centered manpage viewer

1 files changed, 24 insertions, 0 deletions

diff --git a/nvim/lua/config/man.lua b/nvim/lua/config/man.lua
new file mode 100644
index 0000000..0c0357c
--- /dev/null
+++ b/nvim/lua/config/man.lua
@@ -0,0 +1,24 @@
+vim.api.nvim_create_autocmd({ "FileType", "VimResized" }, {
+  pattern = "man",
+  callback = function()
+    -- Read MANWIDTH from environment or fallback to 80 if not set
+    local manwidth_env = os.getenv("MANWIDTH")
+    local target_width = tonumber(manwidth_env) or 80
+
+    -- Calculate padding to center the text
+    local win_width = vim.api.nvim_win_get_width(0)
+    local padding = math.max(0, math.floor((win_width - target_width) / 2))
+	local nu_offset = vim.wo.numberwidth or 0
+	local final_padding = math.max(0, padding - nu_offset)
+
+	vim.opt_local.statuscolumn = string.rep(" ", final_padding) .. "%=%{v:lnum} "
+
+	-- disable wrapping only for centered view
+	if final_padding > 0 then
+		vim.opt_local.wrap = false
+	else
+		vim.opt_local.wrap = true
+	end
+  end,
+})
+