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doc: Relegate xterm-8bit to a removed feature.

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This commit is contained in:
Jonathan de Boyne Pollard 2017-05-24 19:56:12 +01:00
parent ede4d620de
commit 6be921b71c
2 changed files with 8 additions and 14 deletions
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14
runtime/doc/term.txt
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@ -69,20 +69,6 @@ them as a cursor key. When you type you normally are not that fast, so they
are recognized as individual typed commands, even though Vim receives the same
sequence of bytes.
*xterm-8bit* *xterm-8-bit*
Xterm can be run in a mode where it uses 8-bit escape sequences. The CSI code
is used instead of <Esc>[. The advantage is that an <Esc> can quickly be
recognized in Insert mode, because it can't be confused with the start of a
special key.
For the builtin termcap entries, Vim checks if the 'term' option contains
"8bit" anywhere. It then uses 8-bit characters for the termcap entries, the
mouse and a few other things. You would normally set $TERM in your shell to
"xterm-8bit" and Vim picks this up and adjusts to the 8-bit setting
automatically.
When Vim receives a response to the "request version" sequence and it
starts with CSI, it assumes that the terminal is in 8-bit mode and will
convert all key sequences to their 8-bit variants.
==============================================================================
Window size *window-size*

8
runtime/doc/vim_diff.txt
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@ -281,6 +281,14 @@ Nvim does not have special `t_XX` options nor <t_XX> keycodes to configure
terminal capabilities. Instead Nvim treats the terminal as any other UI. For
example, 'guicursor' sets the terminal cursor style if possible.
*xterm-8bit* *xterm-8-bit*
Xterm can be run in a mode where it uses true 8-bit CSI. Supporting this
requires autodetection of whether the terminal is in UTF-8 mode or non-UTF-8
mode, as the 8-bit CSI character has to be written differently in each case.
Vim issues a "request version" sequence to the terminal at startup and looks
at how the terminal is sending CSI. Nvim does not issue such a sequence and
always uses 7-bit control sequences.
'ttyfast':
":set ttyfast" is ignored
":set nottyfast" is an error