wonder about some differences between 2.2.2 and 2.2.5

[Harvey]

Hi,

first sorry for my english, I hope you can understand me.

I thought I know PHP but I wonder about some differences between 2.2.2 and 2.2.5. Perhaps you may explain it (It's only for my personal interest).

1.)
you changed some lines, but not all from
$templatesused = "thelist";
to
$templatesused = 'thelist';

2.)
you changed some lines, but not all from
$var[string]
to
$var['string']

thank you.