Non-typical applications of fzf

fzf-stuff.sh

# A TODO repl where hitting enter toggles the status of the task, alt+a adds a task (with text from the query), and alt+d deletes the selected task
# Assuming todo_file is a document that looks something like this:
# - [ ] Task 1
# - [x] Task 2
# - [ ] Task 3
#     - [ ] Subtask 1
# etc

#!/bin/bash

TODO_FILE="${TODO_FILE:-/home/francis/.todo.md}"
touch $TODO_FILE

help_text="[enter] Toggle task state\n[alt-a] Add task (from query)\n[alt-d] Delete task\n[alt-p] Indent +\n[alt-o] Indent -\n[alt-i] Move up\n[alt-k] Move down"

cat -n $TODO_FILE | sed -E 's/\s*([0-9]+)\s(.+)/\1::\2/' | fzf \
  --layout reverse-list \
  --delimiter '::' \
  --list-label 'TODO List' \
  --preview "echo '$help_text'" \
  --with-nth '{2..}' \
  --bind "enter:execute-silent(sed -Ei '{1}s/(.+?)\[ \]/\1__CHECK__/; {1}s/(.+?)\[x\]/\1[ ]/; {1}s/(.+?)__CHECK__/\1[x]/' $TODO_FILE)+reload(cat -n $TODO_FILE | sed -E 's/\s*([0-9]+)\s(.+)/\1::\2/')+clear-query" \
  --bind "alt-a:execute-silent(echo '- [ ] {q}' >> $TODO_FILE)+reload(cat -n $TODO_FILE | sed -E 's/\s*([0-9]+)\s(.+)/\1::\2/')+clear-query" \
  --bind "alt-d:execute-silent(sed -i '{1}d' $TODO_FILE)+reload(cat -n $TODO_FILE | sed -E 's/\s*([0-9]+)\s(.+)/\1::\2/')+clear-query" \
  --bind "alt-p:execute-silent(sed -Ei '{1}s/(.+)/    \1/' $TODO_FILE)+reload(cat -n $TODO_FILE | sed -E 's/\s*([0-9]+)\s(.+)/\1::\2/')" \
  --bind "alt-o:execute-silent(sed -Ei '{1}s/    (.+)/\1/' $TODO_FILE)+reload(cat -n $TODO_FILE | sed -E 's/\s*([0-9]+)\s(.+)/\1::\2/')" \
  --bind "alt-i:execute-silent(bash -c 'sed -i \"\$((\$1 - 1)){h;d}; \$1{G}\" $TODO_FILE' _ {1})+reload(cat -n $TODO_FILE | sed -E 's/\s*([0-9]+)\s(.+)/\1::\2/')" \
  --bind "alt-k:execute-silent(bash -c 'sed -i \"\$1{h;d}; \$((\$1 + 1)){G}\" $TODO_FILE' _ {1})+reload(cat -n $TODO_FILE | sed -E 's/\s*([0-9]+)\s(.+)/\1::\2/')"

Interactive JQ repl, but only executes query when pressing enter

echo "" | fzf \
    --disabled \
    --ansi \
    --layout reverse-list \
    --list-label "Interactive JQ [$1]" \
    --bind "enter:reload(jq --color-output {q} $1)" \
    --bind "start:change-query(.)+reload(jq --color-output {q} $1)" \
    --bind "esc:become(echo {q})"