From b909137f94ad6c37939c73125b1bba81d1d81abc Mon Sep 17 00:00:00 2001
From: Nick Fitzgerald <fitzgen@gmail.com>
Date: Tue, 18 Jul 2017 13:37:14 -0700
Subject: [PATCH] Disallow tabs in Travis CI

This addresses some concerns raised in #142, but perhaps it also makes sense to
expand this beyond `creduce.in` to the rest of the code base.
---
 .travis.yml | 18 ++++++++++++------
 1 file changed, 12 insertions(+), 6 deletions(-)

diff --git a/.travis.yml b/.travis.yml
index 86ec0b9c..07179bee 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -16,12 +16,18 @@ language: cpp
 before_install:
   - sudo scripts/travis_deps.sh
 
-script: >
-  CXX=/usr/lib/llvm-4.0/bin/clang++
-  CC=/usr/lib/llvm-4.0/bin/clang
-  ./configure --with-llvm=/usr/lib/llvm-4.0 &&
-  make -j2 &&
-  make check
+script:
+  - |
+    if grep -q '	' ./creduce/creduce.in; then
+        echo "No tabs allowed"
+        exit 1
+    fi
+  - |
+    CXX=/usr/lib/llvm-4.0/bin/clang++
+    CC=/usr/lib/llvm-4.0/bin/clang
+    ./configure --with-llvm=/usr/lib/llvm-4.0 &&
+    make -j2 &&
+    make check
 
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