diff --git a/kallithea/tests/fixture.py b/kallithea/tests/fixture.py
--- a/kallithea/tests/fixture.py
+++ b/kallithea/tests/fixture.py
@@ -295,4 +295,3 @@ class Fixture(object):
                 f_path=filename
             )
         return cs
-
diff --git a/whitespacecleanup.sh b/whitespacecleanup.sh
--- a/whitespacecleanup.sh
+++ b/whitespacecleanup.sh
@@ -3,18 +3,18 @@
 # Enforce some consistency in whitespace - just to avoid spurious whitespaces changes
 
 files=`hg loc '*.py' '*.html' '*.css' '*.rst' '*.txt' '*.js' | egrep -v '/lockfiles.py|LICENSE-MERGELY.html|/codemirror/|/fontello/|(graph|mergely|native.history|select2/select2|yui.flot|yui.2.9)\.js$'`
-sed -i "s,`printf '\t'`,    ,g" $files
-sed -i "s,  *$,,g" $files
-# add trailing newline if missing:
-sed -i '$a\' $files
+sed -i -e "s,`printf '\t'`,    ,g" $files
+sed -i -e "s,  *$,,g" $files
+# ensure one trailing newline - remove empty last line and make last line include trailing newline:
+sed -i -e '$,${/^$/d}' -e '$a\' $files
 
-sed -i 's,\([^ /]\){,\1 {,g' `hg loc '*.css'`
-sed -i 's|^\([^ /].*,\)\([^ ]\)|\1 \2|g' `hg loc '*.css'`
+sed -i -e 's,\([^ /]\){,\1 {,g' `hg loc '*.css'`
+sed -i -e 's|^\([^ /].*,\)\([^ ]\)|\1 \2|g' `hg loc '*.css'`
 
-sed -i 's/^\(    [^: ]*\) *: *\([^/]\)/\1: \2/g' kallithea/public/css/{style,contextbar}.css
-sed -i '1s|, |,|g' kallithea/public/css/{style,contextbar}.css
-sed -i 's/^\([^ ,/]\+ [^,]*[^ ,]\) *, *\(.\)/\1,\n\2/g' kallithea/public/css/{style,contextbar}.css
-sed -i 's/^\([^ ,/].*\)   */\1 /g' kallithea/public/css/{style,contextbar}.css
-sed -i 's,^--$,-- ,g' kallithea/templates/email_templates/main.txt
+sed -i -e 's/^\(    [^: ]*\) *: *\([^/]\)/\1: \2/g' kallithea/public/css/{style,contextbar}.css
+sed -i -e '1s|, |,|g' kallithea/public/css/{style,contextbar}.css
+sed -i -e 's/^\([^ ,/]\+ [^,]*[^ ,]\) *, *\(.\)/\1,\n\2/g' kallithea/public/css/{style,contextbar}.css
+sed -i -e 's/^\([^ ,/].*\)   */\1 /g' kallithea/public/css/{style,contextbar}.css
+sed -i -e 's,^--$,-- ,g' kallithea/templates/email_templates/main.txt
 
 hg diff