[Asterisk-Users] Format of extensions.conf

[David Tillman]

In my (inherited) extensions.conf I have some lines of the format:

  exten => o,2,GotoIf($["foo${FROM_DID}" =
"foo"]?from-pstn,s,1:from-pstn,${FROM_DID},1)

and some lines like:

  exten => s,1,GotoIf($[foo${ECID${CALLERIDNUM}} = foo]?4)


Note the quotes around the "foo${FROM_DID}" and "foo" in the
first, but the lack of quotes in the second.

Are these syntacticly equivalent?

In the first, is it just comparing to see if the string "foo" still equals
"foo" after the vars are interpolated?

Thanks,
-dave