How to Set the Tabline to a Multi-Word String in Vimscript

Vim is a powerful text editor that allows users to customize various aspects of its interface. One such customization is setting the tabline, which is the line that displays information about open tabs. By default, Vim displays the name of each tab as a single word. However, it is possible to set the tabline to a multi-word string using Vimscript.

To set the tabline to a multi-word string, you will need to modify your Vim configuration file, which is typically located at ~/.vimrc on Unix-based systems or _vimrc on Windows.

Here are the steps to set the tabline to a multi-word string:

1. Open your Vim configuration file using a text editor.
2. Add the following line to the file:

set tabline=%!MyTabline()

This line sets the tabline to the output of the MyTabline() function.

3. Define the MyTabline() function in your Vim configuration file. Here's an example:

function! MyTabline()
  let s = ''
  for i in range(tabpagenr('$'))
    " Add the tab number
    let s .= '%' . (i + 1) . 'T'
    " Add a space
    let s .= ' '
    " Add the tab name
    let s .= '%' . (i + 1) . 't'
    " Add a space
    let s .= ' '
  endfor
  return s
endfunction

This function iterates over each tab and appends the tab number and name to the s variable. The tabpagenr('$') function returns the total number of tabs, and the range() function creates a list of tab numbers from 1 to the total number of tabs.

Finally, the function returns the s variable, which contains the multi-word string that will be displayed as the tabline.

Save the Vim configuration file and restart Vim for the changes to take effect. You should now see the tabline displaying the tab numbers and names as a multi-word string.

Setting the tabline to a multi-word string allows you to customize the appearance of the tabline and provide more meaningful information about each tab. You can modify the MyTabline() function to display additional information, such as the file type or modified status, depending on your preferences.

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