Yank file name path of current buffer in Vim

Vim, the ubiquitous command-line text editor, is a powerhouse for developers and writers alike. Its efficiency lies in its keyboard-centric approach, enabling lightning-fast editing and manipulation of text. One common task involves obtaining the filename or path of the currently open buffer, whether for scripting, automation, or simply integrating with other commands. This article dives into the various methods for yanking the filename or path in Vim, offering solutions for diverse scenarios and workflows, and empowering you to harness the full potential of this versatile editor.

Understanding Vim’s Buffers and Paths

Before we delve into the specifics of yanking filenames and paths, it’s crucial to grasp Vim’s buffer concept. A buffer represents an open file or a scratchpad within Vim. Each buffer has an associated filename and path, even if it’s a new unsaved file. Understanding this distinction is crucial for effectively retrieving the information you need.

Vim distinguishes between the full path, relative path, and filename. The full path provides the complete location of the file on your system. The relative path specifies the file’s location relative to the current working directory. The filename, of course, is simply the name of the file itself.

Mastering these concepts allows for greater flexibility and precision when working with files in Vim.

Yanking the Full Path

The most common method for yanking the full path involves using the :echo expand('%:p') command. This command expands the % wildcard (representing the current file) to its full path. The :p suffix ensures the full path is displayed. You can then yank this output using the standard y command in normal mode.

For example, if your current file is /home/user/documents/myfile.txt, executing :echo expand('%:p') will display /home/user/documents/myfile.txt, which you can then yank.

This is a straightforward and efficient method for retrieving the full path.

Yanking the Relative Path

Sometimes, you might need the relative path instead of the full path. This is especially useful when working with projects where file locations are relative to a project root. The command :echo expand('%') (without the :p suffix) provides the relative path. Similarly, :echo expand('%:~') provides the path relative to the user’s home directory.

So, if your current working directory is /home/user/documents and your file is /home/user/documents/project/myfile.txt, :echo expand('%') returns project/myfile.txt.

This allows for more context-aware path retrieval.

Yanking Just the Filename

Extracting only the filename is also a common requirement. The :echo expand('%:t') command fulfills this need. The :t suffix instructs Vim to return only the tail of the path, which is the filename.

Continuing the previous example, :echo expand('%:t') would return myfile.txt.

This provides a concise way to grab just the filename.

Automating the Process with Mappings

For frequent users, mapping these commands to key combinations significantly streamlines workflow. For instance, you could map yanking the full path to a key combination like this: nnoremap <leader>fp :echo expand('%:p')<cr>y</cr></leader>. Now, pressing \fp (assuming your leader key is \) will automatically yank the full path.

This allows you to quickly access the information you need without typing lengthy commands.

Customizing mappings like this can dramatically enhance your Vim productivity.

• Use expand('%:p') for full path.
• Use expand('%') for relative path.

1. Open the file in Vim.
2. Enter command mode by pressing :.
3. Type echo expand('%:p') (or the appropriate variant) and press Enter.
4. Press y in normal mode to yank the output.

“Vim’s power comes from its flexibility. Mastering commands like ’expand’ allows for incredible control over your workflow.” - Vim Power User

Learn more Vim tips and tricks here. Featured Snippet: Quickly yank the filename in Vim using :echo expand('%:t') followed by y in normal mode. This simple command gives you immediate access to the current file’s name for use in other commands or scripts.

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Frequently Asked Questions

Q: What is the difference between % and `` in Vim?

A: % refers to the current buffer’s file, while `` refers to the alternate buffer’s file.

By mastering these techniques, you gain a significant advantage in navigating and manipulating files within Vim. These methods, combined with the ability to create custom mappings, transform your Vim experience from efficient to truly powerful. Start incorporating these strategies today and unlock new levels of productivity in your text editing workflow. Explore further resources on Vim scripting and file management to broaden your skillset and optimize your development environment. Remember, continuous learning is key to unlocking the full potential of this incredible editor. Visit Vim’s official documentation for comprehensive information and explore communities like Vim Stack Exchange for practical tips and troubleshooting. For more advanced scripting techniques, check out Learn Vimscript the Hard Way.

Question & Answer :
Assuming the current buffer is a file open for edit, so :e does not display E32: No file name.

I would like to yank one or all of:

• The file name exactly as show on the status line, e.g. ~\myfile.txt
• A full path to the file, e.g. c:\foo\bar\myfile.txt
• Just the file name, e.g. myfile.txt

TL;DR

:let @" = expand("%")

this will copy the file name to the unamed register, then you can use good old p to paste it. and of course you can map this to a key for quicker use.

:nmap cp :let @" = expand("%")<cr>

you can also use this for full path

:let @" = expand("%:p")

Explanation

Vim uses the unnamed register to store text that has been deleted or copied (yanked), likewise when you paste it reads the text from this register.

Using let we can manually store text in the register using :let @" = "text" but we can also store the result of an expression.

In the above example we use the function expand which expands wildcards and keywords. in our example we use expand('%') to expand the current file name. We can modify it as expand('%:p') for the full file name.

See :help let :help expand :help registers for details