Sorry for forgetting 3 things. 1. I was testing on cygwin 1.7. 2. I was running the latest version of mintty (0.5.8-1). 3. I have included an output from cygcheck here.
Thanks. --- On Sun, 2/28/10, Dave Lee <mailto...@yahoo.com.hk> wrote: > Hi all, > > I was testing a program that uses non-canonical mode input > via > tcsetattr(). > > The intent of the program is: > (1) have read() to wait if nothing has been entered; > (2) read() should not return until 1 character is read > and put into the buffer. > > The essence is this: > > > struct termios newtty; > > . > > . > > . > > tcgetattr (0, > &newtty); > > newtty.c_lflags &= > (~ICANON); > > > > newtty.c_cc[VMIN] = 1; > > newtty.c_cc[VTIME] = > 0; > > > > tcsetattr (0, TCSANOW, > &newtty); > > > > unsigned char > buf[100]; > > size_t n = read (0, > buf, sizeof(buf)); > > . > > . > > . > > I had no problem while entering an ASCII character. I also > had success > if I entered a non-ASCII character under standard console, > but not under > mintty. > > Specifically, I entered the chinese character "例" (which > means "rule" > or "example"). It occupies 3 bytes in UTF-8 representation: > E4, BE, 8B. > > On standard console, the read() call returned THREE bytes > (n == 3), and > (not surprisingly) E4, BE and 8B were returned to buf[]. > > On mintty console, the read() call returned ONE byte (n == > 1), and only > E4 were returned to buf[]. I could grab the other two bytes > if I did > additional calls to read(). > > I have attached a sample program for testing purpose. > Basically it waits > for input, and when something is entered, prints it. > Instruction is > included in the source. > > I suspected this is a bug shown under mintty (but not > standard > console). Is it the case? > > Thanks, > > Dave Lee. > > > -- > Problem reports: http://cygwin.com/problems.html > FAQ: > http://cygwin.com/faq/ > Documentation: http://cygwin.com/docs.html > Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple
cygcheck.out
Description: Binary data
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