
-
-# `git subrepo commit <subdir>` command
-command:commit() {
-  command-setup +subdir subrepo_commit_ref
-
-  if "$fetch_wanted"; then
-    CALL subrepo:fetch
-  fi
-  git:rev-exists "$refs_subrepo_fetch" ||
-    error "Can't find ref '$refs_subrepo_fetch'. Try using -F."
-  upstream_head_commit="$(git rev-parse "$refs_subrepo_fetch")"
-
-  [[ -n $subrepo_commit_ref ]] ||
-    subrepo_commit_ref="subrepo/$subref"
-  subrepo:commit
-
-  say "Subrepo commit '$subrepo_commit_ref' committed as"
-  say "subdir '$subdir/' to branch '$original_head_branch'."
-}
-
-# `git subrepo status [<subdir>]` command:
-command:status() {
-  subrepo:status | ${GIT_SUBREPO_PAGER}
-}
-
-status-refs() {
-  local output=
-  while read line; do
-    [[ $line =~ ^([0-9a-f]+)\ refs/subrepo/$subref/([a-z]+) ]] || continue
-    local sha1=; sha1="$(git rev-parse --short "${BASH_REMATCH[1]}")"
-    local type="${BASH_REMATCH[2]}"
-    local ref="refs/subrepo/$subref/$type"
-    if [[ $type == branch ]]; then
-      output+="    Branch Ref:    $sha1 ($ref)"$'\n'
-    elif [[ $type == commit ]]; then
-      output+="    Commit Ref:    $sha1 ($ref)"$'\n'
-    elif [[ $type == fetch ]]; then
-      output+="    Fetch Ref:     $sha1 ($ref)"$'\n'
-    elif [[ $type == pull ]]; then
-      output+="    Pull Ref:      $sha1 ($ref)"$'\n'
-    elif [[ $type == push ]]; then
-      output+="    Push Ref:      $sha1 ($ref)"$'\n'
-    fi
-  done < <(git show-ref)
-  if [[ -n $output ]]; then
-    printf "  Refs:\n$output"
-  fi
-}
-
-# `git subrepo clean <subdir>` command
-command:clean() {
-  command-setup +subdir
-  local clean_list=()
-  subrepo:clean
-  for item in "${clean_list[@]}"; do
-    say "Removed $item."
-  done
-}
-
-# Wrap git config $gitrepo
-command:config() {
-  command-setup +subdir +config_option config_value
-  o "Update '$subdir' configuration with $config_option=$config_value"
-
-  if [[ ! $config_option =~ ^(branch|cmdver|commit|method|remote|version)$ ]]; then
-    error "Option $config_option not recognized"
-  fi
-
-  if [[ -z $config_value ]]; then
-    OUT=true RUN git config --file="$gitrepo" "subrepo.$config_option"
-    say "Subrepo '$subdir' option '$config_option' has value '$output'."
-    return
-  fi
-
-  if ! $force_wanted; then
-    # Only allow changing method without force
-    if [[ ! $config_option == "method" ]]; then
-      error "This option is autogenerated, use '--force' to override."
-    fi
-  fi
-
-  if [[ $config_option == "method" ]]; then
-    if [[ ! $config_value =~ ^(merge|rebase)$ ]]; then
-      error "Not a valid method. Valid options are 'merge' or 'rebase'."
-    fi
-  fi
-
-  RUN git config --file="$gitrepo" "subrepo.$config_option" "$config_value"
-  say "Subrepo '$subdir' option '$config_option' set to '$config_value'."
-}
-
-
-# Launch the manpage viewer:
-command:help() {
-  source "${SOURCE_DIR}/git-subrepo.d/help-functions.bash"
-  local cmd="${command_arguments[0]}"
-  if [[ -n $cmd ]]; then
-    if can "help:$cmd"; then
-      "help:$cmd"
-      echo
-    else
-      err "No help found for '$cmd'"
-    fi
-  elif $all_wanted; then
-    help:all
-  else
-    exec git help subrepo
-  fi
-  msg_ok=0
-}
-
-# Print version info.
-# TODO: Add short commit id after version.
-#       Will need to get it from repo or make install can put it somewhere.
-command:version() {
-  cat <<...
-git-subrepo Version: $VERSION
-Copyright 2013-2020 Ingy döt Net
-https://github.com/ingydotnet/git-subrepo
-$BASH_SOURCE
-Git Version: $git_version
-
-...
-  :
-}
-
-command:upgrade() {
-  local path="$0"
-  if [[ $path =~ ^/ && $path =~ ^(.*/git-subrepo)/lib/git-subrepo$ ]]; then
-    local subrepo_root="${BASH_REMATCH[1]}"
-    (
-      o "Change directory to '$subrepo_root'."
-      cd "${BASH_REMATCH[1]}"
-
-      local branch="$(git rev-parse --abbrev-ref HEAD)"
-      if [[ $branch != master ]]; then
-        error "git-subrepo repo is not on the 'master' branch"
-      fi
-
-      o "'git pull' latest version."
-      RUN git pull --ff-only
-
-      say "git-subrepo is up to date."
-    )
-  else
-    die "\
-
-Sorry. Your installation can't use the 'git subrepo upgrade' command. The
-command only works if you installed git subrepo by adding
-'/path/to/git-subrepo' to your PATH.
-
-If you used 'make install' to install git-subrepo, then just do this:
-
-    cd /path/to/git-subrepo
-    git pull
-    make install
-
-"
-  fi
-}
-
-#------------------------------------------------------------------------------
-# Subrepo command worker functions.
-#------------------------------------------------------------------------------
-
-# Clone by fetching remote content into our subdir:
-subrepo:clone() {
-  re="$1"
-
-  FAIL=false RUN git rev-parse HEAD
-  if ! OK; then
-    error "You can't clone into an empty repository"
-  fi
-
-  # Turn off force unless really a reclone:
-  if $force_wanted && [[ ! -f $gitrepo ]]; then
-    force_wanted=false
-  fi
-
-  if $force_wanted; then
-    o "--force indicates a reclone."
-    CALL subrepo:fetch
-    read-gitrepo-file
-    o "Check if we already are up to date."
-    if [[ $upstream_head_commit == $subrepo_commit ]]; then
-      reclone_up_to_date=true
-      return
-    fi
-    o "Remove the old subdir."
-    RUN git rm -r -- "$subdir"
-  else
-    assert-subdir-empty
-    if [[ -z $subrepo_branch ]]; then
-      o "Determine the upstream head branch."
-      get-upstream-head-branch
-      subrepo_branch="$output"
-    fi
-
-    CALL subrepo:fetch
-  fi
-
-  o "Make the directory '$subdir/' for the clone."
-  RUN mkdir -p -- "$subdir"
-
-  o "Commit the new '$subdir/' content."
-  subrepo_commit_ref="$upstream_head_commit"
-  CALL subrepo:commit
-}
-
-# Init a new subrepo from current repo:
-subrepo:init() {
-  local branch_name="subrepo/${subref:??}"
-  # Check if subdir is proper candidate for this init:
-  assert-subdir-ready-for-init
-
-  o "Put info into '$subdir/.gitrepo' file."
-  update-gitrepo-file
-
-  o "Add the new '$subdir/.gitrepo' file."
-  # -f from pull request #219. TODO needs test.
-  RUN git add -f -- "$gitrepo"
-
-  o "Commit new subrepo to the '$original_head_branch' branch."
-  subrepo_commit_ref="$original_head_commit"
-  RUN git commit -m "$(get-commit-message)"
-
-  o "Create ref '$refs_subrepo_commit'."
-  git:make-ref "$refs_subrepo_commit" "$subrepo_commit_ref"
-}
-
-# Properly merge a local subrepo branch with upstream and commit to mainline:
-subrepo:pull() {
-  CALL subrepo:fetch
-
-  # Check if we already are up to date
-  # If the -u flag is present, always perform the operation
-  if [[ $upstream_head_commit == $subrepo_commit ]] && ! $update_wanted; then
-    OK=false; CODE=-1; return
-  fi
-
-  local branch_name="subrepo/$subref"
-  git:delete-branch "$branch_name"
-
-  subrepo_commit_ref="$branch_name"
-
-  o "Create subrepo branch '$branch_name'."
-  CALL subrepo:branch
-  cd "$worktree";
-
-  if [[ "$join_method" == "rebase" ]]; then
-    o "Rebase changes to $refs_subrepo_fetch"
-    FAIL=false OUT=true RUN git rebase "$refs_subrepo_fetch" "$branch_name"
-    if ! OK; then
-      say "The \"git rebase\" command failed:"
-      say
-      say "  ${output//$'\n'/$'\n'  }"
-      CODE=1
-      return
-    fi
-  else
-    o "Merge in changes from $refs_subrepo_fetch"
-    FAIL=false OUT=true RUN git merge "$refs_subrepo_fetch"
-    if ! OK; then
-      say "The \"git merge\" command failed:"
-      say
-      say "  ${output//$'\n'/$'\n'  }"
-      CODE=1
-      return
-    fi
-  fi
-
-  o "Back to $start_pwd"
-  cd "$start_pwd";
-
-  o "Create ref '$refs_subrepo_branch' for branch '$branch_name'."
-  git:make-ref "$refs_subrepo_branch" "$branch_name"
-
-  o "Commit the new '$subrepo_commit_ref' content."
-  CALL subrepo:commit
-}
-
-# Push a properly merged subrepo branch upstream:
-subrepo:push() {
-  local branch_name="$branch"
-  local new_upstream=false
-  local branch_created=false
-
-  if [[ -z $branch_name ]]; then
-    FAIL=false OUT=false CALL subrepo:fetch
-
-    if ! OK; then
-      # Check if we are pushing to a new upstream repo (or branch) and just
-      # push the commit directly. This is common after a `git subrepo init`:
-      # Force to case in
-      local re="(^|"$'\n'")fatal: couldn't find remote ref "
-      if [[ ${output,,} =~ $re ]]; then
-        o "Pushing to new upstream: $subrepo_remote ($subrepo_branch)."
-        new_upstream=true
-      else
-        error "Fetch for push failed: $output"
-      fi
-    else
-      # Check that we are up to date:
-      o "Check upstream head against .gitrepo commit."
-      if ! $force_wanted; then
-        if [[ $upstream_head_commit != $subrepo_commit ]]; then
-          error "There are new changes upstream, you need to pull first."
-        fi
-      fi
-    fi
-
-    branch_name="subrepo/$subref"
-    git:delete-branch "$branch_name"
-
-    if $squash_wanted; then
-      o "Squash commits"
-      subrepo_parent="HEAD^"
-    fi
-
-    o "Create subrepo branch '$branch_name'."
-    CALL subrepo:branch "$branch_name"
-    cd "$worktree";
-
-    if [[ "$join_method" == "rebase" ]]; then
-      o "Rebase changes to $refs_subrepo_fetch"
-      FAIL=false OUT=true RUN git rebase "$refs_subrepo_fetch" "$branch_name"
-      if ! OK; then
-        say "The \"git rebase\" command failed:"
-        say
-        say "  ${output//$'\n'/$'\n'  }"
-        CODE=1
-        return
-      fi
-    fi
-    branch_created=true
-    cd "$start_pwd"
-  else
-    if $squash_wanted; then
-      error "Squash option (-s) can't be used with branch parameter"
-    fi
-  fi
-
-  o "Make sure that '$branch_name' exists."
-  git:branch-exists "$branch_name" ||
-    error "No subrepo branch '$branch_name' to push."
-
-  o "Check if we have something to push"
-  new_upstream_head_commit="$(git rev-parse "$branch_name")"
-  if ! $new_upstream; then
-    if [[ $upstream_head_commit == $new_upstream_head_commit ]]; then
-      OK=false
-      CODE=-2
-      return
-    fi
-  fi
-
-  if ! $force_wanted; then
-    o "Make sure '$branch_name' contains the '$refs_subrepo_fetch' HEAD."
-    if ! git:commit-in-rev-list "$upstream_head_commit" "$branch_name"; then
-      error "Can't commit: '$branch_name' doesn't contain upstream HEAD: " \
-        "$upstream_head_commit"
-    fi
-  fi
-
-  local force=''
-  "$force_wanted" && force=' --force'
-
-  o "Push$force branch '$branch_name' to '$subrepo_remote' ($subrepo_branch)."
-  RUN git push$force "$subrepo_remote" "$branch_name":"$subrepo_branch"
-
-  o "Create ref '$refs_subrepo_push' for branch '$branch_name'."
-  git:make-ref "$refs_subrepo_push" "$branch_name"
-
-  if $branch_created; then
-    o "Remove branch '$branch_name'."
-    git:delete-branch "$branch_name"
-  fi
-
-  o "Put updates into '$subdir/.gitrepo' file."
-  upstream_head_commit="$new_upstream_head_commit"
-  subrepo_commit_ref="$upstream_head_commit"
-  update-gitrepo-file
-  RUN git commit -m "$(get-commit-message)"
-}
-
-# Fetch the subrepo's remote branch content:
-subrepo:fetch() {
-  if [[ $subrepo_remote == none ]]; then
-    error "Can't fetch subrepo. Remote is 'none' in '$subdir/.gitrepo'."
-  fi
-
-  o "Fetch the upstream: $subrepo_remote ($subrepo_branch)."
-  RUN git fetch --no-tags --quiet "$subrepo_remote" "$subrepo_branch"
-  OK || return
-
-  o "Get the upstream subrepo HEAD commit."
-  OUT=true RUN git rev-parse FETCH_HEAD^0
-  upstream_head_commit="$output"
-
-  o "Create ref '$refs_subrepo_fetch'."
-  git:make-ref "$refs_subrepo_fetch" FETCH_HEAD^0
-}
-
-# Create a subrepo branch containing all changes
-subrepo:branch() {
-  local branch="${1:-"subrepo/$subref"}"
-  o "Check if the '$branch' branch already exists."
-  git:branch-exists "$branch" && return
-
-  local last_gitrepo_commit=
-  local first_gitrepo_commit=
-
-  o "Subrepo parent: $subrepo_parent"
-  if [[ -n "$subrepo_parent" ]]; then
-    local prev_commit=
-    local ancestor=
-    o "Create new commits with parents into the subrepo fetch"
-    OUT=true RUN git rev-list --reverse --ancestry-path --topo-order "$subrepo_parent..HEAD"
-    local commit_list="$output"
-    for commit in $commit_list; do
-      o "Working on $commit"
-
-      FAIL=false OUT=true RUN git config --blob \
-        "$commit":"$subdir/.gitrepo" "subrepo.commit"
-      if [[ -z "$output" ]]; then
-        o "Ignore commit, no .gitrepo file"
-        continue
-      fi
-
-      local gitrepo_commit="$output"
-      o ".gitrepo reference commit: $gitrepo_commit"
-
-
-      # Only include the commit if it's a child of the previous commit
-      # This way we create a single path between $subrepo_parent..HEAD
-      if [[ -n "$ancestor" ]]; then
-        local is_direct_child=$(git show -s --pretty=format:"%P" $commit | grep "$ancestor")
-        o "is child: $is_direct_child"
-        if [[ -z "$is_direct_child" ]]; then
-          o "Ignore $commit, it's not in the selected path"
-          continue
-        fi
-      fi
-
-      # Remember the previous commit from the parent repo path
-      ancestor="$commit"
-
-      o "Check for rebase"
-      if git:rev-exists "$refs_subrepo_fetch"; then
-        if ! git:commit-in-rev-list  "$gitrepo_commit" "$refs_subrepo_fetch"; then
-          error "Local repository does not contain $gitrepo_commit. Try to 'git subrepo fetch $subref' or add the '-F' flag to always fetch the latest content."
-        fi
-      fi
-
-      o "Find parents"
-      local first_parent=
-      [[ -n $prev_commit ]] && first_parent="-p $prev_commit"
-      local second_parent=
-      if [[ -z "$first_gitrepo_commit" ]]; then
-        first_gitrepo_commit="$gitrepo_commit"
-        second_parent="-p $gitrepo_commit"
-      fi
-
-      if [[ "$join_method" != "rebase" ]]; then
-        # In the rebase case we don't create merge commits
-        if [[ "$gitrepo_commit" != "$last_gitrepo_commit" ]]; then
-          second_parent="-p $gitrepo_commit"
-          last_gitrepo_commit="$gitrepo_commit"
-        fi
-      fi
-
-      o "Create a new commit $first_parent $second_parent"
-      FAIL=false RUN git cat-file -e "$commit":"$subdir"
-      if OK; then
-        o "Create with content"
-        local PREVIOUS_IFS=$IFS
-        IFS=$'\n'
-        local author_info=( $(git log -1 --format=%ad%n%ae%n%an "$commit") )
-        IFS=$PREVIOUS_IFS
-
-        # When we create new commits we leave the author information unchanged
-        # the committer will though be updated to the current user
-        # This should be analog how cherrypicking is handled allowing git
-        # to store both the original author but also the responsible committer
-        # that created the local version of the commit and pushed it.
-        prev_commit=$(git log -n 1 --format=%B "$commit" |
-          GIT_AUTHOR_DATE="${author_info[0]}" \
-          GIT_AUTHOR_EMAIL="${author_info[1]}" \
-          GIT_AUTHOR_NAME="${author_info[2]}" \
-          git commit-tree -F - $first_parent $second_parent "$commit":"$subdir")
-      else
-        o "Create empty placeholder"
-        prev_commit=$(git commit-tree -m "EMPTY" \
-          $first_parent $second_parent "4b825dc642cb6eb9a060e54bf8d69288fbee4904")
-      fi
-    done
-
-    o "Create branch '$branch' for this new commit set $prev_commit."
-    RUN git branch "$branch" "$prev_commit"
-  else
-    o "No parent setting, use the subdir content."
-    RUN git branch "$branch" HEAD
-    TTY=true FAIL=false RUN git filter-branch -f --subdirectory-filter \
-      "$subref" "$branch"
-  fi
-
-  o "Remove the .gitrepo file from $first_gitrepo_commit..$branch"
-  local filter="$branch"
-  [[ -n "$first_gitrepo_commit" ]] && filter="$first_gitrepo_commit..$branch"
-  FAIL=false RUN git filter-branch -f --prune-empty --tree-filter \
-    "rm -f .gitrepo" "$filter"
-
-  git:create-worktree "$branch"
-
-  o "Create ref '$refs_subrepo_branch'."
-  git:make-ref "$refs_subrepo_branch" "$branch"
-}
-
-# Commit a merged subrepo branch:
-subrepo:commit() {
-  o "Check that '$subrepo_commit_ref' exists."
-  git:rev-exists "$subrepo_commit_ref" ||
-    error "Commit ref '$subrepo_commit_ref' does not exist."
-
-  if ! "$force_wanted"; then
-    local upstream="$upstream_head_commit"
-    o "Make sure '$subrepo_commit_ref' contains the upstream HEAD."
-    if ! git:commit-in-rev-list "$upstream" "$subrepo_commit_ref"; then
-      error \
-        "Can't commit: '$subrepo_commit_ref' doesn't contain upstream HEAD."
-    fi
-  fi
-
-  if git ls-files -- "$subdir" | grep -q .; then
-    o "Remove old content of the subdir."
-    RUN git rm -r -- "$subdir"
-  fi
-
-  o "Put remote subrepo content into '$subdir/'."
-  RUN git read-tree --prefix="$subdir" -u "$subrepo_commit_ref"
-
-  o "Put info into '$subdir/.gitrepo' file."
-  update-gitrepo-file
-  RUN git add -f -- "$gitrepo"
-
-  local commit_message
-  if [[ -n "$wanted_commit_message" ]]; then
-    commit_message="$wanted_commit_message"
-  else
-    commit_message="$(get-commit-message)"
-  fi
-
-  local edit_flag=
-  $edit_wanted && edit_flag=--edit
-
-  [[ -n $commit_message ]] || commit_message="$(get-commit-message)"
-
-  local edit_flag=
-  $edit_wanted && edit_flag=--edit
-
-  o "Commit to the '$original_head_branch' branch."
-  if [[ $original_head_commit != none ]]; then
-    RUN git commit $edit_flag -m "$commit_message"
-  else
-    # We had cloned into an empty repo, side effect of prior git reset --mixed
-    # command is that subrepo's history is now part of the index. Commit
-    # without that history.
-    OUT=true RUN git write-tree
-    OUT=true RUN git commit-tree $edit_flag -m "$commit_message" "$output"
-    RUN git reset --hard "$output"
-  fi
-
-  # Clean up worktree to indicate that we are ready
-  git:remove-worktree
-
-  o "Create ref '$refs_subrepo_commit'."
-  git:make-ref "$refs_subrepo_commit" "$subrepo_commit_ref"
-}
-
-subrepo:status() {
-  if [[ ${#command_arguments[@]} -eq 0 ]]; then
-    get-all-subrepos
-    local count=${#subrepos[@]}
-    if ! "$quiet_wanted"; then
-      if [[ $count -eq 0 ]]; then
-        echo "No subrepos."
-        return
-      else
-        local s=; [[ $count -eq 1 ]] || s=s
-        echo "$count subrepo$s:"
-        echo
-      fi
-    fi
-  else
-    subrepos=("${command_arguments[@]}")
-  fi
-
-  for subdir in "${subrepos[@]}"; do
-    check-and-normalize-subdir
-    encode-subdir
-
-    if [[ ! -f $subdir/.gitrepo ]]; then
-      echo "'$subdir' is not a subrepo"
-      echo
-      continue
-    fi
-
-    refs_subrepo_fetch="refs/subrepo/$subref/fetch"
-    upstream_head_commit="$(
-      git rev-parse --short "$refs_subrepo_fetch" 2> /dev/null || true
-    )"
-    subrepo_remote=
-    subrepo_branch=
-
-    read-gitrepo-file
-    if $fetch_wanted; then
-      subrepo:fetch
-    fi
-
-    if $quiet_wanted; then
-      echo "$subdir"
-      continue
-    fi
-
-    echo "Git subrepo '$subdir':"
-    git:branch-exists "subrepo/$subref" &&
-      echo "  Subrepo Branch:  subrepo/$subref"
-    local remote="subrepo/$subref"
-    FAIL=false OUT=true RUN git config "remote.$remote.url"
-    [[ -n $output ]] &&
-      echo "  Remote Name:     subrepo/$subref"
-    echo "  Remote URL:      $subrepo_remote"
-    [[ -n $upstream_head_commit ]] &&
-      echo "  Upstream Ref:    $upstream_head_commit"
-    echo "  Tracking Branch: $subrepo_branch"
-    [[ -z $subrepo_commit ]] ||
-      echo "  Pulled Commit:   $(git rev-parse --short $subrepo_commit)"
-    if [[ -n $subrepo_parent ]]; then
-      echo "  Pull Parent:     $(git rev-parse --short $subrepo_parent)"
-    # TODO Remove this eventually:
-    elif [[ -n $subrepo_former ]]; then
-      printf "  Former Commit:   $(git rev-parse --short $subrepo_former)"
-      echo " *** DEPRECATED ***"
-    fi
-
-    # Grep for directory, branch can be in detached state due to conflicts
-    local _worktree=$(git worktree list | grep "$GIT_TMP/subrepo/$subdir")
-    if [[ -n $_worktree  ]]; then
-      echo "  Worktree: $_worktree"
-    fi
-
-    if "$verbose_wanted"; then
-      status-refs
-    fi
-
-    echo
-  done
-}
-
-subrepo:clean() {
-  # Remove subrepo branches if exist:
-  local branch="subrepo/$subref"
-  local ref="refs/heads/$branch"
-  local worktree="$GIT_TMP/$branch"
-
-  o "Clean $subdir"
-  git:remove-worktree
-  if [[ -e .git/$ref ]]; then
-    o "Remove branch '$branch'."
-    RUN git update-ref -d "$ref"
-    clean_list+=("branch '$branch'")
-  fi
-
-  if "$force_wanted"; then
-    o "Remove all subrepo refs."
-    local suffix=""
-    if ! $all_wanted; then
-      suffix="$subref/"
-    fi
-    git show-ref | while read hash ref; do
-      if [[ "$ref" == refs/subrepo/$suffix* ]]; then
-        git update-ref -d "$ref"
-      fi
-    done
-  fi
-}
-
-#------------------------------------------------------------------------------
-# Support functions:
-#------------------------------------------------------------------------------
-
-
-# TODO:
-# Collect original options and arguments into an array for commit message
-#   They should be normalized and pruned
-
-# Parse command line options:
-get-command-options() {
-  [[ $# -eq 0 ]] && set -- --help
-
-  [[ -n $GIT_SUBREPO_QUIET ]] && quiet_wanted=true
-  [[ -n $GIT_SUBREPO_VERBOSE ]] && verbose_wanted=true
-  [[ -n $GIT_SUBREPO_DEBUG ]] && debug_wanted=true
-
-  eval "$(
-    echo "$GETOPT_SPEC" |
-      git rev-parse --parseopt -- "$@" ||
-    echo exit $?
-  )"
-
-  while [[ $# -gt 0 ]]; do
-    local option="$1"; shift
-    case "$option" in
-      --) break ;;
-      -a) all_wanted=true ;;
-      -A) ALL_wanted=true
-          all_wanted=true ;;
-      -b) subrepo_branch="$1"
-          override_branch="$1"
-          commit_msg_args+=("--branch=$1")
-          shift ;;
-      -e) edit_wanted=true ;;
-      -f) force_wanted=true
-          commit_msg_args+=("--force") ;;
-      -F) fetch_wanted=true ;;
-      -m) wanted_commit_message="$1"
-          shift;;
-      -M) join_method="$1"
-          shift;;
-      -M) join_method="$1"
-          shift;;
-      -r) subrepo_remote="$1"
-          override_remote="$1"
-          commit_msg_args+=("--remote=$1")
-          shift ;;
-      -s) squash_wanted=true ;;
-      -u) update_wanted=true
-          commit_msg_args+=("--update") ;;
-      -q) quiet_wanted=true ;;
-      -v) verbose_wanted=true ;;
-      -d) debug_wanted=true ;;
-      -x) set -x ;;
-      --version)
-        echo "$VERSION"
-        exit ;;
-      *) usage-error "Unexpected option: '$option'." ;;
-    esac
-  done
-
-  # Set subrepo command:
-  command="$1"; shift
-
-  # Make sure command exists:
-  can "command:$command" ||
-    usage-error "'$command' is not a command. See 'git subrepo help'."
-
-  command_arguments=("$@")
-  if [[ ${#command_arguments} -gt 0 ]]; then
-    local first="${command_arguments[0]}"
-    first="${first%/}"
-    command_arguments[0]="$first"
-  fi
-  commit_msg_args+=("${command_arguments[@]}")
-
-  for option in all ALL edit fetch force squash; do
-    var="${option}_wanted"
-    if ${!var}; then
-      check_option $option
-    fi
-  done
-
-  if [[ -n $override_branch ]]; then
-    check_option branch
-  fi
-  if [[ -n $override_remote ]]; then
-    check_option remote
-  fi
-  if [[ -n $wanted_commit_message ]]; then
-    check_option message
-  fi
-  if $update_wanted; then
-    check_option update
-    if [[ -z $subrepo_branch && -z $subrepo_remote ]]; then
-      usage-error "Can't use '--update' without '--branch' or '--remote'."
-    fi
-  fi
-}
-
-options_help='all'
-options_branch='all fetch force'
-options_clean='ALL all force'
-options_clone='branch edit force message method'
-options_config='force'
-options_commit='edit fetch force message'
-options_fetch='all branch remote'
-options_init='branch remote method'
-options_pull='all branch edit force message remote update'
-options_push='all branch force remote squash update'
-options_status='ALL all fetch'
-check_option() {
-  local var="options_${command//-/_}"
-  [[ ${!var} =~ $1 ]] ||
-    usage-error "Invalid option '--$1' for '$command'."
-}
-
-#------------------------------------------------------------------------------
-# Command argument validation:
-#------------------------------------------------------------------------------
-
-command-init() {
-  # Export variable to let other processes (possibly git hooks) know that they
-  # are running under git-subrepo. Set to current process pid, so it can be
-  # further verified if need be:
-  export GIT_SUBREPO_RUNNING="$$"
-  export GIT_SUBREPO_COMMAND="$command"
-
-  : "${GIT_SUBREPO_PAGER:=${PAGER:-less}}"
-  if [[ $GIT_SUBREPO_PAGER == less ]]; then
-    GIT_SUBREPO_PAGER='less -FRX'
-  fi
-}
-
-command-prepare() {
-  local output=
-  if git:rev-exists HEAD; then
-    git:get-head-branch-commit
-  fi
-  original_head_commit="${output:-none}"
-}
-
-# Do the setup steps needed by most of the subrepo subcommands:
-command-setup() {
-  get-params "$@"
-
-  check-and-normalize-subdir
-  encode-subdir
-  gitrepo="$subdir/.gitrepo"
-
-  if ! $force_wanted; then
-    o "Check for worktree with branch subrepo/$subdir"
-    local _worktree=$(git worktree list | grep "\[subrepo/$subdir\]" | cut -d ' ' -f1)
-    if [[ $command =~ ^(commit)$ && -z $_worktree ]]; then
-      error "There is no worktree available, use the branch command first"
-    elif [[ ! $command =~ ^(branch|clean|commit|push)$ && -n $_worktree ]]; then
-      if [[ -e $gitrepo ]]; then
-        error "There is already a worktree with branch subrepo/$subdir.
-Use the --force flag to override this check or perform a subrepo clean
-to remove the worktree."
-      else
-        error "There is already a worktree with branch subrepo/$subdir.
-Use the --force flag to override this check or remove the worktree with
-1. rm -rf $_worktree
-2. git worktree prune
-"
-      fi
-    fi
-  fi
-
-  # Set refs_ variables:
-  refs_subrepo_branch="refs/subrepo/$subref/branch"
-  refs_subrepo_commit="refs/subrepo/$subref/commit"
-  refs_subrepo_fetch="refs/subrepo/$subref/fetch"
-  refs_subrepo_push="refs/subrepo/$subref/push"
-
-  # Read/parse the .gitrepo file (unless clone/init; doesn't exist yet)
-  if [[ ! $command =~ ^(clone|init)$ ]]; then
-    read-gitrepo-file
-  fi
-
-  true
-}
-
-# Parse command line args according to a simple dsl spec:
-get-params() {
-  local i=0
-  local num=${#command_arguments[@]}
-  for arg in $@; do
-    local value="${command_arguments[i]}"
-    value="${value//%/%%}"
-    value="${value//\\/\\\\}"
-    # If arg starts with '+' then it is required
-    if [[ $arg == +* ]]; then
-      if [[ $i -ge $num ]]; then
-        usage-error "Command '$command' requires arg '${arg#+}'."
-      fi
-      printf -v ${arg#+} -- "$value"
-    # Look for function name after ':' to provide a default value
-    else
-      if [[ $i -lt $num ]]; then
-        printf -v ${arg%:*} -- "$value"
-      elif [[ $arg =~ : ]]; then
-        "${arg#*:}"
-      fi
-    fi
-    let i=$((i+1))
-  done
-
-  # Check for extra arguments:
-  if [[ $num -gt $i ]]; then
-    set -- ${command_arguments[@]}
-    for ((j = 1; j <= i; j++)); do shift; done
-    error "Unknown argument(s) '$*' for '$command' command."
-  fi
-}
-
-check-and-normalize-subdir() {
-  # Sanity check subdir:
-  [[ -n $subdir ]] ||
-    die "subdir not set"
-  [[ $subdir =~ ^/ || $subdir =~ ^[A-Z]: ]] &&
-    usage-error "The subdir '$subdir' should not be absolute path."
-  subdir="${subdir#./}"
-  subdir="${subdir%/}"
-  [[ $subdir != *//* ]] || subdir=$(tr -s / <<< "$subdir")
-}
-
-# Determine the correct subdir path to use:
-guess-subdir() {
-  local dir="$subrepo_remote"
-  dir="${dir%.git}"
-  dir="${dir%/}"
-  dir="${dir##*/}"
-  [[ $dir =~ ^[-_a-zA-Z0-9]+$ ]] ||
-    error "Can't determine subdir from '$subrepo_remote'."
-  subdir="$dir"
-  check-and-normalize-subdir
-  encode-subdir
-}
-
-# Encode the subdir as a valid git ref format
-#
-# Input: env $subdir
-# Output: env $subref
-#
-# For detail rules about valid git refs, see the manual of git-check-ref-format:
-# URL:  https://www.kernel.org/pub/software/scm/git/docs/git-check-ref-format.html
-# Shell: git check-ref-format --help
-#
-encode-subdir() {
-  subref=$subdir
-  if [[ ! $subref ]] || git check-ref-format "subrepo/$subref"; then
-    return
-  fi
-
-  ## 0. escape %, ensure the subref can be (almost) decoded back to subdir
-  subref=${subref//%/%25}
-
-  ## 1. They can include slash / for hierarchical (directory) grouping,
-  ##    but no slash-separated component can begin with a dot .  or
-  ##    end with the sequence .lock.
-  subref=/$subref/
-  subref=${subref//\/.//%2e}
-  subref=${subref//.lock\//%2elock/}
-  subref=${subref#/}
-  subref=${subref%/}
-
-  ## 2. They must contain at least one /.
-  ##    Note: 'subrepo/' be will prefixed, so this is always true.
-  ## 3. They cannot have two consecutive dots ..  anywhere.
-  subref=${subref//../%2e%2e}
-  subref=${subref//%2e./%2e%2e}
-  subref=${subref//.%2e/%2e%2e}
-
-  ## 4. They cannot have ASCII control characters
-  ##    (i.e. bytes whose values are lower than \040, or \177 DEL), space,
-  ##    tilde ~, caret ^, or colon : anywhere.
-  ## 5. They cannot have question-mark ?, asterisk *,
-  ##    or open bracket [ anywhere.
-  local i
-  for (( i = 1; i < 32; ++i )); do
-    # skip substitute NUL char (i=0), as bash will skip NUL in env
-    local x=$(printf "%02x" $i)
-    subref=${subref//$(printf "%b" "\x$x")/%$x}
-  done
-  subref=${subref//$'\177'/%7f}
-  subref=${subref// /%20}
-  subref=${subref//\~/%7e}
-  subref=${subref//^/%5e}
-  subref=${subref//:/%3a}
-  subref=${subref//\?/%3f}
-  subref=${subref//\*/%2a}
-  subref=${subref//\[/%5b}
-  subref=${subref//$'\n'/%0a}
-
-  ## 6. They cannot begin or end with a slash / or contain multiple
-  ##    consecutive slashes.
-  ##    Note: This rule is not revertable.
-  [[ $subref != *//* ]] || subref=$(tr -s / <<< "$subref")
-
-  ## 7. They cannot end with a dot ..
-  case "$subref" in
-  *.) subref=${subref%.}
-      subref+=%2e
-      ;;
-  esac
-
-  ## 8. They cannot contain a sequence @\{.
-  subref=${subref//@\{/%40\{}
-
-  ## 9. They cannot be the single character @.
-  ##    Note: 'subrepo/' be will prefixed, so this is always true.
-
-  ## 10. They cannot contain a \.
-  subref=${subref//\\/%5c}
-
-  subref=$(git check-ref-format --normalize --allow-onelevel "$subref") ||
-    error "Can't determine valid subref from '$subdir'."
-}
-
-#------------------------------------------------------------------------------
-# State file (`.gitrepo`) functions:
-#------------------------------------------------------------------------------
-
-# Set subdir and gitrepo vars:
-read-gitrepo-file() {
-  gitrepo="$subdir/.gitrepo"
-
-  if [[ ! -f $gitrepo ]]; then
-    error "No '$gitrepo' file."
-  fi
-
-  # Read .gitrepo values:
-  if [[ -z $subrepo_remote ]]; then
-    SAY=false OUT=true RUN git config --file="$gitrepo" subrepo.remote
-    subrepo_remote="$output"
-  fi
-
-  if [[ -z $subrepo_branch ]]; then
-    SAY=false OUT=true RUN git config --file="$gitrepo" subrepo.branch
-    subrepo_branch="$output"
-  fi
-
-  SAY=false OUT=true RUN git config --file="$gitrepo" subrepo.commit
-  subrepo_commit="$output"
-
-  FAIL=false \
-  SAY=false OUT=true RUN git config --file="$gitrepo" subrepo.parent
-  subrepo_parent="$output"
-
-  FAIL=false \
-  SAY=false OUT=true RUN git config --file="$gitrepo" subrepo.method
-  if [[ $output == "rebase" ]]; then
-    join_method="rebase"
-  else
-    # This is the default method
-    join_method="merge"
-  fi
-
-  if [[ -z $subrepo_parent ]]; then
-    FAIL=false \
-      SAY=false OUT=true RUN git config --file="$gitrepo" subrepo.former
-    subrepo_former="$output"
-  fi
-}
-
-
-# Update the subdir/.gitrepo state file:
-update-gitrepo-file() {
-  local short_commit=
-
-  local newfile=false
-  if [[ ! -e $gitrepo ]]; then
-
-    FAIL=false RUN git cat-file -e "$original_head_commit":"$gitrepo"
-
-    if OK; then
-      o "Try to recreate gitrepo file from $original_head_commit"
-      git cat-file -p "$original_head_commit":"$gitrepo" > "$gitrepo"
-    else
-      newfile=true
-      cat <<... > "$gitrepo"
-; DO NOT EDIT (unless you know what you are doing)
-;
-; This subdirectory is a git "subrepo", and this file is maintained by the
-; git-subrepo command. See https://github.com/git-commands/git-subrepo#readme
-;
-...
-    fi
-  fi
-
-
-  # TODO: only update remote and branch if supplied and $update_wanted
-  if $newfile || [[ $update_wanted && -n $override_remote ]]; then
-    RUN git config --file="$gitrepo" subrepo.remote "$subrepo_remote"
-  fi
-
-  if $newfile || [[ $update_wanted && -n $override_branch ]]; then
-    RUN git config --file="$gitrepo" subrepo.branch "$subrepo_branch"
-  fi
-
-  RUN git config --file="$gitrepo" subrepo.commit "$upstream_head_commit"
-  # Only write new parent when we are at the head of upstream
-  if [[ -n $upstream_head_commit && -n $subrepo_commit_ref ]]; then
-    OUT=true RUN git rev-parse "$subrepo_commit_ref"
-    o "$upstream_head_commit == $output"
-    if [[ $upstream_head_commit == $output ]]; then
-      RUN git config --file="$gitrepo" subrepo.parent "$original_head_commit"
-    fi
-  fi
-
-  [[ -z $join_method ]] && join_method="merge"
-  RUN git config --file="$gitrepo" subrepo.method "$join_method"
-
-  RUN git config --file="$gitrepo" subrepo.cmdver "$VERSION"
-
-  RUN git add -f -- "$gitrepo"
-}
-
-#------------------------------------------------------------------------------
-# Enviroment checks:
-#------------------------------------------------------------------------------
-
-# Check that system is ok for this command:
-assert-environment-ok() {
-  type git &> /dev/null ||
-    error "Can't find your 'git' command in '$PATH'."
-
-  git_version=$(git --version | cut -d ' ' -f3)
-
-  if [[ $(
-          printf "$REQUIRED_GIT_VERSION\n$git_version" |
-          sort -t. -k 1,1n -k 2,2n -k 3,3n |
-          head -n1
-        ) == "$git_version" &&
-       $git_version != "$REQUIRED_GIT_VERSION"
-  ]]; then
-    error "Requires git version $REQUIRED_GIT_VERSION or higher; "`
-         `"you have '$git_version'."
-  fi
-
-  if [[ ${BASH_VERSINFO[0]} -lt 4 ]] ; then
-    echo "The git-subrepo command requires that 'Bash 4+' is installed."
-    echo "It doesn't need to be your shell, but it must be in your PATH."
-    if [[ $OSTYPE == darwin* ]]; then
-      echo "You appear to be on macOS."
-      echo "Try: 'brew install bash'."
-      echo "This will not change your user shell, it just installs 'Bash 5.x'."
-    fi
-    exit 1
-  fi
-}
-
-# Make sure git repo is ready:
-assert-repo-is-ready() {
-  # Skip this for trivial info commands:
-  [[ $command =~ ^(help|version|upgrade)$ ]] && return
-
-  # We must be inside a git repo:
-  git rev-parse --git-dir &> /dev/null ||
-    error "Not inside a git repository."
-
-  # Get the original branch and commit:
-  git:get-head-branch-name
-  original_head_branch="$output"
-
-  # If a subrepo branch is currently checked out, then note it:
-  if [[ $original_head_branch =~ ^subrepo/(.*) ]]; then
-    error "Can't '$command' while subrepo branch is checked out."
-  fi
-
-  # Make sure we are on a branch:
-  [[ $original_head_branch == HEAD || -z $original_head_branch ]] &&
-    error "Must be on a branch to run this command."
-
-  # In a work-tree:
-  SAY=false OUT=true RUN git rev-parse --is-inside-work-tree
-  [[ $output == true ]] ||
-    error "Can't 'subrepo $command' outside a working tree."
-
-  # HEAD exists:
-  [[ $command == clone ]] ||
-    RUN git rev-parse --verify HEAD
-
-  assert-working-copy-is-clean
-
-  # For now, only support actions from top of repo:
-  if [[ -n "$(git rev-parse --show-prefix)" ]]; then
-    error "Need to run subrepo command from top level directory of the repo."
-  fi
-}
-
-assert-working-copy-is-clean() {
-  # Repo is in a clean state:
-  if [[ $command =~ ^(clone|init|pull|push|branch|commit)$ ]]; then
-    # TODO: Should we check for untracked files?
-    local pwd=$(pwd)
-    o "Assert that working copy is clean: $pwd"
-    git update-index -q --ignore-submodules --refresh
-    git diff-files --quiet --ignore-submodules ||
-      error "Can't $command subrepo. Unstaged changes. ($pwd)"
-    if [[ $command != clone ]] || git:rev-exists HEAD; then
-      git diff-index --quiet --ignore-submodules HEAD ||
-        error "Can't $command subrepo. Working tree has changes. ($pwd)"
-      git diff-index --quiet --cached --ignore-submodules HEAD ||
-        error "Can't $command subrepo. Index has changes. ($pwd)"
-    else
-      # Repo has no commits and we're cloning a subrepo. Working tree won't
-      #  possibly have changes as there was nothing initial to change.
-      [[ -z $(git ls-files) ]] ||
-        error "Can't $command subrepo. Index has changes. ($pwd)"
-    fi
-  fi
-}
-
-# If subdir exists, make sure it is empty:
-assert-subdir-ready-for-init() {
-  if [[ ! -e $subdir ]]; then
-    error "The subdir '$subdir' does not exist."
-  fi
-  if [[ -e $subdir/.gitrepo ]]; then
-    error "The subdir '$subdir' is already a subrepo."
-  fi
-  # Check that subdir is part of the repo
-  if [[ -z $(git log -1 -- $subdir) ]]; then
-    error "The subdir '$subdir' is not part of this repo."
-  fi
-}
-
-# If subdir exists, make sure it is empty:
-assert-subdir-empty() {
-  if [[ -e $subdir ]] && [[ -n $(ls -A $subdir) ]]; then
-    error "The subdir '$subdir' exists and is not empty."
-  fi
-}
-
-#------------------------------------------------------------------------------
-# Getters of various information:
-#------------------------------------------------------------------------------
-
-# Find all the current subrepos by looking for all the subdirectories that
-# contain a `.gitrepo` file.
-get-all-subrepos() {
-  local paths=($(git ls-files | sed -n 's!/\.gitrepo$!!p' | sort))
-  subrepos=()
-  local path
-  for path in "${paths[@]}"; do
-    add-subrepo "$path"
-  done
-}
-
-add-subrepo() {
-  if ! $ALL_wanted; then
-    for path in "${subrepos[@]}"; do
-      [[ $1 =~ ^$path ]] && return
-    done
-  fi
-  subrepos+=("$1")
-}
-
-# Determine the upstream's default head branch:
-get-upstream-head-branch() {
-  OUT=true RUN git ls-remote $subrepo_remote
-  local remotes="$output"
-  [[ -n $remotes ]] ||
-    error "Failed to 'git ls-remote $subrepo_remote'."
-  local commit="$(
-    echo "$remotes" |
-    grep HEAD |
-    cut -f1
-  )"
-  local branch="$(
-    echo "$remotes" |
-    grep -E "$commit[[:space:]]+refs/heads/" |
-    grep -v HEAD |
-    head -n1 |
-    cut -f2
-  )"
-  [[ $branch =~ refs/heads/ ]] ||
-    error "Problem finding remote default head branch."
-  output="${branch#refs/heads/}"
-}
-
-# Commit msg for an action commit:
-# Don't use RUN here as it will pollute commit message
-get-commit-message() {
-  local commit="none"
-  if git:rev-exists "$upstream_head_commit"; then
-    commit=$(git rev-parse --short "$upstream_head_commit")
-  fi
-
-  local args=() debug_wanted=false
-  if $all_wanted; then
-    args+=("$subdir")
-  fi
-  args+=(${commit_msg_args[@]})
-
-  # Find the specific git-subrepo code used:
-  local command_remote='???'
-  local command_commit='???'
-  get-command-info
-
-  local merged="none"
-  if git:rev-exists "$subrepo_commit_ref"; then
-    merged=$(git rev-parse --short "$subrepo_commit_ref")
-  fi
-
-  local is_merge=""
-  if [[ $command != push ]]; then
-    if git:is_merge_commit "$subrepo_commit_ref"; then
-      is_merge=" (merge)"
-    fi
-  fi
-
-  # TODO: Consider output for push!
-
-  # Format subrepo commit message:
-  cat <<...
-git subrepo $command$is_merge ${args[@]}
-
-subrepo:
-  subdir:   "$subdir"
-  merged:   "$merged"
-upstream:
-  origin:   "$subrepo_remote"
-  branch:   "$subrepo_branch"
-  commit:   "$commit"
-git-subrepo:
-  version:  "$VERSION"
-  origin:   "$command_remote"
-  commit:   "$command_commit"
-...
-}
-
-# Get location and version info about the git-subrepo command itself. This
-# info goes into commit messages, so we can find out exactly how the commits
-# were done.
-get-command-info() {
-  local bin="$0"
-  if [[ $bin =~ / ]]; then
-    local lib="$(dirname "$bin")"
-    # XXX Makefile needs to install these symlinks:
-    # If `git-subrepo` was system-installed (`make install`):
-    if [[ -e $lib/git-subrepo.d/upstream ]] &&
-       [[ -e $lib/git-subrepo.d/commit ]]; then
-      command_remote=$(readlink "$lib/git-subrepo.d/upstream")
-      command_commit=$(readlink "$lib/git-subrepo.d/commit")
-    elif [[ $lib =~ / ]]; then
-      lib="$(dirname "$lib")"
-      if [[ -d $lib/.git ]]; then
-        local remote="$(
-          GIT_DIR=$lib/.git git remote -v |
-            grep '^origin' |
-            head -n1 |
-            cut -f2 |
-            cut -d ' ' -f1
-        )"
-        if [[ -n $remote ]]; then
-          command_remote="$remote"
-        else
-          local remote="$(
-            GIT_DIR=$lib/.git git remote -v |
-              head -n1 |
-              cut -f2 |
-              cut -d ' ' -f1
-          )"
-          if [[ -n $remote ]]; then
-            command_remote="$remote"
-          fi
-        fi
-        local commit="$(GIT_DIR="$lib/.git" git rev-parse --short HEAD)"
-        if [[ -n $commit ]]; then
-          command_commit="$commit"
-        fi
-      fi
-    fi
-  fi
-}
-
-#------------------------------------------------------------------------------
-# Instructional errors:
-#------------------------------------------------------------------------------
-
-error-join() {
-  cat <<...
-
-You will need to finish the $command by hand. A new working tree has been
-created at $worktree so that you can resolve the conflicts
-shown in the output above.
-
-This is the common conflict resolution workflow:
-
-  1. cd $worktree
-  2. Resolve the conflicts (see "git status").
-  3. "git add" the resolved files.
-...
-
-  if [[ "$join_method" == "rebase" ]]; then
-    cat <<...
-  4. git rebase --continue
-...
-  else
-    cat <<...
-  4. git commit
-...
-  fi
-
-  cat <<...
-  5. If there are more conflicts, restart at step 2.
-  6. cd $start_pwd
-...
-  local branch_name="${branch:=subrepo/$subdir}"
-  if [[ "$command" == "push" ]]; then
-    cat <<...
-  7. git subrepo push $subdir $branch_name
-...
-  else
-    cat <<...
-  7. git subrepo commit $subdir
-...
-  fi
-
-  if [[ "$command" == "pull" && "$join_method" == "rebase" ]]; then
-    cat <<...
-
-After you have performed the steps above you can push your local changes
-without repeating the rebase by:
-  1. git subrepo push $subdir $branch_name
-
-...
-  fi
-
-cat <<...
-See "git help $join_method" for details.
-
-Alternatively, you can abort the $command and reset back to where you started:
-
-  1. git subrepo clean $subdir
-
-See "git help subrepo" for more help.
-
-...
-}
-
-#------------------------------------------------------------------------------
-# Git command wrappers:
-#------------------------------------------------------------------------------
-
-git:branch-exists() {
-  git:rev-exists "refs/heads/$1"
-}
-
-git:rev-exists() {
-  git rev-list "$1" -1 &> /dev/null
-}
-
-git:ref-exists() {
-  test -n "$(git for-each-ref "$1")"
-}
-
-git:get-head-branch-name() {
-  output=
-  local name="$(git symbolic-ref --short --quiet HEAD)"
-  [[ $name == HEAD ]] && return
-  output="$name"
-}
-
-git:get-head-branch-commit() {
-  output="$(git rev-parse HEAD)"
-}
-
-git:commit-in-rev-list() {
-  local commit="$1"
-  local list_head="$2"
-  git rev-list "$list_head" | grep -q "^$commit"
-}
-
-git:make-ref() {
-  local ref_name="$1"
-  local commit="$(git rev-parse "$2")"
-  RUN git update-ref "$ref_name" "$commit"
-}
-
-git:is_merge_commit() {
-  local commit="$1"
-  git show --summary "$commit" | grep -q ^Merge:
-}
-
-git:create-worktree() {
-  local branch="$1"
-  worktree="$GIT_TMP/$branch"
-  RUN git worktree add "$worktree" "$branch"
-}
-
-git:remove-worktree() {
-  o "Remove worktree: $worktree"
-  if [[ -d "$worktree" ]]; then
-    o "Check worktree for unsaved changes"
-    cd "$worktree"
-    assert-working-copy-is-clean
-    cd "$start_pwd"
-
-    o "Clean up worktree $worktree"
-    rm -rf "$worktree"
-    RUN git worktree prune
-  fi
-}
-
-git:delete-branch() {
-  local branch="$1"
-  o "Deleting old '$branch' branch."
-  # Remove worktree first, otherwise you can't delete the branch
-  git:remove-worktree
-  FAIL=false RUN git branch -D "$branch"
-}
-
-
-#------------------------------------------------------------------------------
-# Low level sugar commands:
-#------------------------------------------------------------------------------
-
-# Smart command runner:
-RUN() {
-  $debug_wanted && $SAY && say '>>>' $*
-  if $EXEC; then
-    "$@"
-    return $?
-  fi
-
-  OK=true
-  set +e
-  local rc=
-  local out=
-  if $debug_wanted && $TTY && interactive; then
-    "$@"
-  else
-    if $OUT; then
-      out="$("$@" 2>/dev/null)"
-    else
-      out="$("$@" 2>&1)"
-    fi
-  fi
-  rc=$?
-  set -e
-
-  if [[ $rc -ne 0 ]]; then
-    OK=false
-    $FAIL && error "Command failed: '$*'.\n$out"
-  fi
-  output="$out"
-}
-
-
-interactive() {
-  if [[ -t 0 && -t 1 ]]; then
-    return 0
-  else
-    return 1
-  fi
-}
-
-# Call a function with indent increased:
-CALL() {
-  local INDENT="  $INDENT"
-  "$@" || true
-}
-
-# Print verbose steps for commands with steps:
-o() {
-  if $verbose_wanted; then
-    echo "$INDENT* $@"
-  fi
-}
-
-# Print unless quiet mode:
-say() {
-  $quiet_wanted || echo "$@"
-}
-
-# Print to stderr:
-err() {
-  echo "$@" >&2
-}
-
-# Check if OK:
-OK() {
-  $OK
-}
-
-# Nicely report common error messages:
-usage-error() {
-  local msg="git-subrepo: $1" usage=
-  if [[ $GIT_SUBREPO_TEST_ERRORS != true ]]; then
-    source "${SOURCE_DIR}/git-subrepo.d/help-functions.bash"
-    if can "help:$command"; then
-      msg=$'\n'"$msg"$'\n'"$("help:$command")"$'\n'
-    fi
-  fi
-  echo "$msg" >&2
-  exit 1
-}
-
-# Nicely report common error messages:
-error() {
-  local msg="git-subrepo: $1" usage=
-  echo -e "$msg" >&2
-  exit 1
-}
-
-# Start at the end:
-[[ $BASH_SOURCE != "$0" ]] || main "$@"
-
-# Local Variables:
-# tab-width: 2
-# sh-indentation: 2
-# sh-basic-offset: 2
-# End:
-# vim: set ft=sh sw=2 lisp: