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Merge remote-tracking branch 'origin/stable-2.0'

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Conflicts:
	libguile/read.c
	test-suite/tests/tree-il.test
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Andy Wingo 2012-02-11 18:14:48 +01:00
commit a41bed83ab
10 changed files with 426 additions and 205 deletions
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19
doc/ref/api-control.texi
View file

@ -212,18 +212,30 @@ result of the @code{cond}-expression.
@end deffn
@deffn syntax case key clause1 clause2 @dots{}
@var{key} may be any expression, the @var{clause}s must have the form
@var{key} may be any expression, and the @var{clause}s must have the form
@lisp
((@var{datum1} @dots{}) @var{expr1} @var{expr2} @dots{})
@end lisp
or
@lisp
((@var{datum1} @dots{}) => @var{expression})
@end lisp
and the last @var{clause} may have the form
@lisp
(else @var{expr1} @var{expr2} @dots{})
@end lisp
or
@lisp
(else => @var{expression})
@end lisp
All @var{datum}s must be distinct. First, @var{key} is evaluated. The
result of this evaluation is compared against all @var{datum} values using
@code{eqv?}. When this comparison succeeds, the expression(s) following
@ -234,6 +246,11 @@ If the @var{key} matches no @var{datum} and there is an
@code{else}-clause, the expressions following the @code{else} are
evaluated. If there is no such clause, the result of the expression is
unspecified.
For the @code{=>} clause types, @var{expression} is evaluated and the
resulting procedure is applied to the value of @var{key}. The result of
this procedure application is then the result of the
@code{case}-expression.
@end deffn

14
doc/ref/api-debug.texi
View file

@ -238,11 +238,11 @@ that, if an error occurs when evaluating the transformed expression,
Guile's debugger can point back to the file and location where the
expression originated.
The way that source properties are stored means that Guile can only
associate source properties with parenthesized expressions, and not, for
example, with individual symbols, numbers or strings. The difference
can be seen by typing @code{(xxx)} and @code{xxx} at the Guile prompt
(where the variable @code{xxx} has not been defined):
The way that source properties are stored means that Guile cannot
associate source properties with individual numbers, symbols,
characters, booleans, or keywords. This can be seen by typing
@code{(xxx)} and @code{xxx} at the Guile prompt (where the variable
@code{xxx} has not been defined):
@example
scheme@@(guile-user)> (xxx)
@ -288,8 +288,8 @@ Return the property specified by @var{key} from @var{obj}'s source
properties.
@end deffn
If the @code{positions} reader option is enabled, each parenthesized
expression will have values set for the @code{filename}, @code{line} and
If the @code{positions} reader option is enabled, supported expressions
will have values set for the @code{filename}, @code{line} and
@code{column} properties.
Source properties are also associated with syntax objects. Procedural