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lua/core/folding.lua

@@ -14,16 +14,20 @@ local function parse_line(linenr)
     return nil
   end
 
+  -- get a parser TODO: remove the pcall once nvim 0.12 hits and the function no
+  --                    longer raises an error
   local ok, parser = pcall(vim.treesitter.get_parser, bufnr)
-  if not ok then
+  if not ok or not parser then
     return nil
   end
 
+  -- get a query from the parser
   local query = vim.treesitter.query.get(parser:lang(), "highlights")
   if not query then
     return nil
   end
 
+  -- parse the current line
   local tree = parser:parse({ linenr - 1, linenr })[1]
   local result = {}
   local line_pos = 0