From f14a80cbcff40315c91dd532cc7ef7ded6555b72 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Kamil=20=C5=9Aliwak?= <kamil.sliwak@codepoets.it>
Date: Wed, 14 Apr 2021 20:48:35 +0200
Subject: [PATCH] Don't print full diff when bytecode comparison fails in CI

---
 .circleci/config.yml | 25 ++++++++++++++++---------
 1 file changed, 16 insertions(+), 9 deletions(-)

diff --git a/.circleci/config.yml b/.circleci/config.yml
index 5f4df51fd..6e5b2bed4 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -1006,18 +1006,25 @@ jobs:
   t_bytecode_compare:
     docker:
       - image: << pipeline.parameters.ubuntu-2004-docker-image >>
+    environment:
+      REPORT_FILES: |
+        bytecode-report-emscripten.txt
+        bytecode-report-ubuntu-json.txt
+        bytecode-report-ubuntu-cli.txt
+        bytecode-report-osx-json.txt
+        bytecode-report-osx-cli.txt
+        bytecode-report-windows-json.txt
+        bytecode-report-windows-cli.txt
     steps:
       - attach_workspace:
           at: .
-      - run: |
-          diff --report-identical-files --from-file \
-            bytecode-report-emscripten.txt \
-            bytecode-report-ubuntu-json.txt \
-            bytecode-report-ubuntu-cli.txt \
-            bytecode-report-osx-json.txt \
-            bytecode-report-osx-cli.txt \
-            bytecode-report-windows-json.txt \
-            bytecode-report-windows-cli.txt
+      - run:
+          name: Compare reports
+          command: diff --brief --report-identical-files --from-file $REPORT_FILES
+      - run:
+          name: Print diff
+          when: on_fail
+          command: diff --unified=0 --report-identical-files --from-file $REPORT_FILES | head --lines 50
 
 workflows:
   version: 2