From f7bd03dd76533cda2d2626d6470d3bb55e03b012 Mon Sep 17 00:00:00 2001
From: Ian Wrzesinski <133046678+wrzian@users.noreply.github.com>
Date: Thu, 23 Jan 2025 07:27:38 -0500
Subject: [PATCH] Fix delimiter unparen syntax (#5739)

---
 crates/typst-syntax/src/parser.rs |   4 ++--
 tests/ref/math-lr-unparen.png     | Bin 0 -> 493 bytes
 tests/suite/math/delimited.typ    |   8 ++++++++
 3 files changed, 10 insertions(+), 2 deletions(-)
 create mode 100644 tests/ref/math-lr-unparen.png

diff --git a/crates/typst-syntax/src/parser.rs b/crates/typst-syntax/src/parser.rs
index a65e5ff6b..f9fb8b616 100644
--- a/crates/typst-syntax/src/parser.rs
+++ b/crates/typst-syntax/src/parser.rs
@@ -442,10 +442,10 @@ fn math_unparen(p: &mut Parser, m: Marker) {
         if first.text() == "(" && last.text() == ")" {
             first.convert_to_kind(SyntaxKind::LeftParen);
             last.convert_to_kind(SyntaxKind::RightParen);
+            // Only convert if we did have regular parens.
+            node.convert_to_kind(SyntaxKind::Math);
         }
     }
-
-    node.convert_to_kind(SyntaxKind::Math);
 }
 
 /// The unicode math class of a string. Only returns `Some` if `text` has
diff --git a/tests/ref/math-lr-unparen.png b/tests/ref/math-lr-unparen.png
new file mode 100644
index 0000000000000000000000000000000000000000..d418b14eaa978f7975cc8185ce6e25b52c7a5056
GIT binary patch
literal 493
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zKR|$C)Z$T#M=c(;nD!QbSmcRc!JkD=ziH!R6G94XevVo^#4R==q`>+IEiC>vD{<x*
zyej6VO?oj}fDA#4zwN{ZkX2w+@SS3df1Jh!kX2w+@RJ%r-IP#^;QY%;n2N4oYC_IG
z1g|!siAr%C^Aox7|MfE#T|w;6Ur4;)KVzt5aV$EYpn_40M=d7a;(Lj0Kv0>QupfuT
z9}}B_3aZl+)==5U9`ix0&-3GO`8c%!#QM3`o5~iyRK5vj@A!tp;%~Z#!0a=RsT{{U
zjeg>f<BO{AXp^`~^9dxb$$_-7_?O8S0;$^h0ZlC4w3UF5PtK!>kFQODRL{R~S^T^n
z(x3QBU5nqBL)c}1a9I4S2vS2ezon|h|01^>Ja}OJWP>bRL7lby;K75NX4q3XAAeW`
z1^01S{A&qR!Ij}uN!)xzz~a|8XkziNg9Lp1Zy#-Zd@}nVev404zoCi6pGqDR@Nvdt
z>RKGM{TPUPI~N?s`?g1;D~R3>4&*=6z!o3d9z-RJw=LR?#9O)OAi9Esi&i4>HZR&X
j+G!iLc+}!ii)je}qm_{qY}NN400000NkvXXu0mjf^L^=Q

literal 0
HcmV?d00001

diff --git a/tests/suite/math/delimited.typ b/tests/suite/math/delimited.typ
index 226740501..ca82427dd 100644
--- a/tests/suite/math/delimited.typ
+++ b/tests/suite/math/delimited.typ
@@ -125,3 +125,11 @@ $ lr(size: #3em, |)_a^b lr(size: #3em, zws|)_a^b
 --- issue-4188-lr-corner-brackets ---
 // Test positioning of U+231C to U+231F
 $⌜a⌟⌞b⌝$ = $⌜$$a$$⌟$$⌞$$b$$⌝$
+
+--- math-lr-unparen ---
+// Test that unparen with brackets stays as an LrElem.
+#let item = $limits(sum)_i$
+$
+  1 / ([item]) quad
+  1 /  [item]
+$