Redisplaying the prompt after empty lines on the REPL.

1 files changed, 16 insertions, 5 deletions

diff --git a/elisp/geiser-repl.el b/elisp/geiser-repl.el
index a68f6c9..adcf03f 100644
--- a/elisp/geiser-repl.el
+++ b/elisp/geiser-repl.el
@@ -396,11 +396,22 @@ module command as a string")
       (geiser-syntax--nesting-level))))
 
 (defun geiser-repl--send-input ()
+  (let* ((proc (get-buffer-process (current-buffer)))
+         (pmark (and proc (process-mark proc)))
+         (intxt (and pmark (buffer-substring pmark (point)))))
+    (when intxt
+      (comint-send-input)
+      (when (string-match "^\\s-*$" intxt)
+        (comint-send-string proc
+                            (geiser-eval--scheme-str '((:ge no-values))))
+        (comint-send-string proc "\n")))))
+
+(defun geiser-repl--maybe-send ()
   (interactive)
   (let ((p (point)))
     (end-of-line)
     (if (<= (geiser-repl--nesting-level) 0)
-        (comint-send-input)
+        (geiser-repl--send-input)
       (goto-char p)
       (if geiser-repl-auto-indent-p
           (geiser-repl--newline-and-indent)
@@ -411,13 +422,13 @@ module command as a string")
 \\{geiser-repl-mode-map}"
   (scheme-mode-variables)
   (set (make-local-variable 'mode-line-process) nil)
-  (set (make-local-variable 'comint-use-prompt-regexp) t)
+  (set (make-local-variable 'comint-use-prompt-regexp) nil)
   (set (make-local-variable 'comint-prompt-read-only)
        geiser-repl-read-only-prompt-p)
   (set (make-local-variable 'beginning-of-defun-function)
        'geiser-repl--beginning-of-defun)
   (set (make-local-variable 'comint-input-ignoredups)
-       'geiser-repl-history-no-dups-p)
+       geiser-repl-history-no-dups-p)
   (setq geiser-eval--get-module-function 'geiser-repl--module-function)
   (when geiser-repl-autodoc-p (geiser-autodoc-mode 1))
   (setq geiser-autodoc--inhibit-function 'geiser-con--is-debugging)
@@ -427,8 +438,8 @@ module command as a string")
   (compilation-setup t))
 
 (define-key geiser-repl-mode-map "\C-d" 'delete-char)
-(define-key geiser-repl-mode-map "\C-m" 'geiser-repl--send-input)
-(define-key geiser-repl-mode-map [return] 'geiser-repl--send-input)
+(define-key geiser-repl-mode-map "\C-m" 'geiser-repl--maybe-send)
+(define-key geiser-repl-mode-map [return] 'geiser-repl--maybe-send)
 (define-key geiser-repl-mode-map "\C-j" 'geiser-repl--newline-and-indent)
 
 (define-key geiser-repl-mode-map "\C-a" 'geiser-repl--bol)