[ruby/cgi] Add snake case aliases for escapeURIComponent

As agreed in [Feature #18822]

https://github.com/ruby/cgi/commit/9d1161ec9d

ext/cgi/escape/escape.c

@@ -458,7 +458,9 @@ InitVM_escape(void)
     rb_define_method(rb_mEscape, "escapeHTML", cgiesc_escape_html, 1);
     rb_define_method(rb_mEscape, "unescapeHTML", cgiesc_unescape_html, 1);
     rb_define_method(rb_mEscape, "escapeURIComponent", cgiesc_escape_uri_component, 1);
+    rb_define_alias(rb_mEscape, "escape_uri_component", "escapeURIComponent");
     rb_define_method(rb_mEscape, "unescapeURIComponent", cgiesc_unescape_uri_component, -1);
+    rb_define_alias(rb_mEscape, "unescape_uri_component", "unescapeURIComponent");
     rb_define_method(rb_mEscape, "escape", cgiesc_escape, 1);
     rb_define_method(rb_mEscape, "unescape", cgiesc_unescape, -1);
     rb_prepend_module(rb_mUtil, rb_mEscape);

lib/cgi/util.rb

@@ -46,6 +46,7 @@ module CGI::Util
     end
     buffer.force_encoding(encoding)
   end
+  alias escape_uri_component escapeURIComponent
 
   # URL-decode a string following RFC 3986 with encoding(optional).
   #   string = CGI.unescapeURIComponent("%27Stop%21%27+said%20Fred")
@@ -59,6 +60,8 @@ module CGI::Util
     str.valid_encoding? ? str : str.force_encoding(string.encoding)
   end
 
+  alias unescape_uri_component unescapeURIComponent
+
   # The set of special characters and their escaped values
   TABLE_FOR_ESCAPE_HTML__ = {
     "'" => ''',

test/cgi/test_cgi_util.rb

@@ -74,6 +74,10 @@ class CGIUtilTest < Test::Unit::TestCase
     assert_equal('%26%3C%3E%22%20%E3%82%86%E3%82%93%E3%82%86%E3%82%93'.ascii_only?, CGI.escapeURIComponent(@str1).ascii_only?) if defined?(::Encoding)
   end
 
+  def test_cgi_escape_uri_component
+    assert_equal('%26%3C%3E%22%20%E3%82%86%E3%82%93%E3%82%86%E3%82%93', CGI.escape_uri_component(@str1))
+  end
+
   def test_cgi_escapeURIComponent_with_unreserved_characters
     assert_equal("ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789-._~",
                  CGI.escapeURIComponent("ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789-._~"),
@@ -101,6 +105,11 @@ class CGIUtilTest < Test::Unit::TestCase
     assert_equal("\u{30E1 30E2 30EA 691C 7D22}", CGI.unescapeURIComponent("\u{30E1 30E2 30EA}%E6%A4%9C%E7%B4%A2"))
   end
 
+  def test_cgi_unescape_uri_component
+    str = CGI.unescape_uri_component('%26%3C%3E%22%20%E3%82%86%E3%82%93%E3%82%86%E3%82%93')
+    assert_equal(@str1, str)
+  end
+
   def test_cgi_unescapeURIComponent_preserve_encoding
     assert_equal(Encoding::US_ASCII, CGI.unescapeURIComponent("%C0%3C%3C".dup.force_encoding("US-ASCII")).encoding)
     assert_equal(Encoding::ASCII_8BIT, CGI.unescapeURIComponent("%C0%3C%3C".dup.force_encoding("ASCII-8BIT")).encoding)