From daec22b7dd840cda78dd0216b8c41b13dc0f40f8 Mon Sep 17 00:00:00 2001
From: "Kevin M. Godby" <kevin@godby.org>
Date: Sat, 18 Feb 2017 13:47:59 -0600
Subject: [PATCH 1/2] Add Travis CI check for whitespace at the ends of lines.

---
 .travis.yml | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/.travis.yml b/.travis.yml
index cc9df4af03..26e3887e75 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -7,6 +7,7 @@ env:
   - BUILD_TYPE=make      # build using Makefile
   - BUILD_TYPE=manual    # build manually
   - BUILD_TYPE=complete  # build manually and regenerate figures, grammer, and cross-references
+  - BUILD_TYPE=check-whitespace  # check for whitespace at the ends of lines
 
 script:
   # Build std.pdf
@@ -35,6 +36,14 @@ script:
       pdflatex std;
     fi
   - popd
+  # Fail if there is whitespace at the ends of any lines
+  - if [ "$BUILD_TYPE" = "check-whitespace" ]; then
+      export TEST_STATUS=0;
+      grep '\s$' source/*.tex && export TEST_STATUS=1;
+    fi;
+    if [ "0$TEST_STATUS" != "00" ]; then
+      false;
+    fi;
   # Check to see if generated files are out-dated
   - pushd source
   - for FIGURE in *.dot; do

From e054ed0436e425ce7468e755b3053047b114a50c Mon Sep 17 00:00:00 2001
From: "Kevin M. Godby" <kevin@godby.org>
Date: Sat, 18 Feb 2017 16:45:50 -0600
Subject: [PATCH 2/2] Travis CI: Simplify whitespace test.

---
 .travis.yml | 8 ++------
 1 file changed, 2 insertions(+), 6 deletions(-)

diff --git a/.travis.yml b/.travis.yml
index 26e3887e75..2c99e00e4f 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -38,12 +38,8 @@ script:
   - popd
   # Fail if there is whitespace at the ends of any lines
   - if [ "$BUILD_TYPE" = "check-whitespace" ]; then
-      export TEST_STATUS=0;
-      grep '\s$' source/*.tex && export TEST_STATUS=1;
-    fi;
-    if [ "0$TEST_STATUS" != "00" ]; then
-      false;
-    fi;
+      ! grep '\s$' source/*.tex;
+    fi
   # Check to see if generated files are out-dated
   - pushd source
   - for FIGURE in *.dot; do