gennaro-tedesco/nvim-possession

github

session

176

1

1

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CREATED

2023-01-11

UPDATED

7 months ago

---

You are puzzled by neovim sessions and are not using them, are you? Start your pos-sessions journey, fear no more!

This plugin is a no-nonsense session manager built on top of fzf-lua (required) that makes managing sessions quick and visually appealing: dynamically browse through your existing sessions, create new ones, update and delete with a statusline component to remind you of where you are. See for yourself:

🔌 Installation and quickstart

Install nvim-possession with your favourite plugin manager (fzf-lua is required) and invoke require("nvim-possession").setup({}); in order to avoid conflicts with your own keymaps we do not set any mappings but only expose the interfaces, which means you would need to define them yourself. The suggested quickstart configuration is, for instance

• with lazy.nvim

{
    "gennaro-tedesco/nvim-possession",
    dependencies = {
        "ibhagwan/fzf-lua",
    },
    config = true,
    init = function()
        local possession = require("nvim-possession")
        vim.keymap.set("n", "<leader>sl", function()
            possession.list()
        end)
        vim.keymap.set("n", "<leader>sn", function()
            possession.new()
        end)
        vim.keymap.set("n", "<leader>su", function()
            possession.update()
        end)
        vim.keymap.set("n", "<leader>sd", function()
            possession.delete()
        end)
    end,
}

Exposed interfaces

🛠 Usage and advanced configuration

As shown above the main use of the plugin is to show all existing sessions (say via <leader>sl) and load the selected one upon <CR>. Once a session is loaded a global variable is defined containing the session name (to display in a statusline - see below - or to validate which session is currently active). New sessions can also be created and updated on the fly, and they will show when you next invoke the list.

Default configurations can be found in the config and can be overriden at will by passing them to the setup({}) function: in particular the default location folder for sessions is vim.fn.stdpath("data") .. "/sessions/",. You should not need to change any of the default settings, however if you really want to do so:

require("nvim-possession").setup({
    sessions = {
        sessions_path = ... -- folder to look for sessions, must be a valid existing path
        sessions_variable = ... -- defines vim.g[sessions_variable] when a session is loaded
        sessions_icon = ...-- string: shows icon both in the prompt and in the statusline
        sessions_prompt = ... -- fzf prompt string
    },

    autoload = false, -- whether to autoload sessions in the cwd at startup
    autosave = true, -- whether to autosave loaded sessions before quitting
    autoswitch = {
        enable = false -- whether to enable autoswitch
        exclude_ft = {}, -- list of filetypes to exclude from autoswitch
    }

    save_hook = nil -- callback, function to execute before saving a session
                    -- useful to update or cleanup global variables for example
    post_hook = nil -- callback, function to execute after loading a session
                    -- useful to restore file trees, file managers or terminals
                    -- function()
                    --     require('FTerm').open()
                    --     require('nvim-tree').toggle(false, true)
                    -- end

    fzf_winopts = {
        -- any valid fzf-lua winopts options, for instance
        width = 0.5,
        preview = {
            vertical = "right:30%"
        }
    }
})

🪄 Automagic

If you want to automatically load sessions defined for the current working directory at startup, specify

require("nvim-possession").setup({
    autoload = true -- default false
})

This autoloads sessions when starting neovim without file arguments (i. e. $ nvim ) and in case such sessions explicitly contain a reference to the current working directory (you must have vim.go.ssop+=curdir); this is by design as this plugin intends to be as less invasive as possible.

Sessions are automatically saved before quitting, should buffers be added or removed to them. This defaults to true (as it is generally expected behaviour), if you want to opt-out specify

require("nvim-possession").setup({
    autosave = false -- default true
})

When switching between sessions it is often desirable to remove pending buffers belonging to the previous one, so that only buffers with the new session files are loaded. In order to achieve this behaviour specify

require("nvim-possession").setup({
    autoswitch = {
        enable = true, -- default false
    }
})

this option autosaves the previous session and deletes all its buffers before switching to a new one. If there are some filetypes you want to always keep, you may indicate them in

require("nvim-possession").setup({
    autoswitch = {
        enable = true, -- default false
        exclude_ft = {"...", "..."}, -- list of filetypes to exclude from deletion
    }
})

A note on lazy loading: this plugin is extremely light weight and it generally loads in no time: practically speaking there should not be any need to lazy load it on events. If you are however opting in the autoload = true feature, notice that by definition such a feature loads the existing session buffers in memory at start-up, thereby also triggering all other buffer related events (especially treesitter); this may result in higher start-up times but is independent of the plugin (you would get the same loading times by manually sourcing the session files).

Save-hook

Before saving a session, you can run actions that may update state or perform cleanup before updating the session.

For example, you may want to only save visible buffers to the session. This could be useful if loading a lot of buffers leads to slow startup. Or maybe you want to keep the tabline clean. To do so, you can use:

require("nvim-possession").setup({
    save_hook = function()
        -- Get visible buffers
        local visible_buffers = {}
        for _, win in ipairs(vim.api.nvim_list_wins()) do
            visible_buffers[vim.api.nvim_win_get_buf(win)] = true
        end

        local buflist = vim.api.nvim_list_bufs()
        for _, bufnr in ipairs(buflist) do
            if visible_buffers[bufnr] == nil then -- Delete buffer if not visible
                vim.cmd("bd " .. bufnr)
            end
        end
    end
})

Post-hook

After loading a session you may want to specify additional actions to run that may not be have been saved in the session content: this is often the case for restoring file tree or file managers, or open up terminal windows or fuzzy finders or set specific options. To do so you can use

require("nvim-possession").setup({
    post_hook = function()
        require("FTerm").open()
        require('nvim-tree').toggle(false, true)
        vim.lsp.buf.format()
    end
})

🚥 Statusline

You can call require("nvim-possession").status() as component in your statusline, for example with lualine you would have

lualine.setup({
    sections = {
        lualine_a = ...
        lualine_b = ...
        lualine_c = {
            { "filename", path = 1 },
            {
                require("nvim-possession").status,
                cond = function()
                    return require("nvim-possession").status() ~= nil
                end,
            },
        },
    }
})

to display

the component automatically disappears or changes if you delete the current session or switch to another one.

Feedback

If you find this plugin useful consider awarding it a ⭐, it is a great way to give feedback! Otherwise, any additional suggestions or merge request is warmly welcome!