fix

book/node_modules/highlight.js/es/languages/properties.js

@@ -0,0 +1,68 @@
+/*
+Language: .properties
+Contributors: Valentin Aitken <valentin@nalisbg.com>, Egor Rogov <e.rogov@postgrespro.ru>
+Website: https://en.wikipedia.org/wiki/.properties
+Category: config
+*/
+
+/** @type LanguageFn */
+function properties(hljs) {
+  // whitespaces: space, tab, formfeed
+  const WS0 = '[ \\t\\f]*';
+  const WS1 = '[ \\t\\f]+';
+  // delimiter
+  const EQUAL_DELIM = WS0 + '[:=]' + WS0;
+  const WS_DELIM = WS1;
+  const DELIM = '(' + EQUAL_DELIM + '|' + WS_DELIM + ')';
+  const KEY = '([^\\\\:= \\t\\f\\n]|\\\\.)+';
+
+  const DELIM_AND_VALUE = {
+    // skip DELIM
+    end: DELIM,
+    relevance: 0,
+    starts: {
+      // value: everything until end of line (again, taking into account backslashes)
+      className: 'string',
+      end: /$/,
+      relevance: 0,
+      contains: [
+        { begin: '\\\\\\\\' },
+        { begin: '\\\\\\n' }
+      ]
+    }
+  };
+
+  return {
+    name: '.properties',
+    disableAutodetect: true,
+    case_insensitive: true,
+    illegal: /\S/,
+    contains: [
+      hljs.COMMENT('^\\s*[!#]', '$'),
+      // key: everything until whitespace or = or : (taking into account backslashes)
+      // case of a key-value pair
+      {
+        returnBegin: true,
+        variants: [
+          { begin: KEY + EQUAL_DELIM },
+          { begin: KEY + WS_DELIM }
+        ],
+        contains: [
+          {
+            className: 'attr',
+            begin: KEY,
+            endsParent: true
+          }
+        ],
+        starts: DELIM_AND_VALUE
+      },
+      // case of an empty key
+      {
+        className: 'attr',
+        begin: KEY + WS0 + '$'
+      }
+    ]
+  };
+}
+
+export { properties as default };