From 5ec8db1745c2bdcca3706ab8cfbbe5c11fc457c1 Mon Sep 17 00:00:00 2001
From: Seiya <20365512+seiyab@users.noreply.github.com>
Date: Fri, 18 Sep 2026 06:02:50 +0900
Subject: [PATCH] [3.9.x] Markdown: Don't let Liquid objects interrupt
 paragraphs (#20087)

Co-authored-by: fisker <lionkay@gmail.com>
---
 changelog_unreleased/markdown/20087.md        |  17 ++
 .../micromark/micromark-extension-liquid.js   |   4 +-
 .../liquid/__snapshots__/format.test.js.snap  | 157 ++++++++++++++++++
 tests/format/markdown/liquid/issue-20083.md   |  34 ++++
 4 files changed, 210 insertions(+), 2 deletions(-)
 create mode 100644 changelog_unreleased/markdown/20087.md
 create mode 100644 tests/format/markdown/liquid/issue-20083.md

diff --git a/changelog_unreleased/markdown/20087.md b/changelog_unreleased/markdown/20087.md
new file mode 100644
index 000000000..36a8e5ea1
--- /dev/null
+++ b/changelog_unreleased/markdown/20087.md
@@ -0,0 +1,17 @@
+#### Don't let Liquid objects interrupt paragraphs (#20087 by @seiyab)
+
+<!-- prettier-ignore -->
+```markdown
+<!-- Input -->
+If `module` is not a [`WebAssembly.Module`](/en-US/docs/WebAssembly/Reference/JavaScript_interface/Module) object instance, a
+{{jsxref("TypeError")}} is thrown.
+
+<!-- Prettier stable -->
+If `module` is not a [`WebAssembly.Module`](/en-US/docs/WebAssembly/Reference/JavaScript_interface/Module) object instance, a
+
+{{jsxref("TypeError")}} is thrown.
+
+<!-- Prettier main -->
+If `module` is not a [`WebAssembly.Module`](/en-US/docs/WebAssembly/Reference/JavaScript_interface/Module) object instance, a
+{{jsxref("TypeError")}} is thrown.
+```
diff --git a/src/language-markdown/parse/micromark/micromark-extension-liquid.js b/src/language-markdown/parse/micromark/micromark-extension-liquid.js
index 45b011a28..48a7ce40f 100644
--- a/src/language-markdown/parse/micromark/micromark-extension-liquid.js
+++ b/src/language-markdown/parse/micromark/micromark-extension-liquid.js
@@ -77,7 +77,7 @@ function liquidSyntax() {
    */
   function tokenize(effects, ok, nok, mode) {
     const isFlow = mode === "flow";
-    const { interrupt, now, parser } = this;
+    const { now, parser } = this;
     /** @type {typeof codes.rightCurlyBrace | typeof codes.percentSign} */
     let closingCode;
 
@@ -97,7 +97,7 @@ function liquidSyntax() {
                 ? codes.percentSign
                 : codes.rightCurlyBrace;
             effects.consume(code);
-            return isFlow && interrupt ? ok : inside;
+            return inside;
           default:
             return nok(code);
         }
diff --git a/tests/format/markdown/liquid/__snapshots__/format.test.js.snap b/tests/format/markdown/liquid/__snapshots__/format.test.js.snap
index 75ed735b3..502830af0 100644
--- a/tests/format/markdown/liquid/__snapshots__/format.test.js.snap
+++ b/tests/format/markdown/liquid/__snapshots__/format.test.js.snap
@@ -511,6 +511,163 @@ Inline {{ liquid }} stays inline.
 ================================================================================
 `;
 
+exports[`issue-20083.md - {"proseWrap":"always"} format 1`] = `
+====================================options=====================================
+parsers: ["markdown"]
+proseWrap: "always"
+                                                      printWidth: 80 (default) |
+=====================================input======================================
+Taken from https://github.com/mdn/content/blob/3f221b9845703eb21db70cdc321f843d5c1c072b/files/en-us/webassembly/reference/javascript_interface/module/customsections_static/index.md?plain=1#L32-L33
+
+If \`module\` is not a [\`WebAssembly.Module\`](/en-US/docs/WebAssembly/Reference/JavaScript_interface/Module) object instance, a
+{{jsxref("TypeError")}} is thrown.
+
+---
+
+text
+{% comment %} here is comment {% endcomment %}
+
+---
+
+text
+{{ comment }} here is comment {{ endcomment }}
+
+---
+
+text
+{% comment %} text
+
+---
+
+text
+{{ comment }} text
+
+---
+
+text
+{{abc}}
+
+---
+
+text
+{% tag %}
+
+=====================================output=====================================
+Taken from
+https://github.com/mdn/content/blob/3f221b9845703eb21db70cdc321f843d5c1c072b/files/en-us/webassembly/reference/javascript_interface/module/customsections_static/index.md?plain=1#L32-L33
+
+If \`module\` is not a
+[\`WebAssembly.Module\`](/en-US/docs/WebAssembly/Reference/JavaScript_interface/Module)
+object instance, a {{jsxref("TypeError")}} is thrown.
+
+---
+
+text {% comment %} here is comment {% endcomment %}
+
+---
+
+text {{ comment }} here is comment {{ endcomment }}
+
+---
+
+text {% comment %} text
+
+---
+
+text {{ comment }} text
+
+---
+
+text
+{{abc}}
+
+---
+
+text
+{% tag %}
+
+================================================================================
+`;
+
+exports[`issue-20083.md format 1`] = `
+====================================options=====================================
+parsers: ["markdown"]
+                                                      printWidth: 80 (default) |
+=====================================input======================================
+Taken from https://github.com/mdn/content/blob/3f221b9845703eb21db70cdc321f843d5c1c072b/files/en-us/webassembly/reference/javascript_interface/module/customsections_static/index.md?plain=1#L32-L33
+
+If \`module\` is not a [\`WebAssembly.Module\`](/en-US/docs/WebAssembly/Reference/JavaScript_interface/Module) object instance, a
+{{jsxref("TypeError")}} is thrown.
+
+---
+
+text
+{% comment %} here is comment {% endcomment %}
+
+---
+
+text
+{{ comment }} here is comment {{ endcomment }}
+
+---
+
+text
+{% comment %} text
+
+---
+
+text
+{{ comment }} text
+
+---
+
+text
+{{abc}}
+
+---
+
+text
+{% tag %}
+
+=====================================output=====================================
+Taken from https://github.com/mdn/content/blob/3f221b9845703eb21db70cdc321f843d5c1c072b/files/en-us/webassembly/reference/javascript_interface/module/customsections_static/index.md?plain=1#L32-L33
+
+If \`module\` is not a [\`WebAssembly.Module\`](/en-US/docs/WebAssembly/Reference/JavaScript_interface/Module) object instance, a
+{{jsxref("TypeError")}} is thrown.
+
+---
+
+text
+{% comment %} here is comment {% endcomment %}
+
+---
+
+text
+{{ comment }} here is comment {{ endcomment }}
+
+---
+
+text
+{% comment %} text
+
+---
+
+text
+{{ comment }} text
+
+---
+
+text
+{{abc}}
+
+---
+
+text
+{% tag %}
+
+================================================================================
+`;
+
 exports[`unbalanced-mismatched-braces.md - {"proseWrap":"always"} format 1`] = `
 ====================================options=====================================
 parsers: ["markdown"]
diff --git a/tests/format/markdown/liquid/issue-20083.md b/tests/format/markdown/liquid/issue-20083.md
new file mode 100644
index 000000000..2fce9bc69
--- /dev/null
+++ b/tests/format/markdown/liquid/issue-20083.md
@@ -0,0 +1,34 @@
+Taken from https://github.com/mdn/content/blob/3f221b9845703eb21db70cdc321f843d5c1c072b/files/en-us/webassembly/reference/javascript_interface/module/customsections_static/index.md?plain=1#L32-L33
+
+If `module` is not a [`WebAssembly.Module`](/en-US/docs/WebAssembly/Reference/JavaScript_interface/Module) object instance, a
+{{jsxref("TypeError")}} is thrown.
+
+---
+
+text
+{% comment %} here is comment {% endcomment %}
+
+---
+
+text
+{{ comment }} here is comment {{ endcomment }}
+
+---
+
+text
+{% comment %} text
+
+---
+
+text
+{{ comment }} text
+
+---
+
+text
+{{abc}}
+
+---
+
+text
+{% tag %}