Fix c-family closing brace indent behaviour on some corner cases

rc/filetype/c-family.kak

@@ -122,14 +122,17 @@ define-command -hidden c-family-indent-on-opening-curly-brace %[
 ]
 
 define-command -hidden c-family-indent-on-closing-curly-brace %[
-    # align to opening curly brace when alone on a line
+    evaluate-commands -draft -itersel -verbatim try %[
+        # check if alone on the line and select to opening curly brace
+        execute-keys <a-h><a-:><a-k>^\h+\}$<ret>hm
         try %[
-        # in case open curly brace follows a closing paren, align indent with opening paren
-        execute-keys -itersel -draft <a-h><a-:><a-k>^\h+\}$<ret>hm <a-F>)M <a-k> \A\(.*\)\h\{.*\}\z <ret> <a-S>1<a-&>
-    ] catch %[
-        # otherwise align with open curly brace
-        execute-keys -itersel -draft <a-h><a-:><a-k>^\h+\}$<ret>hm<a-S>1<a-&>
-    ] catch %[]
+            # in case open curly brace follows a closing paren, extend to opening paren
+            execute-keys -draft <a-f>) <a-k> \A\)\h+\{\z <ret>
+            execute-keys <a-F>)M
+        ]
+        # align to selection start
+        execute-keys <a-S>1<a-&>
+    ]
 ]
 
 define-command -hidden c-family-insert-on-closing-curly-brace %[

test/indent/c-family/close-block/in

@@ -0,0 +1,12 @@
+struct A
+{
+    int i%(;)
+
+if (true) {
+    if (true) {
+        foo%(;)
+    bar%(;)
+
+    foo(bar) {}
+{
+    baz%(;)

test/indent/c-family/close-block/out

@@ -0,0 +1,16 @@
+struct A
+{
+    int i;
+};
+
+if (true) {
+    if (true) {
+        foo;
+    }
+    bar;
+}
+
+    foo(bar) {}
+{
+    baz;
+}

test/indent/c-family/close-struct/in

@@ -1,3 +0,0 @@
-struct A
-{
-    int i%(;)

test/indent/c-family/close-struct/out

@@ -1,4 +0,0 @@
-struct A
-{
-    int i;
-};

test/indent/c-family/deindent-if-closing-brace/in

@@ -13,3 +13,7 @@ if (1) {
 
   if (1) {
          bar()%( )}
+
+        foo(bar) {}
+    {
+        baz%( )}

test/indent/c-family/deindent-if-closing-brace/out

@@ -19,3 +19,8 @@ if (1) {
   if (1) {
          bar()
   }
+
+        foo(bar) {}
+    {
+        baz
+    }