Support Component.pin shorthand for symbol-nested ports

lib/components/base-components/PrimitiveComponent/PrimitiveComponent.ts

@@ -896,6 +896,8 @@ export abstract class PrimitiveComponent<
   doInitialOptimizeSelectorCache() {
     if (!this.isSubcircuit) return
     const ports = this.selectAll("port")
+    const isValidShorthandName = (name: string) =>
+      /^[A-Za-z_][A-Za-z0-9_-]*$/.test(name)
 
     for (const port of ports) {
       // For ports inside primitive containers (like Symbol), use getParentNormalComponent
@@ -910,6 +912,12 @@ export abstract class PrimitiveComponent<
             `.${parentAlias} > .${portAlias}`,
             `.${parentAlias} .${portAlias}`,
           ]
+          if (
+            isValidShorthandName(parentAlias) &&
+            isValidShorthandName(portAlias)
+          ) {
+            selectors.push(`${parentAlias}.${portAlias}`)
+          }
           for (const selector of selectors) {
             const ar = this._cachedSelectAllQueries.get(selector)
             if (ar) {

tests/components/base-components/shorthand-selector.test.tsx

@@ -44,3 +44,50 @@ test("shorthand selector errors use original selector", () => {
     'Could not find port for selector "R1.3". Component "R1" found, but does not have pin "3". It has [pin1, anode, pos, left, 1, pin2, cathode, neg, right, 2]',
   )
 })
+
+test("shorthand selectors resolve ports nested in custom symbol", async () => {
+  const { circuit } = getTestFixture()
+
+  const GenericSymbol = () => (
+    <symbol name="GenericSymbol" width={4} height={4}>
+      <port
+        name="1"
+        pinNumber={1}
+        direction="right"
+        schStemLength={0.5}
+        schX={2}
+        schY={0}
+      />
+    </symbol>
+  )
+
+  circuit.add(
+    <board width="10mm" height="10mm">
+      <chip
+        name="U1"
+        symbol={<GenericSymbol />}
+        footprint={
+          <footprint>
+            <platedhole
+              portHints={["1"]}
+              pcbX="0mm"
+              pcbY="0mm"
+              outerDiameter="1.3mm"
+              holeDiameter="0.78mm"
+              shape="circle"
+            />
+          </footprint>
+        }
+      />
+      <trace from="U1.pin1" to="net.GND" />
+    </board>,
+  )
+
+  await circuit.renderUntilSettled()
+
+  const circuitJson = circuit.getCircuitJson()
+  const traceErrors = circuitJson.filter(
+    (c) => c.type === "source_trace_not_connected_error",
+  )
+  expect(traceErrors.length).toBe(0)
+})