From 084df08d4e34dd1416d7e575663e092e5f8ec095 Mon Sep 17 00:00:00 2001
From: Charles Teague <cteague@gmail.com>
Date: Wed, 10 Jan 2024 08:45:02 -0500
Subject: [PATCH] Add rust comments to list of support languages

---
 src/core/jupyter/jupyter.ts                 | 1 +
 src/core/lib/partition-cell-options.ts      | 1 +
 src/resources/filters/modules/constants.lua | 3 ++-
 src/resources/rmd/hooks.R                   | 3 ++-
 4 files changed, 6 insertions(+), 2 deletions(-)

diff --git a/src/core/jupyter/jupyter.ts b/src/core/jupyter/jupyter.ts
index 5acc4094fc..0a23db08a0 100644
--- a/src/core/jupyter/jupyter.ts
+++ b/src/core/jupyter/jupyter.ts
@@ -1175,6 +1175,7 @@ const kLangCommentChars: Record<string, string | string[]> = {
   mermaid: "%%",
   apl: "⍝",
   ocaml: ["(*", "*)"],
+  rust: "//",
 };
 
 function cleanJupyterOutputDisplayData(
diff --git a/src/core/lib/partition-cell-options.ts b/src/core/lib/partition-cell-options.ts
index 59795f894a..c066fe57a0 100644
--- a/src/core/lib/partition-cell-options.ts
+++ b/src/core/lib/partition-cell-options.ts
@@ -353,6 +353,7 @@ export const kLangCommentChars: Record<string, string | [string, string]> = {
   ojs: "//",
   apl: "⍝",
   ocaml: ["(*", "*)"],
+  rust: "//",
 };
 
 function escapeRegExp(str: string) {
diff --git a/src/resources/filters/modules/constants.lua b/src/resources/filters/modules/constants.lua
index d4953fbf74..e1702c270c 100644
--- a/src/resources/filters/modules/constants.lua
+++ b/src/resources/filters/modules/constants.lua
@@ -125,7 +125,8 @@ local kLangCommentChars = {
   markdown = {"<!--", "-->"},
   gap = { "#" },
   dockerfile = { "#" },
-  ocaml = { "(*", "*)"}
+  ocaml = { "(*", "*)"},
+  rust = { "// "}
 }
 local kDefaultCodeAnnotationComment =  {"#"}
 
diff --git a/src/resources/rmd/hooks.R b/src/resources/rmd/hooks.R
index ab6bad4aed..6982d47280 100644
--- a/src/resources/rmd/hooks.R
+++ b/src/resources/rmd/hooks.R
@@ -956,7 +956,8 @@ engine_comment_chars <- function(engine) {
     haskell = "--",
     dot = "//",
     apl = "\u235D",
-    ocaml = c("(*", "*)")
+    ocaml = c("(*", "*)"),
+    rust = "//"
   )
   comment_chars[[engine]] %||% "#"
 }