Re: Console buffer width always 1 column less than setting

[Steven Penny <svnpenn at gmail dot com>]

On Sun, 5 Feb 2017 14:12:04, Vince Rice wrote:
> > On Sun, 05 Feb 2017 11:53:16, Steven Penny wrote:
> > This issue has bothered me for some time, but I never got around to reporting
> > it. The issue is that the Cygwin buffer via Cygwin.bat is always 1 less than
> > what is set.

> > For example, the default buffer is 80 columns, same as the window size.
> > Cygwin window size is correct, but that last column can never be accessed, it
> > always stays blank and the text wraps on column 79. Here is a test:

> > 1. Enter spaces until you reach next line, this way the prompt is not adding
> > to our count

> > 2. Enter:
> > 12345678901234567890123456789012345678901234567890123456789012345678901234567890

> > Now with cmd.exe, you get all 80 characters on the same line, but with Cygwin
> > it always wraps 1 character before. I don’t remember this always being the
> > case, I believe it used to work correct 1-2 years ago.

> I'm on Win7 64-bit with 64-bit Cygwin 2.6.0(0.304/5/3). To clarify, the above
> occurs with bash 4.3.46(7) in a Windows console, and I see the behavior there
> as well. This does not happen with the same bash in mintty 2.7, so it appears
> to be specific to the combination of bash and the Windows console.

http://cygwin.com/ml/cygwin/2017-02/msg00072.html

I found a fix to this problem. Create a file "cygwin-xenl.terminfo":

   cygwin-xenl|cygwin eat_newline_glitch,
     xenl,
     use=cygwin,

Compile and install the file:

   tic cygwin-xenl.terminfo

Add line to "~/.profile" or similar:

   TERM=cygwin-xenl

Interestingly, if you start via the shortcut (mintty), a different terminal is
used; one that already has xenl turned on:

   $ echo $TERM
   xterm

   $ infocmp xterm | grep xenl
   am, bce, km, mc5i, mir, msgr, npc, xenl,

Running Cygwin.bat with xterm is not a solution though, because xterm uses
different values for the key codes.

http://man7.org/linux/man-pages/man5/terminfo.5.html


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