From 05448b2e5c0e8e79b44e3572b4b5f47ea42c8b95 Mon Sep 17 00:00:00 2001
From: koalaman <vidar@vidarholen.net>
Date: Sat, 8 Feb 2014 15:10:40 -0800
Subject: [PATCH] Created SC2028 (markdown)

---
 SC2028.md | 25 +++++++++++++++++++++++++
 1 file changed, 25 insertions(+)
 create mode 100644 SC2028.md

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+# echo won't expand escape sequences. Consider printf. 
+
+### Problematic code:
+
+    echo "Name:\t$value"
+
+### Correct code:
+
+    printf "Name:\t%s\n" "$value"
+
+### Rationale:
+
+Backslash escapes like `\t` and `\n` are not expanded by echo, and become literal backslash-t, backslash-n. 
+
+`printf` does expand these sequences, and should be used instead.
+
+Other, non-portable methods include `echo -e '\t'` and `echo $'\t'`. ShellCheck will warn if this is used in a script with shebang `#!/bin/sh`.
+
+If you actually wanted a literal backslash-t, use 
+
+    echo "\\t"
+
+### Contraindications
+
+None
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