Allow palette of any size, fix gitgnore

Author: p00f

.gitignore

@@ -1 +1 @@
-lua/colors/colors.lua
+lua/rainbow/colors.lua

lua/rainbow/internal.lua

@@ -2,36 +2,38 @@ local queries = require "nvim-treesitter.query"
 local nsid = vim.api.nvim_create_namespace("rainbow_ns")
 local colors = require "rainbow.colors"
 
-local function color_no(mynode)
+local function color_no(mynode, len)
   local counter = 0
   local current = mynode
   while current:parent() ~= nil do
     counter = counter + 1
     current = current:parent()
   end
-  if (counter % 7 == 0) then
-    return 7
+  if (counter % len == 0) then
+    return len
   else
-    return (counter % 7)
+    return (counter % len)
   end
 end
 
 local callbackfn = function(bufnr)
   local matches = queries.get_capture_matches(bufnr, "@punctuation.bracket", "highlights")
   for _, node in ipairs(matches) do
     -- set colour for this nesting level
-    if (node ~= nil and node.node ~= nil) then
-      local color_no_ = color_no(node.node)
-      local _, _, endRow, endCol = node.node:range() -- range of the capture, zero-indexed
-      vim.highlight.range(
-        bufnr,
-        nsid,
-        ("rainbowcol" .. color_no_),
-        {endRow, endCol - 1},
-        {endRow, endCol - 1},
-        "blockwise",
-        true
-      )
+    if node ~= nil then
+      if node.node ~= nil then
+        local color_no_ = color_no(node.node, #colors)
+        local _, _, endRow, endCol = node.node:range() -- range of the capture, zero-indexed
+        vim.highlight.range(
+          bufnr,
+          nsid,
+          ("rainbowcol" .. color_no_),
+          {endRow, endCol - 1},
+          {endRow, endCol - 1},
+          "blockwise",
+          true
+        )
+      end
     end
   end
 end
@@ -69,12 +71,13 @@ function M.detach(bufnr)
   vim.api.nvim_buf_attach(
     bufnr,
     false,
-    {on_lines = function() return true end}
+    {on_lines = function()
+        return true
+      end}
   )
   require "nvim-treesitter.highlight"
   local hlmap = vim.treesitter.highlighter.hl_map
   hlmap["punctuation.bracket"] = "TSPunctBracket"
---  vim.cmd[[highlight link TSPunctBracket Delimiter]]
 end
 
 return M