agitator.nvim

agitator is a neovim/lua plugin providing some git-related functions:

blame

Blame adds a window on the left side of your window with blame information for the file. The sidebar is scroll bound to the main file window. Three functions are exported:

• git_blame({sidebar_width?, formatter?}): open the sidebar. The default width is 30 characters, you can optionally pass another width in a record, eg {sidebar_width = 20}. You can also pass in a formatter function, to display the commit information, see lower;
• git_blame_close(): close the blame sidebar;
• git_blame_toggle(): toggle (open or close) the blame sidebar.
• git_blame_commit_for_line(): get the git commit SHA for the current line, as string.

This last function, to get the commit SHA, can allow to display the commit for a certain line of code. However you'll need an external plugin to display the commit, such as neogit or diffview.nvim. Here is an example of integration with diffview:

function _G.ShowCommitAtLine()
    local commit_sha = require"agitator".git_blame_commit_for_line()
    vim.cmd("DiffviewOpen " .. commit_sha .. "^.." .. commit_sha)
end

The formatter function for git_blame() lets you customize the rendering of the blame information. For instance, you could call:

require'agitator'.git_blame{formatter=function(r) return r.author .. " => " .. r.summary; end}

And you'd get in a sidebar the author and the commit summary instead of the author and date, which is the default. The formatter function receives a single parameter, which has the following fields:

• author
• summary
• date, which is a os.date which has among others year month and day fields.

git find file

Git find file will open two telescope pickers in succession. The first one to pick a git branch; the second one to pick a file from that branch. The selected file from another branch is then displayed in a read-only buffer.

• open_file_git_branch()

search in git branch

search git branch will open two telescope pickers in succession. The first one to pick a git branch; the second one to enter text to search for in that branch. The selected file from another branch is then displayed in a read-only buffer.

• search_git_branch()

search in added lines

search in added will open a telescope picker to search in lines that you've added compared to your git checkout: basically you search in the git diff.

• search_in_added()

time machine

The time machine allows you to see the history of a single file through time. It opens a new read-only window, where you can navigate through past versions of the file and view their contents. Details about the currently displayed version appear in a popup window at the bottom-right.

• git_time_machine({use_current_win?, set_custom_shortcuts?, popup_last_line?, popup_width?})

You can pass in {use_current_win: true} to reuse the current window instead of creating a new one.

set_custom_shortcuts allows to customize the shortcuts for the time machine. It should be a function, that'll receive the buffer number of the time machine. You should set up the autocommands you want; you can reproduce the default behavior with this implementation:

{
  set_custom_shortcuts = function(code_bufnr)
    vim.keymap.set('n', '<c-p>', function()
      require"agitator".git_time_machine_previous()
    end, {buffer = code_bufnr})
    vim.keymap.set('n', '<c-n>', function()
      require"agitator".git_time_machine_next()
    end, {buffer = code_bufnr})
    vim.keymap.set('n', '<c-h>', function()
      require"agitator".git_time_machine_copy_sha()
    end, {buffer = code_bufnr})
    vim.keymap.set('n', 'q', function()
      require"agitator".git_time_machine_quit()
    end, {buffer = code_bufnr})
  end
}

If you change the shortcuts for instance, you'd probably want to change the shortcut hints at the bottom of the popup window. You can do that with the popup_last_line option. You can reproduce the default behavior with this implementation:

{ popup_last_line = '<c-p> Previous | <c-n> Next | <c-h> Copy SHA | [q]uit' }

You can also change the popup width with popup_width. The default value is currently 53.

General

To call any function, if you use a plugin manager such as Packer, you must prepend require('agitator'). For instance require('agitator').git_blame().

I'm really a beginner in nvim/lua, so don't be surprised if some things are strangely or wrongly implemented. There are also a couple of ugly hacks. Pull requests are welcome. I'll do my best to fix bugs, but don't expect too much.

This plugin has two dependencies: telescope.nvim and plenary.nvim.

The plugin is meant to be combined with gitsigns, neogit and diffview, so I won't add features covered by these.