tree-sitter-cpp
difftastic
tree-sitter-cpp | difftastic | |
---|---|---|
8 | 68 | |
226 | 19,530 | |
2.2% | - | |
8.2 | 9.9 | |
16 days ago | 6 days ago | |
JavaScript | Rust | |
MIT License | MIT License |
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For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
tree-sitter-cpp
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Difftastic, a structural diff tool that understands syntax
Grammar page (https://github.com/tree-sitter/tree-sitter-cpp) reference two documents at the very end:
- Hyperlinked C++ BNF Grammar (https://alx71hub.github.io/hcb/)
- EBNF Syntax: C++ (ISO/IEC 14882:1998(E)) https://www.externsoft.ch/download/cpp-iso.html
The second doc has a year in the title, so it's ancient af.
- How to Get Started with Tree-Sitter
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Emacs and Java Development: Corfu + Cape + LSP-Mode + Treesit
(use-package treesit :ensure nil :custom ;; Some stuff taken from here: https://robbmann.io/posts/emacs-treesit-auto/ (treesit-extra-load-path '("/usr/lib64/")) (treesit-language-source-alist '((bash . ("https://github.com/tree-sitter/tree-sitter-bash")) (c . ("https://github.com/tree-sitter/tree-sitter-c")) (c++ . ("https://github.com/tree-sitter/tree-sitter-cpp")) (csharp . ("https://github.com/tree-sitter/tree-sitter-c-sharp")) (css . ("https://github.com/tree-sitter/tree-sitter-css")) (elixir ("https://github.com/elixir-lang/tree-sitter-elixir")) (html . ("https://github.com/tree-sitter/tree-sitter-html")) (java . ("https://github.com/tree-sitter/tree-sitter-java")) (javascript . ("https://github.com/tree-sitter/tree-sitter-javascript")) (json . ("https://github.com/tree-sitter/tree-sitter-json")) (lua . ("https://github.com/Azganoth/tree-sitter-lua")) (makefile . ("https://github.com/alemuller/tree-sitter-make")) (org . ("https://github.com/milisims/tree-sitter-org")) (python . ("https://github.com/tree-sitter/tree-sitter-python")) (tsx . ("https://github.com/tree-sitter/tree-sitter-typescript" "master" "tsx/src")) (typescript . ("https://github.com/tree-sitter/tree-sitter-typescript" "master" "typescript/src")) (ruby . ("https://github.com/tree-sitter/tree-sitter-ruby")) (rust . ("https://github.com/tree-sitter/tree-sitter-rust")) (sql . ("https://github.com/m-novikov/tree-sitter-sql")) (toml . ("https://github.com/tree-sitter/tree-sitter-toml")) (yaml . ("https://github.com/ikatyang/tree-sitter-yaml")))) (major-mode-remap-alist '((c-mode . c-ts-mode) (c++-mode . c++-ts-mode) (csharp-mode . csharp-ts-mode) (css-mode . css-ts-mode) (html-mode . html-ts-mode) (java-mode . java-ts-mode) (js-mode . js-ts-mode) (json-mode . json-ts-mode) (makefile-mode . makefile-ts-mode) ;; (org-mode . org-ts-mode) ;; not mature yet (python-mode . python-ts-mode) (typescript-mode . typescript-ts-mode) (ruby-mode . ruby-ts-mode) (rust-mode . rust-ts-mode) (toml-mode . toml-ts-mode) (yaml-mode . yaml-ts-mode))) (treesit-auto-fallback-alist '((toml-ts-mode . conf-toml-mode) (typescript-ts-mode . nil) (tsx-ts-mode . nil))) (treesit-font-lock-settings t) (treesit-simple-indent t) (treesit-defun-type-regexp t)) (use-package treesit-auto :demand t :config (setq treesit-auto-install t) (global-treesit-auto-mode))
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GitHub code search is generally available
The feature isn't working well yet on C and C++. If I recall correctly it's based on Tree-Sitter[1] parsing, and there are still too many bugs in corresponding grammars - tree-sitter-c[2] and tree-sitter-cpp[3]. Hopefully, it will be greatly improved in the future as the share of the existing and newly written code in C and C++ is quite significant.
[1] https://tree-sitter.github.io/tree-sitter/
[2] https://github.com/tree-sitter/tree-sitter-c/issues
[3] https://github.com/tree-sitter/tree-sitter-cpp/issues
- Building tree-sitter languages for Emacs
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Call for volunteers: add tree-sitter support to major modes
There's treesitter-cpp parser that works to some extent already. However, for complex language like c++, I think it would be better to use lsp's semantic highlighting instead
- Neovim C++ development
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Difftastic: A syntactic diff tool
C++ is currently unsupported, but there's a good tree-sitter implementation I can add: https://github.com/tree-sitter/tree-sitter-cpp
difftastic
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Linus Torvalds adds arbitrary tabs to kernel code
i want a diff tool that shows me exactly which tokens have changed, and which haven't, regardless of how they are laid out.
These already exist: https://github.com/Wilfred/difftastic
when we get that, then we should get even less merge conflicts.
Counterintuitively, that is not the case. AST-merge is a much, much, much, much, much harder problem than AST-diff.
https://github.com/Wilfred/difftastic?tab=readme-ov-file#can...
The fact that diffs can be used to drive a 3-way merge is in fact an accidental property that arises due to the sheer crudeness of the diff format. As soon as you start using more-sophisticated diff formats, solutions to "the diff problem" no longer lead directly to solutions to "the merge problem".
- FLaNK AI Weekly 25 March 2025
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Difftastic, a structural diff tool that understands syntax
Yes there is an `—-override` option you can use to specify the language in which a file should be parsed.
https://github.com/Wilfred/difftastic/blob/master/CHANGELOG....
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So You Think You Know Git – Git Tips and Tricks by Scott Chacon
Use the fantastic difftastic instead of git's diff. https://difftastic.wilfred.me.uk/
[alias]
- Difftastic: A structural diff tool that understands syntax
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SemanticDiff now supports Rust
difftastic provides similar capabilities in a free tool based on treesitter
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My programming language aware diff for VS Code and GitHub now supports Rust
difftastic? https://github.com/Wilfred/difftastic
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Prettier $20k Bounty was Claimed
If you're looking for a VS Code extension or a GitHub app, check out https://semanticdiff.com/. I'm a co-founder of this project.
If you prefer a CLI tool, check out https://github.com/Wilfred/difftastic. It supports more languages, but doesn't recognize when code has been replaced by an equivalent version ("invariances"). So it will show some changes (e.g. replacing a character in a string with an escape sequence) even though they are technically equivalent.
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Pijul: Version-Control Post-Git • Goto 2023
Shameless plug: I've written difftastic[1], a tool that builds ASTs and then does a structural diff of them. You can use it with git too.
It's an incredibly hard problem though, both from a computational complexity point of view, and trying to build a comprehensible UI once you've done the structural AST diff.
[1]: https://github.com/wilfred/difftastic
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Always leave a trailing comma in Python lists, dicts, tuples
There is a diff tool called difftastic: https://github.com/Wilfred/difftastic
The idea is that it does not show diff based on text change, but on syntastic meaning. For that, it uses tree-sitter.
I think it still shows the trailing comma in the situation as shown in the article, but it's quite different experience than the standard text based diff.
What are some alternatives?
nvim-cmp - A completion plugin for neovim coded in Lua.
delta - A syntax-highlighting pager for git, diff, and grep output
nvim-dap - Debug Adapter Protocol client implementation for Neovim
diffsitter - A tree-sitter based AST difftool to get meaningful semantic diffs
git-split-diffs - Syntax highlighted side-by-side diffs in your terminal
neogit - An interactive and powerful Git interface for Neovim, inspired by Magit
Visual Studio Code - Visual Studio Code
null-ls.nvim - Use Neovim as a language server to inject LSP diagnostics, code actions, and more via Lua.
gumtree - An awesome code differencing tool
nvim-treesitter - Nvim Treesitter configurations and abstraction layer