Document syntax-sourcev

* NEWS: Add doc link.
* doc/ref/api-macros.texi (Syntax Transformer Helpers): Document
syntax-sourcev.
* module/system/syntax.scm: Re-export syntax-sourcev.

NEWS

@@ -178,6 +178,8 @@ See "Syntax Case" in the manual.
 
 ** `syntax-sourcev'
 
+See "Syntax Transformer Helpers" in the manual.
+
 * Bug fixes
 
 ** Fix reverse-list->string docstring

doc/ref/api-macros.texi

@@ -862,6 +862,13 @@ Return the name of the module whose source contains the identifier
 @var{id}.
 @end deffn
 
+@deffn {Scheme Procedure} syntax-sourcev stx
+Like @code{syntax-source}, but returns its result in a more compact
+@code{#(@var{filename} @var{line} @var{column})} format.  This format is
+used as the internal representation of source locations for syntax
+objects.
+@end deffn
+
 @deffn {Scheme Procedure} syntax-local-binding id [#:resolve-syntax-parameters?=#t]
 Resolve the identifer @var{id}, a syntax object, within the current
 lexical environment, and return two values, the binding type and a

module/system/syntax.scm

@@ -24,7 +24,8 @@
                syntax-local-binding
                (%syntax-module . syntax-module)
                syntax-locally-bound-identifiers
-               syntax-session-id))
+               syntax-session-id
+               syntax-sourcev))
 
 ;; Used by syntax.c.
 (define (print-syntax obj port)