bug#69952: [PATCH] Support pdumping compiled queries by dumping their source

[Eli Zaretskii]

> Date: Sat, 23 Mar 2024 03:27:18 +0000
> From: Sergey Vinokurov <serg.foo@gmail.com>
> 
> This patch aims to allow more things to be dumped. In particular, 
> compiled treesitter queries can be easily dumped by storing their source 
> so that they will be recompiled on load.
> 
> I noticed that in my config compiled quires are created somewhere which 
> prevents me dumping with standard Emacs build. But with this patch I can 
> dump successfully and not bother finding out who produced the queries.
> 
> It seems like there should be no drawbacks in allowing more things to be 
> dumped, please correct me if I'm wrong.

Thanks.  I added Daniel and Yuan to the discussion, in case they have
comments.

And I have a question: what happens if the pdumper file dumped with
tree-sitter available is loaded by an Emacs session in which
tree-sitter is not available?  That can happen on Windows, for
example, if the tree-sitter library or the grammar library required
for recomputing the query is not available.  I think we need some code
to prevent Emacs from crashing on startup in that case.