diff --git a/.vscode/launch.json b/.vscode/launch.json
index 377a06f25a..932257407b 100644
--- a/.vscode/launch.json
+++ b/.vscode/launch.json
@@ -17,7 +17,8 @@
         "--unstable-ffi",
         "--importmap=${workspaceFolder}/src/import_map.json",
         "--inspect-brk",
-        "--allow-all"
+        "--allow-all",
+        "--v8-flags=--enable-experimental-regexp-engine,--max-old-space-size=8192,--max-heap-size=8192"
       ],
       "env": {
         "QUARTO_BIN_PATH": "${workspaceFolder}/package/dist/bin",
@@ -43,7 +44,8 @@
         "--allow-all",
         "--check",
         "--importmap=${workspaceFolder}/src/import_map.json",
-        "--inspect-brk"
+        "--inspect-brk",
+        "--v8-flags=--enable-experimental-regexp-engine,--max-old-space-size=8192,--max-heap-size=8192"
       ],
       "env": {
         "QUARTO_ROOT": "${workspaceFolder}",
diff --git a/package/launcher/src/main.rs b/package/launcher/src/main.rs
index 3bb8f87a1b..8540ef3d34 100644
--- a/package/launcher/src/main.rs
+++ b/package/launcher/src/main.rs
@@ -93,11 +93,15 @@ fn main() {
         String::from("--allow-ffi"),      
     ];
 
+    // # --enable-experimental-regexp-engine is required for /regex/l, https://github.com/quarto-dev/quarto-cli/issues/9737
+    if let Ok(v8_options) = env::var("QUARTO_DENO_V8_OPTIONS") {
+        deno_options.push(format!("{}{}", String::from("--v8-flags=--enable-experimental-regexp-engine,--max-old-space-size=8192,--max-heap-size=8192,"), String::from(v8_options)));
+    } else {
+        deno_options.push(String::from("--v8-flags=--enable-experimental-regexp-engine,--max-old-space-size=8192,--max-heap-size=8192"));
+    }
     // If there are extra args, include those
     if let Ok(extra_options) = env::var("QUARTO_DENO_EXTRA_OPTIONS") {
         deno_options.push(extra_options);
-    } else {
-        deno_options.push(String::from("--v8-flags=--max-old-space-size=8192,--max-heap-size=8192"));
     };
 
     // run deno
diff --git a/package/scripts/common/quarto b/package/scripts/common/quarto
index 4f16ff58af..75b2462635 100755
--- a/package/scripts/common/quarto
+++ b/package/scripts/common/quarto
@@ -169,8 +169,17 @@ export DENO_NO_UPDATE_CHECK=1
 # Be sure to include any already defined QUARTO_DENO_OPTIONS
 QUARTO_DENO_OPTIONS="--unstable-ffi --no-config ${QUARTO_CACHE_OPTIONS} --allow-read --allow-write --allow-run --allow-env --allow-net --allow-ffi ${QUARTO_DENO_OPTIONS}"
 
+# --enable-experimental-regexp-engine is required for /regex/l, https://github.com/quarto-dev/quarto-cli/issues/9737
+if [ "$QUARTO_DENO_V8_OPTIONS" != "" ]; then
+  QUARTO_DENO_V8_OPTIONS="--enable-experimental-regexp-engine,--max-old-space-size=8192,--max-heap-size=8192,${QUARTO_DENO_V8_OPTIONS}"
+else
+  QUARTO_DENO_V8_OPTIONS="--enable-experimental-regexp-engine,--max-old-space-size=8192,--max-heap-size=8192"
+fi
+
 if [ "$QUARTO_DENO_EXTRA_OPTIONS" == "" ]; then
-  QUARTO_DENO_EXTRA_OPTIONS="--v8-flags=--max-old-space-size=8192,--max-heap-size=8192"
+  QUARTO_DENO_EXTRA_OPTIONS="--v8-flags=${QUARTO_DENO_V8_OPTIONS}"
+else
+  QUARTO_DENO_EXTRA_OPTIONS="--v8-flags=${QUARTO_DENO_V8_OPTIONS} ${QUARTO_DENO_EXTRA_OPTIONS}"
 fi
 
 if [ "$QUARTO_TS_PROFILE" != "" ]; then
diff --git a/package/scripts/windows/quarto.cmd b/package/scripts/windows/quarto.cmd
index 76a12d8eae..eb71c965cd 100644
--- a/package/scripts/windows/quarto.cmd
+++ b/package/scripts/windows/quarto.cmd
@@ -98,8 +98,17 @@ SET "DENO_TLS_CA_STORE=system,mozilla"
 SET "DENO_NO_UPDATE_CHECK=1"
 SET "QUARTO_DENO_OPTIONS=--unstable-ffi --no-config --cached-only --allow-read --allow-write --allow-run --allow-env --allow-net --allow-ffi"
 
+REM --enable-experimental-regexp-engine is required for /regex/l, https://github.com/quarto-dev/quarto-cli/issues/9737
+IF DEFINED QUARTO_DENO_V8_OPTIONS (
+  SET "QUARTO_DENO_V8_OPTIONS=--enable-experimental-regexp-engine,--max-old-space-size=8192,--max-heap-size=8192,!QUARTO_DENO_V8_OPTIONS!"
+) ELSE (
+  SET "QUARTO_DENO_V8_OPTIONS=--enable-experimental-regexp-engine,--max-old-space-size=8192,--max-heap-size=8192"
+)
+
 IF NOT DEFINED QUARTO_DENO_EXTRA_OPTIONS (
-		set "QUARTO_DENO_EXTRA_OPTIONS=--v8-flags=--max-old-space-size=8192,--max-heap-size=8192"
+  SET "QUARTO_DENO_EXTRA_OPTIONS=--v8-flags=!QUARTO_DENO_V8_OPTIONS!"
+) ELSE (
+  SET "QUARTO_DENO_EXTRA_OPTIONS=--v8-flags=!QUARTO_DENO_V8_OPTIONS! !QUARTO_DENO_EXTRA_OPTIONS!"
 )
 
 !QUARTO_DENO! !QUARTO_ACTION! !QUARTO_DENO_OPTIONS! !QUARTO_DENO_EXTRA_OPTIONS! !QUARTO_IMPORT_MAP_ARG! !QUARTO_TARGET! %*
diff --git a/src/project/types/website/util/discover-meta.ts b/src/project/types/website/util/discover-meta.ts
index 42ca79f489..2b67059cfe 100644
--- a/src/project/types/website/util/discover-meta.ts
+++ b/src/project/types/website/util/discover-meta.ts
@@ -21,9 +21,9 @@ const kPreviewClassPattern =
 const kMdNamedImagePattern =
   `!\\[[^\\]]*\\]\\(${kNamedFilePattern}(?:\\".*\\")?\\)(?:\\{[^\\|]*\.*[\\s\\}]+)?`;
 
-const kNamedFileRegex = RegExp(kNamedFilePattern);
-const kMdPreviewClassRegex = RegExp(kPreviewClassPattern);
-const kMdNamedImageRegex = RegExp(kMdNamedImagePattern);
+const kNamedFileRegex = RegExp(kNamedFilePattern, "l");
+const kMdPreviewClassRegex = RegExp(kPreviewClassPattern, "l");
+const kMdNamedImageRegex = RegExp(kMdNamedImagePattern, "l");
 const kMarkdownImg = /!\[[^\]]*\]\((.*?)(?:\".*\")?\)(?:\{(?:[^\|]*)\})?/;
 
 export function findDescription(doc: Document): string | undefined {
diff --git a/tests/run-tests.ps1 b/tests/run-tests.ps1
index 902250b60a..02a703c426 100644
--- a/tests/run-tests.ps1
+++ b/tests/run-tests.ps1
@@ -56,7 +56,7 @@ $Env:QUARTO_DEBUG = "true"
 # Preparing running Deno with default arguments
 
 $QUARTO_IMPORT_MAP_ARG="--importmap=$(Join-Path $QUARTO_SRC_DIR "dev_import_map.json")"
-$QUARTO_DENO_OPTIONS="--config test-conf.json --unstable-ffi --allow-read --allow-write --allow-run --allow-env --allow-net --check"
+$QUARTO_DENO_OPTIONS="--config test-conf.json --v8-flags=--enable-experimental-regexp-engine,--max-old-space-size=8192,--max-heap-size=8192 --unstable-ffi --allow-read --allow-write --allow-run --allow-env --allow-net --check"
 
 # Parsing argument passed to the script
 
diff --git a/tests/run-tests.sh b/tests/run-tests.sh
index f7f17192b1..3edcb1a599 100755
--- a/tests/run-tests.sh
+++ b/tests/run-tests.sh
@@ -23,7 +23,7 @@ export QUARTO_BIN_PATH=$DENO_DIR
 export QUARTO_SHARE_PATH="`cd "$QUARTO_ROOT/src/resources/";pwd`"
 export QUARTO_DEBUG=true
 
-QUARTO_DENO_OPTIONS="--config test-conf.json --unstable-ffi --allow-read --allow-write --allow-run --allow-env --allow-net --check"
+QUARTO_DENO_OPTIONS="--config test-conf.json --v8-flags=--enable-experimental-regexp-engine,--max-old-space-size=8192,--max-heap-size=8192 --unstable-ffi --allow-read --allow-write --allow-run --allow-env --allow-net --check"
 
 
 if [[ -z $GITHUB_ACTION ]] && [[ -z $QUARTO_TESTS_NO_CONFIG ]]