commit 15d6b65ead4bc2cce509fe16decce311f1f1bd71
author Ezio Melotti <ezio.melotti@gmail.com> Mon Aug 15 09:22:24 2011 +0300
committer Ezio Melotti <ezio.melotti@gmail.com> Mon Aug 15 09:22:24 2011 +0300
tree a82823880d5543f64d89d72c38c90339207df682
parent ca5e908c6ed5df85571f2cfe2a27533a780bfbe3

#12266: Fix str.capitalize() to correctly uppercase/lowercase titlecased and cased non-letter characters.

Objects/unicodeobject.c

diff --git a/Objects/unicodeobject.c b/Objects/unicodeobject.c
index af259a0..4d6864d 100644
--- a/Objects/unicodeobject.c
+++ b/Objects/unicodeobject.c
@@ -5485,13 +5485,13 @@
 
     if (len == 0)
         return 0;
-    if (Py_UNICODE_ISLOWER(*s)) {
+    if (!Py_UNICODE_ISUPPER(*s)) {
         *s = Py_UNICODE_TOUPPER(*s);
         status = 1;
     }
     s++;
     while (--len > 0) {
-        if (Py_UNICODE_ISUPPER(*s)) {
+        if (!Py_UNICODE_ISLOWER(*s)) {
             *s = Py_UNICODE_TOLOWER(*s);
             status = 1;
         }