402-go: introduce go-mode

* handle formation go code
* use go-autocomplete
* use go-imports

Signed-off-by: Ralf Zerres <ralf.zerres@networkx.de>

site-start.d/402-go.el

@@ -0,0 +1,21 @@
+;;; 402-go.el --- handle go code
+
+;;; Commentary:
+;;  Major mode for the Go programming language
+
+;;; Code:
+(use-package go-mode
+  :ensure t
+  :custom
+  (setq gofmt-command "goimports")                ; gofmt uses invokes goimports
+  (if (not (string-match "go" compile-command))   ; set compile command default
+      (set (make-local-variable 'compile-command)
+	   "go build -v && go test -v && go vet"))
+  (auto-complete-mode 1))
+  :config
+  (use-package go-autocomplete)
+  (use-package go-imports)
+  (add-hook 'before-save-hook 'gofmt-before-save) ; gofmt before every save
+
+(provide '402-go)
+;;; 402-go.el ends here