From e8e1563aad6d3f22f8c87f0d3c19b001eb14b714 Mon Sep 17 00:00:00 2001
From: Minijackson <minijackson@riseup.net>
Date: Tue, 3 May 2022 09:10:59 +0200
Subject: vim: convert autocmd to Lua, better restore position on open

---
 dotfiles/vim.lua | 71 +++++++++++++++++++++++++++++++++++++++++++++++---------
 1 file changed, 60 insertions(+), 11 deletions(-)

diff --git a/dotfiles/vim.lua b/dotfiles/vim.lua
index 619cb9b..95ba8a1 100644
--- a/dotfiles/vim.lua
+++ b/dotfiles/vim.lua
@@ -3,9 +3,9 @@
 
 vim.o.undofile = true
 vim.o.backup = true
-vim.opt.backupdir:remove(".")
+vim.opt.backupdir:remove "."
 
-vim.opt.shortmess:append("c")
+vim.opt.shortmess:append "c"
 
 vim.o.mouse = "a"
 
@@ -59,15 +59,56 @@ vim.g.mapleader = ";"
 
 -- From neovim#14420
 -- Restores the position of previously opened files
-vim.cmd [[
-	augroup LastCursorPos
-		autocmd!
-		autocmd BufReadPost * if @% !~# "\.git[\/\\]COMMIT_EDITMSG$" && line("'\"") > 1 && line("'\"") <= line("$") | exe "normal! g`\"" | endif
-	augroup end
-]]
 
--- Highlight yanked text
-vim.cmd "autocmd TextYankPost * silent! lua vim.highlight.on_yank()"
+-- Inspired by: https://github.com/ethanholz/nvim-lastplace
+
+local last_cursor_pos_augroup = vim.api.nvim_create_augroup("LastCursorPos", {})
+vim.api.nvim_create_autocmd("BufReadPost", {
+	group = last_cursor_pos_augroup,
+	desc = "Restore the position of previously opened files",
+	callback = function(opts)
+		if vim.tbl_contains({ "quickfix", "nofile", "help" }, vim.bo.buftype) then
+			return
+		end
+
+		if vim.tbl_contains({ "gitcommit", "gitrebase", "svn", "hgcommit" }, vim.bo.filetype) then
+			return
+		end
+
+		-- If a line has already been specified on the command line, we are done
+		--   nvim file +num
+		if vim.fn.line "." > 1 then
+			return
+		end
+
+		-- If the last line is set and the less than the last line in the buffer
+		if vim.fn.line [['"]] > 0 and vim.fn.line [['"]] <= vim.fn.line "$" then
+			if vim.fn.line "w$" == vim.fn.line "$" then
+				-- if the last line in the current buffer is also the last line visible
+				-- in this window
+				vim.cmd [[normal! g`"]]
+			elseif vim.fn.line "$" - vim.fn.line [['"]] > ((vim.fn.line "w$" - vim.fn.line "w0") / 2) - 1 then
+				-- if we're not at the bottom of the file, center the cursor on the
+				-- screen after we make the jump
+				vim.cmd [[normal! g`"zz]]
+			else
+				-- otherwise, show as much context as we can by jumping to the end of
+				-- the file and then to the mark. If we pressed zz here, there would be
+				-- blank lines at the bottom of the screen. We intentionally leave the
+				-- last line blank by pressing <c-e> so the user has a clue that they
+				-- are near the end of the file.
+				vim.cmd [[normal! G'"<c-e>]]
+			end
+		end
+	end,
+})
+
+vim.api.nvim_create_autocmd("TextYankPost", {
+	desc = "Highlight yanked text",
+	callback = function(opts)
+		vim.highlight.on_yank()
+	end,
+})
 
 vim.g.tex_flavor = "latex"
 
@@ -211,6 +252,7 @@ require("nvim-treesitter.configs").setup {
 
 vim.o.foldmethod = "expr"
 vim.o.foldexpr = "nvim_treesitter#foldexpr()"
+vim.opt.foldopen = { "all" }
 
 vim.api.nvim_set_hl(0, "TSCurrentScope", {
 	bg = vim.g.current_gruvbox_colors.dark0_soft[1],
@@ -337,7 +379,14 @@ vim.keymap.set(
 
 -- Text yanked into the "t register gets copied using OSC52 escape sequences
 -- (e.g. goes through SSH)
-vim.cmd "autocmd TextYankPost * if v:event.regname is 't' | OSCYankReg t | endif"
+vim.api.nvim_create_autocmd("TextYankPost", {
+	desc = "Setup for OSCYank",
+	callback = function(opts)
+		if vim.v.event.regname == "t" then
+			vim.cmd [[OSCYankReg t]]
+		end
+	end,
+})
 
 -- Diffview
 
-- 
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