On Sunday, December 29, 2013 11:08:53 AM UTC-8, Nils Bruin wrote: > > I don't see why 31307 and 31305 decide to do different things. > In fact, it may be the following: Singular at some point does this write:
read(0, "print(sage698);\n", 1024) = 16 write(1, "x2^2-x0^2", 9) = 9 write(1, "\n", 1) = 1 write(1, "> ", 2) = 2 The corresponding reads are: log.31305:read(26, "print(sage698);\r\nx2^2-x0^2\r\n> ", 1000) = 30 log.31307:read(26, "print(sage698);x2^2-x0^2\r\n> \r\n", 1000) = 30 As you can see, a new line ends up misplaced when 31307 is reading this. It looks like the tty echo doesn't finish before singular manages to write its output. I think you found a problem like this before. It would be nice if we could get a more systematic solution to this problem, e.g.: 1) turn off echoing altogether 2) get the tty to complete its echo before returning the line to the process to which the tty is stdin 3) include a newline with the string we feed to singular (and other interfaces): hopefully the line itself gets echoed in one write, so if we delimit it by a newline ourselves perhaps we can more easily recognize/separate the echo from actual return output. -- You received this message because you are subscribed to the Google Groups "sage-devel" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at http://groups.google.com/group/sage-devel. For more options, visit https://groups.google.com/groups/opt_out.
