Syntax highlighting for git diff in prompt

[ruicsh]

hey, I have custom command that pulls a PR, and creates a prompt with the git diff (you can see it here)

But, syntax highlighting isn't being applied, :Inspect shows they are just markdownCodeBlock. I think this used to work applying the correct highlight groups, but I'm not sure.

Is there something I can do?

[deathbeam]

Do you have treesitter enabled and treesitter parsers for diff and gitcommit installed?

[deathbeam]

As it definitely works for me (also some spoilers maybe xd)

[ruicsh]

@@ -532,6 +532,23 @@ vim.api.nvim_create_autocmd("BufEnter", {
 			vim.opt_local.foldcolumn = "0" -- Don't show fold column
 			vim.opt_local.foldlevelstart = -1 -- Don't fold anything
 			vim.opt_local.conceallevel = 0 -- Don't conceal markdown links
+
+			-- Set filetype for proper syntax highlighting
+			vim.opt_local.filetype = "markdown"
+
+			-- Enable Treesitter highlighting if available
+			pcall(function()
+				require("nvim-treesitter.configs").setup({
+					highlight = { enable = true },
+				})
+				-- Check if the TSBufEnable command exists before trying to use it
+				if vim.fn.exists(":TSBufEnable") > 0 then
+					vim.cmd("TSBufEnable highlight")
+				else
+					-- Fallback method to enable treesitter highlighting
+					require("nvim-treesitter.configs").attach(0)
+				end
+			end)
 		end

this made it work for me. Should this be baked in CopilotChat or is it just specific to my setup?

[deathbeam]

Specific to your setup most likely as that is what the registration in plugin dir is solving. also isnt just the vim.opt_local.filetype = "markdown" enough there?

[ruicsh]

it's not enough to setup the filetype, I need to call the attach (not the setup). It's fixed for me, cheers

[ruicsh]

I figured it out. I need to make CopilotChat depend on nvim-treesitter/nvim-treesitter