I need to replace a certain word across multiple files in vim, I've found that I'm able to do it if I open each file in a buffer, but when trying to open all of the files that need replacing vim declares that there are "too many file names". There's a plugin that enables what I need, but I was wondering if there's a solution that I'm unaware of that doesn't require a plugin.
You can always write your own script. Here is what I would do:
You need a new vim session for this though.