SLY: Bind S-SPC to ambrevar/sly-insert-double-quotes.

.emacs.d/lisp/init-sly.el

@@ -76,12 +76,25 @@ If REFRESH is non-nil, rebuild the environment."
   (global-helm-sly-mode)
   (add-to-list 'helm-source-names-using-follow "Lisp xrefs"))
 
+(defun ambrevar/sly-insert-double-quotes ()
+  "Convenient to write list of string, e.g. when writing a shell command line."
+  (interactive)
+  (while (sly-inside-string-p)
+    (forward-char))
+  (cycle-spacing)
+  (insert "\"\"")
+  (backward-char)
+  (when (and (boundp 'evil-state)
+             (not (eq evil-state 'insert)))
+    (call-interactively #'evil-insert)))
+
 (with-eval-after-load 'sly-mrepl
   (set-face-attribute 'sly-mrepl-output-face nil :inherit 'default :foreground)
   (setq sly-mrepl-history-file-name (expand-file-name "sly-mrepl-history" user-emacs-directory))
   ;; While `,i RET` is short enough, it's one more key away in Evil insert state:
   (define-key sly-mrepl-mode-map (kbd "C-c M-p") 'sly-mrepl-set-package)
-  (define-key sly-mrepl-mode-map (kbd "C-c M-o") 'sly-mrepl-clear-repl))
+  (define-key sly-mrepl-mode-map (kbd "C-c M-o") 'sly-mrepl-clear-repl)
+  (define-key sly-mrepl-mode-map (kbd "S-SPC") 'ambrevar/sly-insert-double-quotes))
 
 (defun ambrevar/sly-load-reload-system ()
   (interactive)