From 086dbba895bdc40347de1b0bff8f77d8f10192d6 Mon Sep 17 00:00:00 2001
From: Jay Xu <jay.xu.krfantasy@gmail.com>
Date: Sat, 11 Jul 2020 20:58:52 +0800
Subject: make chez display output and error messages.

---
 elisp/geiser-chez.el         | 8 +++++++-
 scheme/chez/geiser/geiser.ss | 8 ++++----
 2 files changed, 11 insertions(+), 5 deletions(-)

diff --git a/elisp/geiser-chez.el b/elisp/geiser-chez.el
index 9a24a72..3d4b495 100644
--- a/elisp/geiser-chez.el
+++ b/elisp/geiser-chez.el
@@ -120,7 +120,13 @@ This function uses `geiser-chez-init-file' if it exists."
     (geiser-eval--send/wait "(begin (import (geiser)) (write `((result ) (output . \"\"))) (newline))")))
 
 (defun geiser-chez--display-error (module key msg)
-  (and key (message msg) nil))
+  (when (stringp msg)
+    (save-excursion (insert msg))
+    (geiser-edit--buttonize-files))
+  (and (or (eq key 'chez-error-message)
+           (not key))
+       (not (zerop (length msg)))
+       msg))
 
 ;;; Implementation definition:
 
diff --git a/scheme/chez/geiser/geiser.ss b/scheme/chez/geiser/geiser.ss
index 70313ab..2d13952 100644
--- a/scheme/chez/geiser/geiser.ss
+++ b/scheme/chez/geiser/geiser.ss
@@ -55,10 +55,10 @@
           (with-exception-handler
               (lambda (e)
                 (k `((result "")
-                     (output . ,(get-output-string output-string))
-                     (error (key . ,(with-output-to-string
-                                      (lambda ()
-                                        (display-condition e))))))))
+                     (output . ,(with-output-to-string
+                                  (lambda ()
+                                    (display-condition e))))
+                     (error (key . chez-error-message)))))
             (lambda ()
               (call-with-values
                   ;; evaluate form, allow for multiple return values,
-- 
cgit v1.2.3