From 3bbbb1a6825c5bcff2d4dfc41c1cebff83751498 Mon Sep 17 00:00:00 2001
From: Flaviu Tamas <tamasflaviu@gmail.com>
Date: Tue, 26 May 2015 20:29:12 -0400
Subject: [PATCH] Fix potential code bloat

---
 lib/impure/nre.nim | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/lib/impure/nre.nim b/lib/impure/nre.nim
index 6363f278ab..bfe2ad33ad 100644
--- a/lib/impure/nre.nim
+++ b/lib/impure/nre.nim
@@ -305,10 +305,11 @@ proc toTable*(pattern: CaptureBounds, default = none(Slice[int])):
 template itemsImpl(cond: bool): stmt {.immediate, dirty.} =
   for i in 0 .. <RegexMatch(pattern).pattern.captureCount:
     let nextVal = pattern[i]
-    if cond:
-      yield default
-    else:
-      yield nextVal
+    # done in this roundabout way to avoid multiple yields (potential code
+    # bloat)
+    let nextYieldVal = if cond: default else: nextVal
+    yield nextYieldVal
+
 
 iterator items*(pattern: CaptureBounds, default = none(Slice[int])): Option[Slice[int]] =
   itemsImpl(nextVal.isNone)