fatfs v0.12 April 12, 2016:

- Added support of exFAT file system. (_FS_EXFAT)
- Added f_expand(). (_USE_EXPAND)
- Changed some members in FINFO structure and behavior of f_readdir().
- Added an option _USE_CHMOD and removed an option _WORD_ACCESS.
- Fixed errors in the case conversion teble of Unicode (cc*.c).

doc/en/error.html

@@ -39,9 +39,9 @@ int f_error (
 
 <div class="para desc">
 <h4>Description</h4>
-<p>In this revision, this function is implemented as a macro.</p>
+<p>In this revision, this function is implemented as a macro. It does not have any validation and mutual exclusion.</p>
 <pre>
-<span class="k">#define</span> f_error(fp) ((fp)->flag)
+<span class="k">#define</span> f_error(fp) ((fp)->err)
 </pre>
 </div>