nvim: Improve jj diff conflict resolution

Currently invoked via `jj resolve --tool diffconflicts`

nvim/.config/nvim/lazy-lock.json

@@ -29,6 +29,7 @@
   "hunk.nvim": { "branch": "master", "commit": "1e0a4d719c780bb8b0690a54915601508ced321e" },
   "image.nvim": { "branch": "master", "commit": "a4638ec549c6aa56264cb0371255192ff37a8a90" },
   "img-clip.nvim": { "branch": "main", "commit": "0bb8b5ced45c2672c70184c87d014194b0705815" },
+  "jj-diffconflicts": { "branch": "feat/remove-instruction-message", "commit": "ee3f9179b2ab94d5177d3935fbf2bc94258d3541" },
   "jupytext.nvim": { "branch": "main", "commit": "c8baf3ad344c59b3abd461ecc17fc16ec44d0f7b" },
   "lazy-events.nvim": { "branch": "main", "commit": "63802b7ddc852bdfa29e33b158d52429276fa742" },
   "lazy.nvim": { "branch": "main", "commit": "6c3bda4aca61a13a9c63f1c1d1b16b9d3be90d7a" },

nvim/.config/nvim/lua/plugins/git.lua

@@ -104,8 +104,20 @@ return {
 			{ "nvim-tree/nvim-web-devicons", optional = true },
 		},
 		cmd = { "DiffEditor" },
-		config = function()
+		-- config = function()
-			require("hunk").setup()
+		-- 	require("hunk").setup()
-		end,
+		-- end,
+		opts = {
+			keys = {
+				global = {
+					quit = { "<leader>q" },
+				},
+				diff = { -- default to toggling line on both sides of diff with a
+					toggle_line = { "s" }, -- imagine it is '[s]ingle side'
+					toggle_line_pair = { "a" },
+				},
+			},
+		},
 	},
+	{ "rafikdraoui/jj-diffconflicts", lazy = false },
 }

vcs/jj/config/jj/config.toml

@@ -13,6 +13,17 @@ private-commits = "description(glob-i:'WIP:*') | description(glob-i:'PRIVATE:*')
 [ui]
 default-command = ["log", "-T", "builtin_log_oneline", "-r", "stack()"]
 diff-editor = ["nvim", "-c", "DiffEditor $left $right $output"]
+diff-instructions = false # don't add the JJ-INSTRUCTIONS file to diffs
+merge-editor = "dc"
+
+[merge-tools.dc] # the 'diffconflicts' plugin for nvim
+program = "nvim"
+merge-args = [
+    "-c", "let g:jj_diffconflicts_marker_length=$marker_length",
+    "-c", "let g:jj_diffconflicts_turn_off_instructions=1",
+    "-c", "JJDiffConflicts!", "$output", "$base", "$left", "$right"
+]
+merge-tool-edits-conflict-markers = true
 
 # use delta as formatter but _only_ for diff and show
 # see: https://github.com/jj-vcs/jj/discussions/4690#discussioncomment-12388965