From d1e2650aca8ba340d98af22a08be20baf0abde0e Mon Sep 17 00:00:00 2001
From: Takashi Kokubun <takashikkbn@gmail.com>
Date: Mon, 15 Jul 2019 13:47:28 +0900
Subject: [PATCH] Force-fetch unicode update only when it's needed

nobu said that we could be banned if we aggressively downloaded unicode
file from Travis.
---
 .travis.yml | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/.travis.yml b/.travis.yml
index 56320ec118..36a9f8d157 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -334,8 +334,6 @@ env:
       - TEST_ALL_ISOLATED_TESTS="../test/ruby/test_gc_compact.rb"
       # Disabling -j3 because it seems to cause a hang on building Ruby: https://travis-ci.org/ruby/ruby/jobs/471021727
       - JOBS=
-      # Prevent random failure by missing build dependency like https://travis-ci.org/ruby/ruby/jobs/558571461
-      - ALWAYS_UPDATE_UNICODE=yes
 
   - &dependency
     name: Check dependencies in makefiles
@@ -415,7 +413,12 @@ before_script:
   - "> .rbconfig.time"
   - sed -f tool/prereq.status template/Makefile.in common.mk > Makefile
   - date; make touch-unicode-files
-  - date; make -s $JOBS $UPDATE_UNICODE up
+  - |-
+    date
+    if ! make -s $JOBS $UPDATE_UNICODE up; then
+      # Prevent random failure by missing build dependency like https://travis-ci.org/ruby/ruby/jobs/558571461
+      make -s $JOBS $UPDATE_UNICODE ALWAYS_UPDATE_UNICODE=yes up
+    fi
   - date; make -s $JOBS srcs
   - rm -f config.status Makefile rbconfig.rb .rbconfig.time
   - |-