Split listing in "Go Programming" section and edit the text

README.org

@@ -367,8 +367,7 @@ version.
 Mickey Peterson's post [[https://www.masteringemacs.org/article/how-to-get-started-tree-sitter?utm_source=newsletter&utm_medium=rss][How To Get Started with Tree-Sitter]] explains how to use
 =tree-sitter= in Emacs-29.1.  Listing [[lst:setup-treesit-sources][Setup =treesit= grammar sources]] configures
 for different =tree-sitter= grammar sources and maps =python-mode= to
-=python-ts-mode=.  Listing [[lst:setup-go][Setup Go programming]] shows how to configure
-~tab-width~ for ~go-ts-mod~ and ~go-mode-ts-mode~.
+=python-ts-mode=.
 
 #+caption[Setup =treesit= grammar sources]:
 #+caption: Setup =treesit= grammar sources.
@@ -4411,7 +4410,6 @@ changes the semantics of calling `beginning-of-defun'."
 :CUSTOM_ID: sec:go-programming
 :END:
 
-
 [[https://jorge.olano.dev/blog/getting-started-with-go-and-emacs/][Getting started with Go and Emacs]] looks interesting but this setup uses ~eglot~
 ~go-ts-mode~ (instead of ~go-mode~) and my hardware is too old to use [[https://brew.sh/][HomeBrew]].
 This setup uses the following links to install [[https://go.dev/][Go]] and [[https://pkg.go.dev/golang.org/x/tools/gopls][gopls]] on [[https://en.wikipedia.org/wiki/Darwin_(operating_system)][Darwin]]:
@@ -4422,34 +4420,19 @@ Links to learn [[https://go.dev/][Go]] are:
 1. [[https://www.golangprograms.com/go-language.html][Go programming language]] contains a tutorial and a reference.
 2. [[https://gobyexample.com/][Go by example]] is a showcase of short examples with explanations.
 3. [[https://interpreterbook.com/][Writing An Interpreter In Go]] is book showing how to write a real program.
-Listing [[lst:setup-go]] defines:
-- =gotsfmt= which is a cheap small replacement for =gofmt= in [[https://github.com/dominikh/go-mode.el][go-mode]]. Adding
-  =gofmt= to =before-save-hook= is safe, but adding =gotsfmt= to it is unsafe
-  because =gotsfmt= calls =save-buffer=.
-- =gots8tabs= which sets tab stops to the default 8 spaces locally in the
-  current buffer if the major mode is =go-ts-mode=.
-- =gots2tabs= which sets tab stops to 2 spaces locally in the current buffer if
-  the major mode is =go-ts-mode=.
 
-#+caption[Setup Go programming]:
-#+caption: Setup Go programming.
-#+name: lst:setup-go
-#+begin_src emacs-lisp -n :results silent
+Listing [[lst:setup-go-1]] defines =gotsfmt= which is a cheap small replacement for
+=gofmt= in [[https://github.com/dominikh/go-mode.el][go-mode]]. Adding =gofmt= to =before-save-hook= is safe, but adding
+=gotsfmt= is unsafe because =gotsfmt= calls =save-buffer=.  Listing
+[[lst:setup-go-2]] defines =gots8tabs=, =gots4tabs=, and =gots2tabs= which set tab
+stops to respectively 8, 4, and 2 spaces locally in the current buffer if the
+major mode is =go-ts-mode=.
+
+#+caption[Setup tab stops handling]:
+#+caption: Setup tab stops handling.
+#+name: lst:setup-go-1
+#+begin_src emacs-lisp
 (when (featurep 'treesit)
-  (defun gots2tabs ()
-    "Set tab stops to 2 spaces in current `go-ts` buffer."
-    (interactive)
-    (when (eq major-mode 'go-ts-mode)
-      (setq-local go-ts-mode-indent-offset 2)
-      (setq-local tab-width 2)))
-
-  (defun gots8tabs ()
-    "Set tab stops to 8 spaces in current `go-ts` buffer."
-    (interactive)
-    (when (eq major-mode 'go-ts-mode)
-      (setq-local go-ts-mode-indent-offset 8)
-      (setq-local tab-width 8)))
-
   (defun gotsfmt ()
     "Let `gofmt` format current `go-ts` buffer and file."
     (interactive)
@@ -4474,7 +4457,34 @@ Listing [[lst:setup-go]] defines:
               (message "Gofmt adores your code!"))
           (display-buffer output '(display-buffer-below-selected
                                    (inhibit-same-window . t)))
-          (message "Your code chokes Gofmt!")))))
+          (message "Your code chokes Gofmt!"))))))
+#+end_src
+
+#+caption[Setup tab stops handling]:
+#+caption: Setup tab stops handling.
+#+name: lst:setup-go-2
+#+begin_src emacs-lisp -n :results silent
+(when (featurep 'treesit)
+  (defun gots2tabs ()
+    "Set tab stops to 2 spaces in current `go-ts` buffer."
+    (interactive)
+    (when (eq major-mode 'go-ts-mode)
+      (setq-local go-ts-mode-indent-offset 2)
+      (setq-local tab-width 2)))
+
+  (defun gots4tabs ()
+    "Set tab stops to 4 spaces in current `go-ts` buffer."
+    (interactive)
+    (when (eq major-mode 'go-ts-mode)
+      (setq-local go-ts-mode-indent-offset 4)
+      (setq-local tab-width 4)))
+
+  (defun gots8tabs ()
+    "Set tab stops to 8 spaces in current `go-ts` buffer."
+    (interactive)
+    (when (eq major-mode 'go-ts-mode)
+      (setq-local go-ts-mode-indent-offset 8)
+      (setq-local tab-width 8)))
 
   (add-to-list 'auto-mode-alist `(,(rx ".go" eos) . go-ts-mode)))
 #+end_src