當你要使用 vim（或者neovim）來編輯 Svelte 下面的文件時，比如這些文件：

+page.svelte
+layout.svelte$ vim +page.svelte
$ vim "+page.svelte"
$ vim '+page.svelte'
$ vim \+page.svelte

使用上面的命令，你會遇到這個錯誤：

Error detected while processing command line:
E492: Not an editor command: page.svelte

難搞啊，我教你一個簡單方法，使用--選項就可以了，此選項的意思是，后面的參數都視作文件名：

$ vim -- +page.svelte

具體解釋：

The problem you’re encountering is because the + character is special to Neovim (and Vim) when used as an argument on the command line.

Neovim interprets arguments starting with + in several ways:

• +N: Go to line N after opening the file.
• +/pattern: Search for pattern after opening the file.
• +command: Execute command after opening the file.

When you type nvim +page.svelte, Neovim thinks page.svelte is a command it should execute, and since page.svelte isn’t a valid Neovim command, it gives you E492: Not an editor command.

The shell escaping (", ', \) doesn’t help here because the + character isn’t special to the shell in this context; it’s special to the nvim program itself. The shell successfully passes +page.svelte to nvim, but nvim then misinterprets it.

The Correct Way

The standard Unix way to tell a command-line program that “all subsequent arguments are filenames, not options or commands” is to use --.

nvim -- +page.svelte

Explanation:

• nvim: The Neovim executable.
• --: This tells nvim to stop processing command-line options and treat everything that follows as a filename or argument for a file.
• +page.svelte: Now Neovim correctly interprets this as the literal filename you want to open.

Other Ways (Less Direct, but Work)

1. Using :edit command:
   You can open Neovim first, then use the :edit command.

   nvim
   :edit \+page.svelte
   

   Or directly from the command line:

   nvim -c "edit +page.svelte"
   

   (The -c flag executes a command after startup.)

2. Using argv (argument vector) with :edit:
   This is less common for simple cases but demonstrates flexibility.

   nvim '+page.svelte' --remote-send '<Esc>:edit %<CR>'
   

   (This is overcomplicating it, but shows how you can pass filenames and then manipulate them, but nvim -- +page.svelte is far superior for this specific need).

The recommended and simplest solution is nvim -- +page.svelte.