From 4661b3b7b63c81434f39c295716e7b9c725be557 Mon Sep 17 00:00:00 2001
From: Mateus Craveiro <mccraveiro@gmail.com>
Date: Thu, 20 Dec 2018 04:51:40 -0200
Subject: [PATCH] Fix emphasis with underscore inside word

---
 lib/marked.js                            | 6 +++++-
 test/specs/commonmark/commonmark-spec.js | 2 +-
 2 files changed, 6 insertions(+), 2 deletions(-)

diff --git a/lib/marked.js b/lib/marked.js
index 57d234e2e2..578528975d 100644
--- a/lib/marked.js
+++ b/lib/marked.js
@@ -546,7 +546,7 @@ var inline = {
   code: /^(`+)([^`]|[^`][\s\S]*?[^`])\1(?!`)/,
   br: /^( {2,}|\\)\n(?!\s*$)/,
   del: noop,
-  text: /^(`+|[^`])[\s\S]*?(?=[\\<!\[`*]|\b_| {2,}\n|$)/
+  text: /^(`+|[^`])[\s\S]*?(?=[\\<!\[`*]|(?<=[\spunctuation])\b_| {2,}\n|$)/
 };
 
 // list of punctuation marks from common mark spec
@@ -584,6 +584,10 @@ inline.reflink = edit(inline.reflink)
   .replace('label', inline._label)
   .getRegex();
 
+inline.text = edit(inline.text)
+  .replace('punctuation', inline._punctuation)
+  .getRegex();
+
 /**
  * Normal Inline Grammar
  */
diff --git a/test/specs/commonmark/commonmark-spec.js b/test/specs/commonmark/commonmark-spec.js
index 4b342a4831..b42aa13283 100644
--- a/test/specs/commonmark/commonmark-spec.js
+++ b/test/specs/commonmark/commonmark-spec.js
@@ -337,7 +337,7 @@ describe('CommonMark 0.28 Emphasis and strong emphasis', function() {
   var section = 'Emphasis and strong emphasis';
 
   // var shouldPassButFails = [];
-  var shouldPassButFails = [334, 342, 348, 349, 352, 353, 360, 368, 369, 371, 372, 378, 380, 381, 382, 387, 388, 392, 393, 394, 395, 396, 402, 403, 409, 419, 420, 421, 422, 423, 424, 431, 432, 433, 434, 435, 436, 443, 444, 445, 448, 449, 453, 454, 455, 457, 458];
+  var shouldPassButFails = [334, 348, 349, 352, 353, 360, 369, 371, 372, 378, 380, 381, 382, 387, 388, 392, 393, 394, 395, 396, 402, 403, 409, 419, 420, 421, 422, 423, 424, 431, 432, 433, 434, 435, 436, 443, 444, 445, 448, 449, 453, 454, 455, 457, 458];
 
   var willNotBeAttemptedByCoreTeam = [];