From 99b017586c730a2713e56ebc890b1dbc85f3323e Mon Sep 17 00:00:00 2001
From: Bertrand Benjamin <benjamin.bertrand@opytex.org>
Date: Sun, 1 Apr 2018 18:13:23 +0300
Subject: [PATCH] Allow empty signalbar and print nothing

---
 tools/style/shortcuts.sty | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/tools/style/shortcuts.sty b/tools/style/shortcuts.sty
index 22b460b..2cad935 100755
--- a/tools/style/shortcuts.sty
+++ b/tools/style/shortcuts.sty
@@ -119,24 +119,28 @@
 }
 \newcommand{\filledSignalBar}[1]{%
     \IfEqCase{#1}{%
-        {e}{%
+        {}{%
         }
         {3}{%
+            \EmptySignalBar
             \filldraw[fill=green] (0, 0) rectangle ++(0.8, 1);
             \filldraw[fill=green] (1, 0) rectangle ++(0.8, 2);
             \filldraw[fill=green] (2, 0) rectangle ++(0.8, 3);
             \filldraw[fill=green] (3, 0) rectangle ++(0.8, 4);
         }
         {2}{%
+            \EmptySignalBar
             \filldraw[fill=green] (0, 0) rectangle ++(0.8, 1);
             \filldraw[fill=green] (1, 0) rectangle ++(0.8, 2);
             \filldraw[fill=green] (2, 0) rectangle ++(0.8, 3);
         }
         {1}{%
+            \EmptySignalBar
             \filldraw[fill=yellow] (0, 0) rectangle ++(0.8, 1);
             \filldraw[fill=yellow] (1, 0) rectangle ++(0.8, 2);
         }
         {0}{%
+            \EmptySignalBar
             \filldraw[fill=red] (0, 0) rectangle ++(0.8, 1);
         }
     }[\PackageError{Assesment}{Undefinded type of answer: #1}{}]%
@@ -144,7 +148,6 @@
 
 \newcommand{\SignalBar}[1]{%
     \begin{tikzpicture}[scale=0.15]
-        \EmptySignalBar
         \filledSignalBar{#1}
     \end{tikzpicture}
 }