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#!/bin/sh
# acmetodo-toggle: Toggles the status of a selected todo item.
PLAN9=${PLAN9:-"/usr/local/plan9"}
TODO_FILE="$PLAN9/lib/todo"
ACME_BIN="$PLAN9/bin/acme"
# Read the selected line(s) from standard input (Acme pipes the selection)
selected_lines=$(cat)
if [ -z "$selected_lines" ]; then
echo "No line selected to toggle." >/dev/stderr
exit 1
fi
# Process only the first line of the selection for toggling
line_to_toggle=$(echo "$selected_lines" | head -n 1)
new_line=""
case "$line_to_toggle" in
'[] '*)
new_line="[>] ${line_to_toggle:3}" # Extract content after '[ ]'
;;
'[>] '*)
new_line="[x] ${line_to_toggle:3}" # Extract content after '[>]'
;;
'[x] '*)
new_line="[ ] ${line_to_toggle:3}" # Extract content after '[x]'
;;
*)
echo "Warning: Selected line does not match a known todo item format: $line_to_toggle" >/dev/stderr
exit 0 # Exit gracefully if not a todo item
;;
esac
if [ -n "$new_line" ]; then
# Use awk for a robust in-place replacement.
# It reads the entire file, replaces the first exact match, then prints.
awk -v old_line="$line_to_toggle" -v new_line="$new_line" '
BEGIN { replaced = 0 }
$0 == old_line && !replaced {
print new_line
replaced = 1
next
}
{ print }
' "$TODO_FILE" > "${TODO_FILE}.tmp" && mv "${TODO_FILE}.tmp" "$TODO_FILE"
# Find the winid of the main acmetodo window to refresh it.
MAIN_TODO_WINID=$($ACME_BIN -w | grep "^$TODO_FILE" | cut -d' ' -f1 | head -n 1)
if [ -n "$MAIN_TODO_WINID" ]; then
echo 'Get' | $ACME_BIN -a "$MAIN_TODO_WINID"
else
echo "Warning: Main acmetodo window not found to refresh." >/dev/stderr
fi
fi
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