Should fix a unicode bug in subversion (1.8.0) on Mac OSX. Caveat emptor!

utf8_fix.diff

--- subversion/libsvn_subr/path.c~ 2013-06-20 17:58:25.000000000 +0200
+++ subversion/libsvn_subr/path.c 2013-06-20 18:23:06.000000000 +0200
@@ -40,6 +40,9 @@

 #include "dirent_uri.h"

+#if defined(DARWIN)
+#include <CoreFoundation/CoreFoundation.h>
+#endif /* DARWIN */

 /* The canonical empty path.  Can this be changed?  Well, change the empty
    test below and the path library will work, not so sure about the fs/wc
@@ -1148,19 +1151,48 @@
                          const char *path_apr,
                          apr_pool_t *pool)
 {
-#if !defined(WIN32) && !defined(DARWIN)
+  svn_error_t *err;
+#if !defined(WIN32)
   svn_boolean_t path_is_utf8;
+#endif
+#if defined(DARWIN)
+  /*
+   Compose decomposed unicode characters out of precomposed ones.
+   This will solve the problem that the 'svn status' command sometimes
+   cannot recognize a file if it contains composed characters, like
+   Umlaut in some European languages
+  */
+  CFMutableStringRef cfmsr = CFStringCreateMutable(NULL, 0);
+  CFStringAppendCString(cfmsr, path_apr, kCFStringEncodingUTF8);
+  CFStringNormalize(cfmsr, kCFStringNormalizationFormC);
+  CFIndex path_buff_size = 1 + CFStringGetMaximumSizeForEncoding(
+    CFStringGetLength(cfmsr), kCFStringEncodingUTF8);
+  char *path = apr_palloc(pool, path_buff_size);
+  CFStringGetCString(cfmsr, path, path_buff_size, kCFStringEncodingUTF8);
+#endif
+#if !defined(WIN32)
   SVN_ERR(get_path_encoding(&path_is_utf8, pool));
   if (path_is_utf8)
 #endif
     {
+#if defined(DARWIN)
+      *path_utf8 = apr_pstrdup(pool, path);
+#else
       *path_utf8 = apr_pstrdup(pool, path_apr);
-      return SVN_NO_ERROR;
+#endif
+      err = SVN_NO_ERROR;
     }
-#if !defined(WIN32) && !defined(DARWIN)
-  else
-    return svn_utf_cstring_to_utf8(path_utf8, path_apr, pool);
+#if !defined(WIN32)
+  else {
+#if defined(DARWIN)
+    err = svn_utf_cstring_to_utf8(path_utf8, path_apr, pool);
+    CFRelease(cfmsr);
+#else
+    err = svn_utf_cstring_to_utf8(path_utf8, path_apr, pool);
+#endif
+  }
 #endif
+  return err;
 }

Please tell me if it works and I'll create a pull request for Homebrew.