Re: Use current file name in the current file?

On Monday, January 14, 2013 10:32:04 AM UTC-6, Jack Gates wrote:
>
> > In what context? Do you want to insert the file name into the file? Access the file name on the command-line? Something else? If you tell us what you're trying to accomplish we can help better.
>
> I was thinking about using the file name in a mapping doing s///
> editing a chunk of text dumped in the file from a register. I really
> don't know what to ask because I don't really understand this enough
> to figure out how I might use it. In one of my emails I was asking
> about doing s/// and using the contents from a register on the RHS.
>

What would you need the filename for? Do you need to change it at all?

You can put the filename unchanged into the command-line or the file text using CTRL-R followed by % (if you're in the command-line, or in insert mode).

You can access the filename in a script using expand("%"). You can add modifiers, for example if the current file is /a/b/c.txt, you can get "/a/b" with expand("%:p:h").

You can use the filename without ever expanding it in certain commands, for example if you're editing myfile.c and want to also view myfile.h you can use a command like:

:split %:r.h

See :help filename-modifiers, :help expand(), :help fnamemodify()

> Doing this manually is easier to accomplish than it is trying to get a
> mapping to do things automated so I don't have to do it manually.
>
> Figuring out how to use "% will probably also answer my question in
> the newest post I made today.
>
> I have a series of commands that are nearly complete. So I can yank
> some text execute the mapping and have it create a new file from start
> to finish with the yanked text.
>

If you build the name of the new file from the current file's name, it's probably easiest to use the last method I show.

For example, when editing a.txt, if you want to create file a.1.txt and a.2.txt, you can use:

:new %:r.1.%:e

If it's more complex, for example if you want to include today's date in the filename, you probably want to use the :execute and expand() instead:

:execute "new" expand("%:r").strftime(".%Y-%m-%d.").expand("%:e")

Also see my comment about using :write on your other thread. Maybe you don't need to yank anything.

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