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bug#6583: 23.2; cl loop macro with `and' clause
From: |
Noam Postavsky |
Subject: |
bug#6583: 23.2; cl loop macro with `and' clause |
Date: |
Thu, 2 Jun 2016 18:06:58 -0400 |
tag 6583 + confirmed
found 6583 24.5
found 6583 25.0.94
quit
Thierry Volpiatto <thierry.volpiatto <at> gmail.com> wrote:
> IMHO this is not correct, 'and' clauses should be used after conditionals
> (e.g if, when etc..)
No, it should also work for 'for' clauses, as documented in CL Hyperspec [1]
for-as-clause::= {for | as} for-as-subclause {and for-as-subclause}*
and Emacs' CL manual [2]
If you include several ‘for’ clauses in a row, they are treated
sequentially (as if by ‘let*’ and ‘setq’). You can instead use the
word ‘and’ to link the clauses, in which case they are processed in
parallel (as if by ‘let’ and ‘cl-psetq’).
The SBCL example is just missing the 'do', that's why it failed.
[1]: http://www.lispworks.com/documentation/lw51/CLHS/Body/m_loop.htm
[2]: http://www.gnu.org/software/emacs/manual/html_node/cl/For-Clauses.html
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