From 736174d470e188899d5c1911049c3fb7eee154dc Mon Sep 17 00:00:00 2001
From: Joscha <joscha@plugh.de>
Date: Tue, 22 Nov 2022 17:49:12 +0100
Subject: [PATCH] Desugar away named nil in table literals

---
 src/desugar/lit.rs | 14 ++++++++++++--
 1 file changed, 12 insertions(+), 2 deletions(-)

diff --git a/src/desugar/lit.rs b/src/desugar/lit.rs
index a514ef9..f5942b5 100644
--- a/src/desugar/lit.rs
+++ b/src/desugar/lit.rs
@@ -1,4 +1,4 @@
-use crate::ast::{Lit, TableLit, TableLitElem};
+use crate::ast::{Expr, Lit, TableLit, TableLitElem};
 
 impl TableLitElem {
     pub fn desugar(self) -> (Self, bool) {
@@ -32,7 +32,17 @@ impl TableLitElem {
 impl TableLit {
     pub fn desugar(self) -> (Self, bool) {
         let (elems, desugared) = self.0.desugar(|e| e.desugar());
-        (elems.table_lit(), desugared)
+        if desugared {
+            (elems.table_lit(), true)
+        } else {
+            let (elems, removed) = elems.remove_map(|e| match e {
+                TableLitElem::Named { value, .. } if matches!(*value, Expr::Lit(Lit::Nil(_))) => {
+                    Err(())
+                }
+                e => Ok(e),
+            });
+            (elems.table_lit(), !removed.is_empty())
+        }
     }
 }