diff --git a/markdown.dtx b/markdown.dtx
index 8d85724d0..dfa2c139e 100644
--- a/markdown.dtx
+++ b/markdown.dtx
@@ -15211,6 +15211,7 @@ parsers.commented_line         = Cs(((parsers.linechar
                                       * parsers.percent
                                       + parsers.backslash
                                       * (parsers.linechar
+                                        + parsers.newline
                                         - parsers.backslash
                                         - parsers.percent))
                                  )^0)
diff --git a/tests/testfiles/lunamark-markdown/no-strip-comments.test b/tests/testfiles/lunamark-markdown/no-strip-comments.test
index 12774040f..f24b05507 100644
--- a/tests/testfiles/lunamark-markdown/no-strip-comments.test
+++ b/tests/testfiles/lunamark-markdown/no-strip-comments.test
@@ -1,9 +1,16 @@
 <<<
 This test ensures that the Lua `stripComments` option is disabled by default.
-The following *emphasi% this is a comment
-  zed text* should be interrupted and this *emphasi\% another one
+
+The following *emphasi%  this is a comment
+  zed text* should be interrupted and this *emphasi\%  another one
 zed text* should also be interrupted.
+
+A single backslash at the *end of \
+a line* should be allowed by the preprocessor.
 >>>
 codeSpan: stripComments
+interblockSeparator
 emphasis: emphasi(percentSign) this is a comment zed text
 emphasis: emphasi(backslash)(percentSign) another one zed text
+interblockSeparator
+emphasis: end of (backslash) a line
diff --git a/tests/testfiles/lunamark-markdown/strip-comments.test b/tests/testfiles/lunamark-markdown/strip-comments.test
index 3def73e8f..5f43a1711 100644
--- a/tests/testfiles/lunamark-markdown/strip-comments.test
+++ b/tests/testfiles/lunamark-markdown/strip-comments.test
@@ -1,16 +1,24 @@
 \def\markdownOptionStripComments{true}
 <<<
 This test ensures that the Lua `stripComments` option correctly propagates
-through the plain TeX interface. The following *emphasi% this is a comment
-  zed text* should be uninterrupted, whereas this *emphasi\% another one
+through the plain TeX interface.
+
+The following *emphasi%  this is a comment
+  zed text* should be uninterrupted, whereas this *emphasi\%  another one
 zed text* should be interrupted.
 
 The following *emphasi% this is a comment
 
   zed text* should be broken into two paragraphs.
+
+A single backslash at the *end of \
+a line* should be allowed by the preprocessor.
 >>>
 codeSpan: stripComments
+interblockSeparator
 emphasis: emphasized text
 emphasis: emphasi(percentSign) another one zed text
 interblockSeparator
 interblockSeparator
+interblockSeparator
+emphasis: end of (backslash) a line