Use footnote links in Upside down text post & point out kernel.org joke.

diff --git a/posts/Upside-down_text.mdwn b/posts/Upside-down_text.mdwn
index e8a8361cd106f2c4cecc9978eadc58b726c6b207..5fda84a8cda3e418733b8b787f95a804847847bb 100644 (file)
--- a/posts/Upside-down_text.mdwn
+++ b/posts/Upside-down_text.mdwn
@@ -1,10 +1,7 @@
 [[!meta  title="ʇxǝʇ uʍop-ǝpısd∩"]]
 
-[Upside-down
-text](http://en.wikipedia.org/wiki/Transformation_of_text#Upside-down_text)
-(actually, rotated by π) appears to have been a hit last summer, but
-I've been seeing a bit on
-[#python](http://www.python.org/community/irc/) recently:
+[Upside-down text][] (actually, rotated by π) appears to have been a
+hit last summer, but I've been seeing a bit on [#python][] recently:
 
     15:21 < lieuwe> dash: so how should i call decode on a possibly unsafe string?
     ...
@@ -17,10 +14,8 @@ The Unicode people apparently didn't see a need to methodically rotate
 characters, so while many have official "turned" forms (e.g. ɐ
 (U+0250) LATIN SMALL LETTER TURNED A), many others do not.  The
 solution seems to be hunting around through the unicode tables looking
-for [homoglyphs](http://en.wikipedia.org/wiki/Homoglyphs) (which turns
-out to be an interesting [phishing
-scheme](http://en.wikipedia.org/wiki/IDN_homograph_attack) in its own
-right).
+for [homoglyphs][] (which turns out to be an interesting [phishing
+scheme][] in its own right).
 
 Anyhow, none of the implementations I found addressed conversion of
 ASCII characters with the scope and formality I felt this important
@@ -30,4 +25,14 @@ topic deserved, so I put together [[my own converter|180.py]] ;).
 Update: It seems that ikiwiki [doesn't like UTF-8
 filenames](http://ikiwiki.info/todo/should_use_a_standard_encoding_for_utf_chars_in_filenames/).
 
+Update: As an April Fools joke this year, [kernel.org][] [rotated its
+entire main page][rotated].
+
+[Upside-down text]: http://en.wikipedia.org/wiki/Transformation_of_text#Upside-down_text
+[#python]: http://www.python.org/community/irc/
+[homoglyphs]: http://en.wikipedia.org/wiki/Homoglyphs
+[phishing scheme]: http://en.wikipedia.org/wiki/IDN_homograph_attack
+[kernel.org]: http://www.kernel.org/
+[rotated]: http://userweb.kernel.org/~warthog9/april1/2010/
+
 [[!tag tags/fun]]