From 64dda4c618bcd8d62688d0f7196fbc2e4c60d203 Mon Sep 17 00:00:00 2001
From: koalaman <vidar@vidarholen.net>
Date: Sat, 18 Jul 2015 11:31:47 -0700
Subject: [PATCH] Created SC2159 (markdown)

---
 SC2159.md | 25 +++++++++++++++++++++++++
 1 file changed, 25 insertions(+)
 create mode 100644 SC2159.md

diff --git a/SC2159.md b/SC2159.md
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@@ -0,0 +1,25 @@
+## [ 0 ] is true. Use 'false' instead
+
+### Problematic code:
+
+    if [ 0 ]
+    then
+      echo "always triggers"
+    fi
+
+### Correct code:
+
+    if false
+    then
+      echo "never triggers"
+    fi
+
+### Rationale:
+
+`[ str ]` checks whether `str` is non-empty. It doesn't matter if `str` is `0`, it will still be evaluated for non-emptyness. 
+
+Instead, use the command `false` which -- as the manual puts it -- does nothing, unsuccessfully.
+
+### Exceptions:
+
+None
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