diff options
| author | Paul Eggert <eggert@cs.ucla.edu> | 2022-04-28 10:51:01 -0700 |
|---|---|---|
| committer | Paul Eggert <eggert@cs.ucla.edu> | 2022-04-28 10:53:10 -0700 |
| commit | a41a181db5f3aca043ed42b228dc56a6403c21a5 (patch) | |
| tree | c960624c9d5c5f7b5237dcc8fc510fd4d961129f /doc/emacs/display.texi | |
| parent | 75366be2c0aa877eb6acf1b8a1c5312d6504caa9 (diff) | |
| download | emacs-a41a181db5f3aca043ed42b228dc56a6403c21a5.tar.gz | |
Document \807 etc. in raw byte display
* doc/emacs/display.texi (Display Custom): Mention potential
confusion in raw byte display.
Diffstat (limited to 'doc/emacs/display.texi')
| -rw-r--r-- | doc/emacs/display.texi | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/doc/emacs/display.texi b/doc/emacs/display.texi index 2ac0dca6223..7a6c7f391b9 100644 --- a/doc/emacs/display.texi +++ b/doc/emacs/display.texi @@ -2097,3 +2097,14 @@ argument to suppress the effect of bold-face in this case. byte with a decimal value of 128 is displayed as @code{\200}. To change display to the hexadecimal format of @code{\x80}, set the variable @code{display-raw-bytes-as-hex} to @code{t}. +Care may be needed when interpreting a raw byte when copying +text from a terminal containing an Emacs session, or when a terminal's +@code{escape-glyph} face looks like the default face. For example, by +default Emacs displays the four characters @samp{\}, @samp{2}, +@samp{0}, @samp{0} with the same characters it displays a byte with +decimal value 128. The problem can be worse with hex displays, where +the raw byte 128 followed by the character @samp{7} is displayed as +@code{\x807}, which Emacs Lisp reads as the single character U+0807 +SAMARITAN LETTER IT; this confusion does not occur with the +corresponding octal display @code{\2007} because octal escapes contain +at most three digits. |