Adding upstream version 9.0.3.

Signed-off-by: Daniel Baumann <daniel@debian.org>

1 files changed, 1365 insertions, 0 deletions

diff --git a/modules/markup/markdown/markdown_test.go b/modules/markup/markdown/markdown_test.go
new file mode 100644
index 0000000..cc2beca
--- /dev/null
+++ b/modules/markup/markdown/markdown_test.go
@@ -0,0 +1,1365 @@
+// Copyright 2017 The Gitea Authors. All rights reserved.
+// SPDX-License-Identifier: MIT
+
+package markdown_test
+
+import (
+	"context"
+	"html/template"
+	"os"
+	"strings"
+	"testing"
+
+	"code.gitea.io/gitea/models/unittest"
+	"code.gitea.io/gitea/modules/git"
+	"code.gitea.io/gitea/modules/log"
+	"code.gitea.io/gitea/modules/markup"
+	"code.gitea.io/gitea/modules/markup/markdown"
+	"code.gitea.io/gitea/modules/setting"
+	"code.gitea.io/gitea/modules/test"
+	"code.gitea.io/gitea/modules/util"
+
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+)
+
+const (
+	AppURL  = "http://localhost:3000/"
+	FullURL = AppURL + "gogits/gogs/"
+)
+
+// these values should match the const above
+var localMetas = map[string]string{
+	"user":     "gogits",
+	"repo":     "gogs",
+	"repoPath": "../../../tests/gitea-repositories-meta/user13/repo11.git/",
+}
+
+func TestMain(m *testing.M) {
+	unittest.InitSettings()
+	if err := git.InitSimple(context.Background()); err != nil {
+		log.Fatal("git init failed, err: %v", err)
+	}
+	markup.Init(&markup.ProcessorHelper{
+		IsUsernameMentionable: func(ctx context.Context, username string) bool {
+			return username == "r-lyeh"
+		},
+	})
+	os.Exit(m.Run())
+}
+
+func TestRender_StandardLinks(t *testing.T) {
+	setting.AppURL = AppURL
+
+	test := func(input, expected, expectedWiki string) {
+		buffer, err := markdown.RenderString(&markup.RenderContext{
+			Ctx: git.DefaultContext,
+			Links: markup.Links{
+				Base: FullURL,
+			},
+		}, input)
+		require.NoError(t, err)
+		assert.Equal(t, strings.TrimSpace(expected), strings.TrimSpace(string(buffer)))
+
+		buffer, err = markdown.RenderString(&markup.RenderContext{
+			Ctx: git.DefaultContext,
+			Links: markup.Links{
+				Base: FullURL,
+			},
+			IsWiki: true,
+		}, input)
+		require.NoError(t, err)
+		assert.Equal(t, strings.TrimSpace(expectedWiki), strings.TrimSpace(string(buffer)))
+	}
+
+	googleRendered := `<p><a href="https://google.com/" rel="nofollow">https://google.com/</a></p>`
+	test("<https://google.com/>", googleRendered, googleRendered)
+
+	lnk := util.URLJoin(FullURL, "WikiPage")
+	lnkWiki := util.URLJoin(FullURL, "wiki", "WikiPage")
+	test("[WikiPage](WikiPage)",
+		`<p><a href="`+lnk+`" rel="nofollow">WikiPage</a></p>`,
+		`<p><a href="`+lnkWiki+`" rel="nofollow">WikiPage</a></p>`)
+}
+
+func TestRender_Images(t *testing.T) {
+	setting.AppURL = AppURL
+
+	test := func(input, expected string) {
+		buffer, err := markdown.RenderString(&markup.RenderContext{
+			Ctx: git.DefaultContext,
+			Links: markup.Links{
+				Base: FullURL,
+			},
+		}, input)
+		require.NoError(t, err)
+		assert.Equal(t, strings.TrimSpace(expected), strings.TrimSpace(string(buffer)))
+	}
+
+	url := "../../.images/src/02/train.jpg"
+	title := "Train"
+	href := "https://gitea.io"
+	result := util.URLJoin(FullURL, url)
+	// hint: With Markdown v2.5.2, there is a new syntax: [link](URL){:target="_blank"} , but we do not support it now
+
+	test(
+		"!["+title+"]("+url+")",
+		`<p><a href="`+result+`" target="_blank" rel="nofollow noopener"><img src="`+result+`" alt="`+title+`"/></a></p>`)
+
+	test(
+		"[["+title+"|"+url+"]]",
+		`<p><a href="`+result+`" rel="nofollow"><img src="`+result+`" title="`+title+`" alt="`+title+`"/></a></p>`)
+	test(
+		"[!["+title+"]("+url+")]("+href+")",
+		`<p><a href="`+href+`" rel="nofollow"><img src="`+result+`" alt="`+title+`"/></a></p>`)
+
+	test(
+		"!["+title+"]("+url+")",
+		`<p><a href="`+result+`" target="_blank" rel="nofollow noopener"><img src="`+result+`" alt="`+title+`"/></a></p>`)
+
+	test(
+		"[["+title+"|"+url+"]]",
+		`<p><a href="`+result+`" rel="nofollow"><img src="`+result+`" title="`+title+`" alt="`+title+`"/></a></p>`)
+	test(
+		"[!["+title+"]("+url+")]("+href+")",
+		`<p><a href="`+href+`" rel="nofollow"><img src="`+result+`" alt="`+title+`"/></a></p>`)
+}
+
+func testAnswers(baseURLContent, baseURLImages string) []string {
+	return []string{
+		`<p>Wiki! Enjoy :)</p>
+<ul>
+<li><a href="` + baseURLContent + `/Links" rel="nofollow">Links, Language bindings, Engine bindings</a></li>
+<li><a href="` + baseURLContent + `/Tips" rel="nofollow">Tips</a></li>
+</ul>
+<p>See commit <a href="/gogits/gogs/commit/65f1bf27bc" rel="nofollow"><code>65f1bf27bc</code></a></p>
+<p>Ideas and codes</p>
+<ul>
+<li>Bezier widget (by <a href="/r-lyeh" rel="nofollow">@r-lyeh</a>) <a href="http://localhost:3000/ocornut/imgui/issues/786" class="ref-issue" rel="nofollow">ocornut/imgui#786</a></li>
+<li>Bezier widget (by <a href="/r-lyeh" rel="nofollow">@r-lyeh</a>) <a href="http://localhost:3000/gogits/gogs/issues/786" class="ref-issue" rel="nofollow">#786</a></li>
+<li>Node graph editors <a href="https://github.com/ocornut/imgui/issues/306" rel="nofollow">https://github.com/ocornut/imgui/issues/306</a></li>
+<li><a href="` + baseURLContent + `/memory_editor_example" rel="nofollow">Memory Editor</a></li>
+<li><a href="` + baseURLContent + `/plot_var_example" rel="nofollow">Plot var helper</a></li>
+</ul>
+`,
+		`<h2 id="user-content-what-is-wine-staging">What is Wine Staging?</h2>
+<p><strong>Wine Staging</strong> on website <a href="http://wine-staging.com" rel="nofollow">wine-staging.com</a>.</p>
+<h2 id="user-content-quick-links">Quick Links</h2>
+<p>Here are some links to the most important topics. You can find the full list of pages at the sidebar.</p>
+<table>
+<thead>
+<tr>
+<th><a href="` + baseURLImages + `/images/icon-install.png" rel="nofollow"><img src="` + baseURLImages + `/images/icon-install.png" title="icon-install.png" alt="images/icon-install.png"/></a></th>
+<th><a href="` + baseURLContent + `/Installation" rel="nofollow">Installation</a></th>
+</tr>
+</thead>
+<tbody>
+<tr>
+<td><a href="` + baseURLImages + `/images/icon-usage.png" rel="nofollow"><img src="` + baseURLImages + `/images/icon-usage.png" title="icon-usage.png" alt="images/icon-usage.png"/></a></td>
+<td><a href="` + baseURLContent + `/Usage" rel="nofollow">Usage</a></td>
+</tr>
+</tbody>
+</table>
+`,
+		`<p><a href="http://www.excelsiorjet.com/" rel="nofollow">Excelsior JET</a> allows you to create native executables for Windows, Linux and Mac OS X.</p>
+<ol>
+<li><a href="https://github.com/libgdx/libgdx/wiki/Gradle-on-the-Commandline#packaging-for-the-desktop" rel="nofollow">Package your libGDX application</a><br/>
+<a href="` + baseURLImages + `/images/1.png" rel="nofollow"><img src="` + baseURLImages + `/images/1.png" title="1.png" alt="images/1.png"/></a></li>
+<li>Perform a test run by hitting the Run! button.<br/>
+<a href="` + baseURLImages + `/images/2.png" rel="nofollow"><img src="` + baseURLImages + `/images/2.png" title="2.png" alt="images/2.png"/></a></li>
+</ol>
+<h2 id="user-content-custom-id">More tests</h2>
+<p>(from <a href="https://www.markdownguide.org/extended-syntax/" rel="nofollow">https://www.markdownguide.org/extended-syntax/</a>)</p>
+<h3 id="user-content-checkboxes">Checkboxes</h3>
+<ul>
+<li class="task-list-item"><input type="checkbox" disabled="" data-source-position="434"/>unchecked</li>
+<li class="task-list-item"><input type="checkbox" disabled="" data-source-position="450" checked=""/>checked</li>
+<li class="task-list-item"><input type="checkbox" disabled="" data-source-position="464"/>still unchecked</li>
+</ul>
+<h3 id="user-content-definition-list">Definition list</h3>
+<dl>
+<dt>First Term</dt>
+<dd>This is the definition of the first term.</dd>
+<dt>Second Term</dt>
+<dd>This is one definition of the second term.</dd>
+<dd>This is another definition of the second term.</dd>
+</dl>
+<h3 id="user-content-footnotes">Footnotes</h3>
+<p>Here is a simple footnote,<sup id="fnref:user-content-1"><a href="#fn:user-content-1" rel="nofollow">1</a></sup> and here is a longer one.<sup id="fnref:user-content-bignote"><a href="#fn:user-content-bignote" rel="nofollow">2</a></sup></p>
+<div>
+<hr/>
+<ol>
+<li id="fn:user-content-1">
+<p>This is the first footnote. <a href="#fnref:user-content-1" rel="nofollow">↩︎</a></p>
+</li>
+<li id="fn:user-content-bignote">
+<p>Here is one with multiple paragraphs and code.</p>
+<p>Indent paragraphs to include them in the footnote.</p>
+<p><code>{ my code }</code></p>
+<p>Add as many paragraphs as you like. <a href="#fnref:user-content-bignote" rel="nofollow">↩︎</a></p>
+</li>
+</ol>
+</div>
+`, `<ul>
+<li class="task-list-item"><input type="checkbox" disabled="" data-source-position="3"/> If you want to rebase/retry this PR, click this checkbox.</li>
+</ul>
+<hr/>
+<p>This PR has been generated by <a href="https://github.com/renovatebot/renovate" rel="nofollow">Renovate Bot</a>.</p>
+`,
+	}
+}
+
+// Test cases without ambiguous links
+var sameCases = []string{
+	// dear imgui wiki markdown extract: special wiki syntax
+	`Wiki! Enjoy :)
+- [[Links, Language bindings, Engine bindings|Links]]
+- [[Tips]]
+
+See commit 65f1bf27bc
+
+Ideas and codes
+
+- Bezier widget (by @r-lyeh) ` + AppURL + `ocornut/imgui/issues/786
+- Bezier widget (by @r-lyeh) ` + AppURL + `gogits/gogs/issues/786
+- Node graph editors https://github.com/ocornut/imgui/issues/306
+- [[Memory Editor|memory_editor_example]]
+- [[Plot var helper|plot_var_example]]`,
+	// wine-staging wiki home extract: tables, special wiki syntax, images
+	`## What is Wine Staging?
+**Wine Staging** on website [wine-staging.com](http://wine-staging.com).
+
+## Quick Links
+Here are some links to the most important topics. You can find the full list of pages at the sidebar.
+
+| [[images/icon-install.png]]    | [[Installation]]                                         |
+|--------------------------------|----------------------------------------------------------|
+| [[images/icon-usage.png]]      | [[Usage]]                                                |
+`,
+	// libgdx wiki page: inline images with special syntax
+	`[Excelsior JET](http://www.excelsiorjet.com/) allows you to create native executables for Windows, Linux and Mac OS X.
+
+1. [Package your libGDX application](https://github.com/libgdx/libgdx/wiki/Gradle-on-the-Commandline#packaging-for-the-desktop)
+[[images/1.png]]
+2. Perform a test run by hitting the Run! button.
+[[images/2.png]]
+
+## More tests {#custom-id}
+
+(from https://www.markdownguide.org/extended-syntax/)
+
+### Checkboxes
+
+- [ ] unchecked
+- [x] checked
+- [ ] still unchecked
+
+### Definition list
+
+First Term
+: This is the definition of the first term.
+
+Second Term
+: This is one definition of the second term.
+: This is another definition of the second term.
+
+### Footnotes
+
+Here is a simple footnote,[^1] and here is a longer one.[^bignote]
+
+[^1]: This is the first footnote.
+
+[^bignote]: Here is one with multiple paragraphs and code.
+
+    Indent paragraphs to include them in the footnote.
+
+    ` + "`{ my code }`" + `
+
+    Add as many paragraphs as you like.
+`,
+	`
+- [ ] <!-- rebase-check --> If you want to rebase/retry this PR, click this checkbox.
+
+---
+
+This PR has been generated by [Renovate Bot](https://github.com/renovatebot/renovate).
+
+<!-- test-comment -->`,
+}
+
+func TestTotal_RenderWiki(t *testing.T) {
+	setting.AppURL = AppURL
+
+	answers := testAnswers(util.URLJoin(FullURL, "wiki"), util.URLJoin(FullURL, "wiki", "raw"))
+
+	for i := 0; i < len(sameCases); i++ {
+		line, err := markdown.RenderString(&markup.RenderContext{
+			Ctx: git.DefaultContext,
+			Links: markup.Links{
+				Base: FullURL,
+			},
+			Metas:  localMetas,
+			IsWiki: true,
+		}, sameCases[i])
+		require.NoError(t, err)
+		assert.Equal(t, template.HTML(answers[i]), line)
+	}
+
+	testCases := []string{
+		// Guard wiki sidebar: special syntax
+		`[[Guardfile-DSL / Configuring-Guard|Guardfile-DSL---Configuring-Guard]]`,
+		// rendered
+		`<p><a href="` + FullURL + `wiki/Guardfile-DSL---Configuring-Guard" rel="nofollow">Guardfile-DSL / Configuring-Guard</a></p>
+`,
+		// special syntax
+		`[[Name|Link]]`,
+		// rendered
+		`<p><a href="` + FullURL + `wiki/Link" rel="nofollow">Name</a></p>
+`,
+	}
+
+	for i := 0; i < len(testCases); i += 2 {
+		line, err := markdown.RenderString(&markup.RenderContext{
+			Ctx: git.DefaultContext,
+			Links: markup.Links{
+				Base: FullURL,
+			},
+			IsWiki: true,
+		}, testCases[i])
+		require.NoError(t, err)
+		assert.Equal(t, template.HTML(testCases[i+1]), line)
+	}
+}
+
+func TestTotal_RenderString(t *testing.T) {
+	setting.AppURL = AppURL
+
+	answers := testAnswers(util.URLJoin(FullURL, "src", "master"), util.URLJoin(FullURL, "media", "master"))
+
+	for i := 0; i < len(sameCases); i++ {
+		line, err := markdown.RenderString(&markup.RenderContext{
+			Ctx: git.DefaultContext,
+			Links: markup.Links{
+				Base:       FullURL,
+				BranchPath: "master",
+			},
+			Metas: localMetas,
+		}, sameCases[i])
+		require.NoError(t, err)
+		assert.Equal(t, template.HTML(answers[i]), line)
+	}
+
+	testCases := []string{}
+
+	for i := 0; i < len(testCases); i += 2 {
+		line, err := markdown.RenderString(&markup.RenderContext{
+			Ctx: git.DefaultContext,
+			Links: markup.Links{
+				Base: FullURL,
+			},
+		}, testCases[i])
+		require.NoError(t, err)
+		assert.Equal(t, template.HTML(testCases[i+1]), line)
+	}
+}
+
+func TestRender_RenderParagraphs(t *testing.T) {
+	test := func(t *testing.T, str string, cnt int) {
+		res, err := markdown.RenderRawString(&markup.RenderContext{Ctx: git.DefaultContext}, str)
+		require.NoError(t, err)
+		assert.Equal(t, cnt, strings.Count(res, "<p"), "Rendered result for unix should have %d paragraph(s) but has %d:\n%s\n", cnt, strings.Count(res, "<p"), res)
+
+		mac := strings.ReplaceAll(str, "\n", "\r")
+		res, err = markdown.RenderRawString(&markup.RenderContext{Ctx: git.DefaultContext}, mac)
+		require.NoError(t, err)
+		assert.Equal(t, cnt, strings.Count(res, "<p"), "Rendered result for mac should have %d paragraph(s) but has %d:\n%s\n", cnt, strings.Count(res, "<p"), res)
+
+		dos := strings.ReplaceAll(str, "\n", "\r\n")
+		res, err = markdown.RenderRawString(&markup.RenderContext{Ctx: git.DefaultContext}, dos)
+		require.NoError(t, err)
+		assert.Equal(t, cnt, strings.Count(res, "<p"), "Rendered result for windows should have %d paragraph(s) but has %d:\n%s\n", cnt, strings.Count(res, "<p"), res)
+	}
+
+	test(t, "\nOne\nTwo\nThree", 1)
+	test(t, "\n\nOne\nTwo\nThree", 1)
+	test(t, "\n\nOne\nTwo\nThree\n\n\n", 1)
+	test(t, "A\n\nB\nC\n", 2)
+	test(t, "A\n\n\nB\nC\n", 2)
+}
+
+func TestMarkdownRenderRaw(t *testing.T) {
+	testcases := [][]byte{
+		{ // clusterfuzz_testcase_minimized_fuzz_markdown_render_raw_6267570554535936
+			0x2a, 0x20, 0x2d, 0x0a, 0x09, 0x20, 0x60, 0x5b, 0x0a, 0x09, 0x20, 0x60,
+			0x5b,
+		},
+		{ // clusterfuzz_testcase_minimized_fuzz_markdown_render_raw_6278827345051648
+			0x2d, 0x20, 0x2d, 0x0d, 0x09, 0x60, 0x0d, 0x09, 0x60,
+		},
+		{ // clusterfuzz_testcase_minimized_fuzz_markdown_render_raw_6016973788020736[] = {
+			0x7b, 0x63, 0x6c, 0x61, 0x73, 0x73, 0x3d, 0x35, 0x7d, 0x0a, 0x3d,
+		},
+	}
+
+	for _, testcase := range testcases {
+		log.Info("Test markdown render error with fuzzy data: %x, the following errors can be recovered", testcase)
+		_, err := markdown.RenderRawString(&markup.RenderContext{Ctx: git.DefaultContext}, string(testcase))
+		require.NoError(t, err)
+	}
+}
+
+func TestRenderSiblingImages_Issue12925(t *testing.T) {
+	testcase := `![image1](/image1)
+![image2](/image2)
+`
+	expected := `<p><a href="/image1" target="_blank" rel="nofollow noopener"><img src="/image1" alt="image1"></a><br>
+<a href="/image2" target="_blank" rel="nofollow noopener"><img src="/image2" alt="image2"></a></p>
+`
+	res, err := markdown.RenderRawString(&markup.RenderContext{Ctx: git.DefaultContext}, testcase)
+	require.NoError(t, err)
+	assert.Equal(t, expected, res)
+}
+
+func TestRenderEmojiInLinks_Issue12331(t *testing.T) {
+	testcase := `[Link with emoji :moon: in text](https://gitea.io)`
+	expected := `<p><a href="https://gitea.io" rel="nofollow">Link with emoji <span class="emoji" aria-label="waxing gibbous moon">🌔</span> in text</a></p>
+`
+	res, err := markdown.RenderString(&markup.RenderContext{Ctx: git.DefaultContext}, testcase)
+	require.NoError(t, err)
+	assert.Equal(t, template.HTML(expected), res)
+}
+
+func TestColorPreview(t *testing.T) {
+	const nl = "\n"
+	positiveTests := []struct {
+		testcase string
+		expected string
+	}{
+		{ // hex
+			"`#FF0000`",
+			`<p><code>#FF0000<span class="color-preview" style="background-color: #FF0000"></span></code></p>` + nl,
+		},
+		{ // rgb
+			"`rgb(16, 32, 64)`",
+			`<p><code>rgb(16, 32, 64)<span class="color-preview" style="background-color: rgb(16, 32, 64)"></span></code></p>` + nl,
+		},
+		{ // short hex
+			"This is the color white `#000`",
+			`<p>This is the color white <code>#000<span class="color-preview" style="background-color: #000"></span></code></p>` + nl,
+		},
+		{ // hsl
+			"HSL stands for hue, saturation, and lightness. An example: `hsl(0, 100%, 50%)`.",
+			`<p>HSL stands for hue, saturation, and lightness. An example: <code>hsl(0, 100%, 50%)<span class="color-preview" style="background-color: hsl(0, 100%, 50%)"></span></code>.</p>` + nl,
+		},
+		{ // uppercase hsl
+			"HSL stands for hue, saturation, and lightness. An example: `HSL(0, 100%, 50%)`.",
+			`<p>HSL stands for hue, saturation, and lightness. An example: <code>HSL(0, 100%, 50%)<span class="color-preview" style="background-color: HSL(0, 100%, 50%)"></span></code>.</p>` + nl,
+		},
+	}
+
+	for _, test := range positiveTests {
+		res, err := markdown.RenderString(&markup.RenderContext{Ctx: git.DefaultContext}, test.testcase)
+		require.NoError(t, err, "Unexpected error in testcase: %q", test.testcase)
+		assert.Equal(t, template.HTML(test.expected), res, "Unexpected result in testcase %q", test.testcase)
+	}
+
+	negativeTests := []string{
+		// not a color code
+		"`FF0000`",
+		// inside a code block
+		"```javascript" + nl + `const red = "#FF0000";` + nl + "```",
+		// no backticks
+		"rgb(166, 32, 64)",
+		// typo
+		"`hsI(0, 100%, 50%)`", // codespell-ignore
+		// looks like a color but not really
+		"`hsl(40, 60, 80)`",
+	}
+
+	for _, test := range negativeTests {
+		res, err := markdown.RenderString(&markup.RenderContext{Ctx: git.DefaultContext}, test)
+		require.NoError(t, err, "Unexpected error in testcase: %q", test)
+		assert.NotContains(t, res, `<span class="color-preview" style="background-color: `, "Unexpected result in testcase %q", test)
+	}
+}
+
+func TestMathBlock(t *testing.T) {
+	const nl = "\n"
+	testcases := []struct {
+		testcase string
+		expected string
+	}{
+		{
+			"$a$",
+			`<p><code class="language-math is-loading">a</code></p>` + nl,
+		},
+		{
+			"$ a $",
+			`<p><code class="language-math is-loading">a</code></p>` + nl,
+		},
+		{
+			"$a$ $b$",
+			`<p><code class="language-math is-loading">a</code> <code class="language-math is-loading">b</code></p>` + nl,
+		},
+		{
+			`\(a\) \(b\)`,
+			`<p><code class="language-math is-loading">a</code> <code class="language-math is-loading">b</code></p>` + nl,
+		},
+		{
+			`$a$.`,
+			`<p><code class="language-math is-loading">a</code>.</p>` + nl,
+		},
+		{
+			`.$a$`,
+			`<p>.$a$</p>` + nl,
+		},
+		{
+			`$a a$b b$`,
+			`<p>$a a$b b$</p>` + nl,
+		},
+		{
+			`a a$b b`,
+			`<p>a a$b b</p>` + nl,
+		},
+		{
+			`a$b $a a$b b$`,
+			`<p>a$b $a a$b b$</p>` + nl,
+		},
+		{
+			"a$x$",
+			`<p>a$x$</p>` + nl,
+		},
+		{
+			"$x$a",
+			`<p>$x$a</p>` + nl,
+		},
+		{
+			"$$a$$",
+			`<pre class="code-block is-loading"><code class="chroma language-math display">a</code></pre>` + nl,
+		},
+		{
+			`\[a b\]`,
+			`<pre class="code-block is-loading"><code class="chroma language-math display">a b</code></pre>` + nl,
+		},
+		{
+			`\[a b]`,
+			`<p>[a b]</p>` + nl,
+		},
+		{
+			`$$a`,
+			`<p>$$a</p>` + nl,
+		},
+		{
+			"$a$ ($b$) [$c$] {$d$}",
+			`<p><code class="language-math is-loading">a</code> (<code class="language-math is-loading">b</code>) [$c$] {$d$}</p>` + nl,
+		},
+		{
+			"$$a$$ test",
+			`<p><code class="language-math display is-loading">a</code> test</p>` + nl,
+		},
+		{
+			"test $$a$$",
+			`<p>test <code class="language-math display is-loading">a</code></p>` + nl,
+		},
+	}
+
+	for _, test := range testcases {
+		res, err := markdown.RenderString(&markup.RenderContext{Ctx: git.DefaultContext}, test.testcase)
+		require.NoError(t, err, "Unexpected error in testcase: %q", test.testcase)
+		assert.Equal(t, template.HTML(test.expected), res, "Unexpected result in testcase %q", test.testcase)
+	}
+}
+
+func TestFootnote(t *testing.T) {
+	testcases := []struct {
+		testcase string
+		expected string
+	}{
+		{
+			`Citation needed[^0].
+[^0]: Source`,
+			`<p>Citation needed<sup id="fnref:user-content-0"><a href="#fn:user-content-0" rel="nofollow">1</a></sup>.</p>
+<div>
+<hr/>
+<ol>
+<li id="fn:user-content-0">
+<p>Source <a href="#fnref:user-content-0" rel="nofollow">↩︎</a></p>
+</li>
+</ol>
+</div>
+`,
+		},
+		{
+			`Citation needed[^0]`,
+			`<p>Citation needed[^0]</p>
+`,
+		},
+		{
+			`Citation needed[^1], Citation needed twice[^3]
+[^3]: Source`,
+			`<p>Citation needed[^1], Citation needed twice<sup id="fnref:user-content-3"><a href="#fn:user-content-3" rel="nofollow">1</a></sup></p>
+<div>
+<hr/>
+<ol>
+<li id="fn:user-content-3">
+<p>Source <a href="#fnref:user-content-3" rel="nofollow">↩︎</a></p>
+</li>
+</ol>
+</div>
+`,
+		},
+		{
+			`Citation needed[^0]
+[^1]: Source`,
+			`<p>Citation needed[^0]</p>
+`,
+		},
+		{
+			`Citation needed[^0]
+[^0]: Source 1
+[^0]: Source 2`,
+			`<p>Citation needed<sup id="fnref:user-content-0"><a href="#fn:user-content-0" rel="nofollow">1</a></sup></p>
+<div>
+<hr/>
+<ol>
+<li id="fn:user-content-0">
+<p>Source 1 <a href="#fnref:user-content-0" rel="nofollow">↩︎</a></p>
+</li>
+</ol>
+</div>
+`,
+		},
+		{
+			`Citation needed![^0]
+[^0]: Source`,
+			`<p>Citation needed<sup id="fnref:user-content-0"><a href="#fn:user-content-0" rel="nofollow">1</a></sup></p>
+<div>
+<hr/>
+<ol>
+<li id="fn:user-content-0">
+<p>Source <a href="#fnref:user-content-0" rel="nofollow">↩︎</a></p>
+</li>
+</ol>
+</div>
+`,
+		},
+		{
+			`Trigger [^`,
+			`<p>Trigger [^</p>
+`,
+		},
+		{
+			`Trigger 2 [^0`,
+			`<p>Trigger 2 [^0</p>
+`,
+		},
+		{
+			`Citation needed[^0]
+[^0]: Source with citation needed[^1]
+[^1]: Source`,
+			`<p>Citation needed<sup id="fnref:user-content-0"><a href="#fn:user-content-0" rel="nofollow">1</a></sup></p>
+<div>
+<hr/>
+<ol>
+<li id="fn:user-content-0">
+<p>Source with citation needed<sup id="fnref:user-content-1"><a href="#fn:user-content-1" rel="nofollow">2</a></sup> <a href="#fnref:user-content-0" rel="nofollow">↩︎</a></p>
+</li>
+<li id="fn:user-content-1">
+<p>Source <a href="#fnref:user-content-1" rel="nofollow">↩︎</a></p>
+</li>
+</ol>
+</div>
+`,
+		},
+		{
+			`Citation needed[^#]
+[^#]: Source`,
+			`<p>Citation needed<sup id="fnref:user-content-1"><a href="#fn:user-content-1" rel="nofollow">1</a></sup></p>
+<div>
+<hr/>
+<ol>
+<li id="fn:user-content-1">
+<p>Source <a href="#fnref:user-content-1" rel="nofollow">↩︎</a></p>
+</li>
+</ol>
+</div>
+`,
+		},
+		{
+			`Citation needed[^0]
+    [^0]: Source`,
+			`<p>Citation needed[^0]<br/>
+[^0]: Source</p>
+`,
+		},
+		{
+			`[^0]: Source
+
+Citation needed[^0].`,
+			`<p>Citation needed<sup id="fnref:user-content-0"><a href="#fn:user-content-0" rel="nofollow">1</a></sup>.</p>
+<div>
+<hr/>
+<ol>
+<li id="fn:user-content-0">
+<p>Source <a href="#fnref:user-content-0" rel="nofollow">↩︎</a></p>
+</li>
+</ol>
+</div>
+`,
+		},
+		{
+			`Citation needed[^]
+[^]: Source`,
+			`<p>Citation needed[^]<br/>
+[^]: Source</p>
+`,
+		},
+		{
+			`Citation needed[^0]
+[^0] Source`,
+			`<p>Citation needed[^0]<br/>
+[^0] Source</p>
+`,
+		},
+		{
+			`Citation needed[^0]
+[^0 Source`,
+			`<p>Citation needed[^0]<br/>
+[^0 Source</p>
+`,
+		},
+		{
+			`Citation needed[^0] [^0]: Source`,
+			`<p>Citation needed[^0] [^0]: Source</p>
+`,
+		},
+		{
+			`Citation needed[^Source here 0 # 9-3]
+[^Source here 0 # 9-3]: Source`,
+			`<p>Citation needed<sup id="fnref:user-content-source-here-0-9-3"><a href="#fn:user-content-source-here-0-9-3" rel="nofollow">1</a></sup></p>
+<div>
+<hr/>
+<ol>
+<li id="fn:user-content-source-here-0-9-3">
+<p>Source <a href="#fnref:user-content-source-here-0-9-3" rel="nofollow">↩︎</a></p>
+</li>
+</ol>
+</div>
+`,
+		},
+		{
+			`Citation needed[^0]
+[^0]:`,
+			`<p>Citation needed<sup id="fnref:user-content-0"><a href="#fn:user-content-0" rel="nofollow">1</a></sup></p>
+<div>
+<hr/>
+<ol>
+<li id="fn:user-content-0">
+ <a href="#fnref:user-content-0" rel="nofollow">↩︎</a></li>
+</ol>
+</div>
+`,
+		},
+	}
+	for _, test := range testcases {
+		res, err := markdown.RenderString(&markup.RenderContext{Ctx: git.DefaultContext}, test.testcase)
+		require.NoError(t, err, "Unexpected error in testcase: %q", test.testcase)
+		assert.Equal(t, test.expected, string(res), "Unexpected result in testcase %q", test.testcase)
+	}
+}
+
+func TestTaskList(t *testing.T) {
+	testcases := []struct {
+		testcase string
+		expected string
+	}{
+		{
+			// data-source-position should take into account YAML frontmatter.
+			`---
+foo: bar
+---
+- [ ] task 1`,
+			`<details><summary><i class="icon table"></i></summary><table>
+<thead>
+<tr>
+<th>foo</th>
+</tr>
+</thead>
+<tbody>
+<tr>
+<td>bar</td>
+</tr>
+</tbody>
+</table>
+</details><ul>
+<li class="task-list-item"><input type="checkbox" disabled="" data-source-position="19"/>task 1</li>
+</ul>
+`,
+		},
+	}
+
+	for _, test := range testcases {
+		res, err := markdown.RenderString(&markup.RenderContext{Ctx: git.DefaultContext}, test.testcase)
+		require.NoError(t, err, "Unexpected error in testcase: %q", test.testcase)
+		assert.Equal(t, template.HTML(test.expected), res, "Unexpected result in testcase %q", test.testcase)
+	}
+}
+
+func TestRenderLinks(t *testing.T) {
+	input := `  space @mention-user${SPACE}${SPACE}
+/just/a/path.bin
+https://example.com/file.bin
+[local link](file.bin)
+[remote link](https://example.com)
+[[local link|file.bin]]
+[[remote link|https://example.com]]
+![local image](image.jpg)
+![local image](path/file)
+![local image](/path/file)
+![remote image](https://example.com/image.jpg)
+[[local image|image.jpg]]
+[[remote link|https://example.com/image.jpg]]
+https://example.com/user/repo/compare/88fc37a3c0a4dda553bdcfc80c178a58247f42fb...12fc37a3c0a4dda553bdcfc80c178a58247f42fb#hash
+com 88fc37a3c0a4dda553bdcfc80c178a58247f42fb...12fc37a3c0a4dda553bdcfc80c178a58247f42fb pare
+https://example.com/user/repo/commit/88fc37a3c0a4dda553bdcfc80c178a58247f42fb
+com 88fc37a3c0a4dda553bdcfc80c178a58247f42fb mit
+:+1:
+mail@domain.com
+@mention-user test
+#123
+  space${SPACE}${SPACE}
+`
+	input = strings.ReplaceAll(input, "${SPACE}", " ") // replace ${SPACE} with " ", to avoid some editor's auto-trimming
+	cases := []struct {
+		Links    markup.Links
+		IsWiki   bool
+		Expected string
+	}{
+		{ // 0
+			Links:  markup.Links{},
+			IsWiki: false,
+			Expected: `<p>space @mention-user<br/>
+/just/a/path.bin<br/>
+<a href="https://example.com/file.bin" rel="nofollow">https://example.com/file.bin</a><br/>
+<a href="/file.bin" rel="nofollow">local link</a><br/>
+<a href="https://example.com" rel="nofollow">remote link</a><br/>
+<a href="/src/file.bin" rel="nofollow">local link</a><br/>
+<a href="https://example.com" rel="nofollow">remote link</a><br/>
+<a href="/image.jpg" target="_blank" rel="nofollow noopener"><img src="/image.jpg" alt="local image"/></a><br/>
+<a href="/path/file" target="_blank" rel="nofollow noopener"><img src="/path/file" alt="local image"/></a><br/>
+<a href="/path/file" target="_blank" rel="nofollow noopener"><img src="/path/file" alt="local image"/></a><br/>
+<a href="https://example.com/image.jpg" target="_blank" rel="nofollow noopener"><img src="https://example.com/image.jpg" alt="remote image"/></a><br/>
+<a href="/image.jpg" rel="nofollow"><img src="/image.jpg" title="local image" alt="local image"/></a><br/>
+<a href="https://example.com/image.jpg" rel="nofollow"><img src="https://example.com/image.jpg" title="remote link" alt="remote link"/></a><br/>
+<a href="https://example.com/user/repo/compare/88fc37a3c0a4dda553bdcfc80c178a58247f42fb...12fc37a3c0a4dda553bdcfc80c178a58247f42fb#hash" rel="nofollow">https://example.com/user/repo/compare/88fc37a3c0a4dda553bdcfc80c178a58247f42fb...12fc37a3c0a4dda553bdcfc80c178a58247f42fb#hash</a><br/>
+com 88fc37a3c0a4dda553bdcfc80c178a58247f42fb...12fc37a3c0a4dda553bdcfc80c178a58247f42fb pare<br/>
+<a href="https://example.com/user/repo/commit/88fc37a3c0a4dda553bdcfc80c178a58247f42fb" rel="nofollow">https://example.com/user/repo/commit/88fc37a3c0a4dda553bdcfc80c178a58247f42fb</a><br/>
+com 88fc37a3c0a4dda553bdcfc80c178a58247f42fb mit<br/>
+<span class="emoji" aria-label="thumbs up">👍</span><br/>
+<a href="mailto:mail@domain.com" rel="nofollow">mail@domain.com</a><br/>
+@mention-user test<br/>
+#123<br/>
+space</p>
+`,
+		},
+		{ // 1
+			Links:  markup.Links{},
+			IsWiki: true,
+			Expected: `<p>space @mention-user<br/>
+/just/a/path.bin<br/>
+<a href="https://example.com/file.bin" rel="nofollow">https://example.com/file.bin</a><br/>
+<a href="/wiki/file.bin" rel="nofollow">local link</a><br/>
+<a href="https://example.com" rel="nofollow">remote link</a><br/>
+<a href="/wiki/file.bin" rel="nofollow">local link</a><br/>
+<a href="https://example.com" rel="nofollow">remote link</a><br/>
+<a href="/wiki/raw/image.jpg" target="_blank" rel="nofollow noopener"><img src="/wiki/raw/image.jpg" alt="local image"/></a><br/>
+<a href="/wiki/raw/path/file" target="_blank" rel="nofollow noopener"><img src="/wiki/raw/path/file" alt="local image"/></a><br/>
+<a href="/wiki/raw/path/file" target="_blank" rel="nofollow noopener"><img src="/wiki/raw/path/file" alt="local image"/></a><br/>
+<a href="https://example.com/image.jpg" target="_blank" rel="nofollow noopener"><img src="https://example.com/image.jpg" alt="remote image"/></a><br/>
+<a href="/wiki/raw/image.jpg" rel="nofollow"><img src="/wiki/raw/image.jpg" title="local image" alt="local image"/></a><br/>
+<a href="https://example.com/image.jpg" rel="nofollow"><img src="https://example.com/image.jpg" title="remote link" alt="remote link"/></a><br/>
+<a href="https://example.com/user/repo/compare/88fc37a3c0a4dda553bdcfc80c178a58247f42fb...12fc37a3c0a4dda553bdcfc80c178a58247f42fb#hash" rel="nofollow">https://example.com/user/repo/compare/88fc37a3c0a4dda553bdcfc80c178a58247f42fb...12fc37a3c0a4dda553bdcfc80c178a58247f42fb#hash</a><br/>
+com 88fc37a3c0a4dda553bdcfc80c178a58247f42fb...12fc37a3c0a4dda553bdcfc80c178a58247f42fb pare<br/>
+<a href="https://example.com/user/repo/commit/88fc37a3c0a4dda553bdcfc80c178a58247f42fb" rel="nofollow">https://example.com/user/repo/commit/88fc37a3c0a4dda553bdcfc80c178a58247f42fb</a><br/>
+com 88fc37a3c0a4dda553bdcfc80c178a58247f42fb mit<br/>
+<span class="emoji" aria-label="thumbs up">👍</span><br/>
+<a href="mailto:mail@domain.com" rel="nofollow">mail@domain.com</a><br/>
+@mention-user test<br/>
+#123<br/>
+space</p>
+`,
+		},
+		{ // 2
+			Links: markup.Links{
+				Base: "https://gitea.io/",
+			},
+			IsWiki: false,
+			Expected: `<p>space @mention-user<br/>
+/just/a/path.bin<br/>
+<a href="https://example.com/file.bin" rel="nofollow">https://example.com/file.bin</a><br/>
+<a href="https://gitea.io/file.bin" rel="nofollow">local link</a><br/>
+<a href="https://example.com" rel="nofollow">remote link</a><br/>
+<a href="https://gitea.io/src/file.bin" rel="nofollow">local link</a><br/>
+<a href="https://example.com" rel="nofollow">remote link</a><br/>
+<a href="https://gitea.io/image.jpg" target="_blank" rel="nofollow noopener"><img src="https://gitea.io/image.jpg" alt="local image"/></a><br/>
+<a href="https://gitea.io/path/file" target="_blank" rel="nofollow noopener"><img src="https://gitea.io/path/file" alt="local image"/></a><br/>
+<a href="https://gitea.io/path/file" target="_blank" rel="nofollow noopener"><img src="https://gitea.io/path/file" alt="local image"/></a><br/>
+<a href="https://example.com/image.jpg" target="_blank" rel="nofollow noopener"><img src="https://example.com/image.jpg" alt="remote image"/></a><br/>
+<a href="https://gitea.io/image.jpg" rel="nofollow"><img src="https://gitea.io/image.jpg" title="local image" alt="local image"/></a><br/>
+<a href="https://example.com/image.jpg" rel="nofollow"><img src="https://example.com/image.jpg" title="remote link" alt="remote link"/></a><br/>
+<a href="https://example.com/user/repo/compare/88fc37a3c0a4dda553bdcfc80c178a58247f42fb...12fc37a3c0a4dda553bdcfc80c178a58247f42fb#hash" rel="nofollow">https://example.com/user/repo/compare/88fc37a3c0a4dda553bdcfc80c178a58247f42fb...12fc37a3c0a4dda553bdcfc80c178a58247f42fb#hash</a><br/>
+com 88fc37a3c0a4dda553bdcfc80c178a58247f42fb...12fc37a3c0a4dda553bdcfc80c178a58247f42fb pare<br/>
+<a href="https://example.com/user/repo/commit/88fc37a3c0a4dda553bdcfc80c178a58247f42fb" rel="nofollow">https://example.com/user/repo/commit/88fc37a3c0a4dda553bdcfc80c178a58247f42fb</a><br/>
+com 88fc37a3c0a4dda553bdcfc80c178a58247f42fb mit<br/>
+<span class="emoji" aria-label="thumbs up">👍</span><br/>
+<a href="mailto:mail@domain.com" rel="nofollow">mail@domain.com</a><br/>
+@mention-user test<br/>
+#123<br/>
+space</p>
+`,
+		},
+		{ // 3
+			Links: markup.Links{
+				Base: "https://gitea.io/",
+			},
+			IsWiki: true,
+			Expected: `<p>space @mention-user<br/>
+/just/a/path.bin<br/>
+<a href="https://example.com/file.bin" rel="nofollow">https://example.com/file.bin</a><br/>
+<a href="https://gitea.io/wiki/file.bin" rel="nofollow">local link</a><br/>
+<a href="https://example.com" rel="nofollow">remote link</a><br/>
+<a href="https://gitea.io/wiki/file.bin" rel="nofollow">local link</a><br/>
+<a href="https://example.com" rel="nofollow">remote link</a><br/>
+<a href="https://gitea.io/wiki/raw/image.jpg" target="_blank" rel="nofollow noopener"><img src="https://gitea.io/wiki/raw/image.jpg" alt="local image"/></a><br/>
+<a href="https://gitea.io/wiki/raw/path/file" target="_blank" rel="nofollow noopener"><img src="https://gitea.io/wiki/raw/path/file" alt="local image"/></a><br/>
+<a href="https://gitea.io/wiki/raw/path/file" target="_blank" rel="nofollow noopener"><img src="https://gitea.io/wiki/raw/path/file" alt="local image"/></a><br/>
+<a href="https://example.com/image.jpg" target="_blank" rel="nofollow noopener"><img src="https://example.com/image.jpg" alt="remote image"/></a><br/>
+<a href="https://gitea.io/wiki/raw/image.jpg" rel="nofollow"><img src="https://gitea.io/wiki/raw/image.jpg" title="local image" alt="local image"/></a><br/>
+<a href="https://example.com/image.jpg" rel="nofollow"><img src="https://example.com/image.jpg" title="remote link" alt="remote link"/></a><br/>
+<a href="https://example.com/user/repo/compare/88fc37a3c0a4dda553bdcfc80c178a58247f42fb...12fc37a3c0a4dda553bdcfc80c178a58247f42fb#hash" rel="nofollow">https://example.com/user/repo/compare/88fc37a3c0a4dda553bdcfc80c178a58247f42fb...12fc37a3c0a4dda553bdcfc80c178a58247f42fb#hash</a><br/>
+com 88fc37a3c0a4dda553bdcfc80c178a58247f42fb...12fc37a3c0a4dda553bdcfc80c178a58247f42fb pare<br/>
+<a href="https://example.com/user/repo/commit/88fc37a3c0a4dda553bdcfc80c178a58247f42fb" rel="nofollow">https://example.com/user/repo/commit/88fc37a3c0a4dda553bdcfc80c178a58247f42fb</a><br/>
+com 88fc37a3c0a4dda553bdcfc80c178a58247f42fb mit<br/>
+<span class="emoji" aria-label="thumbs up">👍</span><br/>
+<a href="mailto:mail@domain.com" rel="nofollow">mail@domain.com</a><br/>
+@mention-user test<br/>
+#123<br/>
+space</p>
+`,
+		},
+		{ // 4
+			Links: markup.Links{
+				Base: "/relative/path",
+			},
+			IsWiki: false,
+			Expected: `<p>space @mention-user<br/>
+/just/a/path.bin<br/>
+<a href="https://example.com/file.bin" rel="nofollow">https://example.com/file.bin</a><br/>
+<a href="/relative/path/file.bin" rel="nofollow">local link</a><br/>
+<a href="https://example.com" rel="nofollow">remote link</a><br/>
+<a href="/relative/path/src/file.bin" rel="nofollow">local link</a><br/>
+<a href="https://example.com" rel="nofollow">remote link</a><br/>
+<a href="/relative/path/image.jpg" target="_blank" rel="nofollow noopener"><img src="/relative/path/image.jpg" alt="local image"/></a><br/>
+<a href="/relative/path/path/file" target="_blank" rel="nofollow noopener"><img src="/relative/path/path/file" alt="local image"/></a><br/>
+<a href="/relative/path/path/file" target="_blank" rel="nofollow noopener"><img src="/relative/path/path/file" alt="local image"/></a><br/>
+<a href="https://example.com/image.jpg" target="_blank" rel="nofollow noopener"><img src="https://example.com/image.jpg" alt="remote image"/></a><br/>
+<a href="/relative/path/image.jpg" rel="nofollow"><img src="/relative/path/image.jpg" title="local image" alt="local image"/></a><br/>
+<a href="https://example.com/image.jpg" rel="nofollow"><img src="https://example.com/image.jpg" title="remote link" alt="remote link"/></a><br/>
+<a href="https://example.com/user/repo/compare/88fc37a3c0a4dda553bdcfc80c178a58247f42fb...12fc37a3c0a4dda553bdcfc80c178a58247f42fb#hash" rel="nofollow">https://example.com/user/repo/compare/88fc37a3c0a4dda553bdcfc80c178a58247f42fb...12fc37a3c0a4dda553bdcfc80c178a58247f42fb#hash</a><br/>
+com 88fc37a3c0a4dda553bdcfc80c178a58247f42fb...12fc37a3c0a4dda553bdcfc80c178a58247f42fb pare<br/>
+<a href="https://example.com/user/repo/commit/88fc37a3c0a4dda553bdcfc80c178a58247f42fb" rel="nofollow">https://example.com/user/repo/commit/88fc37a3c0a4dda553bdcfc80c178a58247f42fb</a><br/>
+com 88fc37a3c0a4dda553bdcfc80c178a58247f42fb mit<br/>
+<span class="emoji" aria-label="thumbs up">👍</span><br/>
+<a href="mailto:mail@domain.com" rel="nofollow">mail@domain.com</a><br/>
+@mention-user test<br/>
+#123<br/>
+space</p>
+`,
+		},
+		{ // 5
+			Links: markup.Links{
+				Base: "/relative/path",
+			},
+			IsWiki: true,
+			Expected: `<p>space @mention-user<br/>
+/just/a/path.bin<br/>
+<a href="https://example.com/file.bin" rel="nofollow">https://example.com/file.bin</a><br/>
+<a href="/relative/path/wiki/file.bin" rel="nofollow">local link</a><br/>
+<a href="https://example.com" rel="nofollow">remote link</a><br/>
+<a href="/relative/path/wiki/file.bin" rel="nofollow">local link</a><br/>
+<a href="https://example.com" rel="nofollow">remote link</a><br/>
+<a href="/relative/path/wiki/raw/image.jpg" target="_blank" rel="nofollow noopener"><img src="/relative/path/wiki/raw/image.jpg" alt="local image"/></a><br/>
+<a href="/relative/path/wiki/raw/path/file" target="_blank" rel="nofollow noopener"><img src="/relative/path/wiki/raw/path/file" alt="local image"/></a><br/>
+<a href="/relative/path/wiki/raw/path/file" target="_blank" rel="nofollow noopener"><img src="/relative/path/wiki/raw/path/file" alt="local image"/></a><br/>
+<a href="https://example.com/image.jpg" target="_blank" rel="nofollow noopener"><img src="https://example.com/image.jpg" alt="remote image"/></a><br/>
+<a href="/relative/path/wiki/raw/image.jpg" rel="nofollow"><img src="/relative/path/wiki/raw/image.jpg" title="local image" alt="local image"/></a><br/>
+<a href="https://example.com/image.jpg" rel="nofollow"><img src="https://example.com/image.jpg" title="remote link" alt="remote link"/></a><br/>
+<a href="https://example.com/user/repo/compare/88fc37a3c0a4dda553bdcfc80c178a58247f42fb...12fc37a3c0a4dda553bdcfc80c178a58247f42fb#hash" rel="nofollow">https://example.com/user/repo/compare/88fc37a3c0a4dda553bdcfc80c178a58247f42fb...12fc37a3c0a4dda553bdcfc80c178a58247f42fb#hash</a><br/>
+com 88fc37a3c0a4dda553bdcfc80c178a58247f42fb...12fc37a3c0a4dda553bdcfc80c178a58247f42fb pare<br/>
+<a href="https://example.com/user/repo/commit/88fc37a3c0a4dda553bdcfc80c178a58247f42fb" rel="nofollow">https://example.com/user/repo/commit/88fc37a3c0a4dda553bdcfc80c178a58247f42fb</a><br/>
+com 88fc37a3c0a4dda553bdcfc80c178a58247f42fb mit<br/>
+<span class="emoji" aria-label="thumbs up">👍</span><br/>
+<a href="mailto:mail@domain.com" rel="nofollow">mail@domain.com</a><br/>
+@mention-user test<br/>
+#123<br/>
+space</p>
+`,
+		},
+		{ // 6
+			Links: markup.Links{
+				Base:       "/user/repo",
+				BranchPath: "branch/main",
+			},
+			IsWiki: false,
+			Expected: `<p>space @mention-user<br/>
+/just/a/path.bin<br/>
+<a href="https://example.com/file.bin" rel="nofollow">https://example.com/file.bin</a><br/>
+<a href="/user/repo/src/branch/main/file.bin" rel="nofollow">local link</a><br/>
+<a href="https://example.com" rel="nofollow">remote link</a><br/>
+<a href="/user/repo/src/branch/main/file.bin" rel="nofollow">local link</a><br/>
+<a href="https://example.com" rel="nofollow">remote link</a><br/>
+<a href="/user/repo/media/branch/main/image.jpg" target="_blank" rel="nofollow noopener"><img src="/user/repo/media/branch/main/image.jpg" alt="local image"/></a><br/>
+<a href="/user/repo/media/branch/main/path/file" target="_blank" rel="nofollow noopener"><img src="/user/repo/media/branch/main/path/file" alt="local image"/></a><br/>
+<a href="/user/repo/media/branch/main/path/file" target="_blank" rel="nofollow noopener"><img src="/user/repo/media/branch/main/path/file" alt="local image"/></a><br/>
+<a href="https://example.com/image.jpg" target="_blank" rel="nofollow noopener"><img src="https://example.com/image.jpg" alt="remote image"/></a><br/>
+<a href="/user/repo/media/branch/main/image.jpg" rel="nofollow"><img src="/user/repo/media/branch/main/image.jpg" title="local image" alt="local image"/></a><br/>
+<a href="https://example.com/image.jpg" rel="nofollow"><img src="https://example.com/image.jpg" title="remote link" alt="remote link"/></a><br/>
+<a href="https://example.com/user/repo/compare/88fc37a3c0a4dda553bdcfc80c178a58247f42fb...12fc37a3c0a4dda553bdcfc80c178a58247f42fb#hash" rel="nofollow">https://example.com/user/repo/compare/88fc37a3c0a4dda553bdcfc80c178a58247f42fb...12fc37a3c0a4dda553bdcfc80c178a58247f42fb#hash</a><br/>
+com 88fc37a3c0a4dda553bdcfc80c178a58247f42fb...12fc37a3c0a4dda553bdcfc80c178a58247f42fb pare<br/>
+<a href="https://example.com/user/repo/commit/88fc37a3c0a4dda553bdcfc80c178a58247f42fb" rel="nofollow">https://example.com/user/repo/commit/88fc37a3c0a4dda553bdcfc80c178a58247f42fb</a><br/>
+com 88fc37a3c0a4dda553bdcfc80c178a58247f42fb mit<br/>
+<span class="emoji" aria-label="thumbs up">👍</span><br/>
+<a href="mailto:mail@domain.com" rel="nofollow">mail@domain.com</a><br/>
+@mention-user test<br/>
+#123<br/>
+space</p>
+`,
+		},
+		{ // 7
+			Links: markup.Links{
+				Base:       "/relative/path",
+				BranchPath: "branch/main",
+			},
+			IsWiki: true,
+			Expected: `<p>space @mention-user<br/>
+/just/a/path.bin<br/>
+<a href="https://example.com/file.bin" rel="nofollow">https://example.com/file.bin</a><br/>
+<a href="/relative/path/wiki/file.bin" rel="nofollow">local link</a><br/>
+<a href="https://example.com" rel="nofollow">remote link</a><br/>
+<a href="/relative/path/wiki/file.bin" rel="nofollow">local link</a><br/>
+<a href="https://example.com" rel="nofollow">remote link</a><br/>
+<a href="/relative/path/wiki/raw/image.jpg" target="_blank" rel="nofollow noopener"><img src="/relative/path/wiki/raw/image.jpg" alt="local image"/></a><br/>
+<a href="/relative/path/wiki/raw/path/file" target="_blank" rel="nofollow noopener"><img src="/relative/path/wiki/raw/path/file" alt="local image"/></a><br/>
+<a href="/relative/path/wiki/raw/path/file" target="_blank" rel="nofollow noopener"><img src="/relative/path/wiki/raw/path/file" alt="local image"/></a><br/>
+<a href="https://example.com/image.jpg" target="_blank" rel="nofollow noopener"><img src="https://example.com/image.jpg" alt="remote image"/></a><br/>
+<a href="/relative/path/wiki/raw/image.jpg" rel="nofollow"><img src="/relative/path/wiki/raw/image.jpg" title="local image" alt="local image"/></a><br/>
+<a href="https://example.com/image.jpg" rel="nofollow"><img src="https://example.com/image.jpg" title="remote link" alt="remote link"/></a><br/>
+<a href="https://example.com/user/repo/compare/88fc37a3c0a4dda553bdcfc80c178a58247f42fb...12fc37a3c0a4dda553bdcfc80c178a58247f42fb#hash" rel="nofollow">https://example.com/user/repo/compare/88fc37a3c0a4dda553bdcfc80c178a58247f42fb...12fc37a3c0a4dda553bdcfc80c178a58247f42fb#hash</a><br/>
+com 88fc37a3c0a4dda553bdcfc80c178a58247f42fb...12fc37a3c0a4dda553bdcfc80c178a58247f42fb pare<br/>
+<a href="https://example.com/user/repo/commit/88fc37a3c0a4dda553bdcfc80c178a58247f42fb" rel="nofollow">https://example.com/user/repo/commit/88fc37a3c0a4dda553bdcfc80c178a58247f42fb</a><br/>
+com 88fc37a3c0a4dda553bdcfc80c178a58247f42fb mit<br/>
+<span class="emoji" aria-label="thumbs up">👍</span><br/>
+<a href="mailto:mail@domain.com" rel="nofollow">mail@domain.com</a><br/>
+@mention-user test<br/>
+#123<br/>
+space</p>
+`,
+		},
+		{ // 8
+			Links: markup.Links{
+				Base:     "/user/repo",
+				TreePath: "sub/folder",
+			},
+			IsWiki: false,
+			Expected: `<p>space @mention-user<br/>
+/just/a/path.bin<br/>
+<a href="https://example.com/file.bin" rel="nofollow">https://example.com/file.bin</a><br/>
+<a href="/user/repo/file.bin" rel="nofollow">local link</a><br/>
+<a href="https://example.com" rel="nofollow">remote link</a><br/>
+<a href="/user/repo/src/sub/folder/file.bin" rel="nofollow">local link</a><br/>
+<a href="https://example.com" rel="nofollow">remote link</a><br/>
+<a href="/user/repo/image.jpg" target="_blank" rel="nofollow noopener"><img src="/user/repo/image.jpg" alt="local image"/></a><br/>
+<a href="/user/repo/path/file" target="_blank" rel="nofollow noopener"><img src="/user/repo/path/file" alt="local image"/></a><br/>
+<a href="/user/repo/path/file" target="_blank" rel="nofollow noopener"><img src="/user/repo/path/file" alt="local image"/></a><br/>
+<a href="https://example.com/image.jpg" target="_blank" rel="nofollow noopener"><img src="https://example.com/image.jpg" alt="remote image"/></a><br/>
+<a href="/user/repo/image.jpg" rel="nofollow"><img src="/user/repo/image.jpg" title="local image" alt="local image"/></a><br/>
+<a href="https://example.com/image.jpg" rel="nofollow"><img src="https://example.com/image.jpg" title="remote link" alt="remote link"/></a><br/>
+<a href="https://example.com/user/repo/compare/88fc37a3c0a4dda553bdcfc80c178a58247f42fb...12fc37a3c0a4dda553bdcfc80c178a58247f42fb#hash" rel="nofollow">https://example.com/user/repo/compare/88fc37a3c0a4dda553bdcfc80c178a58247f42fb...12fc37a3c0a4dda553bdcfc80c178a58247f42fb#hash</a><br/>
+com 88fc37a3c0a4dda553bdcfc80c178a58247f42fb...12fc37a3c0a4dda553bdcfc80c178a58247f42fb pare<br/>
+<a href="https://example.com/user/repo/commit/88fc37a3c0a4dda553bdcfc80c178a58247f42fb" rel="nofollow">https://example.com/user/repo/commit/88fc37a3c0a4dda553bdcfc80c178a58247f42fb</a><br/>
+com 88fc37a3c0a4dda553bdcfc80c178a58247f42fb mit<br/>
+<span class="emoji" aria-label="thumbs up">👍</span><br/>
+<a href="mailto:mail@domain.com" rel="nofollow">mail@domain.com</a><br/>
+@mention-user test<br/>
+#123<br/>
+space</p>
+`,
+		},
+		{ // 9
+			Links: markup.Links{
+				Base:     "/relative/path",
+				TreePath: "sub/folder",
+			},
+			IsWiki: true,
+			Expected: `<p>space @mention-user<br/>
+/just/a/path.bin<br/>
+<a href="https://example.com/file.bin" rel="nofollow">https://example.com/file.bin</a><br/>
+<a href="/relative/path/wiki/file.bin" rel="nofollow">local link</a><br/>
+<a href="https://example.com" rel="nofollow">remote link</a><br/>
+<a href="/relative/path/wiki/file.bin" rel="nofollow">local link</a><br/>
+<a href="https://example.com" rel="nofollow">remote link</a><br/>
+<a href="/relative/path/wiki/raw/image.jpg" target="_blank" rel="nofollow noopener"><img src="/relative/path/wiki/raw/image.jpg" alt="local image"/></a><br/>
+<a href="/relative/path/wiki/raw/path/file" target="_blank" rel="nofollow noopener"><img src="/relative/path/wiki/raw/path/file" alt="local image"/></a><br/>
+<a href="/relative/path/wiki/raw/path/file" target="_blank" rel="nofollow noopener"><img src="/relative/path/wiki/raw/path/file" alt="local image"/></a><br/>
+<a href="https://example.com/image.jpg" target="_blank" rel="nofollow noopener"><img src="https://example.com/image.jpg" alt="remote image"/></a><br/>
+<a href="/relative/path/wiki/raw/image.jpg" rel="nofollow"><img src="/relative/path/wiki/raw/image.jpg" title="local image" alt="local image"/></a><br/>
+<a href="https://example.com/image.jpg" rel="nofollow"><img src="https://example.com/image.jpg" title="remote link" alt="remote link"/></a><br/>
+<a href="https://example.com/user/repo/compare/88fc37a3c0a4dda553bdcfc80c178a58247f42fb...12fc37a3c0a4dda553bdcfc80c178a58247f42fb#hash" rel="nofollow">https://example.com/user/repo/compare/88fc37a3c0a4dda553bdcfc80c178a58247f42fb...12fc37a3c0a4dda553bdcfc80c178a58247f42fb#hash</a><br/>
+com 88fc37a3c0a4dda553bdcfc80c178a58247f42fb...12fc37a3c0a4dda553bdcfc80c178a58247f42fb pare<br/>
+<a href="https://example.com/user/repo/commit/88fc37a3c0a4dda553bdcfc80c178a58247f42fb" rel="nofollow">https://example.com/user/repo/commit/88fc37a3c0a4dda553bdcfc80c178a58247f42fb</a><br/>
+com 88fc37a3c0a4dda553bdcfc80c178a58247f42fb mit<br/>
+<span class="emoji" aria-label="thumbs up">👍</span><br/>
+<a href="mailto:mail@domain.com" rel="nofollow">mail@domain.com</a><br/>
+@mention-user test<br/>
+#123<br/>
+space</p>
+`,
+		},
+		{ // 10
+			Links: markup.Links{
+				Base:       "/user/repo",
+				BranchPath: "branch/main",
+				TreePath:   "sub/folder",
+			},
+			IsWiki: false,
+			Expected: `<p>space @mention-user<br/>
+/just/a/path.bin<br/>
+<a href="https://example.com/file.bin" rel="nofollow">https://example.com/file.bin</a><br/>
+<a href="/user/repo/src/branch/main/sub/folder/file.bin" rel="nofollow">local link</a><br/>
+<a href="https://example.com" rel="nofollow">remote link</a><br/>
+<a href="/user/repo/src/branch/main/sub/folder/file.bin" rel="nofollow">local link</a><br/>
+<a href="https://example.com" rel="nofollow">remote link</a><br/>
+<a href="/user/repo/media/branch/main/sub/folder/image.jpg" target="_blank" rel="nofollow noopener"><img src="/user/repo/media/branch/main/sub/folder/image.jpg" alt="local image"/></a><br/>
+<a href="/user/repo/media/branch/main/sub/folder/path/file" target="_blank" rel="nofollow noopener"><img src="/user/repo/media/branch/main/sub/folder/path/file" alt="local image"/></a><br/>
+<a href="/user/repo/media/branch/main/sub/folder/path/file" target="_blank" rel="nofollow noopener"><img src="/user/repo/media/branch/main/sub/folder/path/file" alt="local image"/></a><br/>
+<a href="https://example.com/image.jpg" target="_blank" rel="nofollow noopener"><img src="https://example.com/image.jpg" alt="remote image"/></a><br/>
+<a href="/user/repo/media/branch/main/sub/folder/image.jpg" rel="nofollow"><img src="/user/repo/media/branch/main/sub/folder/image.jpg" title="local image" alt="local image"/></a><br/>
+<a href="https://example.com/image.jpg" rel="nofollow"><img src="https://example.com/image.jpg" title="remote link" alt="remote link"/></a><br/>
+<a href="https://example.com/user/repo/compare/88fc37a3c0a4dda553bdcfc80c178a58247f42fb...12fc37a3c0a4dda553bdcfc80c178a58247f42fb#hash" rel="nofollow">https://example.com/user/repo/compare/88fc37a3c0a4dda553bdcfc80c178a58247f42fb...12fc37a3c0a4dda553bdcfc80c178a58247f42fb#hash</a><br/>
+com 88fc37a3c0a4dda553bdcfc80c178a58247f42fb...12fc37a3c0a4dda553bdcfc80c178a58247f42fb pare<br/>
+<a href="https://example.com/user/repo/commit/88fc37a3c0a4dda553bdcfc80c178a58247f42fb" rel="nofollow">https://example.com/user/repo/commit/88fc37a3c0a4dda553bdcfc80c178a58247f42fb</a><br/>
+com 88fc37a3c0a4dda553bdcfc80c178a58247f42fb mit<br/>
+<span class="emoji" aria-label="thumbs up">👍</span><br/>
+<a href="mailto:mail@domain.com" rel="nofollow">mail@domain.com</a><br/>
+@mention-user test<br/>
+#123<br/>
+space</p>
+`,
+		},
+		{ // 11
+			Links: markup.Links{
+				Base:       "/relative/path",
+				BranchPath: "branch/main",
+				TreePath:   "sub/folder",
+			},
+			IsWiki: true,
+			Expected: `<p>space @mention-user<br/>
+/just/a/path.bin<br/>
+<a href="https://example.com/file.bin" rel="nofollow">https://example.com/file.bin</a><br/>
+<a href="/relative/path/wiki/file.bin" rel="nofollow">local link</a><br/>
+<a href="https://example.com" rel="nofollow">remote link</a><br/>
+<a href="/relative/path/wiki/file.bin" rel="nofollow">local link</a><br/>
+<a href="https://example.com" rel="nofollow">remote link</a><br/>
+<a href="/relative/path/wiki/raw/image.jpg" target="_blank" rel="nofollow noopener"><img src="/relative/path/wiki/raw/image.jpg" alt="local image"/></a><br/>
+<a href="/relative/path/wiki/raw/path/file" target="_blank" rel="nofollow noopener"><img src="/relative/path/wiki/raw/path/file" alt="local image"/></a><br/>
+<a href="/relative/path/wiki/raw/path/file" target="_blank" rel="nofollow noopener"><img src="/relative/path/wiki/raw/path/file" alt="local image"/></a><br/>
+<a href="https://example.com/image.jpg" target="_blank" rel="nofollow noopener"><img src="https://example.com/image.jpg" alt="remote image"/></a><br/>
+<a href="/relative/path/wiki/raw/image.jpg" rel="nofollow"><img src="/relative/path/wiki/raw/image.jpg" title="local image" alt="local image"/></a><br/>
+<a href="https://example.com/image.jpg" rel="nofollow"><img src="https://example.com/image.jpg" title="remote link" alt="remote link"/></a><br/>
+<a href="https://example.com/user/repo/compare/88fc37a3c0a4dda553bdcfc80c178a58247f42fb...12fc37a3c0a4dda553bdcfc80c178a58247f42fb#hash" rel="nofollow">https://example.com/user/repo/compare/88fc37a3c0a4dda553bdcfc80c178a58247f42fb...12fc37a3c0a4dda553bdcfc80c178a58247f42fb#hash</a><br/>
+com 88fc37a3c0a4dda553bdcfc80c178a58247f42fb...12fc37a3c0a4dda553bdcfc80c178a58247f42fb pare<br/>
+<a href="https://example.com/user/repo/commit/88fc37a3c0a4dda553bdcfc80c178a58247f42fb" rel="nofollow">https://example.com/user/repo/commit/88fc37a3c0a4dda553bdcfc80c178a58247f42fb</a><br/>
+com 88fc37a3c0a4dda553bdcfc80c178a58247f42fb mit<br/>
+<span class="emoji" aria-label="thumbs up">👍</span><br/>
+<a href="mailto:mail@domain.com" rel="nofollow">mail@domain.com</a><br/>
+@mention-user test<br/>
+#123<br/>
+space</p>
+`,
+		},
+	}
+
+	for i, c := range cases {
+		result, err := markdown.RenderString(&markup.RenderContext{Ctx: context.Background(), Links: c.Links, IsWiki: c.IsWiki}, input)
+		require.NoError(t, err, "Unexpected error in testcase: %v", i)
+		assert.Equal(t, template.HTML(c.Expected), result, "Unexpected result in testcase %v", i)
+	}
+}
+
+func TestCustomMarkdownURL(t *testing.T) {
+	defer test.MockVariableValue(&setting.Markdown.CustomURLSchemes, []string{"abp"})()
+	setting.AppURL = AppURL
+
+	test := func(input, expected string) {
+		buffer, err := markdown.RenderString(&markup.RenderContext{
+			Ctx: git.DefaultContext,
+			Links: markup.Links{
+				Base:       FullURL,
+				BranchPath: "branch/main",
+			},
+		}, input)
+		require.NoError(t, err)
+		assert.Equal(t, strings.TrimSpace(expected), strings.TrimSpace(string(buffer)))
+	}
+
+	test("[test](abp:subscribe?location=https://codeberg.org/filters.txt&amp;title=joy)",
+		`<p><a href="abp:subscribe?location=https://codeberg.org/filters.txt&amp;title=joy" rel="nofollow">test</a></p>`)
+
+	// Ensure that the schema itself without `:` is still made absolute.
+	test("[test](abp)",
+		`<p><a href="http://localhost:3000/gogits/gogs/src/branch/main/abp" rel="nofollow">test</a></p>`)
+}
+
+func TestYAMLMeta(t *testing.T) {
+	setting.AppURL = AppURL
+
+	test := func(input, expected string) {
+		buffer, err := markdown.RenderString(&markup.RenderContext{
+			Ctx: git.DefaultContext,
+		}, input)
+		require.NoError(t, err)
+		assert.Equal(t, strings.TrimSpace(expected), strings.TrimSpace(string(buffer)))
+	}
+
+	test(`---
+include_toc: true
+---
+## Header`,
+		`<details><summary><i class="icon table"></i></summary><table>
+<thead>
+<tr>
+<th>include_toc</th>
+</tr>
+</thead>
+<tbody>
+<tr>
+<td>true</td>
+</tr>
+</tbody>
+</table>
+</details><details><summary>toc</summary><ul>
+<li>
+<a href="#user-content-header" rel="nofollow">Header</a></li>
+</ul>
+</details><h2 id="user-content-header">Header</h2>`)
+
+	test(`---
+key: value
+---`,
+		`<details><summary><i class="icon table"></i></summary><table>
+<thead>
+<tr>
+<th>key</th>
+</tr>
+</thead>
+<tbody>
+<tr>
+<td>value</td>
+</tr>
+</tbody>
+</table>
+</details>`)
+
+	test("---\n---\n",
+		`<hr/>
+<hr/>`)
+
+	test(`---
+gitea:
+  details_icon: smiley
+  include_toc: true
+---
+# Another header`,
+		`<details><summary><i class="icon smiley"></i></summary><table>
+<thead>
+<tr>
+<th>gitea</th>
+</tr>
+</thead>
+<tbody>
+<tr>
+<td><table>
+<thead>
+<tr>
+<th>details_icon</th>
+<th>include_toc</th>
+</tr>
+</thead>
+<tbody>
+<tr>
+<td>smiley</td>
+<td>true</td>
+</tr>
+</tbody>
+</table>
+</td>
+</tr>
+</tbody>
+</table>
+</details><details><summary>toc</summary><ul>
+<li>
+<a href="#user-content-another-header" rel="nofollow">Another header</a></li>
+</ul>
+</details><h1 id="user-content-another-header">Another header</h1>`)
+
+	test(`---
+gitea:
+  meta: table
+key: value
+---`, `<table>
+<thead>
+<tr>
+<th>gitea</th>
+<th>key</th>
+</tr>
+</thead>
+<tbody>
+<tr>
+<td><table>
+<thead>
+<tr>
+<th>meta</th>
+</tr>
+</thead>
+<tbody>
+<tr>
+<td>table</td>
+</tr>
+</tbody>
+</table>
+</td>
+<td>value</td>
+</tr>
+</tbody>
+</table>`)
+}
+
+func TestCallout(t *testing.T) {
+	setting.AppURL = AppURL
+
+	test := func(input, expected string) {
+		buffer, err := markdown.RenderString(&markup.RenderContext{
+			Ctx: git.DefaultContext,
+		}, input)
+		require.NoError(t, err)
+		assert.Equal(t, strings.TrimSpace(expected), strings.TrimSpace(string(buffer)))
+	}
+
+	test(">\n0", "<blockquote>\n</blockquote>\n<p>0</p>")
+	test("> **Warning**\n> Bad stuff is brewing here", `<blockquote class="attention-header attention-warning"><p class="attention-title"><strong class="attention-warning">Warning</strong></p>
+<p>Bad stuff is brewing here</p>
+</blockquote>`)
+	test("> [!WARNING]\n> Bad stuff is brewing here", `<blockquote class="attention-header attention-warning"><p class="attention-title"><strong class="attention-warning">Warning</strong></p>
+<p>Bad stuff is brewing here</p>
+</blockquote>`)
+}