From 4d5726c76784b987b9c659ba82c4dd03ab515a4e Mon Sep 17 00:00:00 2001
From: Josh Goebel <me@joshgoebel.com>
Date: Sat, 31 Oct 2020 18:10:15 -0400
Subject: [PATCH 1/3] enh(parser) user negative look-ahead for beginKeywords

---
 src/lib/mode_compiler.js | 11 +++++------
 test/api/index.js        | 15 ++++++++-------
 2 files changed, 13 insertions(+), 13 deletions(-)

diff --git a/src/lib/mode_compiler.js b/src/lib/mode_compiler.js
index 5d1df3e6e4..bfa840e5a4 100644
--- a/src/lib/mode_compiler.js
+++ b/src/lib/mode_compiler.js
@@ -240,7 +240,7 @@ export function compileLanguage(language) {
 
   // TODO: We need negative look-behind support to do this properly
   /**
-   * Skip a match if it has a preceding or trailing dot
+   * Skip a match if it has a preceding dot
    *
    * This is used for `beginKeywords` to prevent matching expressions such as
    * `bob.keyword.do()`. The mode compiler automatically wires this up as a
@@ -248,10 +248,9 @@ export function compileLanguage(language) {
    * @param {RegExpMatchArray} match
    * @param {CallbackResponse} response
    */
-  function skipIfhasPrecedingOrTrailingDot(match, response) {
+  function skipIfhasPrecedingDot(match, response) {
     const before = match.input[match.index - 1];
-    const after = match.input[match.index + match[0].length];
-    if (before === "." || after === ".") {
+    if (before === ".") {
       response.ignoreMatch();
     }
   }
@@ -331,8 +330,8 @@ export function compileLanguage(language) {
         // or whitespace - this does no harm in any case since our keyword engine
         // doesn't allow spaces in keywords anyways and we still check for the boundary
         // first
-        mode.begin = '\\b(' + mode.beginKeywords.split(' ').join('|') + ')(?=\\b|\\s)';
-        mode.__beforeBegin = skipIfhasPrecedingOrTrailingDot;
+        mode.begin = '\\b(' + mode.beginKeywords.split(' ').join('|') + ')(?!\\.)(?=\\b|\\s)';
+        mode.__beforeBegin = skipIfhasPrecedingDot;
       }
       if (!mode.begin) mode.begin = /\B|\b/;
       cmode.beginRe = langRe(mode.begin);
diff --git a/test/api/index.js b/test/api/index.js
index 0e4b596dcb..223fbc0e30 100644
--- a/test/api/index.js
+++ b/test/api/index.js
@@ -1,16 +1,17 @@
 'use strict';
 
 describe('hljs', function() {
-  require('./ident');
-  require('./underscoreIdent');
-  require('./number');
-  require('./cNumber');
+  require('./autoDetection');
+  require('./beginKeywords');
   require('./binaryNumber');
-  require('./starters');
+  require('./cNumber');
+  require('./fixmarkup');
   require('./getLanguage');
-  require('./autoDetection');
   require('./highlight');
-  require('./fixmarkup');
+  require('./ident');
   require('./keywords');
+  require('./number');
   require('./registerAlias');
+  require('./starters');
+  require('./underscoreIdent');
 });

From 84b2b6c412118371facad5c50cf011c17a25cca4 Mon Sep 17 00:00:00 2001
From: Josh Goebel <me@joshgoebel.com>
Date: Sat, 31 Oct 2020 18:12:40 -0400
Subject: [PATCH 2/3] add changelog

---
 CHANGES.md | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/CHANGES.md b/CHANGES.md
index b713560245..b42f8812f9 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -1,5 +1,9 @@
 ## Version 10.4.0 (work in process)
 
+Parser:
+
+- enh(parser) use negative look-ahead for `beginKeywords` support (#2813) [Josh Goebel][]
+
 Language Improvements:
 
 - enh(julia) Update keyword lists for Julia 1.x (#2781) [Fredrik Ekre][]

From 62459f51fc0656f32f0076d9d921dff3a0487b52 Mon Sep 17 00:00:00 2001
From: Josh Goebel <me@joshgoebel.com>
Date: Mon, 2 Nov 2020 16:33:00 -0500
Subject: [PATCH 3/3] Update CHANGES.md

---
 CHANGES.md | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/CHANGES.md b/CHANGES.md
index b42f8812f9..3a64cccf39 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -1,4 +1,4 @@
-## Version 10.4.0 (work in process)
+## Version 10.4.0 (a work in process)
 
 Parser: