From 5375038d889aad2e5591c8d29fb0a9f6c580d640 Mon Sep 17 00:00:00 2001
From: Rendims <52757857+Rendims@users.noreply.github.com>
Date: Mon, 22 Jul 2019 21:35:01 +0200
Subject: [PATCH] string: avoid double allocation in trim_space()

---
 vlib/builtin/string.v | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/vlib/builtin/string.v b/vlib/builtin/string.v
index 4ae63877dd..f5788863ae 100644
--- a/vlib/builtin/string.v
+++ b/vlib/builtin/string.v
@@ -545,13 +545,12 @@ pub fn (s string) trim_space() string {
 	for i < s.len && is_space(s[i]) {
 		i++
 	}
-	mut res := s.right(i)
-	mut end := res.len - 1
-	for end >= 0 && is_space(res[end]) {
+	mut end := s.len - 1
+	for end >= 0 && is_space(s[end]) {
 		// C.printf('end=%d c=%d %c\n', end, res.str[end])
 		end--
 	}
-	res = res.left(end + 1)
+	res := s.substr(i, end + 1)
 	// println('after SPACE "$res"')
 	return res
 }