red: sub speedup

hugeping · Nov 14, 2023 · 07d724a · 07d724a
1 parent b8b0f27
commit 07d724a
Showing 1 changed file with 3 additions and 3 deletions.
diff --git a/data/lib/red/proc.lua b/data/lib/red/proc.lua
@@ -163,12 +163,12 @@ function proc.sub(w, text, glob)
     if not b then
       return text:findln(a)
     end
-    local t = ''
+    local t = {}
     for l in text:lines(true) do
       l = l:gsub(a, b)
-      t = t .. l
+      table.insert(t, l)
     end
-    return t
+    return table.concat(t, '')
   end, a[1], a[2])
 end