VariablePackage: exclToCDocOverviewCGDocRelNotesFAQIndexPermutedIndex
Allegro CL version 10.1
Minimally revised from 10.0.
10.0 version

*sharp-plus-de-facto-standard-compatible*

When true (the initial value is t), the inner conditionals of nested conditionals are resolved to produce the form which the outer conditional applies to. Thus we have the following behavior:

When the value of this variable is nil, the inner conditionals of nested conditionals are not resolved before the outer is applied, producing the following behavior on the forms from above: evaluate as follows:

The section The issue of nested conditionals in Allegro CL in implementation.htm discusses the issue assocated with this variable in detail, with examples. See also *warn-on-nested-reader-conditionals*.

Further note on (list #+allegro :allegro #-allegro #+foo :foo)

If the purpose of this form is to produce the following results:

then this form

#+allegro (list :allegro) #-allegro (list #+foo :foo)

will do that whatever the value of this variable. If users have forms similar to (list #+allegro :allegro #-allegro #+foo :foo), we recommend that they modify them to ones similar to #+allegro (list :allegro) #-allegro (list #+foo :foo) rather than setting this variable to nil.


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This page has had minimal revisions compared to the 10.0 page.
Created 2017.2.15.

ToCDocOverviewCGDocRelNotesFAQIndexPermutedIndex
Allegro CL version 10.1
Minimally revised from 10.0.
10.0 version