feat(emacs): Small repl things

README.org

@@ -185,6 +185,12 @@ Used as a server admin account with little configuration.
 
 *** TODO [#A] [[id:6141dc5c-2232-4bc0-9464-410c21135c86][Strategies]]
 
+*** TODO When visiting a package, set read-only mode by default
+
+*** TODO Evil ~:rxs~ command
+
+Like ~:s~, but uses the ~rx~ macro.
+
 *** TODO Completions w/ [[https://github.com/minad/corfu][Corfu]]
 
 *** TODO Overlay org-mode links with the domain name

users/crumb/programs/emacs/lib/syd-strategies-repl.el

@@ -1,8 +0,0 @@
-;; syd-strategies-repl.el -*- lexical-binding: t; -*-
-
-;;;###autoload
-(define-minor-mode syd-repl-mode
-  "A minor mode for repl buffers.  One use is to universally customise the
-display of all repl buffers.")
-
-(provide 'syd-strategies-repl)

users/crumb/programs/emacs/lib/syd-strategies.el

@@ -2,6 +2,12 @@
 
 (require 'syd-text)
 
+(comment
+ "For demonstration:"
+ (setq syd-strat--strategies
+       '((:documentation syd-emacs-lisp-lookup-documentation)
+         (:definition evil-goto-definition))))
+
 ;; :documentation : Identifier -> Marker
 (defvar-local syd-strat--strategies nil)
 

users/crumb/programs/emacs/modules/lang/syd-lang-nix.el

@@ -1,8 +1,29 @@
 ;;; syd-lang-nix.el -*- lexical-binding: t; -*-
 
+(require 'syd-handle-repl)
+(require 'syd-handle-lookup)
+
+(defun syd-nix-open-nix-repl ()
+  (interactive)
+  ;; If possible, cd to the project root.  Flakes force you to use relative
+  ;; paths, which can be annoying in combination with
+  ;;
+  ;; REVIEW: Should this be something handled by `syd--call-repl-handler'?
+  (-some-> (syd-project-root) cd)
+  (nix-repl)
+  (current-buffer))
+
 (use-package nix-mode
   :mode "\\.nix\\'"
+  :init
+  (add-to-list 'auto-mode-alist
+               (cons (rx "/flake.lock'")
+                     (if (fboundp 'json-mode)
+                         'json-mode
+                       'js-mode)))
   :config
-  (add-hook 'nix-mode-hook #'lsp))
+  (add-hook 'nix-mode-hook #'lsp)
+  (set-popup-rule! "^\\*nixos-options-doc\\*$" :ttl 0 :quit t)
+  (set-repl-handler! 'nix-mode #'syd-nix-open-nix-repl))
 
 (provide 'syd-lang-nix)

users/crumb/programs/emacs/modules/syd-eshell.el

@@ -183,12 +183,14 @@
    :states 'insert
    "C-d" #'syd-eshell-C-d)
   (:keymaps 'eshell-mode-map
-   :states '(normal insert)
+   :states 'motion
    "[ [" #'eshell-previous-prompt
-   "] ]" #'eshell-next-prompt
+   "] ]" #'eshell-next-prompt)
+  (:keymaps 'eshell-mode-map
+   :states '(normal insert)
    "C-j" #'eshell-next-matching-input-from-input
-   "C-k" #'eshell-previous-matching-input-from-input)
+   "C-k" #'eshell-previous-matching-input-from-input
-
+   "C-s" #'eshell-isearch-backward)
   :config
   ;; When cd'd into a TRAMP remote, automatically expand '/' to the TRAMP
   ;; notation referring to the remote's root.

users/crumb/programs/emacs/modules/syd-ui.el

@@ -90,23 +90,67 @@
   (scroll-bar-mode -1)
   (tool-bar-mode -1))
 
-(use-package persp-mode
+(defun syd-init-kill-comint-on-exit ()
-  :disabled
+  (defun syd-comint--kill-buffer-sentinel (process output)
-  :unless noninteractive
+    "Process sentinel to auto kill associated buffer once PROCESS dies."
-  :commands persp-switch-to-buffer
+    (unless (process-live-p process)
-  :hook (on-init-ui-hook . persp-mode)
+      (kill-buffer (process-buffer process))))
-  :config
+  
-  (setq persp-autokill-buffer-on-remove 'kill-weak
+  (defun syd-comint--add-kill-on-exit-sentinel ()
-        persp-reset-windows-on-nil-window-conf nil
+    "Replace current process sentinel with a new sentinel composed of the
-        persp-nil-hidden t
+current one and `syd-comint--kill-buffer-sentinel'."
-        persp-auto-save-fname "autosave"
+    (let* ((process (get-buffer-process (current-buffer)))
-        persp-save-dir (concat syd-data-dir "workspaces/")
+           (og-sentinel (process-sentinel process))
-        persp-set-last-persp-for-new-frames t
+           (sentinel-list
-        persp-switch-to-added-buffer nil
+            (-remove #'null
-        persp-kill-foreign-buffer-behaviour 'kill
+                     (list og-sentinel #'syd-comint--kill-buffer-sentinel)))
-        persp-remove-buffers-from-nil-persp-behaviour nil
+           (combined-sentinel
-        persp-auto-resume-time -1 ; Don't auto-load on startup
+            (lambda (process line)
-        persp-auto-save-opt (if noninteractive 0 1)))
+              (--each sentinel-list
+                (funcall it process line)))))
+      (setf (process-sentinel process) combined-sentinel)))
+
+  (defvar syd-comint--kill-on-exit-h-has-run nil
+    "Whether or not `syd-comint--kill-on-exit-h' has run or not.  We need this
+buffer-local var to prevent the hook from running several times, as can happen
+for example when calling `shell'.")
+
+  (defun syd-comint--async-funcall (fn &optional buffer args delay)
+    "Run FUNCTION with ARGS in the buffer after a short DELAY."
+    (run-at-time (or delay 0.2) nil
+                 `(lambda ()
+                    (with-current-buffer ,buffer ,(cons fn args)))))
+
+  (syd-add-hook 'comint-mode-hook
+    (defun syd-comint--kill-on-exit-h ()
+     (unless syd-comint--kill-on-exit-h-has-run
+       (setq-local syd-comint--kill-on-exit-h-has-run t)
+       (syd-comint--async-funcall
+        #'syd-comint--add-kill-on-exit-sentinel
+        (current-buffer))))))
+
+(with-eval-after-load 'comint
+  (custom-theme-set-faces
+   'user
+   ;; Default prompt face is very ugly.  Give it a more subtle look.
+   (require 'syd-kanagawa)
+   `(comint-highlight-prompt
+     ((t :foreground ,(syd-kanagawa-get 'old-white)
+         :background unspecified
+         :weight bold))))
+
+  (syd-init-kill-comint-on-exit)
+
+  (general-def
+    :keymaps 'comint-mode-map
+    :states '(normal insert)
+    "C-k" #'comint-previous-input
+    "C-j" #'comint-next-input
+    "C-s" #'comint-history-isearch-backward)
+  (general-def
+    :keymaps 'comint-mode-map
+    :states 'insert
+    "C-d" #'comint-delchar-or-maybe-eof))
 
 (syd-add-hook 'on-init-ui-hook
   (defun syd-init-ui-hacks ()