fixes #24641; quote do captures no variables without backticks

compiler/semexprs.nim

@@ -2447,7 +2447,22 @@ proc semQuoteAst(c: PContext, n: PNode): PNode =
         dummyTemplate[paramsPos].add newTreeI(nkIdentDefs, n.info, ids[i], newNodeIT(nkType, n.info, typ), c.graph.emptyNode)
       else:
         dummyTemplate[paramsPos].add newTreeI(nkIdentDefs, n.info, ids[i], getSysSym(c.graph, n.info, "typed").newSymNode, c.graph.emptyNode)
+  # don't allow templates to capture syms without backticks
+  let oldScope = c.currentScope
+  # c.currentScope = PScope(parent: nil, symbols: initStrTable(), depthLevel: 0)
+  if c.p.owner.kind in routineKinds:
+    # skips the current routine scopes
+    block exitLabel:
+      while c.currentScope != nil:
+        c.currentScope = c.currentScope.parent
+        block continueLabel:
+          for s in items(c.currentScope.symbols):
+            if s.owner != c.p.owner:
+              break exitLabel
+            else:
+              break continueLabel
   var tmpl = semTemplateDef(c, dummyTemplate)
+  c.currentScope = oldScope
   quotes[0] = tmpl[namePos]
   # This adds a call to newIdentNode("result") as the first argument to the template call
   let identNodeSym = getCompilerProc(c.graph, "newIdentNode")

tests/lexer/tcustom_numeric_literals.nim

@@ -163,9 +163,9 @@ template main =
     doAssert fn3() == "[[-12]]"
 
     block: # bug 9 from https://github.com/nim-lang/Nim/pull/17020#issuecomment-803193947
+      func wrap1(a: string): string = "{" & a & "}"
+      func `'wrap3`(a: string): string = "{" & a & "}"
       macro metawrap(): untyped =
-        func wrap1(a: string): string = "{" & a & "}"
-        func `'wrap3`(a: string): string = "{" & a & "}"
         result = quote do:
           let a1 {.inject.} = wrap1"-128"
           let a2 {.inject.} = -128'wrap3

tests/stdlib/tmacros.nim

@@ -332,7 +332,7 @@ block:
   macro main =
     let x = 12
     result = quote do:
-      `hello`(12, type(x))
+      `hello`(12, type(`x`))
 
   main()