From 3b18a7d8c9608ed0bf13d546018f44e703c62e11 Mon Sep 17 00:00:00 2001
From: Saya Andy <saya.andy@posteo.com>
Date: Mon, 7 Sep 2026 20:26:15 +0700
Subject: diff: add a flip link to the refs panel

The from and to refs of a diff can only be swapped by editing the
url by hand.  Add a flip link to the refs panel that opens the same
diff with the refs swapped, carrying the current head and options.
---
 ui-diff.c | 8 ++++++++
 1 file changed, 8 insertions(+)

(limited to 'ui-diff.c')

diff --git a/ui-diff.c b/ui-diff.c
index 5ee3830..13c1e32 100644
--- a/ui-diff.c
+++ b/ui-diff.c
@@ -409,6 +409,14 @@ void cgit_print_diff_ctrls(void)
 		html("<td class='ctrl'>");
 		cgit_print_ref_select("id", new_ref);
 		html("</td></tr>");
+
+		html("<tr><td/><td class='ctrl'>");
+		cgit_diff_link("flip", "swap from and to", "button",
+			       ctx.qry.head,
+			       is_null_oid(old_rev_oid) ? NULL :
+			               oid_to_hex(old_rev_oid),
+			       new_ref, ctx.qry.path);
+		html("</td></tr>");
 	}
 	html("</table>");
 	html("</div>");
-- 
cgit v1.3.1+16