yes, windows 7, 64 bit on one, 32 bit on another computer. Of course the CRLF causes the problems, although Racket and DrRacket most of the time handle them correctly. Jos
> -----Original Message----- > From: users [mailto:users-boun...@racket-lang.org] On Behalf > Of Dr. Nikolaus Klepp > Sent: sábado, 21 de junio de 2014 11:20 > To: users@racket-lang.org > Subject: Re: [racket] newlines in strings not the same in > DrRacket and Racket > > You are using Windows? > > > Am Samstag, 21. Juni 2014 schrieb Jos Koot: > > > > I find the following: > > > > (write (string->list #<<end > > a > > a > > end > > )) > > > > In DrRacket (#\a #\newline #\a) > > In Racket: (#\a #return #\newline #\a #\return) > > > > Jos > > > > > > > -----Original Message----- > > > From: Robby Findler [mailto:ro...@eecs.northwestern.edu] > > > Sent: sábado, 21 de junio de 2014 8:29 > > > To: Jos Koot > > > Cc: Alexander D. Knauth; users > > > Subject: Re: [racket] newlines in strings not the same in > > > DrRacket and Racket > > > > > > I think that here strings are parsed in a way to make the > > > line-separator difference not matter too. Maybe that > works best for > > > you? > > > > > > http://docs.racket-lang.org/reference/reader.html#%28idx._%28g > > > entag._54._%28lib._scribblings%2Freference%2Freference..scrbl% > 29%29%29 > > > > > > Robby > > > > > > On Sat, Jun 21, 2014 at 1:25 AM, Jos Koot > <jos.k...@gmail.com> wrote: > > > > Thanks Robby, that's clear. > > > > I often copy results from the interactions window to the > > > definitions window > > > > of DrRacket. > > > > After reverting my preference file to defaults and > > > reselecting my personal > > > > preferences, the problem has disappeared. > > > > Nevertheless I'll avoid the problem for the future. Four > > > options I think: > > > > 1: stick to your string-append advice. > > > > 2: @ notation of scribble (which I have to try out yet, but > > > may well be > > > > preferable) > > > > 3: replace all newlines in strings by \n (not nice for it > > > makes the text > > > > less readable) > > > > 4: my trick to remove #\return from strings before > comparing them. > > > > Thanks, Jos > > > > > > > > > > > >> -----Original Message----- > > > >> From: Robby Findler [mailto:ro...@eecs.northwestern.edu] > > > >> Sent: sábado, 21 de junio de 2014 0:51 > > > >> To: Alexander D. Knauth > > > >> Cc: Jos Koot; users > > > >> Subject: Re: [racket] newlines in strings not the same in > > > >> DrRacket and Racket > > > >> > > > >> The issue is probably that the file is being saved with > > > CRLF. When the > > > >> file is opened in DrRacket, DrRacket always treats > > > newlines like that > > > >> as if there were the "\n" character. But when racket reads > > > the file it > > > >> just puts whatever bytes are in the saved file into the string. > > > >> > > > >> The best path forward: don't use actual newlines in > literals (like > > > >> strings). Instead write things like: > > > >> > > > >> (string-append "first line\n" "second-line\n") > > > >> > > > >> Or use scribble's @ notation. > > > >> > > > >> Robby > > > >> > > > >> > > > >> On Fri, Jun 20, 2014 at 5:20 PM, Alexander D. Knauth > > > >> <alexan...@knauth.org> wrote: > > > >> > Or are you using different editors? Different editors > > > >> might use different > > > >> > conventions for representing newlines. > > > >> > > > > >> > When the 32 bit one has the problem, what does it say? > > > >> > > > > >> > For example when I made the text file with DrRacket or > > > >> TextEdit but ran it > > > >> > with racket (not DrRacket), it worked, > > > >> > but when I made the text file with Microsoft Word, it > > > gave me this: > > > >> > $ racket newline-3.txt > > > >> > (format "~n") = "\n" > > > >> > " > > > >> > " = "\r" > > > >> > Ran 1 check. > > > >> > 0 checks passed. > > > >> > Actual value > > > >> > , the expected value. > > > >> > In newline-3.txt at line 7 column 0 > > > >> > > > > >> > On Jun 20, 2014, at 5:14 PM, Jos Koot > <jos.k...@gmail.com> wrote: > > > >> > > > > >> > Very strange. > > > >> > I did the same on my other computer and there it has the > > > >> same problem as > > > >> > before. > > > >> > I use windows 7 on both systems one with 64 bit OS and one > > > >> with 32 bit OS. > > > >> > The 64 bit version does well, the 32 bit windows 7 system > > > >> has the problem. > > > >> > May be my preferences? > > > >> > Thanks, Jos > > > >> > > > > >> > -----Original Message----- > > > >> > From: Jos Koot [mailto:jos.k...@gmail.com] > > > >> > Sent: viernes, 20 de junio de 2014 23:03 > > > >> > To: 'Alexander D. Knauth' > > > >> > Cc: 'users'; 'Jos Koot' > > > >> > Subject: RE: [racket] newlines in strings not the same in > > > >> > DrRacket and Racket > > > >> > > > > >> > Gives me > > > >> > > > > >> > (format "~n") = "\n" > > > >> > " > > > >> > " = "\n" > > > >> > The only test passed! > > > >> > > > > >> > both in DrRacket and Racket. > > > >> > Very surprising. Can you explain what happens here? > > > >> > I don't have a clue. > > > >> > Thanks, > > > >> > Jos > > > >> > > > > >> > > > > >> > ________________________________ > > > >> > > > > >> > From: Alexander D. Knauth [mailto:alexan...@knauth.org] > > > >> > Sent: viernes, 20 de junio de 2014 22:41 > > > >> > To: Jos Koot > > > >> > Cc: users > > > >> > Subject: Re: [racket] newlines in strings not the same > > > >> > in DrRacket and Racket > > > >> > > > > >> > > > > >> > This doesn't exactly solve your problem, but what > > > >> > happens (for both cases) when you do this?: > > > >> > #lang racket > > > >> > (require test-engine/racket-tests) > > > >> > (display "(format \"~n\") = ") (format "~n") > > > >> > (display "\"") (newline) > > > >> > (display "\" = ") " > > > >> > " > > > >> > (check-expect (format "~n") " > > > >> > ") > > > >> > (test) > > > >> > (void (read-line)) ; wait until the user has read > the results. > > > >> > > > > >> > On Jun 20, 2014, at 3:02 PM, Jos Koot > > > >> > <jos.k...@gmail.com> wrote: > > > >> > > > > >> > > > > >> > Running the following in DrRacket goes well. > > > >> > > > > >> > #lang racket > > > >> > (require test-engine/racket-tests) > > > >> > (check-expect (format "~n") " > > > >> > ") > > > >> > (test) > > > >> > (read-line) ; wait until the user has read the results. > > > >> > > > > >> > Displays: The only test passed! > > > >> > > > > >> > But running the same with Racket tells me the > > > >> > test fails. > > > >> > I have a solution for this by removing #\return > > > >> > from the strings to be > > > >> > compared. > > > >> > > > > >> > Question though: Can I solve this problem in a > > > >> > simpler way? > > > >> > May be I overlooked something in the docs? > > > >> > > > > >> > Best wishes, Jos > > > >> > > > > >> > > > > >> > ____________________ > > > >> > 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 > > > > > > > > -- > Please do not email me anything that you are not comfortable > also sharing with the NSA. > > ____________________ > Racket Users list: > http://lists.racket-lang.org/users ____________________ Racket Users list: http://lists.racket-lang.org/users
