helpers: Use net/url for URL parsing in AbsURL

Fixes #2112

2 files changed, 8 insertions, 1 deletions

diff --git a/helpers/url.go b/helpers/url.go
index 9d3db8004..00bcd67c9 100644
--- a/helpers/url.go
+++ b/helpers/url.go
@@ -148,7 +148,12 @@ func MakePermalink(host, plink string) *url.URL {
 
 // AbsURL creates a absolute URL from the relative path given and the BaseURL set in config.
 func AbsURL(path string) string {
-	if strings.HasPrefix(path, "http") || strings.HasPrefix(path, "//") {
+	url, err := url.Parse(path)
+	if err != nil {
+		return path
+	}
+
+	if url.IsAbs() || strings.HasPrefix(path, "//") {
 		return path
 	}
 
diff --git a/helpers/url_test.go b/helpers/url_test.go
index 4774accbb..fd8cd5137 100644
--- a/helpers/url_test.go
+++ b/helpers/url_test.go
@@ -52,9 +52,11 @@ func TestAbsURL(t *testing.T) {
 		{"", "http://base/ace/", "http://base/ace/"},
 		{"/test/2/foo/", "http://base", "http://base/test/2/foo/"},
 		{"http://abs", "http://base/", "http://abs"},
+		{"schema://abs", "http://base/", "schema://abs"},
 		{"//schemaless", "http://base/", "//schemaless"},
 		{"test/2/foo/", "http://base/path", "http://base/path/test/2/foo/"},
 		{"/test/2/foo/", "http://base/path", "http://base/test/2/foo/"},
+		{"http//foo", "http://base/path", "http://base/path/http/foo"},
 	}
 
 	for _, test := range tests {