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NEWS tweaks for nil

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* NEWS: Some nil-related news fixes; after 1.9.10, I know, but hey ;-)
This commit is contained in:
Andy Wingo 2010-04-16 10:35:51 +02:00
parent bcbfc9400d
commit b390b00834
1 changed files with 2 additions and 5 deletions
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NEWS
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@ -71,9 +71,7 @@ but when we start to integrate more with Emacs, it is possible that we
break code that assumes that, for example, `(not x)' implies that `x' is
`eq?' to `#f'. This is not a common assumption. Refactoring affected
code to rely on properties instead of identities will improve code
correctness.
That is to say, user code should test falsity with `if', not with `eq?'.
correctness. See "Nil" in the manual, for more details.
** Integration of lalr-scm, a parser generator
@ -1195,8 +1193,7 @@ Just use `scm_call_0', etc instead.
The bit representation of `nil' has been tweaked so that it is now very
efficient to check e.g. if a value is equal to Scheme's end-of-list or
Lisp's nil. Additionally there are a heap of new, specific predicates
like scm_is_null_or_nil. Probably in the future we will #define
scm_is_null to scm_is_null_or_nil.
like scm_is_null_or_nil.
** Support for static allocation of strings, symbols, and subrs.