From 4604066c3729766b49da0251786286b6c1ae8caa Mon Sep 17 00:00:00 2001
From: "Joseph C. Sible" <josephcsible@users.noreply.github.com>
Date: Sun, 5 Apr 2020 16:16:12 -0400
Subject: [PATCH] Use head instead of (!! 0)

---
 src/ShellCheck/AnalyzerLib.hs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/ShellCheck/AnalyzerLib.hs b/src/ShellCheck/AnalyzerLib.hs
index 8208a5b..c5eaea6 100644
--- a/src/ShellCheck/AnalyzerLib.hs
+++ b/src/ShellCheck/AnalyzerLib.hs
@@ -798,7 +798,7 @@ getVariablesFromLiteralToken token =
 prop_getVariablesFromLiteral1 =
     getVariablesFromLiteral "$foo${bar//a/b}$BAZ" == ["foo", "bar", "BAZ"]
 getVariablesFromLiteral string =
-    map (!! 0) $ matchAllSubgroups variableRegex string
+    map head $ matchAllSubgroups variableRegex string
   where
     variableRegex = mkRegex "\\$\\{?([A-Za-z0-9_]+)"