git:20260710.2925510 to git:20260710.62afd0f
20 added, 15 removed. Audit B to A.
---
- title: "Apply structural codemods across large codebases with Comby"
+ name: "Apply structural codemods across large codebases with Comby"
+ slug: "apply-structural-codemods-across-large-codebases-with-comby"
description: "Rewrite recurring code patterns with syntax-aware matching so agents can run migration codemods more safely than plain regex search and replace."
+ github_stars: 2626
verification: "security_reviewed"
source: "https://github.com/comby-tools/comby"
author: "comby-tools"
publisher_type: "organization"
- category:
- - "Developer Tools"
- framework:
- - "Multi-Framework"
+ category: "Developer Tools"
+ framework: "Multi-Framework"
tool_ecosystem:
github_repo: "comby-tools/comby"
github_stars: 2626
---
# Apply structural codemods across large codebases with Comby
Rewrite recurring code patterns with syntax-aware matching so agents can run migration codemods more safely than plain regex search and replace.
## Prerequisites
Comby CLI
## Installation
- Choose whichever fits your setup:
+ Use the upstream install or setup path that matches your environment:
+ - docker run -a stdin -a stdout -a stderr -i comby/comby '(:[emoji] hi)' 'bye :[emoji]' lisp -stdin <<< '(👋 hi)'
+ - git clone https://github.com/comby-tools/comby
+ - make
+ - make test
- 1. Copy this skill folder into your local skills directory.
- 2. Clone the repo and symlink or copy the skill into your agent workspace.
- 3. Add the repo as a git submodule if you manage shared skills centrally.
- 4. Install it through your internal provisioning or packaging workflow.
- 5. Download the folder directly from GitHub and place it in your skills collection.
+ Requirements and caveats from upstream:
+ - ### Docker
+ - docker pull comby/comby
+ - <summary>click to expand an example invocation for the docker image</summary>
- Install command or upstream instructions:
+ Basic usage or getting-started notes:
+ - ### See the [usage documentation](https://comby.dev).
+ - [A short example below](https://github.com/comby-tools/comby#isnt-a-regex-approach-like-sed-good-enough) shows how comby simplifies matching and rewriting compared to regex approaches like sed.
+ - ### Mac OS X
- ```
- Install Comby from the release binaries or package manager for your platform, then run a match and rewrite pair such as `comby 'old(:[x])' 'new(:[x])' -matcher .python -i`.
- ```
+ - Source: https://github.com/comby-tools/comby
+ - Extracted from upstream docs: https://raw.githubusercontent.com/comby-tools/comby/HEAD/README.md
## Documentation
- https://comby.dev/
## Source
- [Agent Skill Exchange](https://agentskillexchange.com/skills/apply-structural-codemods-across-large-codebases-with-comby/)