From 4bba186b81146eb1791f56e3d1fbae2bf3e476ce Mon Sep 17 00:00:00 2001
From: mtail <mtail@google.com>
Date: Tue, 10 Jul 2018 12:15:21 -0700
Subject: [PATCH] Special case empty @@ in code blocks to be NOPs.

---
 layouts/shortcodes/text.html | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/layouts/shortcodes/text.html b/layouts/shortcodes/text.html
index e8e6412750..40f2368244 100644
--- a/layouts/shortcodes/text.html
+++ b/layouts/shortcodes/text.html
@@ -52,6 +52,9 @@ be invalid HTML
 {{ $branch := .Site.Data.args.branch_name }}
 {{ $links := findRE "@(.*?)@" ($scratch.Get "text") }}
 {{ range $link := $links }}
-{{ $href := printf "https://raw.githubusercontent.com/istio/istio/%s/%s" $branch (trim $link "@") }}
+{{ $target := trim $link "@" }}
+{{ if gt (len $target) 0 }}
+{{ $href := printf "https://raw.githubusercontent.com/istio/istio/%s/%s" $branch $target }}
 <a hidden style="display:none" href="{{ $href }}"></a>
 {{ end }}
+{{ end }}