"for-loop macros" are no longer an experimental feature (#15288)

doc/manual_experimental.rst

@@ -1030,52 +1030,6 @@ but only the statement's selector expression is used to determine which
 macro to call.
 
 
-For loop macros
----------------
-
-A macro that takes as its only input parameter an expression of the special
-type ``system.ForLoopStmt`` can rewrite the entirety of a ``for`` loop:
-
-.. code-block:: nim
-    :test: "nim c $1"
-
-  import macros
-  {.experimental: "forLoopMacros".}
-
-  macro enumerate(x: ForLoopStmt): untyped =
-    expectKind x, nnkForStmt
-    # we strip off the first for loop variable and use
-    # it as an integer counter:
-    result = newStmtList()
-    result.add newVarStmt(x[0], newLit(0))
-    var body = x[^1]
-    if body.kind != nnkStmtList:
-      body = newTree(nnkStmtList, body)
-    body.add newCall(bindSym"inc", x[0])
-    var newFor = newTree(nnkForStmt)
-    for i in 1..x.len-3:
-      newFor.add x[i]
-    # transform enumerate(X) to 'X'
-    newFor.add x[^2][1]
-    newFor.add body
-    result.add newFor
-    # now wrap the whole macro in a block to create a new scope
-    result = quote do:
-      block: `result`
-
-  for a, b in enumerate(items([1, 2, 3])):
-    echo a, " ", b
-
-  # without wrapping the macro in a block, we'd need to choose different
-  # names for `a` and `b` here to avoid redefinition errors
-  for a, b in enumerate([1, 2, 3, 5]):
-    echo a, " ", b
-
-
-Currently for loop macros must be enabled explicitly
-via ``{.experimental: "forLoopMacros".}``.
-
-
 Term rewriting macros
 =====================