From b0b1b76dc9c7edad15924785d01684e36f3e6cdb Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Bj=C3=B8rn=20Erik=20Pedersen?=
 <bjorn.erik.pedersen@gmail.com>
Date: Tue, 14 Mar 2023 12:45:09 +0100
Subject: markup/goldmark: Fail on invalid Markdown attributes

---
 common/herrors/error_locator.go | 10 ++++++++++
 common/herrors/file_error.go    | 14 ++++++++++++++
 2 files changed, 24 insertions(+)

(limited to 'common')

diff --git a/common/herrors/error_locator.go b/common/herrors/error_locator.go
index c7e2d2f06..7624bab98 100644
--- a/common/herrors/error_locator.go
+++ b/common/herrors/error_locator.go
@@ -61,6 +61,16 @@ var OffsetMatcher = func(m LineMatcher) int {
 	return -1
 }
 
+// ContainsMatcher is a line matcher that matches by line content.
+func ContainsMatcher(text string) func(m LineMatcher) int {
+	return func(m LineMatcher) int {
+		if idx := strings.Index(m.Line, text); idx != -1 {
+			return idx + 1
+		}
+		return -1
+	}
+}
+
 // ErrorContext contains contextual information about an error. This will
 // typically be the lines surrounding some problem in a file.
 type ErrorContext struct {
diff --git a/common/herrors/file_error.go b/common/herrors/file_error.go
index e6baaf6e3..9273b2a80 100644
--- a/common/herrors/file_error.go
+++ b/common/herrors/file_error.go
@@ -392,3 +392,17 @@ func extractPosition(e error) (pos text.Position) {
 	}
 	return
 }
+
+// TextSegmentError is an error with a text segment attached.
+type TextSegmentError struct {
+	Segment string
+	Err     error
+}
+
+func (e TextSegmentError) Unwrap() error {
+	return e.Err
+}
+
+func (e TextSegmentError) Error() string {
+	return e.Err.Error()
+}
-- 
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