From 9979838ec4fae83f664b70133d93feb3cb8dd0ab Mon Sep 17 00:00:00 2001
From: Kazuki Suda <kazuki.suda@gmail.com>
Date: Mon, 5 Feb 2018 01:42:17 +0900
Subject: [PATCH] Fix attemptd assignment to non-variable in bash 3 (#628)

* Fix attemptd assignment to non-variable in bash 3

flaghash variable is an associative array which is only supported in
bash > 3.

* Use -gt instead of >
---
 bash_completions.go | 15 +++++++++------
 1 file changed, 9 insertions(+), 6 deletions(-)

diff --git a/bash_completions.go b/bash_completions.go
index c19fe7a0..81bfb613 100644
--- a/bash_completions.go
+++ b/bash_completions.go
@@ -175,12 +175,15 @@ __handle_flag()
     fi
 
     # keep flag value with flagname as flaghash
-    if [ -n "${flagvalue}" ] ; then
-        flaghash[${flagname}]=${flagvalue}
-    elif [ -n "${words[ $((c+1)) ]}" ] ; then
-        flaghash[${flagname}]=${words[ $((c+1)) ]}
-    else
-        flaghash[${flagname}]="true" # pad "true" for bool flag
+    # flaghash variable is an associative array which is only supported in bash > 3.
+    if [[ -z "${BASH_VERSION}" || "${BASH_VERSINFO[0]}" -gt 3 ]]; then
+        if [ -n "${flagvalue}" ] ; then
+            flaghash[${flagname}]=${flagvalue}
+        elif [ -n "${words[ $((c+1)) ]}" ] ; then
+            flaghash[${flagname}]=${words[ $((c+1)) ]}
+        else
+            flaghash[${flagname}]="true" # pad "true" for bool flag
+        fi
     fi
 
     # skip the argument to a two word flag