From d8876bc0f19842c9773284af2cee3c61a7dfdc39 Mon Sep 17 00:00:00 2001
From: André Aparício <aparicio99@gmail.com>
Date: Thu, 19 Jul 2012 23:35:40 +0100
Subject: Walker: Fix appending to an array of size 1

---
 bashast/libbashWalker.g | 2 +-
 scripts/var_def.bash    | 4 ++++
 2 files changed, 5 insertions(+), 1 deletion(-)

diff --git a/bashast/libbashWalker.g b/bashast/libbashWalker.g
index 34a7660..460ed0c 100644
--- a/bashast/libbashWalker.g
+++ b/bashast/libbashWalker.g
@@ -242,7 +242,7 @@ var_def[bool local]
 	}
 	|^(PLUS_ASSIGN libbash_name=name_base {
 		index = walker->get_max_index(libbash_name) + 1;
-		if(index == 1) // The variable is not defined
+		if(index == 1 && walker->is_unset_or_null(libbash_name, 0))
 			index = 0;
 	} array_def_helper[libbash_name, values, index]){
 		if(local)
diff --git a/scripts/var_def.bash b/scripts/var_def.bash
index fb6550d..dc47b6c 100644
--- a/scripts/var_def.bash
+++ b/scripts/var_def.bash
@@ -102,6 +102,10 @@ echo ${ARRAY12[@]}
 ARRAY13=()
 ARRAY13+=(4 5 6)
 echo ${ARRAY13[@]}
+ARRAY14=(1)
+ARRAY14+=(3)
+ARRAY14+=(4 5)
+echo ${ARRAY14[@]}
 declare num=42
 echo $num
 unset num
-- 
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