[wp-hackers] Upgrade instructions fatally flawed for Mac

Elliotte Harold elharo at metalab.unc.edu
Tue Jan 16 00:04:11 GMT 2007

There is a major bug in the upgrade instructions on 
http://codex.wordpress.org/Upgrading_WordPress that can cause Mac users 
to lose their data. This needs to be corrected. The problem is here:

Step 3: Overwrite Files

Get the latest and greatest WordPress (http://wordpress.org/download) 
and upload it to the WordPress directory, overwriting all the files that 
exist there. This will preserve your images and themes.

Actually it won't, at least not on a Mac. I think what happens on 
Windows is that when you copy a folder such as wp-content onto an 
existing folder, files inside the target folder are retained if the new 
folder does not contain different versions of those files. However, on a 
Mac the behavior is different. The entire target folder is completely 
wiped out and replaced by the new folder. No content from the target 
folder is retained under any circumstance.

I would recommend making an upgrade distribution that does not include 
the wp-content folder to avoid the possibility of overwriting user files 
within this folder. User and system files should be more cleanly 
separated. An upgrade should not touch the user's files.

Elliotte Rusty Harold  elharo at metalab.unc.edu
Java I/O 2nd Edition Just Published!

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