From 8520336411b6cd8e96f6054faafddadfddc2be49 Mon Sep 17 00:00:00 2001
From: KJyang-0114 <kjyang011487@gmail.com>
Date: Tue, 3 Mar 2026 15:45:56 +0800
Subject: [PATCH] fix(bash): highlight command line flags/options

Add highlighting for command line flags like --option and -o in bash.
This fixes inconsistent highlighting where only some flags were
highlighted as built_in while others had no highlighting.

Fixes #4288
---
 src/languages/bash.js | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/src/languages/bash.js b/src/languages/bash.js
index 44f9beba97..e7e96b44b8 100644
--- a/src/languages/bash.js
+++ b/src/languages/bash.js
@@ -369,6 +369,12 @@ export default function(hljs) {
     "yes"
   ];
 
+  // Command line options/flags like --option or -o
+  const COMMAND_FLAGS = {
+    className: 'attr',
+    begin: /(?<=^|\s)(?:-{1,2}[a-zA-Z][a-zA-Z0-9_-]*|--[a-zA-Z][a-zA-Z0-9_-]+)(?=\s|$)/m
+  };
+
   return {
     name: 'Bash',
     aliases: [
@@ -401,7 +407,8 @@ export default function(hljs) {
       ESCAPED_QUOTE,
       APOS_STRING,
       ESCAPED_APOS,
-      VAR
+      VAR,
+      COMMAND_FLAGS
     ]
   };
 }