# HG changeset patch
# User Yuya Nishihara <yuya@tcha.org>
# Date 1545138736 -32400
# Node ID 247f51cfc66820eaf48a495729c52a4e21a527ca
# Parent  86f0ed7ac6886f978eee3835d2efe4b7fb2f0d8a
rust: use .rev() for reverse range

Differential Revision: https://phab.mercurial-scm.org/D5450

diff -r 86f0ed7ac688 -r 247f51cfc668 rust/hg-core/src/ancestors.rs
--- a/rust/hg-core/src/ancestors.rs	Fri Jan 04 00:00:44 2019 +0530
+++ b/rust/hg-core/src/ancestors.rs	Tue Dec 18 22:12:16 2018 +0900
@@ -321,7 +321,7 @@
 
         // TODO heuristics for with_capacity()?
         let mut missing: Vec<Revision> = Vec::new();
-        for curr in (0..=start).map(|i| start - i) {
+        for curr in (0..=start).rev() {
             if revs_visit.is_empty() {
                 break;
             }