docker run -e TERM -it --rm alpine:3.11.6 sh -uec "                           
  cd
  apk add bash zsh git
  git clone --depth=1 https://github.com/junegunn/fzf.git
  ~/fzf/install --bin
  for i in 1 2; do
    cat /usr/share/zsh/5.7.1/functions/Misc/run-help
    printf '\0'
  done | ~/fzf/bin/fzf --read0 --query setcap"

x="$(printf '#!/bin/zsh\n#\n# Figure out where to get the best help, and get it.\n#\n# Install this function by placing it in your FPATH and then\n# adding to your .zshrc the lines:\n#\tunalias run-help\n#\tautoload -Uz run-help\n#\n\nemulate -RL zsh\n\nlocal HELPDIR="${HELPDIR:-/usr/share/zsh/5.7.1/help}"\n\n[[ $1 == "." ]] && 1="dot"\n[[ $1 == ":" ]] && 1="colon"\n\n# Check whether Util/helpfiles has been used to generate zsh help\nif [[ $# == 0 || $1 == "-l" ]]\nthen\n    if [[ -d $HELPDIR ]]\n    then\n\techo "Here is a list of topics for which special help is available:"\n\techo ""\n\tprint -rc $HELPDIR/*(:t)\n    else\n\techo "There is no list of special help topics available at this time."\n    fi\n    return 0\nelif [[ -n "${HELPDIR:-}" && -r $HELPDIR/$1 && $1 != compctl ]]\nthen\n    ${=PAGER:-more} $HELPDIR/$1\n    return $?\nfi\n\n# No zsh help; use "whence" to figure out where else we might look\nlocal what places noalias newline='\''\n'\''\ninteger i=0 didman=0\n\nplaces=( "${(@f)$(builtin whence -va $1)}" )\nif [[ $places = *"not found"* && $1 != ${(Q)1} ]]; then\n  # Different when unquoted, so try stripping quotes.\n  places=( "${(@f)$(builtin whence -va ${(Q)1})}" )\n  if (( ${#places} )); then\n      set -- "${(Q)@}"\n  fi\n  # Quotation is significant to aliases, so suppress lookup.\n  noalias=1\nfi\n\n{\nwhile ((i++ < $#places))\ndo\n    what=$places[$i]\n    [[ -n $noalias && $what = *" is an alias "* ]] && continue\n    builtin print -r $what\n    case $what in\n    (*( is an alias for (noglob|nocorrect))*)\n\t[[ ${what[(w)7]:t} != ${what[(w)1]} ]] &&\n\t  run_help_orig_cmd=${what[(w)1]} run-help ${what[(w)7]:t}\n\t;;\n    (*( is an alias)*)\n\t[[ ${what[(w)6]:t} != ${what[(w)1]} ]] &&\n\t  run_help_orig_cmd=${what[(w)1]} run-help ${what[(w)6]:t}\n\t;;\n    (*( is a * function))\n\tcase ${what[(w)1]} in\n\t(comp*) man zshcompsys;;\n\t(zf*) man zshftpsys;;\n\t(run-help) man zshcontrib;;\n\t(*) builtin functions ${what[(w)1]} | ${=PAGER:-more};;\n\tesac;;\n    (*( is a * builtin))\n\tcase ${what[(w)1]} in\n\t(compctl) man zshcompctl;;\n\t(comp*) man zshcompwid;;\n\t(bindkey|vared|zle) man zshzle;;\n\t(*setopt) man zshoptions;;\n\t(cap|getcap|setcap) ;&\n\t(clone) ;&\n\t(ln|mkdir|mv|rm|rmdir|sync) ;&\n\t(sched) ;&\n\t(echotc|echoti|sched|stat|zprof|zpty|zsocket|zstyle|ztcp) man zshmodules;;\n\t(zftp) man zshftpsys;;\n\t(*) man zshbuiltins;;\n\tesac\n\t;;\n    (*( is hashed to *))\n\tman ${what[(w)-1]:t}\n\t;;\n    (*( is a reserved word))\n\tman zshmisc\n\t;;\n    (*)\n\tif ((! didman++))\n\tthen\n\t    if whence "run-help-$1:t" >/dev/null\n\t    then\n\t\tlocal cmd_args\n\t\tbuiltin getln cmd_args\n\t\tbuiltin print -z "$cmd_args"\n\t\tcmd_args=( ${(z)cmd_args} )\n\t\t# Discard environment assignments, etc.\n\t\twhile [[ $cmd_args[1] != ${run_help_orig_cmd:-$1} ]]\n\t\tdo\n\t\t    shift cmd_args || return 1\n\t\tdone\n\t\teval "run-help-$1:t ${(q@)cmd_args[2,-1]}"\n\t    else\n\t\tPOSIXLY_CORRECT=1 man $@:t\n\t    fi\n\tfi\n\t;;\n    esac\n    if ((i < $#places && ! didman))\n    then\n\tbuiltin print -nP "%%SPress any key for more help or q to quit%%s"\n\tbuiltin read -k what\n\t[[ $what != $newline ]] && echo\n\t[[ $what == [qQ] ]] && break\n    fi\ndone\n} always {\n  unset run_help_orig_cmd\n}')"
for i in 1 2; do
  printf '%s\0' "$x"
done | fzf --read0 --query setcap