From d1be7c51b2dfc4866cd295a43d98b3c2c8ab1bee Mon Sep 17 00:00:00 2001
From: Travis Vasceannie <travis.vas@gmail.com>
Date: Thu, 22 Jan 2026 23:08:31 +0000
Subject: [PATCH] morph

---
 opencode/oh-my-opencode.json | 14 +++---
 rule/morph-fast-apply.md     | 95 ++++++++++++++++++++++++++++++++++++
 2 files changed, 102 insertions(+), 7 deletions(-)
 create mode 100644 rule/morph-fast-apply.md

diff --git a/opencode/oh-my-opencode.json b/opencode/oh-my-opencode.json
index 3c43506..b8021b2 100644
--- a/opencode/oh-my-opencode.json
+++ b/opencode/oh-my-opencode.json
@@ -20,9 +20,6 @@
   },
   "background_task": {
     "defaultConcurrency": 6,
-    "instructions": [
-      "~/dev/oc-plugins/morph-fast-apply/MORPH_INSTRUCTIONS.md"
-    ],
     "modelConcurrency": {
       "anthropic/claude-opus-4-5": 2,
       "google/antigravity-gemini-3-pro-high": 2,
@@ -30,9 +27,6 @@
       "opencode/grok-code": 3,
       "zai-coding-plan/glm-4.7": 2
     },
-    "plugin": [
-      "~/dev/oc-plugins/morph-fast-apply"
-    ],
     "providerConcurrency": {
       "anthropic": 2,
       "google": 2,
@@ -40,5 +34,11 @@
       "opencode": 3,
       "zai-coding-plan": 2
     }
-  }
+  },
+  "instructions": [
+    "~/dev/oc-plugins/morph-fast-apply/MORPH_INSTRUCTIONS.md"
+  ],
+  "plugin": [
+    "~/dev/oc-plugins/morph-fast-apply"
+  ]
 }
\ No newline at end of file
diff --git a/rule/morph-fast-apply.md b/rule/morph-fast-apply.md
new file mode 100644
index 0000000..0c1ddcd
--- /dev/null
+++ b/rule/morph-fast-apply.md
@@ -0,0 +1,95 @@
+# Morph Fast Apply - Tool Selection Guide
+
+When editing code files, choose the appropriate tool based on the situation:
+
+## Tool Selection Matrix
+
+| Situation | Tool | Reason |
+|-----------|------|--------|
+| Small, exact string replacement | `edit` | Fast, precise, no API call |
+| Large file (500+ lines) | `morph_edit` | 10x faster, handles partial snippets |
+| Multiple scattered changes | `morph_edit` | Batch changes efficiently |
+| Complex refactoring | `morph_edit` | Better accuracy with context |
+| Whitespace-sensitive edits | `morph_edit` | Forgiving with formatting |
+| New file creation | `write` | Standard file creation |
+
+## Using morph_edit
+
+The `morph_edit` tool uses **lazy edit markers** to represent unchanged code:
+
+```javascript
+// ... existing code ...
+function updatedFunction() {
+  // New implementation
+  return "modified";
+}
+// ... existing code ...
+```
+
+### Parameters
+
+- `target_filepath`: Path to the file (relative to project root)
+- `instructions`: Brief description of changes (helps AI disambiguate)
+- `code_edit`: Code with `// ... existing code ...` markers
+
+### Rules
+
+1. **ALWAYS** use `// ... existing code ...` for unchanged sections
+2. Include **minimal context** around edits for precise location
+3. Preserve **exact indentation** in your code snippets
+4. For **deletions**: show context before/after, omit the deleted lines
+5. **Batch** multiple edits to the same file in one call
+
+### Examples
+
+**Adding a function:**
+```
+// ... existing code ...
+import { newDep } from './newDep';
+// ... existing code ...
+
+function newFeature() {
+  return newDep.process();
+}
+// ... existing code ...
+```
+
+**Modifying existing code:**
+```
+// ... existing code ...
+function existingFunc(param) {
+  // Updated implementation
+  const result = param * 2; // Changed from * 1
+  return result;
+}
+// ... existing code ...
+```
+
+**Deleting code (show what remains):**
+```
+// ... existing code ...
+function keepThis() {
+  return "stays";
+}
+
+// The function between these two was removed
+
+function alsoKeepThis() {
+  return "also stays";
+}
+// ... existing code ...
+```
+
+## Fallback Behavior
+
+If Morph API fails (timeout, rate limit, etc.), the tool will:
+1. Return an error message with details
+2. Suggest using the native `edit` tool as fallback
+3. The native `edit` tool requires exact string matching
+
+## When NOT to Use morph_edit
+
+- Simple one-line changes (use `edit`)
+- New file creation (use `write`)
+- When you have the exact text to match (use `edit` for speed)
+- When Morph API is unavailable (fall back to `edit`)
\ No newline at end of file