From 8fcfa824cfac139bf81110c7deda2e4e52c76939 Mon Sep 17 00:00:00 2001
From: Maddison Hellstrom <b0o@users.noreply.github.com>
Date: Sun, 9 Feb 2020 17:02:21 -0800
Subject: [PATCH] describe workaround to local variable confusion

---
 SC2128.md | 33 ++++++++++++++++++++++++++++++++-
 1 file changed, 32 insertions(+), 1 deletion(-)

diff --git a/SC2128.md b/SC2128.md
index 8d71c24..d1d5773 100644
--- a/SC2128.md
+++ b/SC2128.md
@@ -30,4 +30,35 @@ To get all elements as a single parameter, concatenated by the first character i
 
 ### Exceptions
 
-None.
+ShellCheck can get confused by variable scope if the same variable name was used as an array previously, but is a string in the current context. You can [[ignore]] it in this case.
+
+In the case of local variables, a workaround is to declare the local variable separately from assigning to it:
+
+**Problematic Code:**
+```sh
+foo () {
+   local -a baz
+   baz+=("foo" "bar")
+   echo "${baz[@]}"
+}
+
+bar () {
+   local baz="qux"
+   echo "$baz"
+}
+```
+
+**Correct Code:**
+```sh
+foo () {
+   local -a baz
+   baz+=("foo" "bar")
+   echo "${baz[@]}"
+}
+
+bar () {
+   local baz
+   baz="qux"
+   echo "$baz"
+}
+```