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Make markdown render match GitHub's behavior (#34129)

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For #2246
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wxiaoguang 2025-04-07 01:34:59 +08:00 committed by GitHub
parent 3fe082a5a3
commit bcc38eb35f
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2 changed files with 11 additions and 4 deletions
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3
modules/markup/html.go
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@ -85,7 +85,8 @@ var globalVars = sync.OnceValue(func() *globalVarsType {
// codePreviewPattern matches "http://domain/.../{owner}/{repo}/src/commit/{commit}/{filepath}#L10-L20"
v.codePreviewPattern = regexp.MustCompile(`https?://\S+/([^\s/]+)/([^\s/]+)/src/commit/([0-9a-f]{7,64})(/\S+)#(L\d+(-L\d+)?)`)
v.tagCleaner = regexp.MustCompile(`<((?:/?\w+/\w+)|(?:/[\w ]+/)|(/?[hH][tT][mM][lL]\b)|(/?[hH][eE][aA][dD]\b))`)
// cleans: "<foo/bar", "<any words/", ("<html", "<head", "<script", "<style")
v.tagCleaner = regexp.MustCompile(`(?i)<(/?\w+/\w+|/[\w ]+/|/?(html|head|script|style\b))`)
v.nulCleaner = strings.NewReplacer("\000", "")
return v
})

12
modules/markup/html_test.go
View File

@ -469,7 +469,7 @@ func Test_ParseClusterFuzz(t *testing.T) {
assert.NotContains(t, res.String(), "<html")
}
func TestPostProcess_RenderDocument(t *testing.T) {
func TestPostProcess(t *testing.T) {
setting.StaticURLPrefix = markup.TestAppURL // can't run standalone
defer testModule.MockVariableValue(&markup.RenderBehaviorForTesting.DisableAdditionalAttributes, true)()
@ -480,7 +480,7 @@ func TestPostProcess_RenderDocument(t *testing.T) {
assert.Equal(t, strings.TrimSpace(expected), strings.TrimSpace(res.String()))
}
// Issue index shouldn't be post processing in a document.
// Issue index shouldn't be post-processing in a document.
test(
"#1",
"#1")
@ -490,7 +490,7 @@ func TestPostProcess_RenderDocument(t *testing.T) {
"go-gitea/gitea#12345",
`<a href="/go-gitea/gitea/issues/12345" class="ref-issue">go-gitea/gitea#12345</a>`)
// Test that other post processing still works.
// Test that other post-processing still works.
test(
":gitea:",
`<span class="emoji" aria-label="gitea"><img alt=":gitea:" src="`+setting.StaticURLPrefix+`/assets/img/emoji/gitea.png"/></span>`)
@ -499,6 +499,12 @@ func TestPostProcess_RenderDocument(t *testing.T) {
`Some text with <span class="emoji" aria-label="grinning face with smiling eyes">😄</span> in the middle`)
test("http://localhost:3000/person/repo/issues/4#issuecomment-1234",
`<a href="http://localhost:3000/person/repo/issues/4#issuecomment-1234" class="ref-issue">person/repo#4 (comment)</a>`)
// special tags, GitHub's behavior, and for unclosed tags, output as text content as much as possible
test("<script>a", `&lt;script&gt;a`)
test("<script>a</script>", `&lt;script&gt;a&lt;/script&gt;`)
test("<STYLE>a", `&lt;STYLE&gt;a`)
test("<style>a</STYLE>", `&lt;style&gt;a&lt;/STYLE&gt;`)
}
func TestIssue16020(t *testing.T) {