I don't think that that's what's causing the overwrite/revert prompts. There is definitely a bug there and I would love to know what's going on, but DrRacket uses file-or-directory-modify-seconds to determine whether or not to prompt, and setting this metadata doesn't change the result of that function. Below is the test I used.
Robby #lang racket/gui (define fn "/Users/robby/x.rkt") (call-with-output-file fn (λ (port) (write (random) port)) #:exists 'truncate) (define-values (_ type) (file-creator-and-type fn)) (list (file-or-directory-modify-seconds fn) (current-seconds)) (sleep 2) (list (file-or-directory-modify-seconds fn) (current-seconds)) (file-creator-and-type fn #"DrSc" type) (list (file-or-directory-modify-seconds fn) (current-seconds)) On Thu, Jul 24, 2014 at 6:45 PM, Spencer Florence <[email protected]> wrote: > Two reasons: > > 1. DrRacket isn't always the default file association on my mac. > 2. Something keeps butchering the xattrs (My guess is dropbox) so DrRacket > keeps prompting me to overwrite the file on save and revert the file on run > (more or less every time I do either). This is recent, but I'm not sure what > changed. The only thing I remember updating recently is DrRacket, but who > knows what is updating in the background. > > Either way it seems like xattrs causing overwrite/revert prompts is bad > behavior, regardless if saving new xattrs is correct. It seems a bit like > saying "the file was modified because you added the setuid bit... do you > want to overwrite or revert?". The file wasn't modified, the file system > metadata was. > > > > On Thu, Jul 24, 2014 at 6:25 PM, Robby Findler <[email protected]> > wrote: >> >> It is setting itself as the owner of the file so that subsequent >> double-clicks on the file will open the file in DrRacket. >> >> This was the recommended behavior back in the day before you could >> associate extensions with applications (I think). >> >> Why do you want to disable it? >> >> Robby >> >> On Thu, Jul 24, 2014 at 3:43 PM, Spencer Florence >> <[email protected]> wrote: >> > Hi all, >> > >> > Whenever I save a file with DrRacket on OSX, it always sets some >> > extended >> > attributes on the file. Specifically it sets: >> > >> > [snips:pl7/examples] xattr -l somefile.rkt >> > com.apple.FinderInfo: >> > 00000000 54 45 58 54 44 72 53 63 00 00 00 00 00 00 00 00 >> > |TEXTDrSc........| >> > 00000010 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 >> > |................| >> > 00000020 >> > >> > In addition if I clear the xattr's (via xattr -c) DrRacket treats this >> > as an >> > external write to the file and prompts me to overwrite on save and >> > revert on >> > run. Is this behavior intended? It seems odd given that DrRacket doesn't >> > do >> > this with normal attributes (permission, suid bit, etc.) If it is >> > intended >> > what is the rational and can I disable it? >> > >> > --Spencer >> > >> > >> > >> > ____________________ >> > Racket Users list: >> > http://lists.racket-lang.org/users >> > >> ____________________ >> Racket Users list: >> http://lists.racket-lang.org/users > > > > ____________________ > Racket Users list: > http://lists.racket-lang.org/users > ____________________ Racket Users list: http://lists.racket-lang.org/users
