Function: treesit-language-available-p

treesit-language-available-p is a function defined in treesit.c.

Signature

(treesit-language-available-p LANGUAGE &optional DETAIL)

Documentation

Return non-nil if LANGUAGE exists and is loadable.

If DETAIL is non-nil, return (t . nil) when LANGUAGE is available,
(nil . DATA) when unavailable. DATA is the signal data of
treesit-load-language-error.

View in manual

Source Code

// Defined in /usr/src/emacs/src/treesit.c
{
  CHECK_SYMBOL (language);
  treesit_initialize ();
  Lisp_Object signal_symbol = Qnil;
  Lisp_Object signal_data = Qnil;
  if (treesit_load_language (language, &signal_symbol, &signal_data) == NULL)
    {
      if (NILP (detail))
	return Qnil;
      else
	return Fcons (Qnil, signal_data);
    }
  else
    {
      if (NILP (detail))
	return Qt;
      else
	return Fcons (Qt, Qnil);
    }
}