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-rw-r--r--runtime/doc/vim_diff.txt8
1 files changed, 8 insertions, 0 deletions
diff --git a/runtime/doc/vim_diff.txt b/runtime/doc/vim_diff.txt
index 8851ef2d4b..dabf488465 100644
--- a/runtime/doc/vim_diff.txt
+++ b/runtime/doc/vim_diff.txt
@@ -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