Updated todo_rollover to support force flag

common/bin/todo_rollover

@@ -1,9 +1,10 @@
 #!/usr/bin/env bash
 # On-demand rollover of a todo note.
 # By default copies yesterday's note to today, pruning finished work and retitling.
-# Usage: todo_rollover [source_date] [target_date]
+# Usage: todo_rollover [--force] [source_date] [target_date]
 #   source_date defaults to yesterday (YYYY-MM-DD)
 #   target_date defaults to today
+#   --force overwrites an existing target
 #   Set TODO_NOTES to override notes directory.
 #   Set TODO_PRUNE to override prune script.
 
@@ -12,8 +13,18 @@ set -euo pipefail
 NOTES=${TODO_NOTES:-$HOME/docs/notes/todo}
 PRUNE=${TODO_PRUNE:-$HOME/.local/lib/todo/prune.py}
 
-src_date=${1:-$(date -d yesterday +%Y-%m-%d)}
-target_date=${2:-$(date +%Y-%m-%d)}
+force=0
+args=()
+for a in "$@"; do
+  if [[ $a == --force ]]; then
+    force=1
+  else
+    args+=("$a")
+  fi
+done
+
+src_date=${args[0]:-$(date -d yesterday +%Y-%m-%d)}
+target_date=${args[1]:-$(date +%Y-%m-%d)}
 
 src="$NOTES/$src_date.md"
 dst="$NOTES/$target_date.md"
@@ -23,7 +34,7 @@ if [[ ! -f $src ]]; then
   exit 1
 fi
 
-if [[ -f $dst ]]; then
+if [[ -f $dst && $force -eq 0 ]]; then
   echo "todo_rollover: target $dst already exists, skipping (use --force to overwrite)" >&2
   echo "  Existing target was created from a previous rollover. If you really want to replace it, remove it first." >&2
   exit 2