blame.nvim is a fugitive.vim style git blame visualizer for Neovim.

Window:

Virtual:

Same commits are highlighted in the same color

return {
  {
    "FabijanZulj/blame.nvim",
    lazy = false,
    config = function()
      require('blame').setup {}
    end,
  },
}

return {
  {
    "FabijanZulj/blame.nvim",
    lazy = false,
    config = function()
      require('blame').setup {}
    end,
    opts = {
      blame_options = { '-w' },
    },
  },
}

The following commands are used:

• BlameToggle [view] [options] - Toggle the blame with provided view and options.
  • If no view is provided, it opens the default (window) view.
  • If no options are provided, it fall back to blame_options.

There are two built-in views:

• window - fugitive style window to the left of the current window
• virtual - blame shown in a virtual text floated to the right

Default config:

{
    date_format = "%d.%m.%Y",
    virtual_style = "right_align",
    relative_date_if_recent = true -- this is relative only for the latest month
    views = {
        window = window_view,
        virtual = virtual_view,
        default = window_view,
    },
    focus_blame = true,
    merge_consecutive = false,
    max_summary_width = 30,
    colors = nil,
    blame_options = nil,
    commit_detail_view = "vsplit",
    format_fn = formats.commit_date_author_fn,
    mappings = {
        commit_info = "i",
        stack_push = "<TAB>",
        stack_pop = "<BS>",
        show_commit = "<CR>",
        close = { "<esc>", "q" },
        copy_hash = "y",
        open_in_browser = "o",
    }
}

These are the fields you can configure by passing them to the require('blame').setup({}) function:

• date_format - string - Pattern for the date, '%r' for relative date
• virtual_style - "right_align" or "float" - Float moves the virtual text close to the content of the file.
• views - views that can be used when toggling blame
• focus_blame - boolean - Focus on the blame window when it's opened as well as blame stack push/pop
• merge_consecutive - boolean - Merge consecutive blames that are from the same commit
• max_summary_width - If date_message is used, cut the summary if it excedes this number of characters
• colors - list of RGB strings to use instead of randomly generated RGBs for highlights
• blame_options - list of blame options to use for git blame. If nil, then no options are used
• commit_detail_view - string | function - "tab"|"split"|"vsplit"|"current" - Open commit details in a new tab, split, vsplit or current buffer function(commit_hash, row, file_pat) ... end - Calls function and passes commit hash, caller current row and file path
• format_fn - format function that is used for processing of porcelain lines. See below for details ( built-in: ("blame.formats.default_formats").date_message and ("blame.formats.default_formats").commit_date_author_fn )
• mappings - custom mappings for various actions, you can pass in single or multiple mappings for an action.

You can see the state of the file prior to selected commit using stack_push(default: <TAB>) and stack_pop (default: <BS>) mappings. In the pop-up on the right the stack is shown and you can go back and forward through the history of the file.

To see the full commit info pop-up press the commit_info(default: 'i') mapping on the specific commit line. (press i again to move into the popup window, or move cursor to close the popup)

Details

To see the full commit data press the show_commit(default <CR>) mapping on the commit line

Details

Press copy_hash (default: y) on a commit line to copy the full commit hash to the clipboard (both + and " registers).

Press open_in_browser (default: o) on a commit line to open the commit in your default browser. Supports GitHub, GitLab, and Bitbucket.

You can provide custom format functions that get executed for every blame line and are shown in a view. By default highlight is created for each commit hash so it can be used in hl field.

Signature of the function:

FormatFn fun(line_porcelain: Porcelain, config:Config, idx:integer):LineWithHl

where LineWithHl is:

---@class LineWithHl
---@field idx integer
---@field values {textValue: string, hl: string}[]
---@field format string

And Porcelain being:

---@class Porcelain
---@field author string
---@field author_email string
---@field author_time number
---@field author_tz string
---@field committer string
---@field committer_mail string
---@field committer_time number
---@field committer_tz string
---@field filename string
---@field hash string
---@field previous string
---@field summary string
---@field content string

Built in format functions are:

("blame.formats.default_formats").date_message

• {commit date} {summary}

("blame.formats.default_formats").commit_date_author_fn

• {commit hash} {commit date} {author}

Your function must return a list of values ({textValue: string, hl: string}). Those text fragments will be formatted with provided format field and highlighted with the HiglightGroup given in hl

for more info check the implementations for 'date_message' or 'commit_date_author_fn'

It is also possible to implement your custom view. To implement a custom view you need to implement this interface:

---@class BlameView
---@field new fun(self, config: Config) : BlameView
---@field open fun(self, lines: Porcelain[])
---@field is_open fun(): boolean
---@field close fun(cleanup: boolean)

And add it to the config field table views See 'blame.views.window_view' and 'blame.views.virtual_view' for examples

These user events are emitted

• BlameViewOpened
• BlameViewClosed

So you can do something like this: there are some conflicts with some winbar plugins, in this case barbecue is toggled

vim.api.nvim_create_autocmd("User", {
    pattern = "BlameViewOpened",
    callback = function(event)
        local blame_type = event.data
        if blame_type == "window" then
            require("barbecue.ui").toggle(false)
        end
    end,
})

vim.api.nvim_create_autocmd("User", {
    pattern = "BlameViewClosed",
    callback = function(event)
        local blame_type = event.data
        if blame_type == "window" then
            require("barbecue.ui").toggle(true)
        end
    end,
})