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Corinna Vinschen 095cac4b8d Cygwin: Add IUTF8 termios iflag 
The termios code doesn't handle erasing of multibyte characters
in canonical mode, it always erases a single byte.  When entering
a multibyte character and then pressing VERASE, the input ends up
with an invalid character.

Following Linux we introduce the IUTF8 input flag now, set by
default.  When this flag is set, VERASE or VWERASE will check
if the just erased input byte is a UTF-8 continuation byte.  If
so, it erases another byte and checks again until the entire
UTF-8 character has been removed from the input buffer.

Note that this (just as on Linux) does NOT work with arbitrary
multibyte codesets.  This only works with UTF-8.

For a discussion what happens, see
https://cygwin.com/ml/cygwin/2017-01/msg00299.html

Sidenote: The eat_readahead function is now member of fhandler_termios,
not fhandler_base.  That's necessary to get access to the terminal's
termios flags.

Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
 		2017-01-31 15:36:24 +01:00
..
acl Implement POSIX.1e ACL functions 2016-03-08 13:56:40 +01:00
arpa Switching the Cygwin DLL to LGPLv3+, dropping commercial buyout option 2016-06-23 10:09:17 +02:00
asm Switching the Cygwin DLL to LGPLv3+, dropping commercial buyout option 2016-06-23 10:09:17 +02:00
attr Switching the Cygwin DLL to LGPLv3+, dropping commercial buyout option 2016-06-23 10:09:17 +02:00
bits Switching the Cygwin DLL to LGPLv3+, dropping commercial buyout option 2016-06-23 10:09:17 +02:00
cygwin Export getentropy and getrandom calls 2016-12-16 23:10:19 +01:00
machine Move pthread types to <sys/_pthreadtypes.h> 2016-11-17 11:33:15 +01:00
net Switching the Cygwin DLL to LGPLv3+, dropping commercial buyout option 2016-06-23 10:09:17 +02:00
netinet Switching the Cygwin DLL to LGPLv3+, dropping commercial buyout option 2016-06-23 10:09:17 +02:00
sys Cygwin: Add IUTF8 termios iflag 2017-01-31 15:36:24 +01:00
a.out.h Switching the Cygwin DLL to LGPLv3+, dropping commercial buyout option 2016-06-23 10:09:17 +02:00
byteswap.h Switching the Cygwin DLL to LGPLv3+, dropping commercial buyout option 2016-06-23 10:09:17 +02:00
dlfcn.h Switching the Cygwin DLL to LGPLv3+, dropping commercial buyout option 2016-06-23 10:09:17 +02:00
elf.h * include/elf.h: Update from FreeBSD. 2012-06-06 04:45:48 +00:00
endian.h Switching the Cygwin DLL to LGPLv3+, dropping commercial buyout option 2016-06-23 10:09:17 +02:00
err.h Switching the Cygwin DLL to LGPLv3+, dropping commercial buyout option 2016-06-23 10:09:17 +02:00
error.h Switching the Cygwin DLL to LGPLv3+, dropping commercial buyout option 2016-06-23 10:09:17 +02:00
fcntl.h Switching the Cygwin DLL to LGPLv3+, dropping commercial buyout option 2016-06-23 10:09:17 +02:00
features.h Switching the Cygwin DLL to LGPLv3+, dropping commercial buyout option 2016-06-23 10:09:17 +02:00
fenv.h Switching the Cygwin DLL to LGPLv3+, dropping commercial buyout option 2016-06-23 10:09:17 +02:00
fnmatch.h Feature test macros overhaul: fnmatch.h 2016-03-17 21:08:54 -05:00
fts.h * Merge in cygwin-64bit-branch. 2013-04-23 09:44:36 +00:00
ftw.h * Merge in cygwin-64bit-branch. 2013-04-23 09:44:36 +00:00
getopt.h
…
glob.h Feature test macros overhaul: Cygwin headers 2016-03-17 21:09:22 -05:00
icmp.h
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ifaddrs.h getifaddrs: Return pointer to extended interface info in ifa_data member 2016-03-10 18:00:00 +01:00
io.h Switching the Cygwin DLL to LGPLv3+, dropping commercial buyout option 2016-06-23 10:09:17 +02:00
lastlog.h Switching the Cygwin DLL to LGPLv3+, dropping commercial buyout option 2016-06-23 10:09:17 +02:00
limits.h Fix 32-bit SSIZE_MAX 2016-07-14 12:38:49 -06:00
mapi.h Switching the Cygwin DLL to LGPLv3+, dropping commercial buyout option 2016-06-23 10:09:17 +02:00
mntent.h Switching the Cygwin DLL to LGPLv3+, dropping commercial buyout option 2016-06-23 10:09:17 +02:00
monetary.h Add sys/_locale.h header and fix up headers 2016-08-15 10:56:58 +02:00
mqueue.h Switching the Cygwin DLL to LGPLv3+, dropping commercial buyout option 2016-06-23 10:09:17 +02:00
netdb.h Fix comments for AI_ADDRCONFIG and AI_V4MAPPED 2016-06-24 23:35:13 +02:00
paths.h Switching the Cygwin DLL to LGPLv3+, dropping commercial buyout option 2016-06-23 10:09:17 +02:00
poll.h Switching the Cygwin DLL to LGPLv3+, dropping commercial buyout option 2016-06-23 10:09:17 +02:00
process.h * include/process.h: Move here from include/cygwin subdir. 2012-02-07 17:15:07 +00:00
pthread.h Add pthread_getname_np and pthread_setname_np 2016-08-23 15:07:42 +01:00
pty.h
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regex.h
…
resolv.h Remove spurious execute permissions from some Cygwin source and text files 2015-10-27 16:10:37 +00:00
search.h
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semaphore.h Switching the Cygwin DLL to LGPLv3+, dropping commercial buyout option 2016-06-23 10:09:17 +02:00
sysexits.h
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syslog.h Switching the Cygwin DLL to LGPLv3+, dropping commercial buyout option 2016-06-23 10:09:17 +02:00
termio.h Switching the Cygwin DLL to LGPLv3+, dropping commercial buyout option 2016-06-23 10:09:17 +02:00
tzfile.h Switching the Cygwin DLL to LGPLv3+, dropping commercial buyout option 2016-06-23 10:09:17 +02:00
ucontext.h Switching the Cygwin DLL to LGPLv3+, dropping commercial buyout option 2016-06-23 10:09:17 +02:00
utmpx.h Switching the Cygwin DLL to LGPLv3+, dropping commercial buyout option 2016-06-23 10:09:17 +02:00
wait.h Switching the Cygwin DLL to LGPLv3+, dropping commercial buyout option 2016-06-23 10:09:17 +02:00