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[Coq-Club] "Sequence is associative." (?)

From: Jeremy Dawson <Jeremy.Dawson AT anu.edu.au>
To: "coq-club AT inria.fr" <coq-club AT inria.fr>
Subject: [Coq-Club] "Sequence is associative." (?)
Date: Wed, 23 Jan 2019 09:32:27 +0000
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Hi,

thanks for all the answers to my previous questions, some of which I'm
still working through.

In https://coq.inria.fr/refman/proof-engine/ltac.html
under Semantics then under Sequence it says
Sequence is associative.

I would take that to mean that
(tac1 ; tac2) ; tac3
is the same as
tac1 ; (tac2 ; tac3)

But is this so? What if the tactics do some instantiating of
existential variables, then the order of attacking subgoals would matter?

Also, for the same reason, it would be useful to know, for
tac1 ; tac2
which order tac2 is applied to the subgoals resulting from tac1

Cheers,

Jeremy

[Coq-Club] "Sequence is associative." (?), Jeremy Dawson, 01/23/2019
- Re: [Coq-Club] "Sequence is associative." (?), Théo Zimmermann, 01/23/2019
  - Re: [Coq-Club] "Sequence is associative." (?), Cao Qinxiang, 01/23/2019
    - Re: [Coq-Club] "Sequence is associative." (?), Théo Zimmermann, 01/23/2019
      - Re: [Coq-Club] "Sequence is associative." (?), Théo Zimmermann, 01/23/2019
        
        Re: [Coq-Club] "Sequence is associative." (?), Jeremy Dawson, 01/23/2019
  - Re: [Coq-Club] "Sequence is associative." (?), Jean-Christophe Léchenet, 01/23/2019
    - Re: [Coq-Club] "Sequence is associative." (?), Théo Zimmermann, 01/23/2019
      - Re: [Coq-Club] "Sequence is associative." (?), Théo Zimmermann, 01/23/2019
        
        Re: [Coq-Club] "Sequence is associative." (?), Jeremy Dawson, 01/24/2019
        
        Re: [Coq-Club] "Sequence is associative." (?), Jeremy Dawson, 01/24/2019