From 7d13a593e93c2d39e44ae89b2ac01cd7ad60ea98 Mon Sep 17 00:00:00 2001
From: Zeno Rogue <zeno@attnam.com>
Date: Mon, 2 Nov 2020 11:48:22 +0100
Subject: [PATCH] rogueviz:subquotient:: removed a C++17-ism

---
 rogueviz/subquotient.cpp | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/rogueviz/subquotient.cpp b/rogueviz/subquotient.cpp
index b2817d01..da2b0577 100644
--- a/rogueviz/subquotient.cpp
+++ b/rogueviz/subquotient.cpp
@@ -54,7 +54,9 @@ void create_subquotient(int qty = -1, int id = 0) {
 
     map<int, int> by_cycle;
     
-    for(auto [s, wb]: vmap) {
+    for(auto swb: vmap) {
+      auto& s = swb.first;
+      auto& wb = swb.second;
       if(s == wb.at) { vertex++; continue; }
       bool is_edge = false;
       for(int j=0; j<s->type; j++) if(s->move(j) == wb.at && (wb+j).peek() == s)