Squashed 'users/daniel/configs/system/nvim/nvim/' content from commit f10b473

git-subtree-dir: users/daniel/configs/system/nvim/nvim
git-subtree-split: f10b4730176b567e15911b3c1a7c5a31c82c8b8e

lua/resession/extensions/astronvim.lua

@@ -0,0 +1,31 @@
+local M = {}
+
+M.on_save = function()
+  -- initiate astronvim data
+  local data = { bufnrs = {}, tabs = {} }
+
+  -- save tab scoped buffers and buffer numbers from buffer name
+  for _, tabpage in ipairs(vim.api.nvim_list_tabpages()) do
+    data.tabs[tabpage] = vim.t[tabpage].bufs
+    for _, bufnr in ipairs(data.tabs[tabpage]) do
+      data.bufnrs[vim.api.nvim_buf_get_name(bufnr)] = bufnr
+    end
+  end
+
+  return data
+end
+
+M.on_load = function(data)
+  -- create map from old buffer numbers to new buffer numbers
+  local new_bufnrs = {}
+  for _, bufnr in ipairs(vim.api.nvim_list_bufs()) do
+    local bufname = vim.api.nvim_buf_get_name(bufnr)
+    if bufname and bufname ~= "" then new_bufnrs[data.bufnrs[bufname]] = bufnr end
+  end
+  -- build new tab scoped buffer lists
+  for tabpage, tabs in pairs(data.tabs) do
+    vim.t[tabpage].bufs = vim.tbl_map(function(bufnr) return new_bufnrs[bufnr] end, tabs)
+  end
+end
+
+return M