From 841766449b9dc14d40186a67cdceda26fc6ca4ff Mon Sep 17 00:00:00 2001
From: Jose Antonio Ortega Ruiz <jao@gnu.org>
Date: Fri, 19 Jun 2009 16:52:03 +0200
Subject: Guile: backtrace buttonization.

---
 scheme/guile/geiser/emacs.scm | 3 ++-
 scheme/guile/geiser/xref.scm  | 9 ++++++++-
 2 files changed, 10 insertions(+), 2 deletions(-)

(limited to 'scheme')

diff --git a/scheme/guile/geiser/emacs.scm b/scheme/guile/geiser/emacs.scm
index edae487..2aa91da 100644
--- a/scheme/guile/geiser/emacs.scm
+++ b/scheme/guile/geiser/emacs.scm
@@ -39,7 +39,8 @@
                ge:module-exports
                ge:module-location
                ge:callers
-               ge:callees)
+               ge:callees
+               ge:find-file)
   #:use-module (geiser evaluation)
   #:use-module ((geiser modules) :renamer (symbol-prefix-proc 'ge:))
   #:use-module ((geiser completion) :renamer (symbol-prefix-proc 'ge:))
diff --git a/scheme/guile/geiser/xref.scm b/scheme/guile/geiser/xref.scm
index f00f724..2336fb2 100644
--- a/scheme/guile/geiser/xref.scm
+++ b/scheme/guile/geiser/xref.scm
@@ -28,7 +28,8 @@
   #:export (symbol-location
             generic-methods
             callers
-            callees)
+            callees
+            find-file)
   #:use-module (geiser utils)
   #:use-module (geiser modules)
   #:use-module (geiser doc)
@@ -90,4 +91,10 @@
     (and obj
          (map procedure-xref (procedure-callees obj)))))
 
+(define (find-file path)
+  (let loop ((dirs %load-path))
+    (if (null? dirs) #f
+        (let ((candidate (string-append (car dirs) "/" path)))
+          (if (file-exists? candidate) candidate (loop (cdr dirs)))))))
+
 ;;; xref.scm ends here
-- 
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