From adb952cf7a6a4f00a2d3bb3e7515c299abbcabc7 Mon Sep 17 00:00:00 2001
From: atomiks <cc.glows@gmail.com>
Date: Tue, 23 Jan 2024 03:09:24 +1100
Subject: [PATCH] fix: rangeless multi chars highlighting

---
 src/index.ts                                   | 10 +++++++---
 test/fixtures/highlightedMultipleCharsRange.md | 10 ++++++++++
 2 files changed, 17 insertions(+), 3 deletions(-)

diff --git a/src/index.ts b/src/index.ts
index f024bc0..a234e84 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -383,10 +383,14 @@ export default function rehypePrettyCode(
               chars: string;
               charsIdAndOrRange: string;
             };
-            const [range, id] = charsIdAndOrRange.split('#');
             charsList.push(chars);
-            range && charsListNumbers.push(rangeParser(range));
-            id && charsListIdMap.set(chars, id);
+            if (charsIdAndOrRange === '') {
+              charsListNumbers.push([]);
+            } else {
+              const [range, id] = charsIdAndOrRange.split('#');
+              range && charsListNumbers.push(rangeParser(range));
+              id && charsListIdMap.set(chars, id);
+            }
           });
         }
 
diff --git a/test/fixtures/highlightedMultipleCharsRange.md b/test/fixtures/highlightedMultipleCharsRange.md
index aa69644..2f7de97 100644
--- a/test/fixtures/highlightedMultipleCharsRange.md
+++ b/test/fixtures/highlightedMultipleCharsRange.md
@@ -9,3 +9,13 @@ const strLen = getStringLength('str');
 
 const anotherStrLen = getStringLength('anotherStr');
 ```
+
+/getStringLength/ /str/2,3
+
+```js /getStringLength/ /str/2,3
+const getStringLength = (str) => str.length;
+
+const strLen = getStringLength('str');
+
+const anotherStrLen = getStringLength('anotherStr');
+```