fix match URI

1 files changed, 2 insertions, 1 deletions

diff --git a/_extensions/ruc-play/semantic-markdown/semantic-markdown.lua b/_extensions/ruc-play/semantic-markdown/semantic-markdown.lua
index d0f68ab..6e21889 100644
--- a/_extensions/ruc-play/semantic-markdown/semantic-markdown.lua
+++ b/_extensions/ruc-play/semantic-markdown/semantic-markdown.lua
@@ -131,11 +131,12 @@ local function Namespaces(blocks)
     end
 
     -- namespace
+    local pattern = "^https?:"
     if blocks.content[3].t == "Str"
 
         -- TODO: maybe check case-insensitively
         -- TODO: relax to match URI syntax without hardcoded protocols
-      and blocks.content[3].text:match "^https?:"
+      and blocks.content[3].text:match(pattern)
     then
       -- FIXME: add CURIE and URI to metadata
       return {}