From e8f22ce89d3553d04c97141f84172056362157cc Mon Sep 17 00:00:00 2001
From: Masafumi Koba <473530+ybiquitous@users.noreply.github.com>
Date: Wed, 5 Jul 2023 13:09:04 +0900
Subject: [PATCH] [DOC] Improve CSS for "toggle source" hovering over one more
 method signatures

This commit improves the behavior of showing the "toggle source" element on mouseover.

For example, when a method has one more signatures by using `:call-seq:`,

```ruby
# :call-seq:
#   foo {|element| ... } -> self
#   foo -> new_enumeration
def foo
end
```

The current CSS doesn't show "toggle source" even when hovering the second signature `foo -> new_enumeration`.
But this change will show "toggle source" always when hovering over any signature.

For details about the `.method-header` element, see `lib/rdoc/generator/template/darkfish/class.rhtml`:
https://github.com/ruby/rdoc/blob/0e060c69f51ec4a877e5cde69b31d47eaeb2a2b9/lib/rdoc/generator/template/darkfish/class.rhtml#L101-L124

For example, see https://docs.ruby-lang.org/en/3.2/Array.html#method-i-delete
---
 lib/rdoc/generator/template/darkfish/css/rdoc.css | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/rdoc/generator/template/darkfish/css/rdoc.css b/lib/rdoc/generator/template/darkfish/css/rdoc.css
index ddaf4d47c6..f845d6cecb 100644
--- a/lib/rdoc/generator/template/darkfish/css/rdoc.css
+++ b/lib/rdoc/generator/template/darkfish/css/rdoc.css
@@ -567,7 +567,7 @@ main .method-click-advice {
   line-height: 20px;
   background: url(../images/zoom.png) no-repeat right top;
 }
-main .method-heading:hover .method-click-advice {
+main .method-header:hover .method-click-advice {
   visibility: visible;
 }