Home / cxcscmu / skilllearnbench · GitHub

java-patch-workflow SKILL.md skillA

java-patch-workflow from cxcscmu/skilllearnbench is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.

Install it, pinned

mdr add cxcscmu/skilllearnbench/java-patch-workflow@git:20260424.d50cf5a

Pins git:20260424.d50cf5a in mdr.lock. Pin the fingerprint instead.

Audit grade: A, 17 of 17 checks passed
Kind: SKILL.md skill
Repository: cxcscmu/skilllearnbench
Path: skills/b1-one-shot-claude-sonnet-4-6/fix-security-bug/java-patch-workflow/SKILL.md
Versions recorded: 1
Latest version: git:20260424.d50cf5a, committed Apr 24, 2026
Size: 2,429 bytes
Repository stars: 91
License: MIT

Workflow for creating and applying patches to Java projects - diff format, patch application, and Maven rebuilds for security fixes.

Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.

What the file says

# Java Patch Workflow

## Creating Unified Diff Patches

```bash
# Create a patch from changes to a specific file
diff -u original_file.java modified_file.java > my_fix.patch

# Create patch with context lines
diff -u -p original.java modified.java > fix.patch

# Apply a patch
patch -p1 < fix.patch           # Strip 1 prefix component
patch -p0 < fix.patch           # Don't strip (exact path match)
patch --dry-run -p1 < fix.patch # Test without applying
```

## Git-Based Patching

```bash
# Create patch from staged changes
git diff HEAD > my_fix.patch

# Create patch from specific commit
git format-patch HEAD~1

# Apply git format-patch
git am patch_file.patch

# Apply unified diff
git apply patch_file.patch
git apply --check patch_file.patch  # Dry run
```

## Apache Druid Build

### Full Build (skip web-console for OOM prevention)
```bash
cd /root/druid
mvn clean package -DskipTests \
  -Dcheckstyle.skip=true -Dpmd.skip=true \
  -Dforbiddenapis.skip=true -Dspotbugs.skip=true \
  -Danimal.sniffer.skip=true -Denforcer.skip=true \
  -Djacoco.skip=true -Ddependency-check.skip=true \
  -pl '!web-console' -pl indexing-service -am
```

### Module-Specific Build
```bash
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint

mdr add cxcscmu/skilllearnbench/java-patch-workflow@sha256:8f2888fa186e6c94

The line at the top of this page pins the label git:20260424.d50cf5a, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.

Badge

[![mdr](https://markdownregistry.com/badge/art_j2n4jatgloie5zc4.svg)](https://markdownregistry.com/a/art_j2n4jatgloie5zc4)

1 badge image fetches in 30 days. What the badge shows.

Versions

The registry has recorded 1 version of this file, committed on Apr 24, 2026.

version	committed	commit	size	audit
git:20260424.d50cf5a latest	2026-04-24	d50cf5a	2,429 B	A	view

Audit of the latest version

A 17 of 17 checks passed. Fixed automatic checks with no AI involved, so the same checks give the same answer every run.

pass: Frontmatter block present
pass: Frontmatter declares a name
pass: Frontmatter declares a description
pass: Size between 200 bytes and 200 KB (2429 bytes)
pass: No zero-width or bidi control characters
pass: No instruction hidden inside an HTML comment
pass: No link to an exfiltration or paste host
pass: No credential-shaped string
pass: No instruction to send local credentials anywhere
pass: No text hidden with inline styles
pass: No prompt-injection phrasing
pass: No curl or wget piped into a shell
pass: No recursive delete of root, home or parent
pass: No instruction to read or print local credentials
pass: No base64 blob over 200 characters
pass: No link to a raw IP address
pass: No script tag

Source

GitHub

cxcscmu/skilllearnbench · 91 stars · license MIT · pushed 2026-10-02 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_j2n4jatgloie5zc4
GET https://markdownregistry.com/api/v1/resolve?ref=cxcscmu/skilllearnbench/java-patch-workflow
GET https://markdownregistry.com/api/v1/blob/8f2888fa186e6c944818e92faf2426ae668c61b2db5c0d40073f72e31c9556fa

Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.

Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.

More from cxcscmu/skilllearnbench

skill-creator SKILL.md skill

cxcscmu/skilllearnbench · baselines/b4-skill-creator/inject/skill-creator/SKILL.md · Create modular skill documents (SKILL.md files) for Claude Code. Use this skill whenever a task requires generating…