From 3677db515029c5be1a0953a2ace08336ad267789 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Gr=C3=A9goire=20Paris?= <postmaster@greg0ire.fr>
Date: Wed, 19 Jul 2023 22:31:02 +0200
Subject: [PATCH] Check if indented line is blank

Definition list are composed by a term and a definition block. The term
and the definition block may not be separated by a blank line. Lines
with only whitespace are considered blank.
---
 lib/Parser/DocumentParser.php                          |  2 +-
 .../tests/render/definition-list/definition-list.html  | 10 ++++++++++
 .../tests/render/definition-list/definition-list.rst   |  8 ++++++++
 3 files changed, 19 insertions(+), 1 deletion(-)

diff --git a/lib/Parser/DocumentParser.php b/lib/Parser/DocumentParser.php
index 459df2e6..342c97c9 100644
--- a/lib/Parser/DocumentParser.php
+++ b/lib/Parser/DocumentParser.php
@@ -309,7 +309,7 @@ private function parseLine(string $line): bool
                         return true;
                     }
 
-                    if ($this->lineChecker->isIndented($this->lines->getNextLine())) {
+                    if (trim($this->lines->getNextLine()) !== '' && $this->lineChecker->isIndented($this->lines->getNextLine())) {
                         $this->setState(State::DEFINITION_LIST);
                         $this->buffer->push($line);
 
diff --git a/tests/Functional/tests/render/definition-list/definition-list.html b/tests/Functional/tests/render/definition-list/definition-list.html
index d88e1e30..25f21426 100644
--- a/tests/Functional/tests/render/definition-list/definition-list.html
+++ b/tests/Functional/tests/render/definition-list/definition-list.html
@@ -94,3 +94,13 @@ <h1>
         </dd>
     </dl>
 </div>
+<div class="section" id="not-a-definition-list">
+    <h1>
+        Not a definition list
+    </h1>
+    <p>Single line followed by a blank line</p>
+    <blockquote>
+        <p>This line is indented, but because of the blank line, it should
+not be considered a term. It is a blockquote.</p>
+    </blockquote>
+</div>
diff --git a/tests/Functional/tests/render/definition-list/definition-list.rst b/tests/Functional/tests/render/definition-list/definition-list.rst
index 0635e7d1..95ae9e20 100644
--- a/tests/Functional/tests/render/definition-list/definition-list.rst
+++ b/tests/Functional/tests/render/definition-list/definition-list.rst
@@ -84,3 +84,11 @@ term 1
     .. note::
 
         directive in definition list
+
+Not a definition list
+=====================
+
+Single line followed by a blank line
+  
+    This line is indented, but because of the blank line, it should
+    not be considered a term. It is a blockquote.