gistfile1

#!/bin/bash
ISSUES=/home/madx/repos/mine/bit/issues

function bit_nl() { nl -nln -w1 -s $@ }

function bit_before() {
  line="$(bit_nl $ISSUES)"
}

function bit_chunk() {
  
}

function bit_after() {
  
}
case "$1" in
  list)
    echo "$ISSUES" | grep --color=never -P "#\d+ \[(_|~|X)\]"
    ;;

  show)
    start="$2"
    end="$(( start + 1))"
    NLISSUES="$(echo "$ISSUES" | nl -nln -w1 -s' ')"
    start="$(
      echo "$NLISSUES" | grep -P "^\d+ #$start" | sed 's/^\([0-9]\{1,\}\).*/\1/'
    )"
    end="$(
      echo "$NLISSUES" | grep -P "^\d+ #$end" | sed 's/^\([0-9]\{1,\}\).*/\1/'
    )"
    if [ -z "$end" ]; then
      end="$(( $(echo "$ISSUES" | wc -l) + 1 ))"
    fi
    len="$(( end - start ))"
    echo "$ISSUES" | tail -n+$start | head -$len
    ;;

  edit)
    ;;

  *)
    echo "unknown command '$command'"
    ;;
esac