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metagn 796aa78562 opensym as node kind + fixed experimental switch (#23892)
refs https://github.com/nim-lang/Nim/pull/23873#discussion_r1687995060,
fixes #23386, fixes #23385, supersedes #23572

Turns the `nfOpenSym` node flag implemented in #23091 and extended in
containing either `nkSym` or `nkOpenSymChoice`. Since this affects
macros working on generic proc AST, the node kind is now only generated
when the experimental switch `genericsOpenSym` is enabled, and a new
node flag `nfDisabledOpenSym` is set to the `nkSym` or `nkOpenSymChoice`
when the switch is not enabled so that we can give a warning.

Now that the experimental switch has more reasonable semantics, we
define `nimHasGenericsOpenSym2`.

(cherry picked from commit 0c890ff9a7)
2024-08-14 09:36:57 +02:00
..
2022-03-23 20:34:53 +01:00
2021-04-19 11:48:06 +02:00
2023-06-08 08:02:11 +02:00