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-rw-r--r--emacs/guix-backend.el47
1 files changed, 38 insertions, 9 deletions
diff --git a/emacs/guix-backend.el b/emacs/guix-backend.el
index 46d0f06778..0ca9083434 100644
--- a/emacs/guix-backend.el
+++ b/emacs/guix-backend.el
@@ -121,6 +121,22 @@ This REPL is used for receiving information only if
(defvar guix-internal-repl-buffer-name "*Guix Internal REPL*"
"Default name of an internal Guix REPL buffer.")
+(defvar guix-before-repl-operation-hook nil
+ "Hook run before executing an operation in Guix REPL.")
+
+(defvar guix-after-repl-operation-hook
+ '(guix-repl-operation-success-message)
+ "Hook run after executing successful operation in Guix REPL.")
+
+(defvar guix-repl-operation-p nil
+ "Non-nil, if current operation is performed by `guix-eval-in-repl'.
+This internal variable is used to distinguish Guix operations
+from operations performed in Guix REPL by a user.")
+
+(defun guix-repl-operation-success-message ()
+ "Message telling about successful Guix operation."
+ (message "Guix operation has been performed."))
+
(defun guix-get-guile-program (&optional internal)
"Return a value suitable for `geiser-guile-binary'."
(if (or internal
@@ -184,12 +200,9 @@ this address (it should be defined by
(geiser-impl--set-buffer-implementation impl)
(geiser-repl--autodoc-mode -1)
(goto-char (point-max))
- (let* ((prompt-re (geiser-repl--prompt-regexp impl))
- (deb-prompt-re (geiser-repl--debugger-prompt-regexp impl))
- (prompt (geiser-con--combined-prompt prompt-re deb-prompt-re)))
- (or prompt-re
- (error "Oh no! Guix REPL in the buffer '%s' has not been started"
- (buffer-name buffer)))
+ (let ((prompt (geiser-con--combined-prompt
+ geiser-guile--prompt-regexp
+ geiser-guile--debugger-prompt-regexp)))
(geiser-repl--save-remote-data address)
(geiser-repl--start-scheme impl address prompt)
(geiser-repl--quit-setup)
@@ -199,18 +212,32 @@ this address (it should be defined by
(setq geiser-repl--connection
(geiser-con--make-connection
(get-buffer-process (current-buffer))
- prompt-re
- deb-prompt-re))
+ geiser-guile--prompt-regexp
+ geiser-guile--debugger-prompt-regexp))
(geiser-repl--startup impl address)
(geiser-repl--autodoc-mode 1)
(geiser-company--setup geiser-repl-company-p)
(add-hook 'comint-output-filter-functions
- 'geiser-repl--output-filter
+ 'guix-repl-output-filter
nil t)
(set-process-query-on-exit-flag
(get-buffer-process (current-buffer))
geiser-repl-query-on-kill-p)))))
+(defun guix-repl-output-filter (str)
+ "Filter function suitable for `comint-output-filter-functions'.
+This is a replacement for `geiser-repl--output-filter'."
+ (cond
+ ((string-match-p geiser-guile--prompt-regexp str)
+ (geiser-autodoc--disinhibit-autodoc)
+ (when guix-repl-operation-p
+ (setq guix-repl-operation-p nil)
+ (run-hooks 'guix-after-repl-operation-hook)))
+ ((string-match geiser-guile--debugger-prompt-regexp str)
+ (geiser-con--connection-set-debugging geiser-repl--connection
+ (match-beginning 0))
+ (geiser-autodoc--disinhibit-autodoc))))
+
(defun guix-get-repl-buffer (&optional internal)
"Return Guix REPL buffer; start REPL if needed.
If INTERNAL is non-nil, return an additional internal REPL."
@@ -288,6 +315,8 @@ Return elisp expression of the first result value of evaluation."
(defun guix-eval-in-repl (str)
"Switch to Guix REPL and evaluate STR with guile expression there."
+ (run-hooks 'guix-before-repl-operation-hook)
+ (setq guix-repl-operation-p t)
(let ((repl (guix-get-repl-buffer)))
(with-current-buffer repl
(delete-region (geiser-repl--last-prompt-end) (point-max))