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Writing patches

Glossary

APK: the file an Android app is installed from. Apps from stores often come as split APKs, or bundled as an APKM or XAPK file.

Bundle: a signed .reseam file with patches and extensions. The unit you publish and users trust.

Code block: the { } after before, after, or replace, where you describe code to add to the app.

DEX: the bytecode format inside an APK.

Engine: the part of Reseam that applies a bundle to an APK. It runs in Reseam Manager, the CLI, and the browser patcher.

Extension: Kotlin code in a bundle that patches add to the app.

Gate: patched code that checks a setting while the app runs.

Internal patch: a patch with no name. It only runs as a dependency of another patch.

Obfuscation: renaming an app's classes and methods to short meaningless names. It changes with every release, which is why patches use targets.

Option: a value the user sets before patching.

patches.json: the index of a bundle's releases, download links, and public key. Users add it to Reseam Manager to get updates.

Point: one instruction inside a method.

Reference: a patch's full identifier, <bundle>/<id>.

Reseam Manager: the Reseam app for Android, Windows, and Linux.

Setting: a value the user can change inside the patched app: a toggle, text, a folder, or a choice.

Signer: the key a bundle is signed with. Users trust signers, not bundles.

Split APK: one part of an app that ships as several APK files.

Target: a description of a method, class, or field that Reseam searches the app for.

Universal patch: a patch with no compatibleWith. It works on any app and is selected by default only when its author calls enabledByDefault(true).

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