From 056b8f5b52fc0e9ab32f99c016e1ee28975c4bcd Mon Sep 17 00:00:00 2001
From: Jimmy Praet <jimmy.praet@ksz-bcss.fgov.be>
Date: Thu, 3 Dec 2020 11:50:47 +0100
Subject: [PATCH] Clickable links in pull request (and issue) titles (#13695)

* clickable links in pull request (and issue) titles #13658

reuses the existing logic to render clickable links in commit messages

* dedicated RenderIssueTitle function

applied patch from @mrsdizzie
---
 modules/markup/html.go               | 19 +++++++++++++++++++
 modules/templates/helper.go          | 11 +++++++++++
 templates/repo/issue/view_title.tmpl |  2 +-
 3 files changed, 31 insertions(+), 1 deletion(-)

diff --git a/modules/markup/html.go b/modules/markup/html.go
index f5f811b59b6..a6c6649cd35 100644
--- a/modules/markup/html.go
+++ b/modules/markup/html.go
@@ -268,6 +268,25 @@ func RenderCommitMessageSubject(
 	return ctx.postProcess(rawHTML)
 }
 
+// RenderIssueTitle to process title on individual issue/pull page
+func RenderIssueTitle(
+	rawHTML []byte,
+	urlPrefix string,
+	metas map[string]string,
+) ([]byte, error) {
+	ctx := &postProcessCtx{
+		metas:     metas,
+		urlPrefix: urlPrefix,
+		procs: []processor{
+			issueIndexPatternProcessor,
+			sha1CurrentPatternProcessor,
+			emojiShortCodeProcessor,
+			emojiProcessor,
+		},
+	}
+	return ctx.postProcess(rawHTML)
+}
+
 // RenderDescriptionHTML will use similar logic as PostProcess, but will
 // use a single special linkProcessor.
 func RenderDescriptionHTML(
diff --git a/modules/templates/helper.go b/modules/templates/helper.go
index bb7a3476f29..8b96397529b 100644
--- a/modules/templates/helper.go
+++ b/modules/templates/helper.go
@@ -154,6 +154,7 @@ func NewFuncMap() []template.FuncMap {
 		"RenderCommitMessageLink":        RenderCommitMessageLink,
 		"RenderCommitMessageLinkSubject": RenderCommitMessageLinkSubject,
 		"RenderCommitBody":               RenderCommitBody,
+		"RenderIssueTitle":               RenderIssueTitle,
 		"RenderEmoji":                    RenderEmoji,
 		"RenderEmojiPlain":               emoji.ReplaceAliases,
 		"ReactionToEmoji":                ReactionToEmoji,
@@ -630,6 +631,16 @@ func RenderCommitBody(msg, urlPrefix string, metas map[string]string) template.H
 	return template.HTML(renderedMessage)
 }
 
+// RenderIssueTitle renders issue/pull title with defined post processors
+func RenderIssueTitle(text, urlPrefix string, metas map[string]string) template.HTML {
+	renderedText, err := markup.RenderIssueTitle([]byte(template.HTMLEscapeString(text)), urlPrefix, metas)
+	if err != nil {
+		log.Error("RenderIssueTitle: %v", err)
+		return template.HTML("")
+	}
+	return template.HTML(renderedText)
+}
+
 // RenderEmoji renders html text with emoji post processors
 func RenderEmoji(text string) template.HTML {
 	renderedText, err := markup.RenderEmoji([]byte(template.HTMLEscapeString(text)))
diff --git a/templates/repo/issue/view_title.tmpl b/templates/repo/issue/view_title.tmpl
index e2a14502f46..0d594b3a5cd 100644
--- a/templates/repo/issue/view_title.tmpl
+++ b/templates/repo/issue/view_title.tmpl
@@ -6,7 +6,7 @@
 			</div>
 		{{end}}
 		<h1>
-			<span id="issue-title">{{RenderEmoji .Issue.Title}}</span>
+			<span id="issue-title">{{RenderIssueTitle .Issue.Title $.RepoLink $.Repository.ComposeMetas}}</span>
 			<span class="index">#{{.Issue.Index}}</span>
 			<div id="edit-title-input" class="ui input" style="display: none">
 				<input value="{{.Issue.Title}}" maxlength="255">