Repository: junegunn/fzf
File: shell/completion.bash (Shell)

Code before:
}

_fzf_proc_completion() {
  _fzf_complete -m --header-lines=1 --preview 'echo {}' --preview-window down:3:wrap --min-height 15 -- "$@" < <(
    command ps -eo user,pid,ppid,start,time,command 2> /dev/null ||
      command ps -eo user,pid,ppid,time,args # For BusyBox
  )
}

_fzf_proc_completion_post() {
  command awk '{print $2}'
}

__fzf_list_hosts() {
  command cat <(command tail -n +1 ~/.ssh/config ~/.ssh/config.d/* /etc/ssh/ssh_config 2> /dev/null | command grep -i '^\s*host\(name\)\? ' | command awk '{for (i = 2; i <= NF; i++) print $1 " " $i}' | command grep -v '[*?%]') \
    <(command grep -oE '^[[a-z0-9.,:-]+' ~/.ssh/known_hosts | command tr ',' '\n' | command tr -d '[' | command awk '{ print $1 " " $1 }') \
    <(command grep -v '^\s*\(#\|$\)' /etc/hosts | command grep -Fv '0.0.0.0') |
    command awk -v "user=$1" '{if (length($2) > 0) {print user $2}}' | command sort -u
}

_fzf_host_completion() {
  _fzf_complete +m -- "$@" < <(__fzf_list_hosts "")
}

# Values for $1 $2 $3 are described here
# https://www.gnu.org/software/bash/manual/html_node/Programmable-Completion.html
# > the first argument ($1) is the name of the command whose arguments are being completed,
# > the second argument ($2) is the word being completed,
# > and the third argument ($3) is the word preceding the word being completed on the current command line.
_fzf_complete_ssh() {
  case $3 in
    -i|-F|-E)
      _fzf_path_completion "$@"
      ;;
    *)
      local user=
      [[ "$2" =~ '@' ]] && user="${2%%@*}@"
      _fzf_complete +m -- "$@" < <(__fzf_list_hosts "$user")
      ;;
  esac
}

_fzf_var_completion() {
  _fzf_complete -m -- "$@" < <(
    declare -xp | command sed -En 's|^declare [^ ]+ ([^=]+).*|\1|p'
  )
}

_fzf_alias_completion() {
  _fzf_complete -m -- "$@" < <(
    alias | command sed -En 's|^alias ([^=]+).*|\1|p'

Review comment (suggestion):
This is fine for now. But I'll have to reconsider this if they decide to change the way the function works in the future.

Code after:
}

_fzf_proc_completion() {
  _fzf_complete -m --header-lines=1 --preview 'echo {}' --preview-window down:3:wrap --min-height 15 -- "$@" < <(
    command ps -eo user,pid,ppid,start,time,command 2> /dev/null ||
      command ps -eo user,pid,ppid,time,args # For BusyBox
  )
}

_fzf_proc_completion_post() {
  command awk '{print $2}'
}

# To use custom hostname lists, override __fzf_list_hosts.
# The function is expected to print hostnames, one per line as well as in the
# desired sorting and with any duplicates removed, to standard output.
if ! declare -F __fzf_list_hosts > /dev/null; then
  if declare -F _known_hosts_real > /dev/null; then
    # if available, use bash-completions’s _known_hosts_real() for getting the list of hosts

    __fzf_list_hosts() {
      # set the local attribute for any non-local variable that is set by _known_hosts_real()
      local COMPREPLY=()

      _known_hosts_real ''
      printf '%s\n' "${COMPREPLY[@]}" | command sort -u --version-sort
    }
  else
    # otherwise, get a list of hosts on our own

    __fzf_list_hosts() {
      command cat <(command tail -n +1 ~/.ssh/config ~/.ssh/config.d/* /etc/ssh/ssh_config 2> /dev/null | command grep -i '^\s*host\(name\)\? ' | command awk '{for (i = 2; i <= NF; i++) print $1 " " $i}' | command grep -v '[*?%]') \
        <(command grep -oE '^[[a-z0-9.,:-]+' ~/.ssh/known_hosts 2> /dev/null | command tr ',' '\n' | command tr -d '[' | command awk '{ print $1 " " $1 }') \
        <(command grep -v '^\s*\(#\|$\)' /etc/hosts 2> /dev/null | command grep -Fv '0.0.0.0') |
        command awk '{if (length($2) > 0) {print $2}}' | command sort -u
    }
  fi
fi

_fzf_host_completion() {
  _fzf_complete +m -- "$@" < <(__fzf_list_hosts)
}

# Values for $1 $2 $3 are described here
# https://www.gnu.org/software/bash/manual/html_node/Programmable-Completion.html
# > the first argument ($1) is the name of the command whose arguments are being completed,
# > the second argument ($2) is the word being completed,
# > and the third argument ($3) is the word preceding the word being completed on the current command line.
_fzf_complete_ssh() {
  case $3 in
    -i|-F|-E)