Nonetheless many thanks for your help and attention. Jos > -----Original Message----- > From: Robby Findler [mailto:ro...@eecs.northwestern.edu] > Sent: sábado, 21 de junio de 2014 9:54 > To: Jos Koot > Cc: Alexander D. Knauth; users > Subject: Re: [racket] newlines in strings not the same in > DrRacket and Racket > > Ah, sorry. > > Robby > > On Sat, Jun 21, 2014 at 2:04 AM, Jos Koot <jos.k...@gmail.com> wrote: > > > > 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 > >> >> > > >> > > >
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