r9 vs r10
......
2222
{{{#!if p1!=sans
2323
p1 is not sans(no space)
2424
}}}
25
----
2526
{{{#!if p2 != null
2627
p2: @p2@
2728
}}}
29
{{{#!if p2 == null
30
p2 == null
31
}}}
32
{{{#!if p2 = null
33
p2 = null
34
}}}
35
{{{#!if p2 =! null
36
p2 =! null
37
}}}