Dedent rust empty match

rc/filetype/rust.kak

@@ -98,7 +98,7 @@ define-command -hidden rust-trim-indent %{
 }
 
 define-command -hidden rust-indent-on-new-line %~
-    evaluate-commands -draft -itersel %<
+    evaluate-commands -draft -itersel %@
         try %{
             try %[ # line comment
                 evaluate-commands -draft -save-regs '/"' %[
@@ -159,6 +159,8 @@ define-command -hidden rust-indent-on-new-line %~
             try %< execute-keys -draft k <a-x> <a-k> \{$ <ret> j <a-gt> >
             # dedent after lines starting with . and ending with } or ) or , or ; or .await
             try %_ execute-keys -draft k <a-x> <a-k> ^\h*\. <ret> <a-k>([}),<semicolon>]|\.await)\h*$ <ret> j <a-lt> _
+            # dedent after lines ending with " => {}" - part of empty match
+            try %# execute-keys -draft k <a-x> <a-k> \ =>\ \{\}\h*$ <ret> j <a-lt> #
             # align to opening curly brace or paren when newline is inserted before a single closing
             try %< execute-keys -draft <a-h> <a-k> ^\h*[)}] <ret> h m <a-S> 1<a-&> >
             # todo dedent additional unmatched parenthesis
@@ -169,7 +171,7 @@ define-command -hidden rust-indent-on-new-line %~
         `
         # filter previous line
         try %{ execute-keys -draft k : rust-trim-indent <ret> }
-    >
+    @
 ~
 
 define-command -hidden rust-indent-on-opening-curly-brace %[

test/indent/rust/empty-match/cmd

@@ -0,0 +1 @@
+c<ret>bar<esc>

test/indent/rust/empty-match/in

@@ -0,0 +1,3 @@
+match a {
+    Some(a) => {}%( )
+

test/indent/rust/empty-match/out

@@ -0,0 +1,4 @@
+match a {
+    Some(a) => {}
+    bar
+

test/indent/rust/empty-match/rc

@@ -0,0 +1,3 @@
+source "%val{runtime}/colors/default.kak"
+source "%val{runtime}/rc/filetype/rust.kak"
+set buffer filetype rust