Fixes bugs in vimrecover

bin/vim-recover

@@ -1,16 +1,21 @@
 #!/usr/bin/env bash
 
 # Check recovery directory from vim
+if [ $# -lt 1 ]; then
+    echo -e >&2 "\033[31;1merror:\033[0m vim-recover expects an argument"
+    exit 1
+fi
+
 if [ -f $1 ]; then
-    echo >&2 Cannot recover an existing file...
-    return 1
+    echo -e >&2 "\033[31;1merror:\033[0m cannot recover an existing file"
+    exit 1
 fi
 
 backup_path=~/.nvim/backups/`echo $PWD/$1 | tr '/' '%'`
 
 if [ ! -f "$backup_path" ]; then
-    echo >&2 Backup not found...
-    return 2
+    echo -e >&2 "\033[31;1merror:\033[0m backup not found"
+    exit 2
 fi
 
 cp $backup_path $1