From 660fc8e0465e48812fc6f38f82d91d22b0664118 Mon Sep 17 00:00:00 2001
From: Jose Antonio Ortega Ruiz <jao@gnu.org>
Date: Sat, 14 Mar 2009 12:42:09 +0100
Subject: Show implementation in geiser-mode's modeline.

---
 elisp/geiser-impl.el | 7 +++++--
 elisp/geiser-mode.el | 8 ++++++--
 elisp/geiser-repl.el | 8 ++++++--
 3 files changed, 17 insertions(+), 6 deletions(-)

diff --git a/elisp/geiser-impl.el b/elisp/geiser-impl.el
index 4f70b29..20b648e 100644
--- a/elisp/geiser-impl.el
+++ b/elisp/geiser-impl.el
@@ -60,6 +60,10 @@
       geiser-impl-default-implementation
       (car geiser-impl--impls)))
 
+(defsubst geiser-impl--impl-str (&optional impl)
+  (let ((impl (or impl geiser-impl--implementation)))
+    (and impl (capitalize (format "%s" impl)))))
+
 
 ;;; Installing Scheme implementations:
 
@@ -78,7 +82,6 @@
     (geiser-impl--install-eval impl)
     (geiser-impl--register impl)))
 
-
 (defsubst geiser-impl--sym (imp name)
   (intern (format "geiser-%s-%s" imp name)))
 
@@ -104,7 +107,7 @@
   (geiser-impl--sym impl "get-module"))
 
 (defsubst geiser-impl--geiser-procedure-function (impl)
-  (geiser-impl--sym imp "geiser-procedure"))
+  (geiser-impl--sym impl "geiser-procedure"))
 
 (defun geiser-impl--install-eval (impl)
   (setq geiser-eval--get-module-function (geiser-impl--module-function impl))
diff --git a/elisp/geiser-mode.el b/elisp/geiser-mode.el
index cf43e00..57fb84e 100644
--- a/elisp/geiser-mode.el
+++ b/elisp/geiser-mode.el
@@ -135,9 +135,13 @@ With prefix, recursively macro-expand the resulting expression."
 ;;; Geiser mode:
 
 (make-variable-buffer-local
- (defvar geiser-mode-string " G"
+ (defvar geiser-mode-string nil
    "Modeline indicator for geiser-mode"))
 
+(defun geiser-mode--lighter ()
+  (or geiser-mode-string
+      (format " %s" (or (geiser-impl--impl-str) "G"))))
+
 (defvar geiser-mode-map (make-sparse-keymap)
   "Key map for geiser-mode")
 
@@ -151,7 +155,7 @@ When Geiser mode is enabled, a host of nice utilities for
 interacting with the Geiser REPL is at your disposal.
 \\{geiser-mode-map}"
   :init-value nil
-  :lighter geiser-mode-string
+  :lighter (:eval (geiser-mode--lighter))
   :group 'geiser-mode
   :keymap geiser-mode-map
   (when geiser-mode (geiser-impl--set-buffer-implementation))
diff --git a/elisp/geiser-repl.el b/elisp/geiser-repl.el
index c362787..62fbcdf 100644
--- a/elisp/geiser-repl.el
+++ b/elisp/geiser-repl.el
@@ -103,10 +103,14 @@ REPL buffer."
       (with-current-buffer repl
         (add-to-list 'act geiser-impl--implementation)))))
 
+(defsubst geiser-repl--repl-name (impl)
+  (format "%s REPL" (geiser-impl--impl-str impl)))
+
 (defun geiser-repl--to-repl-buffer (impl)
   (unless (and (eq major-mode 'geiser-repl-mode)
                (not (get-buffer-process (current-buffer))))
-    (pop-to-buffer (generate-new-buffer (format "*Geiser REPL (%s)*" impl))))
+    (pop-to-buffer
+     (generate-new-buffer (format "* %s *" (geiser-repl--repl-name impl)))))
   (geiser-impl--set-buffer-implementation impl)
   (geiser-repl-mode))
 
@@ -116,7 +120,7 @@ REPL buffer."
   (let ((binary (geiser-impl--binary impl))
         (args (geiser-impl--parameters impl))
         (prompt-rx (geiser-impl--prompt-regexp impl))
-        (cname (format "Geiser REPL (%s)" impl)))
+        (cname (geiser-repl--repl-name impl)))
     (unless (and binary prompt-rx)
       (error "Sorry, I don't know how to start a REPL for %s" impl))
     (set (make-local-variable 'comint-prompt-regexp) prompt-rx)
-- 
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