From dc06395e73fd97072d58ed01a50c519224c6e235 Mon Sep 17 00:00:00 2001
From: Agus Zubiaga <agus@zed.dev>
Date: Fri, 8 May 2026 13:09:05 -0300
Subject: [PATCH] markdown: Bump mermaid-rs-renderer to fix flowchart parser
 panic (#56199)

Self-Review Checklist:

- [x] I've reviewed my own diff for quality, security, and reliability
- [x] Unsafe blocks (if any) have justifying comments
- [x] The content is consistent with the [UI/UX
checklist](https://github.com/zed-industries/zed/blob/main/CONTRIBUTING.md#uiux-checklist)
- [x] Tests cover the new/changed behavior
- [x] Performance impact has been considered and is acceptable

Bumps `mermaid-rs-renderer` to
`782b89a7da3f0e91e51f98d00a93acba679be6fb`, which picks up
[1jehuang/mermaid-rs-renderer#95](https://github.com/1jehuang/mermaid-rs-renderer/pull/95),
fixing a panic with partially typed mermaid.

Release Notes:

- Fixed a crash in markdown preview when a mermaid flowchart contained a
partially-typed parallelogram node like `A[/]` or `A[\]`.
---
 Cargo.lock | 51 +++++++++++++++------------------------------------
 Cargo.toml |  2 +-
 2 files changed, 16 insertions(+), 37 deletions(-)

diff --git a/Cargo.lock b/Cargo.lock
index ea52978db69d453ee8dc17ecf59af47c1780e154..a2b69092b00fcc9b335d260847093523430af136 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -3892,7 +3892,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "8c5c9868e64aa6c5410629a83450e142c80e721c727a5bc0fb18107af6c2d66b"
 dependencies = [
  "bitflags 2.10.0",
- "fontdb 0.23.0",
+ "fontdb",
  "harfrust",
  "linebender_resource_handle",
  "log",
@@ -6503,20 +6503,6 @@ dependencies = [
  "roxmltree",
 ]
 
-[[package]]
-name = "fontdb"
-version = "0.16.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b0299020c3ef3f60f526a4f64ab4a3d4ce116b1acbf24cdd22da0068e5d81dc3"
-dependencies = [
- "fontconfig-parser",
- "log",
- "memmap2",
- "slotmap",
- "tinyvec",
- "ttf-parser 0.20.0",
-]
-
 [[package]]
 name = "fontdb"
 version = "0.23.0"
@@ -6528,7 +6514,7 @@ dependencies = [
  "memmap2",
  "slotmap",
  "tinyvec",
- "ttf-parser 0.25.1",
+ "ttf-parser",
 ]
 
 [[package]]
@@ -7738,7 +7724,7 @@ dependencies = [
  "sum_tree",
  "taffy",
  "thiserror 2.0.17",
- "ttf-parser 0.25.1",
+ "ttf-parser",
  "unicode-segmentation",
  "url",
  "usvg",
@@ -8887,7 +8873,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "4b0f83760fb341a774ed326568e19f5a863af4a952def8c39f9ab92fd95b88e5"
 dependencies = [
  "equivalent",
- "hashbrown 0.16.1",
+ "hashbrown 0.15.5",
  "serde",
  "serde_core",
 ]
@@ -9257,13 +9243,12 @@ dependencies = [
 
 [[package]]
 name = "json5"
-version = "0.4.1"
+version = "1.3.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "96b0db21af676c1ce64250b5f40f3ce2cf27e4e47cb91ed91eb6fe9350b430c1"
+checksum = "733a844dbd6fef128e98cb4487b887cb55454d92cd9994b1bafe004fabbe670c"
 dependencies = [
- "pest",
- "pest_derive",
  "serde",
+ "ucd-trie",
 ]
 
 [[package]]
@@ -10685,18 +10670,18 @@ dependencies = [
 
 [[package]]
 name = "mermaid-rs-renderer"
-version = "0.2.0"
-source = "git+https://github.com/zed-industries/mermaid-rs-renderer?rev=374db9ead5426697c6c2111151d9f246899bc638#374db9ead5426697c6c2111151d9f246899bc638"
+version = "0.2.2"
+source = "git+https://github.com/zed-industries/mermaid-rs-renderer?rev=782b89a7da3f0e91e51f98d00a93acba679be6fb#782b89a7da3f0e91e51f98d00a93acba679be6fb"
 dependencies = [
  "anyhow",
- "fontdb 0.16.2",
+ "fontdb",
  "json5",
  "once_cell",
  "regex",
  "serde",
  "serde_json",
  "thiserror 2.0.17",
- "ttf-parser 0.20.0",
+ "ttf-parser",
 ]
 
 [[package]]
@@ -11778,9 +11763,9 @@ dependencies = [
 
 [[package]]
 name = "once_cell"
-version = "1.21.3"
+version = "1.21.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "42f5e15c9953c5e4ccceeb2e7382a716482c34515315f7b03532b8b4e8393d2d"
+checksum = "9f7c3e4beb33f85d45ae3e3a1792185706c8e16d043238c593331cc7cd313b50"
 
 [[package]]
 name = "once_cell_polyfill"
@@ -15451,7 +15436,7 @@ dependencies = [
  "core_maths",
  "log",
  "smallvec",
- "ttf-parser 0.25.1",
+ "ttf-parser",
  "unicode-bidi-mirroring",
  "unicode-ccc",
  "unicode-properties",
@@ -18952,12 +18937,6 @@ version = "0.2.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "e421abadd41a4225275504ea4d6566923418b7f05506fbc9c0fe86ba7396114b"
 
-[[package]]
-name = "ttf-parser"
-version = "0.20.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "17f77d76d837a7830fe1d4f12b7b4ba4192c1888001c7164257e4bc6d21d96b4"
-
 [[package]]
 name = "ttf-parser"
 version = "0.25.1"
@@ -19306,7 +19285,7 @@ dependencies = [
  "base64 0.22.1",
  "data-url",
  "flate2",
- "fontdb 0.23.0",
+ "fontdb",
  "imagesize",
  "kurbo",
  "log",
diff --git a/Cargo.toml b/Cargo.toml
index 47b8eddf1486e6a4fee67a62b2d608dca32337f5..6f172245491fedecdfa4e2f282d8e1b8006d3ee2 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -388,7 +388,7 @@ markdown_preview = { path = "crates/markdown_preview" }
 svg_preview = { path = "crates/svg_preview" }
 media = { path = "crates/media" }
 menu = { path = "crates/menu" }
-mermaid-rs-renderer = { git = "https://github.com/zed-industries/mermaid-rs-renderer", rev = "374db9ead5426697c6c2111151d9f246899bc638", default-features = false }
+mermaid-rs-renderer = { git = "https://github.com/zed-industries/mermaid-rs-renderer", rev = "782b89a7da3f0e91e51f98d00a93acba679be6fb", default-features = false }
 migrator = { path = "crates/migrator" }
 mistral = { path = "crates/mistral" }
 multi_buffer = { path = "crates/multi_buffer" }