From 10fc0f3411cf838ee67e01df75fe8d84de367319 Mon Sep 17 00:00:00 2001
From: Jose Antonio Ortega Ruiz <jao@gnu.org>
Date: Sun, 3 May 2009 13:44:22 +0200
Subject: Better edit location heuristics.

---
 elisp/geiser-edit.el           | 20 +++++++++++++++++---
 scheme/plt/geiser/locations.ss | 27 ++++++++++++++++++---------
 2 files changed, 35 insertions(+), 12 deletions(-)

diff --git a/elisp/geiser-edit.el b/elisp/geiser-edit.el
index 9471981..c02e7bb 100644
--- a/elisp/geiser-edit.el
+++ b/elisp/geiser-edit.el
@@ -54,6 +54,9 @@
         ((eq method 'frame) (find-file-other-frame file))
         (t (find-file file))))
 
+(defsubst geiser-edit--location-name (loc)
+  (cdr (assoc 'name loc)))
+
 (defsubst geiser-edit--location-file (loc)
   (cdr (assoc 'file loc)))
 
@@ -65,7 +68,6 @@
                 "defmacro"
                 "define-macro"
                 "define-syntax"
-                "define-syntaxes"
                 "-define-syntax"
                 "-define"
                 "define*"
@@ -73,8 +75,18 @@
                 "define-class"
                 "define-struct")))
 
+(defconst geiser-edit--def-re*
+  (regexp-opt '("define-syntaxes" "define-values")))
+
 (defsubst geiser-edit--def-re (thing)
-  (format "(%s +(?%s\\_>" geiser-edit--def-re (regexp-quote (format "%s" thing))))
+  (format "(%s +(?%s\\_>"
+          geiser-edit--def-re
+          (regexp-quote (format "%s" thing))))
+
+(defsubst geiser-edit--def-re* (thing)
+  (format "(%s +([^)]*?\\_<%s\\_>"
+          geiser-edit--def-re*
+          (regexp-quote (format "%s" thing))))
 
 (defsubst geiser-edit--symbol-re (thing)
   (format "\\_<%s\\_>" (regexp-quote (format "%s" thing))))
@@ -84,11 +96,13 @@
       (goto-line line)
     (goto-char (point-min))
     (when (or (re-search-forward (geiser-edit--def-re symbol) nil t)
+              (re-search-forward (geiser-edit--def-re* symbol) nil t)
               (re-search-forward (geiser-edit--symbol-re symbol) nil t))
       (goto-char (match-beginning 0)))))
 
 (defun geiser-edit--try-edit-location (symbol loc &optional method)
-  (let ((file (geiser-edit--location-file loc))
+  (let ((symbol (or (geiser-edit--location-name loc) symbol))
+        (file (geiser-edit--location-file loc))
         (line (geiser-edit--location-line loc)))
     (unless file (error "Couldn't find edit location for '%s'" symbol))
     (unless (file-readable-p file) (error "Couldn't open '%s' for read" file))
diff --git a/scheme/plt/geiser/locations.ss b/scheme/plt/geiser/locations.ss
index 1b13e8f..b738a48 100644
--- a/scheme/plt/geiser/locations.ss
+++ b/scheme/plt/geiser/locations.ss
@@ -27,22 +27,31 @@
 #lang scheme
 
 (provide symbol-location
-         symbol-module-path-name
-         symbol->module-name)
+         symbol-module-name
+         symbol-module-path-name)
 
 (require geiser/utils)
 
-(define (symbol-module-path-name sym)
-  (let ([binding (identifier-binding sym)])
-    (and (list? binding)
+(define (%symbol-location sym)
+  (let* ((id (namespace-symbol->identifier sym))
+         (binding (and id (identifier-binding id))))
+    (if (list? binding)
+        (cons
+         (cadr binding)
          (resolved-module-path-name
-          (module-path-index-resolve (car binding))))))
+          (module-path-index-resolve (car binding))))
+        (cons sym #f))))
 
 (define (symbol-location sym)
-  (let ((file (symbol-module-path-name (namespace-symbol->identifier sym))))
-    (list (cons 'file (if (path? file) (path->string file) '())))))
+  (let* ((loc (%symbol-location sym))
+         (name (car loc))
+         (path (cdr loc)))
+    (list (cons 'name name)
+          (cons 'file (if (path? path) (path->string path) '())))))
 
-(define symbol->module-name
+(define symbol-module-path-name (compose cdr %symbol-location))
+
+(define symbol-module-name
   (compose module-path-name->name symbol-module-path-name))
 
 ;;; locations.ss ends here
-- 
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