update setup to not overwrite

setup.sh

@@ -1,6 +1,22 @@
 #!/usr/bin/env bash
 set -euo pipefail
 
+# CLI: parse flags
+PROMPT_DELETE=1
+while [[ $# -gt 0 ]]; do
+  case "$1" in
+    --no-prompt|-n)
+      PROMPT_DELETE=0
+      shift
+      ;;
+    --prompt|-p)
+      PROMPT_DELETE=1
+      shift
+      ;;
+    *) break
+  esac
+done
+
 echo ">>> Bootstrapping new Debian-like machine..."
 
 # 1. Update package list and install essentials
@@ -23,10 +39,32 @@ dotfiles() {
 }
 echo ">>> Checking out dotfiles..."
 if ! dotfiles checkout; then
-    echo ">>> Conflicts detected! Backing up existing dotfiles..."
-    mkdir -p $HOME/.dotfiles-backup
-    dotfiles checkout 2>&1 | grep -E "\s+\." | awk '{print $1}' | \
-      xargs -I{} mv {} $HOME/.dotfiles-backup/{}
+    echo ">>> Conflicts detected! Handling conflicting dotfiles..."
+    mkdir -p "$HOME/.dotfiles-backup"
+
+    # Gather conflicts (paths with spaces supported)
+    conflicts=$(dotfiles checkout 2>&1 | grep -E "\s+\." | awk '{print $1}')
+    if [ -n "$conflicts" ]; then
+        if [ "$PROMPT_DELETE" = "0" ]; then
+            while IFS= read -r f; do
+                [ -z "$f" ] && continue
+                mv "$f" "$HOME/.dotfiles-backup/$f"
+            done <<< "$conflicts"
+        else
+            while IFS= read -r f; do
+                [ -z "$f" ] && continue
+                if [ -t 1 ]; then
+                    read -r -p "Move '$f' to backup? (y/N): " resp
+                    case "$resp" in
+                        [Yy]* ) mv "$f" "$HOME/.dotfiles-backup/$f" ;;
+                        * ) echo "Skipping '$f'." ;;
+                    esac
+                else
+                    echo "Non-interactive environment detected; skipping '$f'."
+                fi
+            done <<< "$conflicts"
+        fi
+    fi
     dotfiles checkout
 fi
 
@@ -40,6 +78,4 @@ if [ ! -d ~/.tmux/plugins/tpm ]; then
 fi
 
 
-
-echo ">>> Done! Bash, tmux, vim, and dotfiles are ready."
-
+echo ">>> Done! Bash, tmux, vim, and dotfiles are ready."