From 95092971ab46147cb57da9ee6eaaf2ff3bd0f171 Mon Sep 17 00:00:00 2001
From: Alexander Regueiro <alexreg@me.com>
Date: Fri, 23 Feb 2018 21:51:29 +0000
Subject: [PATCH] Added check for all source files to ensure they have no lines
 longer than 80 chars.

---
 .travis.yml              |  2 ++
 ci/check_line_lengths.sh | 19 +++++++++++++++++++
 ci/install.sh            |  1 +
 3 files changed, 22 insertions(+)
 create mode 100755 ci/check_line_lengths.sh
 mode change 100644 => 100755 ci/install.sh

diff --git a/.travis.yml b/.travis.yml
index 5ca97ba7..da9c1ed0 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,6 +1,8 @@
 language: rust
 cache:
 - cargo
+before_install:
+- MAX_LINE_LENGTH=80 bash ci/check_line_lengths.sh src/**/*.md
 install:
 - source ~/.cargo/env || true
 - bash ci/install.sh
diff --git a/ci/check_line_lengths.sh b/ci/check_line_lengths.sh
new file mode 100755
index 00000000..8001ea9a
--- /dev/null
+++ b/ci/check_line_lengths.sh
@@ -0,0 +1,19 @@
+#!/bin/bash
+
+echo "Checking line lengths in all source files <= $MAX_LINE_LENGTH chars..."
+
+echo "Offending files and lines:"
+(( success = 1 ))
+for file in "$@" ; do
+  echo "$file"
+  (( line_no = 0 ))
+  while IFS="" read -r line || [[ -n "$line" ]] ; do
+    (( line_no++ ))
+    if (( "${#line}" > $MAX_LINE_LENGTH )) ; then
+      (( success = 0 ))
+      echo -e "\t$line_no : $line"
+    fi
+  done < "$file"
+done
+
+(( $success )) && echo "No offending lines found."
diff --git a/ci/install.sh b/ci/install.sh
old mode 100644
new mode 100755
index 975857a9..ea90e853
--- a/ci/install.sh
+++ b/ci/install.sh
@@ -1,4 +1,5 @@
 #!/bin/bash
+
 set -ex
 
 function cargo_install() {