- Pascal Terjan filed bug #2154627

(http://curl.haxx.se/bug/view.cgi?id=2154627) which pointed out that libcurl
  uses strcasecmp() in multiple places where it causes failures when the
  Turkish locale is used. This is because 'i' and 'I' isn't the same letter so
  strcasecmp() on those letters are different in Turkish than in English (or
  just about all other languages). I thus introduced a totally new internal
  function in libcurl (called Curl_ascii_equal) for doing case insentive
  comparisons for english-(ascii?) style strings that thus will make "file"
  and "FILE" match even if the Turkish locale is selected.

RELEASE-NOTES

@@ -37,6 +37,7 @@ This release includes the following bugfixes:
  o CURLINFO_PRIMARY_IP fixed for persistent connection re-use cases
  o remove_handle/add_handle multi interface timer callback flaw
  o CURLINFO_REDIRECT_URL memory leak and wrong-doing
+ o case insensitive matching works in Turkish too
 
 This release includes the following known bugs:
 
@@ -53,6 +54,6 @@ advice from friends like these:
  Linus Nielsen Feltzing, Martin Drasar, Stefan Krause, Dmitry Kurochkin,
  Mike Revi, Andres Garcia, Michael Goffioul, Markus Moeller, Rob Crittenden,
  Jamie Lokier, Emanuele Bovisio, Maxim Ivanov, Ian Lynagh, Daniel Egger,
- Igor Novoseltsev, John Wilkinson
+ Igor Novoseltsev, John Wilkinson, Pascal Terjan
 
         Thanks! (and sorry if I forgot to mention someone)