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From: | Daniel Colascione |
Subject: | Re: cc-mode fontification feels random |
Date: | Fri, 11 Jun 2021 13:37:53 -0700 |
User-agent: | Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.8.1 |
On 6/11/21 1:27 PM, Stefan Monnier wrote:
For what I know about tree-sitter it does not provide the parsers with the library.Of course, not, how could it? There's a never-ending stream of programming languages out there. I don't see why you think that's a problem,
It's not just licensing.Another problem with stock tree-sitter is that it makes Emacs less self-hosting. Tree-sitter grammars are written in JavaScript. You don't need JavaScript to use a grammar, but you do need JavaScript to customize a grammar. In addition, Tree-sitter compiles these JavaScript grammars to C. To use a customized grammar, an Emacs user would have to run node.js (or equally capable JS environment), generate C code, compile that C code, and load it into Emacs as a module. That's a big departure from the traditional approach to Emacs customization.
These technical choices on the part of the Tree-sitter people are unfortunate. I'd prefer an elisp reimplementation of the Tree-sitter algorithms, but I doubt we're going to get that any time soon.
Maybe Tree-sitter could be changed to generate an elisp parser and compile parsers in a lightweight JS environment like Duktape.
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