stdlib: avoid extra calls to eliminate "\n" from Base64

We may use the '0' (zero) to avoid adding the line feed.
Furthermore, the '*' (asterisk) modifier is not needed for
a single-element arrays.

* ext/psych/lib/psych/visitors/yaml_tree.rb (visit_String):
  eliminate chomp
* lib/net/http.rb (connect): eliminate delete
* lib/net/http/header.rb (basic_encode): ditto
* lib/net/imap.rb (authenticate): eliminate gsub
  (self.encode_utf7): shorten delete arg
* lib/net/smtp.rb (base64_encode): eliminate gsub
* lib/open-uri.rb (OpenURI.open_http): eliminate delete
* lib/rss/rss.rb: ditto
* lib/securerandom.rb (base64): ditto
  (urlsafe_base64): eliminate delete!
* lib/webrick/httpauth/digestauth.rb (split_param_value):
  eliminate chop
* lib/webrick/httpproxy.rb (do_CONNECT): eliminate delete
  (setup_upstream_proxy_authentication): ditto
  [ruby-core:72666] [Feature #11938]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@53488 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

2 files changed, 3 insertions, 3 deletions

diff --git a/lib/webrick/httpauth/digestauth.rb b/lib/webrick/httpauth/digestauth.rb
index 018989e6dd..98bdbd10c7 100644
--- a/lib/webrick/httpauth/digestauth.rb
+++ b/lib/webrick/httpauth/digestauth.rb
@@ -312,7 +312,7 @@ module WEBrick
       def generate_next_nonce(req)
         now = "%012d" % req.request_time.to_i
         pk  = hexdigest(now, @instance_key)[0,32]
-        nonce = [now + ":" + pk].pack("m*").chop # it has 60 length of chars.
+        nonce = [now + ":" + pk].pack("m0") # it has 60 length of chars.
         nonce
       end
 
diff --git a/lib/webrick/httpproxy.rb b/lib/webrick/httpproxy.rb
index 79a2e8f55b..083720f298 100644
--- a/lib/webrick/httpproxy.rb
+++ b/lib/webrick/httpproxy.rb
@@ -143,7 +143,7 @@ module WEBrick
       if proxy = proxy_uri(req, res)
         proxy_request_line = "CONNECT #{host}:#{port} HTTP/1.0"
         if proxy.userinfo
-          credentials = "Basic " + [proxy.userinfo].pack("m").delete("\n")
+          credentials = "Basic " + [proxy.userinfo].pack("m0")
         end
         host, port = proxy.host, proxy.port
       end
@@ -294,7 +294,7 @@ module WEBrick
       if upstream = proxy_uri(req, res)
         if upstream.userinfo
           header['proxy-authorization'] =
-            "Basic " + [upstream.userinfo].pack("m").delete("\n")
+            "Basic " + [upstream.userinfo].pack("m0")
         end
         return upstream
       end