emacs-29 7cb92b5398 2/3: Fix c-ts-mode indentation

[Yuan Fu]

branch: emacs-29
commit 7cb92b5398771b088450942d9eaefd53b5f91cf6
Author: Yuan Fu <casouri@gmail.com>
Commit: Yuan Fu <casouri@gmail.com>

    Fix c-ts-mode indentation
    
    Turns out I shouldn't have removed the explicit rules.  Anyway, now it
    indents properly.
    
    * lisp/progmodes/c-ts-mode.el (c-ts-mode--indent-styles): Add rules.
    * test/lisp/progmodes/c-ts-mode-resources/indent.erts: Add tests
---
 lisp/progmodes/c-ts-mode.el                         |  6 ++++++
 test/lisp/progmodes/c-ts-mode-resources/indent.erts | 14 ++++++++++++++
 2 files changed, 20 insertions(+)

diff --git a/lisp/progmodes/c-ts-mode.el b/lisp/progmodes/c-ts-mode.el
index 1737b8c571..f2d5a48200 100644
--- a/lisp/progmodes/c-ts-mode.el
+++ b/lisp/progmodes/c-ts-mode.el
@@ -287,6 +287,12 @@ MODE is either `c' or `cpp'."
            ((node-is "compound_statement") point-min 
c-ts-common-statement-offset)
            ;; Bug#61291.
            ((match "expression_statement" nil "body") point-min 
c-ts-common-statement-offset)
+           ;; These rules are for cases where the body is bracketless.
+           ;; Tested by the "Bracketless Simple Statement" test.
+           ((parent-is "if_statement") point-min c-ts-common-statement-offset)
+           ((parent-is "for_statement") point-min c-ts-common-statement-offset)
+           ((parent-is "while_statement") point-min 
c-ts-common-statement-offset)
+           ((parent-is "do_statement") point-min c-ts-common-statement-offset)
 
            ,@(when (eq mode 'cpp)
                `(((node-is "field_initializer_list") parent-bol ,(* 
c-ts-mode-indent-offset 2)))))))
diff --git a/test/lisp/progmodes/c-ts-mode-resources/indent.erts 
b/test/lisp/progmodes/c-ts-mode-resources/indent.erts
index 2750526f89..8c588f56f9 100644
--- a/test/lisp/progmodes/c-ts-mode-resources/indent.erts
+++ b/test/lisp/progmodes/c-ts-mode-resources/indent.erts
@@ -155,6 +155,20 @@ for (int i = 0;
   ;
 =-=-=
 
+Name: Bracketless Simple Statement
+
+=-=
+for (int i = 0; i < 5; i++)
+  continue;
+
+while (true)
+  return 1;
+
+do
+  i++;
+while (true)
+=-=-=
+
 Name: Multiline Block Comments 1 (bug#60270)
 
 =-=