From c1b9834e06008559ff1ee448e570d6af76bba9c5 Mon Sep 17 00:00:00 2001
From: Pierre Fenoll <pierrefenoll@gmail.com>
Date: Wed, 8 Nov 2017 15:47:11 +0100
Subject: shellcheck: add a pass to CI

---
 .travis.yml | 32 ++++++++++++++++++++++++++++++--
 README.md   |  2 +-
 2 files changed, 31 insertions(+), 3 deletions(-)

diff --git a/.travis.yml b/.travis.yml
index 326bbc2..cb42360 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,3 +1,13 @@
+language: bash
+sudo: false
+
+addons:
+  apt:
+    sources:
+      - debian-sid # for: shellCheck
+    packages:
+      - shellcheck
+
 os:
   - linux
   - osx
@@ -6,19 +16,37 @@ env:
   global:
     - KERL_BASE_DIR="$TMPDIR"/.kerl
     - KERL_CONFIGURE_DISABLE_APPLICATIONS="odbc"
-  matrix: 
-    - _KERL_VSN=19.2 
+  matrix:
+    - _KERL_VSN=19.2
     - _KERL_VSN=18.3
     - _KERL_VSN=17.5
     - _KERL_VSN=R16B03-1
 
+before_script:
+  - set -o pipefail
+  - |
+    if [[ "$TRAVIS_OS_NAME" == 'linux' ]] && [[ "$_KERL_VSN" == '19.2' ]]; then
+      set -e
+      export USING_SHELLCHECK=1
+      shellcheck ./kerl
+      shellcheck ./bash_completion/kerl
+    # zsh_completion/_kerl  # https://github.com/koalaman/shellcheck/issues/809
+      set +e
+    fi
+
 script:
+  - set -e
   - ./kerl update releases
   - travis_wait 45 ./kerl build "$_KERL_VSN" "$_KERL_VSN"
   - ./kerl install "$_KERL_VSN" "install_$_KERL_VSN"
   - ./kerl status
+  - |
+    if [[ "$USING_SHELLCHECK" == '1' ]]; then
+      shellcheck $(./kerl path install_$_KERL_VSN)/activate
+    fi
   - source $(./kerl path install_$_KERL_VSN)/activate
   - erl -s crypto -s init stop
   - kerl_deactivate
   - ./kerl delete installation $(./kerl path install_$_KERL_VSN)
   - ./kerl delete build "$_KERL_VSN"
+  - set +e
diff --git a/README.md b/README.md
index 5db2901..d197ee5 100644
--- a/README.md
+++ b/README.md
@@ -1,4 +1,4 @@
-kerl
+kerl [![TravisCI build status](https://travis-ci.org/kerl/kerl.svg?branch=master)](https://travis-ci.org/kerl/kerl)
 ====
 
 CI status: [![TravisCI build status](https://travis-ci.org/kerl/kerl.svg?branch=master)](https://travis-ci.org/kerl/kerl) [![CircleCI](https://circleci.com/gh/kerl/kerl.svg?style=svg)](https://circleci.com/gh/kerl/kerl)
-- 
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