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* doc/emacs/basic.texi (Basic Undo): Explain the C-/ situation in xterm

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AFAICT, in ttys you can send a `C-_` to Emacs either by pressing
`C-/` (e.g. xterm, uxterm, rxvt, xfce4-terminal, gnome-terminal)
or by pressing `C--` (e.g. rxvt, Linux console).
This commit is contained in:
Stefan Monnier 2020-09-30 19:08:47 -04:00
parent dc3a59f7a1
commit 8f6bde6371
1 changed files with 5 additions and 4 deletions
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doc/emacs/basic.texi
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@ -467,10 +467,11 @@ changes in the buffer; you can't use it to undo cursor motion.
On a terminal that supports the @key{Control} modifier on all other
keys, the easiest way to invoke @code{undo} is with @kbd{C-/}, since
that doesn't need the @key{Shift} modifier. On terminals which allow
only the ASCII control characters, @kbd{C-/} does not exist, but many
of them allow you to omit the @key{Shift} modifier when you type
@kbd{C-_} (in effect pressing @kbd{C--}), making that the most
convenient way to invoke @code{undo}.
only the ASCII control characters, @kbd{C-/} does not exist, but for
many of them @kbd{C-/} still works because it actually sends @kbd{C-_}
to Emacs, while many others allow you to omit the @key{Shift} modifier
when you type @kbd{C-_} (in effect pressing @kbd{C--}), making that
the most convenient way to invoke @code{undo}.
Although each editing command usually makes a separate entry in the
undo records, very simple commands may be grouped together.