claude-hunk: two-stage fzf picker (file, then line range) that copies 'path:start-end' + the selected snippet to the clipboard — handy for pasting code into Claude Code or any LLM chat

claude-hunk

#!/usr/bin/env bash
set -euo pipefail

relative=0
while [ $# -gt 0 ]; do
  case "$1" in
    -r|--relative) relative=1 ;;
    -h|--help)
      echo "usage: claude-hunk [-r|--relative]"
      exit 0
      ;;
    *) echo "unknown flag: $1" >&2; exit 2 ;;
  esac
  shift
done

# Stage 1: pick a file. git ls-files inside a repo, rg --files elsewhere.
file=$(
  { git ls-files 2>/dev/null || rg --files; } \
  | fzf --prompt='file> ' \
        --layout=reverse \
        --height=80% \
        --preview 'bat --color=always --style=numbers --line-range=:500 {}' \
        --preview-window='right:60%'
) || exit 130

[ -f "$file" ] || { echo "not a file: $file" >&2; exit 1; }
[ "$relative" -eq 1 ] && path=$file || path=$(realpath "$file")

# Stage 2: multi-select line-numbered rows.
picked=$(
  awk '{ printf "%6d\t%s\n", NR, $0 }' "$file" \
  | fzf --multi \
        --delimiter=$'\t' \
        --prompt='lines (TAB to extend, ENTER to confirm)> ' \
        --layout=reverse \
        --height=80%
) || exit 130

[ -n "$picked" ] || exit 130

# min/max of selected line numbers -> contiguous range (gaps get filled in).
read -r start end < <(
  printf '%s\n' "$picked" \
  | awk -F'\t' 'NR==1{min=max=$1+0; next} {n=$1+0; if(n<min)min=n; if(n>max)max=n} END{print min, max}'
)

out=$(
  printf '%s:%d-%d\n\n```\n' "$path" "$start" "$end"
  sed -n "${start},${end}p" "$file"
  printf '```\n'
)

printf '%s' "$out" | pbcopy
printf '%s\n' "$out"