fix(treesitter): don't throw an error for missing injected langs

1 files changed, 14 insertions, 2 deletions

diff --git a/runtime/lua/vim/treesitter/language.lua b/runtime/lua/vim/treesitter/language.lua
index a7e36a0b89..d60cd2d0c7 100644
--- a/runtime/lua/vim/treesitter/language.lua
+++ b/runtime/lua/vim/treesitter/language.lua
@@ -8,7 +8,8 @@ local M = {}
 --
 -- @param lang The language the parser should parse
 -- @param path Optionnal path the parser is located at
-function M.require_language(lang, path)
+-- @param silent Don't throw an error if language not found
+function M.require_language(lang, path, silent)
   if vim._ts_has_language(lang) then
     return true
   end
@@ -16,12 +17,23 @@ function M.require_language(lang, path)
     local fname = 'parser/' .. lang .. '.*'
     local paths = a.nvim_get_runtime_file(fname, false)
     if #paths == 0 then
+      if silent then
+        return false
+      end
+
       -- TODO(bfredl): help tag?
       error("no parser for '"..lang.."' language, see :help treesitter-parsers")
     end
     path = paths[1]
   end
-  vim._ts_add_language(path, lang)
+
+  if silent then
+    return pcall(function() vim._ts_add_language(path, lang) end)
+  else
+    vim._ts_add_language(path, lang)
+  end
+
+  return true
 end
 
 --- Inspects the provided language.