shell 替换

现有p1=("1a:2b:3c:4d:5e:6f:7g:8h")

需转化为如下变量：

p1=('1a','2b','3c','4d','5e','6f','7g','8h')

shell代码如下

p1=("1a:2b:3c:4d:5e:6f:7g:8h")
echo ${p1}
v_p1=${p1//:/\',\'}
echo ${v_p1}
v_p2="('"${v_p1}"')"
echo ${v_p2}
p1=$v_p2
echo $p1