Trigger travis builds when .travis changes

.travis.yml

@@ -77,7 +77,7 @@ jobs:
           - ~/.npm
 
       before_install:
-        - .travis/affects.sh explorer/ || travis_terminate 0
+        - .travis/affects.sh explorer/ .travis || travis_terminate 0
         - cd explorer
 
       script:
@@ -99,7 +99,7 @@ jobs:
           - ~/.npm
 
       before_install:
-        - .travis/affects.sh web3.js/ || travis_terminate 0
+        - .travis/affects.sh web3.js/ .travis || travis_terminate 0
         - cd web3.js/
         - source .travis/before_install.sh
 

.travis/affects.sh

@@ -1,6 +1,6 @@
 #!/usr/bin/env bash
 #
-# Check if files in the commit range match a regex
+# Check if files in the commit range match one or more prefixes
 #
 
 (
@@ -9,10 +9,12 @@
 )
 
 for file in $(git diff --name-only "$TRAVIS_COMMIT_RANGE"); do
-  if [[ $file =~ ^"$1" ]]; then
-    exit 0
-  fi
+  for prefix in "$@"; do
+    if [[ $file =~ ^"$prefix" ]]; then
+      exit 0
+    fi
+    done
 done
 
-echo "No modifications to $1"
+echo "No modifications to $@"
 exit 1