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adjust put-preferences docs to match implementation

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This commit is contained in:
Robby Findler 2011-08-27 16:36:58 -05:00
parent 72e5e1248f
commit 8fd388fde1
1 changed files with 3 additions and 2 deletions
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5
collects/scribblings/reference/filesystem.scrbl
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@ -978,7 +978,7 @@ paths are checked for compatibility with old versions of Racket:
@defproc[(put-preferences [names (listof symbol?)]
[vals list?]
[locked-proc (path? . -> . any) (lambda (p) (error ....))]
[locked-proc (or/c #f (path? . -> . any)) #f]
[filename (or/c #f path-string?) #f])
void?]{
@ -1004,7 +1004,8 @@ not already exist, it is created.
If the write lock is already held, then
@racket[locked-proc] is called with a single argument: the path of the lock
file. The default @racket[locked-proc] reports an error; an alternative
file. The default @racket[locked-proc] (used when the @racket[locked-proc]
argument is @racket[#f]) reports an error; an alternative
thunk might wait a while and try again, or give the user the choice to
delete the lock file (in case a previous update attempt encountered
disaster and locks are implemented by the presence of the lock file).