feat(sh): add capf completion in shell scripts

For corfu (and non-lsp) users, primarily.

modules/lang/sh/config.el

@@ -72,6 +72,7 @@
   ;; autoclose backticks
   (sp-local-pair 'sh-mode "`" "`" :unless '(sp-point-before-word-p sp-point-before-same-p)))
 
+
 (use-package! company-shell
   :when (modulep! :completion company)
   :unless (modulep! +lsp)
@@ -83,6 +84,15 @@
         company-shell-dont-fetch-meta (featurep :system 'macos)))
 
 
+(use-package! bash-completion
+  :when (modulep! :completion corfu)
+  :unless (modulep! +lsp)
+  :init
+  (add-hook! 'sh-mode-hook
+    (add-hook 'completion-at-point-functions
+              #'bash-completion-capf-nonexclusive nil t)))
+
+
 (use-package! powershell
   :when (modulep! +powershell)
   :defer t