[FEATURE]: Hash Editing

[dennisrutjes-1]

Feature hasn't been suggested before.

• I have verified this feature I'm about to request hasn't been suggested before.

Describe the enhancement you want to request

just have a look at this guy's idea and benchmark. Would be nice to have that option in opencode see how it is working? It's about giving hash identifiers to lines so edits will consume less tokens

https://blog.can.ac/2026/02/12/the-harness-problem/

[github-actions]

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This issue appears to be a duplicate of existing discussion:

• [FEATURE]: Add a new experimental "hashline" edit mode #13393: [FEATURE]: Add a new experimental "hashline" edit mode

Since the feature is already being tracked and assigned to maintainers, please continue the discussion there instead. You can add your support or additional feedback to #13393.

[izzzzzi]

Hey! This feature already exists as a plugin — opencode-hashline.

It annotates every line with a deterministic hash tag (#HL 5:a3f|code) so the AI can reference and edit code by hash instead of fragile string matching. Benchmarked at 100% correctness (60/60) on react-edit-benchmark vs 96.7% for standard str_replace.

Install: npm install opencode-hashline

Also submitted a PR to add it to the ecosystem page if you want to track that.