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Fix inaccurate text in the user manual

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* doc/emacs/mule.texi (International Chars): Correct inaccurate
description of raw bytes display by "C-x =".
This commit is contained in:
Eli Zaretskii 2018-07-26 21:38:09 +03:00
parent 5cfb7a39ba
commit 00561b59c4
1 changed files with 13 additions and 6 deletions
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19
doc/emacs/mule.texi
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@ -156,12 +156,19 @@ system encodes the character safely and with a single byte
(@pxref{Coding Systems}). If the character's encoding is longer than (@pxref{Coding Systems}). If the character's encoding is longer than
one byte, Emacs shows @samp{file ...}. one byte, Emacs shows @samp{file ...}.
As a special case, if the character lies in the range 128 (0200 @cindex eight-bit character set
octal) through 159 (0237 octal), it stands for a raw byte that @cindex raw bytes
does not correspond to any specific displayable character. Such a On rare occasions, Emacs encounters @dfn{raw bytes}: single bytes
character lies within the @code{eight-bit-control} character set, whose values are in the range 128 (0200 octal) through 255 (0377
and is displayed as an escaped octal character code. In this case, octal), which Emacs cannot interpret as part of a known encoding of
@kbd{C-x =} shows @samp{part of display ...} instead of @samp{file}. some non-ASCII character. Such raw bytes are treated as if they
belonged to a special character set @code{eight-bit}; Emacs displays
them as escaped octal codes (this can be customized; @pxref{Display
Custom}). In this case, @kbd{C-x =} shows @samp{raw byte} instead of
@samp{file}. In addition, @kbd{C-x =} shows the character codes of
raw bytes as if they were in the range @code{#x3FFF80..#x3FFFFF},
which is where Emacs maps them to distinguish them from Unicode
characters in the range @code{#x0080..#x00FF}.
@cindex character set of character at point @cindex character set of character at point
@cindex font of character at point @cindex font of character at point